Answer:
0.50% are colour blind and 0.25% are carrier.Explanation:
Colour blindness is a common hereditary condition which is usually passed down from parents to offspring This is a X linked disorder
Given:
male - Xc Y ( color blind)
Female- Xc X ( carrier)
gametes, Xc, Y * Xc , X
F1 generation:
Xc Xc, Xc X, Xc Y, XY
So Xc Xc female and Xc Y male are colour blind because this disease is X- linked recessive disease,
and Xc X female is carrier,
XY male is normal.
The belief that children's immune systems need to be exposed to viruses and bacteria in order to strengthen them, but that children are overprotected from this exposure, is called the __________.
Answer:
hygiene hypothesis
Explanation:
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Gland that secretes through ducts to the surface of an organ or tissue or into a vessel is called
Answer: Exocrine glands.
Explanation:
The gland can be defined as the group of cells in an animal's body which synthesizes hormones and releases its secretion directly into the bloodstream or inside the cavities or directly on the outer surface of the body.
The gland that secrete the secretions directly on the skin or outer surface is known as exocrine gland.
The secretions can be from sweat from sweat glands, goblet cells, salivary gland and tear gland are some of the example of exocrine gland.
An exocrine gland is a type of gland that secretes substances through ducts either to the surface of an organ or tissue, or into a vessel. These glands include sweat glands, salivary glands, and the pancreas.
Explanation:A gland that secretes through ducts to the surface of an organ or tissue, or into a vessel, is referred to as an exocrine gland. These glands produce substances such as sweat, saliva, and digestive enzymes. There is a wide array of exocrine glands in the human body, including sweat glands, salivary glands, and the pancreas. Each of these glands carries out its function by secretions which pass through ducts to their targets. These are different from endocrine glands, which release hormones directly into the bloodstream.
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The zone of leaching is the area in which ________. weathered bedrock forms a soil horizon organic matter gathers to create a soil horizon minerals are dissolved and removed from soil minerals are precipitated and added to soil
Answer:
minerals are dissolved and removed from soil
Explanation:
The zone of leaching is the segment of the soil profile, where nutrients or minerals are dissolved to form soluble minerals, which are later carried by percolating water that penetrates the soil, and moved downwards as the water travels through the soil profile. This zone where minerals are dissolved and removed from the soil, is what we refer to as the zone of leaching.
What is meant by double fertilization? Select all that apply. A diploid zygote is formed. Two diploid zygotes form. Endosperm will form. Plants aren't real.
Answer:
A diploid zygote is formed; Endosperm will form.
Explanation:
The fertilization in angiosperms (flowering plants) is known as double fertilization. In this process, two male gametes or sperms are involved where one sperm fertilizes the ovum or egg cell and forms a diploid zygote that develops into an embryo while the other sperm fertilizes two polar nuclei and forms a triploid cell that develops into the endosperm.
The female reproductive structure of a flower includes stigma, style, and ovary. During pollination, the pollen grain attaches to the stigma where it begins to germinate and forms a pollen tube that grows into the style and reaches the ovary. It enters the ovary and penetrates an opening in the ovule called the micropyle. The generative cell in the pollen grain travels through the pollen tube and divides to form two sperms that enter into the ovule.
Usually, six cells (three antipodal cells, two synergid cells, and one egg cell) and two polar central nuclei are present in an unfertilized ovule. Here, a process known as syngamy occurs, where one haploid sperm fertilizes the haploid egg cell or ovum and forms a diploid zygote. It later grows into an embryo. The other haploid sperm fuses with the two haploid polar nuclei to form a triploid nucleus that develops into the endosperm (nutrient-rich tissue) which provides nourishment to the growing embryo. Later, the fertilized ovule forms the seed and the ovary develops into the fruit which envelops and protects the seed.
please help me with this
Answer:SO2 is an organic compound.K is an Element.CL is and inorganic elemental molecule. C6H6 is an inorganic compound.
