In humans, a combination of cx chromosomes results in a female zygote and that of xy results in male zygote from whom does a male zygote inherit an X chromosome
What are chromosomes?
A. Strands of DNA wrapped around proteins
B. Any organism that contains DNA
C. The alleles that cause certain traits
D. A form of virus that infects cells
in human excess blood glucose is stored in the liver and in muscle tissues in form of glycogen.glycogen is a long chain of glucose molecules bonded together.because of this glycogen is called a
The correct answer is that because of this glycogen is called a polysaccharide.
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Which pair of compounds are raw materials for cellular respiration
Final answer:
The raw materials for cellular respiration are oxygen and glucose, which are used by cells to generate ATP, with carbon dioxide and water as byproducts, intertwining with the carbon cycle and photosynthesis.
Explanation:
The pair of compounds that are raw materials for cellular respiration are oxygen (O₂) and glucose (C₆H₁₂O₆). In the process of cellular respiration, cells take in these raw materials to produce energy in the form of adenosine triphosphate (ATP), along with byproducts carbon dioxide (CO₂) and water (H₂O). Oxygen is acquired through breathing in animals, and glucose comes from the digestion of food. This process not only generates vital energy for cellular activities but also plays a key role in the carbon cycle, interacting with the process of photosynthesis in plants.
DNA is spread out in the nucleus of a cell of non-dividing cells it is called ___________
The pupil opens and closes automatically explain wether this is involuntary or voluntary action
Which structure is labeled X in the diagram below?
A.nucleic acid
B.lipid envelope
C.protein tail
D.capsid protein
Answer;
D. Capsid protein
Explanation;
-Capsid refers to the protein shell of a virus. Capsid is made up of protomers which makes oligometric structural subunits.
The capsid play various roles which includes;
Protecting the nucleic acid digestion by host enzymesIt helps in the attachment of the virion to the host cell It also provides proteins that enable the penetration of the virion to the host cell membrane.The correct answer is option D. Capsid protein
This protein is found in the virus. It is the protein shell of virus. Capsid protein is made of protomers which makes oligometric structural subunits.
It has several functions:
It protects the digestion off nucleic acids by the host enzymes.
It helps in the attachment and penetration of the virion to the host (cell membrane)
What anatomical feature is responsible for the cervical enlargement of the spinal cord?
The cervical enlargement of the spinal cord is a region with a larger population of neurons that controls the appendicular muscles, especially in the upper limbs. This enlargement is supported by the structure of the cervical vertebrae, specifically those like C4 and C5.
Explanation:The cervical enlargement of the spinal cord corresponds to the region of the ventral (anterior) horn that has a larger population of neurons. This region is responsible for the regulation of the appendicular muscles, particularly those in the upper limbs, including the fine musculature of the fingers. The density of the neuronal population in the cervical enlargement is greater because of the greater control required over these muscles.
The cervical vertebrae, particularly those like C4 or C5, are designed to accommodate this enlargement. They have features such as a small body and a bifid (Y-shaped) spinous process. These vertebrae also have openings called the transverse foramen for the passage of cervical spinal nerves and an artery that supplies the brain.
In summary, cervical enlargement is a distinct anatomical feature of the spinal cord and is characterized by a high density of neurons in the anterior horn meant to control the appendicular muscles of the upper limbs. It is accommodated by the structure of the cervical vertebrae.
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A geologist's job includes:
determining the living organisms occupying an area
determining the chemicals cycling through an area
determining the history of an area
determining the magnitude of light in an area
Please Please help me!!!
On the New York seismograph, the first P wave was recorded at 9:01 UTC. UTC is the international standard on which most countries base their time. At what time (UTC) did the earthquake actually occur? Explain.
The recorded time of the first P wave on the New York seismograph was 9:01 UTC. However, considering the travel time of P waves, the earthquake actually occurred at 9:00 UTC, with the one-minute difference accounting for the waves' transit time.
