please help me with this

Answer:

Sensory nerve receptors are not able to send out messages to the brain indefinitely.

Explanation:

Receptors can be defined as protein molecules that are located inside the target cell or on its surface that receive a chemical signal. Chemical signals are released by signaling cells in the form of little, usually volatile or soluble molecules known as ligands. A ligand is a molecule that binds another specific molecule, in some cases, transporting a signal in the process. Ligands can therefore be described as signaling molecules. Ligands and receptors exist in several forms; however, a specific ligand will have a specific receptor that typically binds with only that ligand.

The loss of sun glasses on top of our head is due to the fact that the sensory nerve receptors are not able to send out messages to the brain indefinitely.

Answer:

They prevent a population from exceeding a certain number.

Explanation:

Answer:

Coffee contains a natural insecticide known as xanthines.

Explanation:

Coffee contains xanthines, a purine base chemical that functions as a drug precursor in some medications and as an ingredient in the manufacture of pesticide.

Xanthines can be also be found naturally in other substances such as theobromine and theophylline.

Hence, Theo must have skipped his coffee during the application of organic insecticide to his plants due to the fact that coffee contains a substance that can naturally act as an insecticide.

Answer:

macroevolution

Explanation:

Macroevolution occurs due to the genetic differences accumulates in the population of the same species which gets reproductively isolated from the older population and got different environments and resources to live.

Macroevolution leads to the creation of a new species over a long period of time because of the genetic difference that occurs due to mutation in the gene in the population who got reproductively isolated. So the new species evolved from the macroevolution.

Answer:

When first used in medicine in the 1940s, penicillin was uniformly effective in killing the bacterium Staphylococcus aureus. Today, the Darwinian selection has led to an increase in antibiotic-resistant alleles, and humans are increasingly at risk from untreatable Staphylococcus aureus infections.

Explanation:

Those bacterias which were affected by the penicillin were filtered off from the environment since the offspring of those susceptible bacterias were decrease by time until total extinction.

But by the natural mutation of bacterias, some bacterias can originate a offspring of bacterias which were capable of resist the action of an antibiotic. Those genes could also be carried out by a plasmid conjugation creating new colonies which are resistant to the penicillin.  

Answer:

Type II Hypersensitivity

Explanation:

Hypersensitivity reactions are exaggerated immune responses that are detrimental to the host and Type II Hypersensitivity is also known as antibody-mediated hypersensitivity.

This type of hypersensitivity reaction involves humoral immunity and it occurs when IgM or IgG antibodies bind to cell surface antigens which lead to complement activation or IgG/FcγR interaction.

Clinical manifestations of Type II hypersensitivity responses include trans- fusion reactions, hemolytic disease of the newborn, autoimmune reactions to cellular antigens or tissues and hyperacute rejection of transplanted tissue.

Complete Question:

Which Kingdom of living things consists entirely of multi-celled, heterotrophic organisms?

A) Animal

B) Fungi

C) Plant

D) Protist

Correct Option:

Animal Kingdom of living things consists entirely of multi-celled, heterotrophic organisms.

Option: A

Explanation:

The system of scientific classification in biological science is categorized into seven main groups: kingdom > phylum > class > order > family > genus > species. Here the kingdom is the largest group while smallest is the species. The term phylum is being used in the Kingdom of Animals, and is the second largest group.

The Kingdom of Animals is made up of multi-cellular, heterotrophic species which feed on other entities to survive. Some of the animal properties in this kingdom are able to establish, function independently, and reproduce during their existence.

Answer:

The answer is Similarity

Explanation:

The distinct features of the two groups of birds i.e brown cardinals and bright red cardinals illustrates the principle of similarity. The principle of similarity states that things that share visual features such as shape, size, color, texture, value or orientation will be seen as belonging together or being in a unified group

Final answer:

Jimmy's categorization of birds into brown and bright red cardinals based on color best illustrates the principle of similarity, a key concept in Gestalt psychology where items that share common features are perceived as part of a group.