Explanation:
Many tropical zooplankton have elaborate spines. These have been interpreted as either a defense against predation or a means to increase drag and prevent sinking. How would you determine which was the likely reason for these structures
Answer:
Means to increase drag and prevent sinking is the correct answer.
Explanation:
Plankton avoid sinking by increasing their surface area and decreasing their density. Spines slow down sinking by adding surface area without increasing density. Defense against predation would be to sing below. Not the opposite.
Who is at the greatest risk of a heart attack? a. Forrest, who has high levels of LDLs and low levels of HDLs b. Sawyer, who has low levels of both LDLs and HDLs c. Gump, who has high levels of both LDLs and HDLs d. Tucker, who has low level of LDLs and high levels of HDLs
Answer:
(C) Gump, who has high levels of both LDLs and HDLs
Explanation:
A high level of LDL is a threat to good health. It's an indicator to a bad level of cholesterol
A low level of HDL which indicates a low level of cholesterol is a good sign to health.
But when a person has a combination of High LDL and High HDL that's a sure chance of HEART ATTACK.
In other words,
Heart attack is highest if a person has level of LDL and High level of HDL
Forrest, with high levels of LDLs and low levels of HDLs, is at the highest risk for a heart attack due to the increased LDL:HDL ratio leading to greater plaque buildup and heart disease risk.
Explanation:When considering who is at the greatest risk of a heart attack among the given individuals, it's important to understand the roles of low-density lipoproteins (LDLs) and high-density lipoproteins (HDLs) in cardiovascular health. LDLs are often referred to as "bad" cholesterol because they can lead to the buildup of plaque in the arteries, increasing the risk for heart attacks. Conversely, HDLs are known as "good" cholesterol as they help to transport cholesterol from the tissues back to the liver for recycling, thus helping to prevent plaque formation.
Based on this information:
Forrest, who has high levels of LDLs and low levels of HDLs, is at the greatest risk of a heart attack because this profile contributes to a higher LDL:HDL ratio, which is associated with an increased risk for heart disease due to greater plaque buildup.Sawyer, who has low levels of both LDLs and HDLs, might have a more neutral risk profile.Gump, with high levels of both LDLs and HDLs, also has an increased risk but not as much as Forrest's, assuming his HDL levels help mitigate some of the effects of high LDLs.Tucker, who has low levels of LDLs and high levels of HDLs, has the most favorable lipid profile and the lowest risk for a heart attack of the individuals mentioned.Therefore, a. Forrest is at the greatest risk of a heart attack.
The amino acid sequence of cytochrome c is exactly the same in humans and chimpanzees. There is a difference of 13 amino acids between the cytochrome c of humans and dogs, and a difference of 20 amino acids between the cytochrome c of humans and rattle snakes. Which of the following is best supported by these data?
a. Rattlesnakes apparently gave rise evolutionarily to the dog, chimpanzee, and human.
b. Cytochrome c apparently has an entirely different function in rattlesnakes than in mammals, which explains the difference in the number of amino acids.
c. Cytochrome c is not found universally in animals.
d. Cytochrome c from a rattlesnake could function in a dog, but not in a chimpanzee.
e. The human is apparently more closely related to the chimpanzee than to the dog or rattlesnake.
Answer:
Option-(E): The human is apparently more closely related to the chimpanzee than to the dog or rattlesnake.
Explanation:
Humans are primates and that s why we can argue that we are more closely related to the chimpanzees, as there are more similarities inside the genome and the sequences of the amino acids of the two species. And, thus they result in arrangement of both the species inside the same taxonomic level.While, the rattle snake and dog are far more different when it comes to the over all sequences of amino acid inside the living beings cellular structure.A heme protein present within the outer and inner membrane of mitochondria is called Cytochrome c.
The main role is to transport electrons between the III complex and IV complex during ETC.
The correct answer is:
Option E. The human is apparently more closely related to the chimpanzee than to the dog or rattlesnake.
The explanation for this is:
Humans and Chimpanzees both are primates and are nearly related.The genome and amino acid arrays of both animals are more comparable as correlated to any other mammal.They come below the same taxonomical arrangement.Rattlesnake being a reptile and dog being a mammal is different in amino acid sequences and are different in characters too.Therefore, humans are closely related to chimpanzees than dogs or rattlesnakes.