Explanation:The New York seismograph recorded the first P wave at 9:01 UTC, indicating the initiation of the seismic activity. However, P waves are the fastest seismic waves and are the initial signals of an earthquake. The time lag between the P wave detection and the actual earthquake occurrence is due to the travel time of the seismic waves from the earthquake epicenter to the seismograph station.
To determine the actual time of the earthquake, we need to consider the travel time of the P waves. The P waves typically travel at an average speed of about 6 to 7 kilometers per second through the Earth's interior. Using the formula Time = Distance/Speed, we can calculate the time it took for the P wave to reach the seismograph station. Assuming a distance of 0 km (since it's the local station), the time is approximately 1.5 to 1.7 seconds. Subtracting this travel time from the recorded time of 9:01 UTC gives us the actual time of the earthquake, which is 9:00 UTC.
In summary, the 1-minute discrepancy between the recorded P wave and the actual earthquake time is attributed to the travel time of the seismic waves. By accounting for this travel time, we can accurately determine when the earthquake occurred, in this case, at 9:00 UTC.
Geologists discovered fossil evidence of mesohippus, an ancestor of the modern horse. Mesohippus lived in North America about 40 million years ago. Mesohippus was about two feet tall, ran on hooves with three toes, and had large, grinding teeth. What statement is BEST supported by the fossil evidence? A) Ancient horses were once carnivores. B) Horses have evolved over the last 40 million years. C) Horses migrated from South America into North America. D) Modern-day horses share a common ancestor with all mammals.
Answer: B: Horses have envoled over the last 40 million years
Explanation:
Prokaryotes and eukaryotes are similar in all of these aspects except
Answer:
the answer is The way in which the genetic material is found.
Explanation:
The main difference between prokaryotic and eukaryotic cells is that in prokaryotic cells, the genetic material is not separated from the cytoplasm since they lack a defined nucleus, so the genetic material is dispersed in its cytoplasm, while the eukaryotes present the genetic material organized in chromosomes surrounded by a membrane that separates them from the cytoplasm.
The discovery that the moon is similar in composition to the outer portions of the earth most supports the _____ theory.
Answer: Giant-Impact Theory
Explanation:
There are many theories discussing the formation of moon. One of the most accepted theories is:
Giant-Impact theory which suggests that a Mars sized object collided with the Earth and the debris clumped together due to gravitational force and started orbiting earth which is now the Moon. Thus, the moon has similar composition as the outer portions of the Earth.
Which is an example of a eukaryote? A) Euglena B) AIDS virus C) lactobacillus Eliminate D) cyanobacteria
Final answer:
The example of a eukaryote from the provided options is A) Euglena. Euglenophytes such as Euglena have a nucleus enclosed within a membrane, which is a defining characteristic of eukaryotic cells. The other options are either prokaryotes or viruses, which are not eukaryotes.
Explanation:
The example of a eukaryote from the given choices is A) Euglena. Eukaryotes are organisms whose cells have a nucleus enclosed within a membrane, along with various other specialized organelles. Euglenophytes, including Euglena, are unicellular, aquatic organisms that have characteristics of algae and fall under the domain Eukarya, possessing a distinct nucleus. In contrast:
B) AIDS virus (HIV) is not a eukaryote; it is a virus, which lacks a cell structure and is considered neither a prokaryote nor a eukaryote.C) Lactobacillus is a genus of bacteria, so it is a prokaryote.D) Cyanobacteria are also prokaryotes as they lack a nucleus and membrane-bound organelles.Therefore, the correct answer to the question is A) Euglena.
The thermonuclear fusion that occurs in the sun is a process involving?
A)electricity and hydrogen
B)heat and fused nuclei
C)the creation of energy
D)the destruction of energy
heat and fused nuclei
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In what era did reptiles become increasingly dominant??
Cenozoic
Paleozoic
Mesozoic
Precambrian
17. Replication, transcription, and translation
A.
all refer to the synthesis of macromolecules.
B.
refer to RNA synthesis, DNA synthesis, and protein synthesis, respectively.
C.
require the synthesis of polysaccharides.
D.
would be expected to be exergonic reactions.