Explanation:

The scenario where Jimmy perceived almost half the birds in the yard as brown cardinals and the rest as bright red cardinals, categorizing them into two distinct groups based on color, best illustrates the principle of similarity. The principle of similarity is a concept within the theory of Gestalt psychology which suggests that elements that are alike tend to be perceived as a group. This is because our minds tend to organize sensory input into groups or categories that share common attributes. For instance, in sports, fans easily differentiate teams based on the color of their uniforms, grouping players accordingly. This shows how the principle of similarity operates in everyday observations and categorizations, much like Jimmy's classification of cardinals by their color.

Answer:

A human red blood cell in an artery of the left arm is on its way to deliver oxygen to a cell in the thumb. To travel from the artery to the thumb and then back to the left ventricle, this red blood cell must pass through two capillary beds.

Explanation:

Capillary beds are the netwrok of capillaries present in all tissues of body. They are the sites of diffusion and exchange of material within the body (oxygen, CO2 , glucose etc)

As the humad red blood cell travels from the artery of left arm to thumb, it passes through one capillary -bed as it has to supply oxygen to  a cell in thumb and as it moves through the artery back to the left ventricle, it again pass through another capillray-bed.

Hence the Red blood cell will pass through two capillary beds.

Answer: C.) male 5 and female 6

Explanation: A pedigree chart represents the inheritance of a specific trait or traits along generations. In the representation, squares are male and circles are female.

The question asks for least likely to have offspring with the disorder. Analysing the chart, it is observed that male 1 and female 2 have offsprings with shaded shapes: individuals 3, 7  and 10, so their probability of having children with the disorder is not small. It's 3 in 5.

Male 3 and female 4 also have an offspring with a genetic disease, so ti's not this couple.

Male 9 and female 10 have 2 offspring with the disorder. So their probability is not so low.

Male 5 and female 6 are the only couple without an offspring with the trait. So, their chance of having an offspring having the disorder is the least.

In conclusion, couple 5 and 6 have the least probability of having an offspring with the genetic disorder.

Answer:

C. Male 5 & female 6

Explanation:

Edge. 2022 ^

Answer:

The potential energy (P.E) and the kinetic energy (K.E) are two types of distinct energy that is commonly observed in our day-today's life.

Usually, K.E is defined as a type of energy that is produced when an object is in motion. Where, as P.E is a type of energy that is stored in an object when that object is placed at a certain height.  

In the given condition, when the skateboarder is at the top of the hill, then at that position, it is comprised of maximum P.E. As the he slowly comes down the hill, then the P.E gradually decreases, and the K.E gradually increases. This shows the P.E is slowly changing into the K.E. And as it comes down, the K.E increases, and eventually when he stops, then both the K.E and P.E becomes zero.

This changes occurs because energy can never be created nor destroyed, and it changes from one form to another.

Answer:

The potential energy and kinetic energy are always in flux. At the top of the hill, potential energy is at its highest and kinetic energy is at its lowest because the skateboarder stops for just a moment before being pulled down the hill by the force of gravity. At the bottom of the hill, kinetic energy is the highest because the skateboarder reaches maximum speed.

Explanation:

PLATO

Answer: Option C) Animal

The cell wall is tough, flexible and fairly rigid layer that surrounds some types of cells. It is located outside the cell membrane and provides cells with structural support and protection. All BUT ONE type of organism has cells with cell walls. That is an animal

Explanation:

One distinguishing feature of animal cells compared to other living cells is the absence of cell wall.

However, the animal cell possess a cell membrane, with which it regulates substances entering or leaving the cell, and also provide protection and mechanical support for the cell against foreign invaders such as pathogens.

Answer:

Flu

Explanation:

The probability that their child will have sickle-cell disease is 1/4.

Why is this correct?

Karen and Steve both have a sibling affected by sickle-cell disease. Despite neither Karen nor Steve, nor their parents, showing signs of the disease, none of them have undergone testing to confirm if they carry the sickle-cell trait.