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How do plants that are adapted to dry and salty soils normally tolerate the low water potential in the environment?
Answer:
By lowering the solute potential inside their cells
Explanation:
Here is the complete question:.
How do plants that are adapted to dry and salty soils tolerate the low water potential in the environment?
By increasing transpiration
By lowering the solute potential inside their cells
By wilting during daytime
By keeping their stomata closed all the time
And the answer is
By lowering the solute potential inside their cells
An acute non-contagious respiratory tract infection that produces severe pneumonia-like symptoms caused by bacteria that thrive in warm aquatic environments and are inhaled through contaminated aerosolized water droplets is known as:_______.
Answer: Legionnaires' disease
Explanation:
Legionnaires' disease is a kind of pneumonia that is caused by the bacteria.The bacterial infection spreads by breathing the aerosol or mist from the water. The bacteria does not spread from person to person thus the disease is non-contagious.
The bacteria of the disease lives in the aquatic environment and may contaminate the water body. The symptoms of the disease includes the chills, coughs, high fever, headaches and muscle aches. X-ray and lab test can be done to diagnose the disease.
Answer: Legionella infection.
Explanation:
Legionnaires disease doesn't spread from one person to another person. They spread by the help of mist such as air conditioning units in large buildings.
The adults who are greater than the age of 50 and have addiction of tobacco is more prone to this disease because they have weaker immunity.
The common symptoms of this disease is also same like common flu, fever, chills , diarrhea, headache et cetera.
Which of the following is not a factor that has contributed to agricultural success in the US? A. expansive infrastructure and mechanized equipment B. access to expensive chemical fertilizers and pesticides C. controlled population growth D. the prohibition of hybridized crops Please select the best answer from the choices provided. A B C D
The prohibition of hybridized crops is not a factor that has contributed to agricultural success in the US. The correct answer is D.
Explanation:The correct answer is D. The prohibition of hybridized crops. This has not contributed to agricultural success in the US. Hybridized crops have actually been instrumental in increasing yields and improving crop quality. They are engineered to have desirable traits, such as resistance to diseases and pests, which helps increase productivity and reduce the need for chemical fertilizers and pesticides.
On the other hand, the other options listed - expansive infrastructure and mechanized equipment, access to expensive chemical fertilizers and pesticides, and controlled population growth - have all played crucial roles in agricultural success in the US.
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The correct answer is D. the prohibition of hybridized crops, which has not contributed to agricultural success in the US. Hybridized crops have, in fact, enhanced productivity. Options A, B, and C have all been significant contributors to agricultural success.
The factor that has not contributed to agricultural success in the US is D. the prohibition of hybridized crops. On the contrary, the development and use of hybridized and genetically modified crops have been instrumental in increasing agricultural productivity in the country. This is in contrast to the factors listed in options A, B, and C, which have all played significant roles in the success of US agriculture:
Expansive infrastructure and mechanized equipment (A) have allowed for the efficient planting, cultivation, and harvesting of crops on a large scale.Access to expensive chemical fertilizers and pesticides (B) has enabled farmers to boost yield by supplying essential nutrients and protecting crops from pests and diseases.Controlled population growth (C) has allowed agriculture to meet the dietary needs of the population without overextending the capacity of available farmland and resources.Historically, the Green Revolution introduced numerous agricultural techniques that included the use of inorganic fertilizers, pesticides, and irrigation, alongside the introduction of new grain varieties, which significantly increased output and staved off the Malthusian predictions of overpopulation outstripping food production.
A patient's mammogram is reviewed and the radiologist reports a normal exam. Six months later, the patient finds a lump in her breast. The patient has a lumpectomy and makes a full recovery. It was determined that the mass was present and visible in the original mammogram. The patient sued claiming mental anguish. What type of damages might she be awarded
Answer:
General compensatory
Explanation:
Damages are a remedy in the form of a monetary award to be paid to a claimant as compensation for loss or injury. To warrant the award, the claimant must show that a breach of duty has caused foreseeable loss. To be recognised at law, the loss must involve damage to property, or mental or physical injury; pure economic loss is rarely recognised for the award of damages.