E.
all use nucleotides as building blocks.
...?
Replication, transcription, and translation correspond to DNA synthesis, RNA synthesis, and protein synthesis, respectively, and they are crucial anabolic processes that facilitate the flow of genetic information from DNA to RNA to protein.
Explanation:When it comes to replication, transcription, and translation, these terms refer to different processes within a cell but are all centered around the handling of genetic information and the synthesis of biomolecules.
Replication refers to the process of copying DNA before cell division, ensuring that each new cell receives a complete set of genetic instructions. Replication is considered an anabolic process as it builds new molecules - in this case, DNA.
Transcription is when the information in DNA is transcribed into messenger RNA (mRNA). This RNA synthesis lays the groundwork for making a specific protein.
Lastly, translation is the process where ribosomes read the information on mRNA and synthesize proteins. During this process, amino acids are linked together to form polypeptides, which fold into functional proteins. Translation is also considered an anabolic process.
Therefore, the correct answer to the student's question, '17. Replication, transcription, and translation,' would be B. They refer to RNA synthesis, DNA synthesis, and protein synthesis, respectively.
Glucose will pass through a cell membrane with the aid of what?
What are body parts similar in origin and structure called
Which of the following statements is true about the taiga biome, but not the alpine?
a.
Temperatures are below freezing during the winter.
b.
Precipitation can average 12 inches annually.
c.
It has two distinct seasons.
d.
It is characterized by coniferous trees.
the correct answer is D
What would happen if gametes were not haploid?
a. The offspring would have half the number of chromosomes it is supposed to have.
b. The offspring would have double the number of chromosomes it is supposed to have.
c. The offspring would be genetically identical to it's parent.
d. The offspring would be genetically different from it's parent.
Which of these would BEST describe what would happen to a cell in a time of low nutrient supply?
a. The cell's growth would speed up significantly, leading to longer periods of time between cell division.
b. The cell's growth would slow down significantly, leading to longer periods of time between cell division. Eliminate
c. The cell's growth would speed up significantly, leading to shorter periods of time between cell division.
d. The cell's growth would slow down significantly, leading to shorter periods of time between cell division.
A chef chops vegetables into a bowl of water. Would you expect the vegetable slices to gain or lose water? Explain your answer in terms of water potential.
Imagine that you are an agri-science consultant to a large corporate farm that raises 7000 acres of wheat on a desert land adjoining the Mediterranean Sea. Just before the wheat matures, all the wells used for irrigation water run dry. The farm manager wants to irrigate the fields with water drawn from the Mediterranean. From previous tests, you know that the average solute potential of root tissue taken from the wheat fields is -11.13 bars. You test the seawater and determine its solute potential to be -24.26 bars. What will you advise the farm manager and why?
A marine clam is mistakenly added to a freshwater aquarium. What will happen to the clam and why?
When a chef chops vegetables into a bowl of water, the vegetable slices would gain water due to osmosis. The farm manager should advise against using seawater for irrigation as it would lead to dehydration of the wheat plants. When a marine clam is added to a freshwater aquarium, it would likely dehydrate and die.
Explanation:When a chef chops vegetables into a bowl of water, the vegetable slices would gain water due to the process of osmosis. Osmosis is the movement of water molecules from an area of lower solute concentration (higher water potential) to an area of higher solute concentration (lower water potential). In this case, the vegetables have lower solute concentration compared to the water in the bowl. Therefore, water will move into the vegetable slices, causing them to gain water.
Regarding the farm irrigation dilemma, the water potential of the seawater (-24.26 bars) is lower than the solute potential of the wheat field root tissue (-11.13 bars). To ensure water uptake by the wheat plants, the farm manager should advise against using seawater for irrigation. The lower water potential of seawater would create a water potential gradient that would lead to water moving out of the wheat plants, causing dehydration and potentially damaging or killing the crops.
When a marine clam is mistakenly added to a freshwater aquarium, the clam would likely dehydrate and die. The freshwater has a higher water potential compared to the marine clam's tissues, resulting in water moving out of the clam through osmosis. As a result, the clam would lose water and wouldn't be able to survive in the freshwater environment.