Given this limited information, let's ascertain the probability that their child might inherit sickle-cell disease. This hereditary condition follows a recessive pattern, manifesting only if both parents carry the sickle-cell trait.

In light of their siblings' condition, it's deduced that each of their parents likely carries the sickle-cell trait. Assessing whether Karen and Steve carry the trait provides insight into the likelihood of their child inheriting the disease.

Employing a Punnett square to outline genetic possibilities:

S = Sickle-cell allele

N = Normal allele

Karen's Possible Gametes: S or N

Steve's Possible Gametes: S or N

Potential genetic combinations:

   |   S   |   N   |

---------------------

S   | SS    |  SN   |

---------------------

N   | SN    |  NN   |

---------------------

For their child to develop sickle-cell disease (SS), both Karen and Steve must carry the sickle-cell trait (SN) and pass on the sickle-cell allele (S). This particular outcome arises in 1 out of 4 possibilities (SN).

Consequently, the probability that their child will have sickle-cell disease is 1/4.

Complete question:

Karen and Steve each have a sibling with sickle-cell disease. Neither Karen nor Steve nor any of their parents have the disease, and none of them have been tested to see if they have the sickle-cell trait.Based on this incomplete information, calculate the probability that if this couple has a child, the child will have sickle-cell disease. Express your answer as a fraction using the slash symbol and no spaces (for example, 1/16).

Answer:

Clonal selection identifies B lymphocytes

Answer:

It's easier to train a pigeon to peck for a food reward than to flap its wings for a food reward. This illustrates the importance of Shaping in learning.

Explanation:

The Shaping process involves the steps which makes or even tempts any individual to carry out such actions which are not natural or does not belongs to the innate system of the individual but there are some influencing factors involved for the organism which makes to under go the very process that happens.

Answer:

Complement proteins can bind to pathogens and render them inert

Explanation:

Compliment proteins can bind to pathogens and render them inert by not being active

Complement proteins bind to pathogens and form a coating called the complement membrane attack complex (MAC), rendering the pathogens inert and aiding in their destruction.

Complement proteins can bind to pathogens and form a coating. This coating is called the complement membrane attack complex (MAC) and it helps to recruit immune cells and destroy the pathogen. By forming a coating, complement proteins render the pathogens inert and enhance their recognition by immune cells.

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Answer:

C. Point mutations

Explanation:

Point mutation involves the insertion or deletion of a base pair or the substitution of a single base for another in a gene. Point mutation rarely cause a significant change in a gene.

Gene duplication involves the repetition of a gene-containing DNA region in an organism. It can result from errors in DNA replication/repair and other circumstances in the cell.

Horizontal gene transmission involves the transmission of gene-carrying DNA materials between different genomes of different species of organisms.

Transposable elements are regions of DNA that have the ability to move from one place to another within the same genome. They often create a kind of mutation and change the genetic identities of cells.

The correct option is C.

Answer:

61 bpm

Explanation:

By applying the relativistic Doppler Effect;

[tex]f= f_o} \sqrt{1-\frac{v^2}{c}[/tex]

where;

frequency (f) = the heartbeat rate according to an observer that is at rest relative to the earth

[tex]f_o[/tex] = initial frequency of the heart beat = 70 beats per minutes (70 bpm)

v = speed of the spacecraft = 0.50 c

c = speed of the light

Replacing our values in the above equation; we have:

[tex]f= 70} \sqrt{1-\frac{0.5c^2}{c}[/tex]

[tex]f= 70bpm} \sqrt{1-{0.5^2}[/tex]

f = 60.62 bpm

f ≅ 61 bpm

The question is about Einstein's theory of relativity and time dilation. The apparent heartrate of an astronaut moving relative to the earth at a speed of 0.50c will appear slower from earth due to time dilation. We can calculate the dilated heartrate using the time dilation formula in special relativity.

This question relates to Einstein's theory of relativity, specifically time dilation, which refers to the idea that time passes at different rates for different observers depending on their relative velocities and the influence of gravity.