Compensatory damages are grouped into special damages: which are economic losses such as loss of earnings, property damage and medical expenses, and general damages: which are non-economic damages such as pain and suffering and emotional distress. Our ordeal here falls under the General Damage
General damages compensate the claimant for the non-monetary aspects of the specific harm suffered. This is usually termed 'pain, suffering and loss of amenity'.
Which part of the transition zone receives the most rainfall
Answer: South
Explanation:
Observe and measure prepared sea urchin embryos and chick embryos.Conduct an experiment using chick embryos. Determine the effect of a stimulant and depressant on a chick embryo's heart rate.
Answer:
Increase with a stimulant and decrease with a depressant
Explanation:
Stimulants and depressants are observed using various organisms. The way a stimulant works is by increasing the dopamine levels in the body. This in turn causes increased heart rate as would be seen in the chick embryo heart. On the other hand a depressant would lower dopamine levels. This would reduce the neurotransmitter and cause the heart rate to slow down.
Two species of tree frogs occupy different elevations in the canopy of a rain forest. If these frogs with strikingly different patterns of coloration but similar patterns of activity are brought together, they can produce offspring that survive to adulthood and can then mate successfully with individuals of either species. What keeps these frogs recognizably distinct?
1. Lack of hybrid fertility
2. Temporal isolation
3. Mechanical isolation
4. Habitat Isolation
5. Lack of hybrid viability
Answer:
Habitat Isolation
Explanation:
Ecological, or habitat, isolation occurs when two species that could interbreed do not because the species live in different areas.
If a sexually reproducing organism has 28 chromosomes in its body cells, how many chromosomes did it inherit from each parent?
If a parent cell has 28 chromosomes and undergoes meiosis, the resulting cells will have 14 chromosomes.
what's a chromosome and its role?A chromosome is a long DNA molecule with part or all of the genetic material of an organism. maximum eukaryotic chromosomes include packaging proteins called histones which, aided via chaperone proteins, bind to and condense the DNA molecule to maintain its integrity.
Chromosomes are the highest level of organization of DNA and proteins. the main feature of chromosomes is to carry the DNA and transfer the genetic information from mother and father to offspring. Chromosomes play a vital role throughout cellular division. They defend the DNA from getting tangled and damaged.
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Ovalbumin is a protein found in eggs. Describes the molecular structure of ovalbumin
Answer:
The protein present in the white portion of an egg is termed as ovalbumin and it holds more than 55 percent of the overall constituent of the protein present in an egg. However, the exact function of ovalbumin within the egg is not known yet, though it is considered as a storage protein.
As it is known that all the proteins are the polymers of the amino acids. Thus, ovalbumin also as a protein must comprise the amino acid chains, which are associated together via a peptide bond. The amino acid chains get a twist and folded in an appropriate function and provide a specific three-dimensional shape to the protein.
Answer:
Ovalbumin is the main protein found in the egg white, which constitutes approximately 55 per cent of the total proteins inside an egg.
The main function of this protein is non known but it serves as a storage protein in the cell.
The ovalbumin of the chicken is made of 385 amino acids whose molecular mass is 42. 7 kDa.
It has N-terminal acetylation, Glycosylation and G1 phosphorylation . Ovalbumin forms a serpin like structure.
What is not a function of the respiratory system?
Answer:
Any Function that has nothing to do with gas exchange, acid-base balance, phonation, pulmonary defense and metabolism.
Explanation:
Afferent arteriolar vasoconstriction __________ blood flow into the glomerulus, which causes the glomerular-capillary blood pressure to __________, leading to a(n) __________ in the net filtration pressure and a resultant __________ in the GFR.
Answer:
Afferent arteriolar vasoconstriction decreases blood flow into the glomerulus, which causes the glomerular-capillary blood pressure to decrease, leading to a(n) decrease in the net filtration pressure and a resultant decrease in the GFR.
Explanation:
Pretty self-explanatory.
Angiosperms, or flowering plants, have a life cycle characterized by an alternation of generations, meaning that there are two different multicellular forms: one haploid form and one diploid form. In addition to the alternation of generations, other aspects of the angiosperm life cycle, including pollination, fertilization, and seed development, have enabled flowering plants to populate and thrive in a variety of environments.1. True2. False
Answer:
All of the above mentioned is true for the angiosperm. The flowering plants are otherwise known as angiosperms. The presence of flowers, endosperm present inside a seed, and a seed containing fruit are the distinguishing features of the angiosperms
Explanation:
Alternation of generations is a type of life cycle that is characterized by the presence of both the haploid and the diploid stage. The former stage is sexual and the latter is asexual in nature. The haploid gametophyte is formed via haploid spores undergoing the process of mitosis.
The process of pollination establishes pollination by the transfer of the male part of the flower to the female part that is known as the pollen and ovary respectively. In the angiosperms the landing of the pollen grain to the stigma eventually forms the pollen tube that reaches the ovary. The process of pollen transfer takes place via wind, water or pollinators. Also the process of homologous recombination adds to the genetic diversity thereby helping the plants to adapt to variety of environmental conditions.
10. In angiosperms, a _____ is contained in the anthers or ovaries, and the _____ consists of the rest of the plant. sporophyte; gametophyte gametophyte; sporophyte bryophyte; sporophyte sporophyte; bryophyte
Answer:
Gametophyte,sporophyte.
Explanation:
The gametes produce by gametophyte is contain in Anther and ovaries and sporophyte develops into zygote(plant).
Sporophyte through meiosis produces spores. Meiosis been a reductional process reduced the 2n to n(haploid chromosome).
The haploid spores formed germinate into haploid gametophyte.
Gametophyte at maturity produces gametes through mitosis. Two gametes from similar organism or organism of the same species then fuse together to produce zygote
In angiosperms, the ‘gametophyte’ is contained in the anthers or ovaries, where sexual reproduction occurs. The 'sporophyte' refers to the rest of the asexual plant that generates spores.
Explanation:In angiosperms, the term gametophyte refers to the sexual phase that is contained in the anthers, in the case of males, or ovaries, in the case of females. These gametophytes are where the production of gametes - sperm cell and egg cell - occurs. Conversely, the sporophyte consists of the rest of the plant like leaves, stems, and roots. This stage is asexual, and it generates spores that will grow into gametophytes.
So, the accurate pairing for your question would be 'gametophyte; sporophyte'.
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What particles could diffuse easily through a cell membrane?
Oxygen molecules are easy to get diffused from cell membrane. The correct option is d.
What is diffusion?Diffusion is the net movement of individual molecules of a compound across a semipermeable barrier from a high concentration area to a low concentration area.
Osmosis is the transfer of solvent particles from a diluted solution to a more concentrated solution.
Diffusion, on the other hand, is the transport of particles from a higher concentration region to a lower concentration region.
As oxygen-rich blood passes through a cell, oxygen diffuses through the cell membrane to a lower concentration area within the cell.
It is able to accomplish this simply because the oxygen molecule is small and has no charge or polarity. The mitochondria consume oxygen quickly.
Thus, the correct option is d.
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Your question seems incomplete, the missing options could be:
a) Hydrogen ion (H+)b) Glucosec) Sodium ion (Na+)d) Oxygen (O2)Ape species began to dwindle during the Miocene, leaving only a few remaining: a situation that exists up to the present. It is thought that the number of ape species reduced at that time because
The change in weather pattern caused forest to become sparse and hot weather caused the reduction of apes as they had less food and difficulty in surviving the climate.
Explanation:
In Miocene epoch volcanic mountain chains were created in Central Africa which abruptly changed the local weather.
The sea-level got drop due to global cooling of that time.
This resulted in continental drift making land connection of Africa with Eurasia.
The primates started migrating through this route.