Here, the spaceship is moving at speed, 0.50c (where c is the speed of light), relative to the earth. The astronaut's heartrate is measured to be 70 beats per minute from his perspective. According to the theory of relativity, the astronaut's clock would appear to tick slower when viewed by an earthbound observer due to time dilation.

To find the apparent heartrate as observed from earth, we use the time dilation formula in special relativity: t' = t / sqrt(1 - v^2/c^2), where t is the proper time (time measured by the astronaut), v is the relative velocity (0.50c in this case), and c is the speed of light. Plugging in the values and solving will give the dilated heartrate as observed from the earth.

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Answer:

The size of the molecule

Explanation:

Some small molecules can be transported into pur out of the cell by passive transport. Passive transport is a mechanism of transport that does not require energy, instead relying on diffusion of molecules from a high concentration of that molecule to a lower concentration of that molecule (i.e. down a concentration gradient)

Molecules that can participate in passive transport include small, uncharged molecules that can cross the phospholipid bilayer of the cell membrane such as water, carbox, dioxide and oxygen.

In contrast, endocytosis/exocytosis are types of active transport that require energy. Substances that cannot freely cross the membrane due to their size are transported into/out of the cell via a vesicle system. Endocytosis involves the cell membrane engulfing the particle to bring it into the cell, exocytosis is the reverse, where vesicular transport allows large molecules to leave the cell.

Substances that undergo endocytosis/exocytosis include cell debris, complex proteins, large macromolecules and waste material

Answer:

The answer is A.

Explanation:

The carbon and nitrogen cycles can be broken down into the following steps. The nitrogen can be found in the soil, in the air, in plants and animals. It is transferred to a different body when a plant or an animal is eaten. Then the digestion happens and the nitrogen goes back to the soil, or water. Through this process the cycle is completed. Carbon cycle can follow the same path. These cycles also include the breathing of all organisms and the decomposition of all organisms and even rocks etc.

So the answer is A.

I hope this answer helps.

Answer:

A. Remain at constant levels, although the form and location of the materials can change.

Explanation:

Answer:

The muscle involved in this fracture is supraspinatus.

Explanation:

Supraspinatus is one of the rotator cuff muscles, along with infraspinatus, teres minor and subscapularis muscles. Supraspinatus is located deep to the trapezius muscle in the posterior scapular region, extending from the supraspinous fossa of scapula to the proximal humerus.

Together with the other rotator cuff muscles (infraspinatus and teres minor ), supraspinatus stabilizes the glenohumeral (shoulder) joint during the movements of the upper limb. Additionally, it assists in the abduction of the arm.

Avulsion of this structure could result in detachment of any of these rotator cuff muscles, depending upon the size and scope of the fracture. However, the wrestler is unable to initiate abduction of the upper limb, which implies damage to the supraspinatus muscle.

Osteoblasts, during bone deposition, secret an extracellular matrix made up of collagen and other proteins. This matrix is later mineralized to form bone tissue.

The cells known as osteoblasts play a crucial role in the process of bone formation and growth. During the process of bone deposition, osteoblasts are actively involved in secreting an extracellular matrix that consists of collagen and other proteins. This matrix subsequently mineralizes to form bone tissue. Hence, in answer to your question: osteoblasts secrete an extracellular matrix, essentially made up of collagen and other proteins, during the process of bone deposition.

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Osteoblasts, which are involved in bone formation, secrete osteoid, an uncalcified matrix that hardens into bone when mineral salts are deposited onto it. Trapped within this hardened matrix, osteoblasts then transform into osteocytes, the primary and most common cell type in mature bone.

Osteoblasts, the bone cells responsible for forming new bone, secrete osteoid, which is an uncalcified matrix. This osteoid hardens within a few days as mineral salts are deposited on it, thus entrapping the osteoblasts within. Once entrapped within this matrix, the osteoblasts transform into osteocytes, which are the primary cells of mature bone and the most common type of bone cell.