The African forest become dry causing selective pressures in primates.
The cooler climate in Eurasia caused extinction and migration of primates to Africa in late Miocene epoch.
The hot and humid climate and less woodland caused a reduction in number of apes which were replaced by modern world monkeys.
In the south of France mosquitoes can be a nuisance. As the economy is dependent in part on tourists, this can be problematic. So they spray insecticides to kill the mosquitoes. The heroic mosquitoes had an allele for a gene in their gene pool that resists the insecticide. The two graphs below show the frequency of the resistance allele in two different seasons and two different years. The x-axis is distance from the cost. Note, that spraying stops at about 20 km from the coast. Spraying only happens in the summer? Why might the allele frequency fall so quickly at the coast in the winter?
Select one:
a. Thee allele is advantageous when there is no spraying
b. There is a fitness cost to the allele, so as soon as selection for the allele stops, it's frequency drops.
c. Because there is no gene flow between the fall and summer mosquitoes, the allele will not be passed between them.
d. Genetic drift eliminates many mosquitoes because of spraying, so the allele frequency goes down.
Answer:
There is a fitness cost to the allele, so as soon as selection for the allele stops, it's frequency drops
Explanation:
The two graphs show the frequency of the resistance allele in two different seasons and two different years , this is due to mutation a force for changing the allele frequencies( genetic drift) in a population over time
if an allele reduce fitness, it frequency will drop from one generation to the next
The allele frequency falls quickly at the coast in the winter because there is a fitness cost to the allele, so as soon as selection for the allele stops, its frequency drops. The correct answer is option : b. There is a fitness cost to the allele, so as soon as selection for the allele stops, its frequency drops.
The allele frequency falls quickly at the coast in the winter because the spraying of insecticides stops, removing the selective pressure favoring the resistance allele.
In other words, during the summer when spraying occurs, mosquitoes carrying the resistance allele have a selective advantage, but in the winter, when spraying ceases, there is no longer a benefit to having the allele.
This suggests that there is a fitness cost associated with carrying the resistance allele, such as decreased reproductive success or reduced survival in the absence of insecticide exposure.
The rapid decline in the frequency of the resistance allele at the coast in the winter suggests that there is a fitness cost associated with the allele, leading to its decrease when selection pressure is removed.
Allele frequencies of a population can change by A. natural selection. B. genetic drift. C. mutations in the gene pool. D. founder effect. E. All of the above.
Allele frequencies of a population can change through natural selection, genetic drift, and mutations in the gene pool. The founder effect can also lead to changes in allele frequencies.
option e is correct
Explanation:Allele frequencies of a population can change through natural selection, genetic drift, and mutations in the gene pool. Natural selection is the process by which certain alleles are favored and become more prevalent in a population over time.
Genetic drift is the random change in allele frequencies due to chance events. Mutations introduce new alleles into the gene pool, possibly leading to changes in allele frequencies. Additionally, the founder effect, which occurs when a small group of individuals becomes isolated and establishes a new population, can also lead to changes in allele frequencies.
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Individuals should participate in __________ exercises to increase cardiovascular endurance. A. progression B. anaerobic C. overload D. aerobic Please select the best answer from the choices provided. A B C D
Answer:
D
Explanation:
Individuals should participate in that particular type of exercise to increase cardiovascular endurance, which is the aerobic exercise that is present in Option D, and there are various types of the aerobic exercise.
What is the significance of aerobic exercise and its benefits?Aerobic exercise is a type of exercise in which the body's cells, such as muscle cells, get enough oxygen for the work and produce the most energy, whereas anaerobic exercise causes muscle cramps because the oxygen is not properly used. Aerobic exercise helps the cells work fully and maintain cardiovascular endurance, and some examples are dancing, running, etc.
Hence, individuals should participate in that particular type of exercise to increase cardiovascular endurance, which is the aerobic exercise that is present in Option D, and there are various types of the aerobic exercise.
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In the disease known as ________________, the heart cannot distribute enough blood throughout the body to reach the major organs, causing the tissues to swell with fluid.