Osteoblasts are found in the growing portions of bone, including the periosteum and endosteum, and they do not divide. They synthesize and secrete the collagen matrix and calcium salts, vital components for bone formation. This process is crucial in maintaining the mineral concentration of the matrix, improving bone density, and ensuring healthy bone growth.

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A species that is habitat specialist and lives at the highest elevation.

Explanation:

An ecosystem consist of plants, animals as well as micro-organisms but due to climate change the plants as well as animals are in danger . The case that has been provided in the question where due to climate change the temperature rises as a result the species living at the highest elevation are in problem .

Due to rise in temperature the snow is melting and the sea water level is rising. The animals and plants adapt themselves according to the climate where they are residing but suddenly if climatic change take place they will be unable to survive.

The animals which are mostly affected due to climatic change are snow leopard, polar bear, giant panda.  

The interaction between the biotic and the abiotic components of an environment is called an ecosystem.

The correct option of the following is B.

The arrangement of the living material and the non-living material altogether is called an ecosystem, the abiotic and non-living materials are wind, water, gases, and etc.

The earth the different levels depending on the longitude and the latitude. Climate change is due to the increase in the amount of CO2 in the atmosphere.

The availability of the gases is very less in the highest elevation due to an increase in pressure. Therefore, climate change due to increases in Co2 will impact the highest elevation location.

Hence, the correct option is B that is - a species that is a habitat specialist and lives at the highest elevations.

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Answer:

23.33%

Explanation:

Money put in ATM per day=$7850

We have to find the percent of days in a month you should expect to run out of cash.

Form given data

There are 7 days in which you run out cash more than $7850

Total number  of days in a month=30

Percent formula:[tex]\frac{corresponding \;days}{Total\;number\;of\;days}\times 100[/tex]

Using the formula

Percent of the days in a month you  should expect to run out of cash=[tex]\frac{7}{30}\times 100[/tex]=23.33%

1)Blood pressure 158/104

2)urinary output 20ml per hour

3)Reflexes 21

4)Platelet count 150,000

Answer: The correct answer is (2) urinary output 20ml per hour

Explanation:

Preeclampsia is a condition in pregnant women, or could develop after delievry, where her blood pressure rises significantly, >140/90 mmHg(recorded on two occasions,atleast 4 hours apart).Moreover urine test indicates protein in her urine(proteinuria), swelling particularly of hands,legs and feet(edema),severe headaches along with many other symtoms.

On the next hourly assessment,

• The client's BP was recorded as 158/104, which is almost the same as it was initially recorded,i.e 158/100, which means her BP did not rise significantly.

•The client's reflexes are normal

•The client's platelet count is normal too, although it is on a lower side(normal range is between 150,000-450,000)

•Decrease in urinary output(20ml/hr) is an indication of worsening of preeclampsia because this indicates there is decreased renal perfusion which may subsequently lead to decreased GFR(glomerular filtration rate).

Answer:

The colon.

Explanation:

The colon, also known as the large intestine is one of the major organs of the digestive system and plays a vital role in the processing of food and excretion of waste. It is divided into the ascending colon, transverse colon, descending colon and sigmoid colon.

The colon has a large surface area and plays a major role in the reabsorption of fluids and the processing and formation of waste which it pushes towards the rectum to be expelled.

Diarrhea is a condition which is characterized by frequency of bowel movements and passage of loose and watery stools. It has various causes most of which affects the normal functionality of the colon thereby limiting it's ability to reabsorb water and fluids. Such causes which affect the colon include; Bacterial infections, laxative abuse, diseases of the colon such as ulcerative colitis and Crohn's disease etc.

Answer:

Carbohydrates may be defined as the polymers of the sugars and one of the most important biomolecule of the living organisms. Carbohydrates plays an important structural and functional role.

Carbohydrates are always present on the exoplasmic surface of the plasma membrane. The are present in the association with the proteins and lipids as glycoproteins and glycolipids. These carbohydrates acts as the signaling molecule that display information on cell surface.

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Answer:

Broiler Chicken

Explanation:

They are produced from a cross between the Cornish and White Plymouth Rock chicken breeds