Answer:
Congestive heart failure occurs when the heart cannot distribute enough blood throughout the body to reach the major organs, causing the tissues to swell with fluid.
Explanation:
Scientific investigation of the exact effects of environmental steroids on humans is extremely difficult since there are multiple sources of hormones in the environment. Avalid study would require a control group that has not been exposed to the chemicals being studied. Since everyone has had some exposure to environmental hormones, no control group is available to use as a reference Another way to assess the environmental hazard due to storoid hormones is to analyze the amount of residual hormones present following commercial water treatment by water treatment plants Which situation would make researchers suspect that there was an excess of steroid hormones in the environment? 1. An increase in bone fractures in seniors in the area 2. Premature puberty in girls in the area 3. An increase in mutation role in amphibians in the area 4. An increase in foot fungal infections
Explanation:
Steroid hormones are a gathering of hormones, got from cholesterol, from the class of mixes known as steroids. They are emitted by the adrenal cortex, testicles and ovaries, and by the placenta during pregnancy. Based on their receptors, steroid hormones have been ordered into five gatherings: glucocorticoids, mineralocorticoids, androgens, oestrogens and progestogens. Puberty is the point at which young ladies' bodies and psyches develop and they develop into young ladies. This typically begins when a young lady is around 10 years of age. Some of the time, however, an a lot more youthful young lady begins to give the indications of puberty. This is called intelligent (pre-KOH-shuss), or early adolescence (PU-ber-ty).Hence the right answer is option 2 Premature puberty in girls in the area".The symptoms of a certain inherited disorder in humans include breathing problems and, in males, sterility. Which of the following is a reasonable hypothesis for the molecular basis of this disorder? a. a defective enzyme in the mitochondria, b. defective actin molecules in cellular microfilaments, c. defective dynein molecules in cilia and flagella, d. abnormal hydrolytic enzymes in the lysosomes, or e. defective ribosome assembly in the nucleolus?
A reasonable hypothesis for the molecular basis of this disorder is defective dynein molecules in cilia and flagella.
Explanation:
A hereditary condition called Kartagener's syndrome refrains cilia from clearing the respiratory tract of dirt and dust. The syndrome causes due to mutation in genes that are responsible for structure and function of cilia. Mutations may occur due to smoking which causes damage to cilia.
A defect in motor protein dyenin of cilia caused immotile cilia and hence frequent infections in lungs and respitratory problems.
The motility of sperm depends on the flagella. The disorder in flagella would make sperm immotile hence the sterility in males due to rare Kartagener syndrome.
Cytoskeletol motor protein called dyein move with the microtubules is found in flagella. The mutation in the protein would cause flagella gets defective or damage causing sterility in males.
The hypothesis is made based upon the results obtain by the mutations at molecular level; in cilia and flagella.
Final answer:
The symptoms described, including breathing problems and sterility in males, can be attributed to defective dynein molecules in cilia and flagella. This condition affects the movement of substances in the respiratory tract and sperm mobility, leading to the observed symptoms.
Explanation:
The symptoms of a certain inherited disorder that include breathing problems and, in males, sterility, can be hypothetically explained by 'c. defective dynein molecules in cilia and flagella'. Dynein molecules are crucial for the movement of cilia and flagella. Cilia are present on the surfaces of many cells and play an essential role in moving substances over cell surfaces, including the respiratory tract's lining, where they help in clearing mucus. Flagella, on the other hand, are important for the movement of sperm in males. If dynein molecules are defective, it could lead to immotile cilia syndrome, which would explain the breathing problems due to mucus buildup in the respiratory tract and sterility in males due to the inability of sperm to move properly.
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Which hormone, synthesized by the anterior pituitary gland, causes the body to manufacture an abundance of muscle tissue?
a. Growth hormone
b. Prolactin
c. Thyroxin
d. Follicle-stimulating hormone
e. Adrenocorticotropic hormone
Answer:
I believe the answer is A...I'm not completely sure but I tried my best to think.
Answer:
a
because that makes the most sense and hormones