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which statement best describes the relationship between the hypothalamus and the pituitary gland?
a. the anterior pituitary gland makes hormones that are released by the hypothalamus
b. the hypothalamus produces releasing hormones that promote the release of particular hormones from the anterior pituitary
c. the hypothalamus produces releasing hormones that promote the release of particular hormones from the posterior pituitary
d. the posterior pituitary sends nervous signals to the hypothalamus to prompt the release of hormones
The hypothalamus produces releasing hormones that stimulate or inhibit hormone secretion from the anterior pituitary; the posterior pituitary stores and releases hypothalamic-produced hormones.
Explanation:The correct answer to the question about the relationship between the hypothalamus and the pituitary gland is choice b. The hypothalamus produces releasing hormones that promote the release of particular hormones from the anterior pituitary. The anterior pituitary manufactures seven hormones, of which the production is regulated by the hypothalamic hormones through the hypophyseal portal system. These hypothalamic hormones can either be releasing or inhibiting, thereby controlling the amount of hormone secreted by the anterior pituitary. Conversely, the posterior pituitary does not make hormones but stores and releases hormones like ADH and oxytocin, which are produced by the hypothalamus.
list five features that form by glacial depositions
Match the following types of nervous systems with their functions.
1. central
2. peripheral
3. somatic
4. autonomic
5. sympathetic
6. parasympathetic
sensory and motor nerves running to and from the CNS
main interpretation and processing center
relaxing responses
controls voluntary responses
controls automatic responses
fight-or-flight responses
The following are the types of nervous system and their functions.
1. Parasympathetic- functions as the relaxing response.
2. Sympathetic - functions as the flight and fight response.
3. Autonomic - it functions as the controller of automatic response.
4. Somatic- functions as controling voluntary response.
5. Peripheral- works as motor nerves and sensory which runs from and to central nervous system.
6. Central- works as the main interpretation and center of processing.
The CNS processes and interprets information, while the PNS transmits sensory and motor signals. The somatic nervous system controls voluntary responses, and the autonomic nervous system controls involuntary responses, including the sympathetic (fight-or-flight) and parasympathetic (relaxing) systems.
Match the Types of Nervous Systems with Their Functions
Central nervous system: main interpretation and processing centerPeripheral nervous system: sensory and motor nerves running to and from the CNSSomatic nervous system: controls voluntary responsesAutonomic nervous system: controls automatic responsesSympathetic nervous system: fight-or-flight responsesParasympathetic nervous system: relaxing responsesThe central nervous system (CNS) consists of the brain and spinal cord, which are responsible for interpreting information and processing it. The peripheral nervous system (PNS) acts as a communication line, transmitting sensory and motor signals to and from the CNS. The somatic nervous system, a part of the PNS, controls voluntary movements of muscles, while the autonomic nervous system governs involuntary functions such as heart rate and digestion. The autonomic nervous system is further divided into the sympathetic nervous system, which handles 'fight-or-flight' responses in stressful situations, and the parasympathetic nervous system, which promotes 'rest and digest' responses during periods of relaxation.1. Pigs have 38 chromosomes. Cells created during mitosis will have _____.
A<19 chromosomes
B<38 chromosomes
C<76 chromosomes
2.Dominant genes _____.
A
B
C
B
3.Humans have 46 chromosomes. A human egg cell has _____.
A<23 chromosomes
B<46 chromosomes
C<92 chromosomes
4.How can mutation positively help organisms?
A
B
C
Answer:
1.A:19 3.A:23
Explanation:
I'm sorry but i do not know what 2. and 4 means.
I know 1. and 3. because it was in biology.
Final answer:
1. Cells created during mitosis will have 38 chromosomes. 2. Dominant genes are expressed when there is at least one copy of the dominant allele present. 3. A human egg cell will have 23 chromosomes. 4. Mutation can positively help organisms by leading to the development of new traits and increasing genetic diversity.
Explanation:
1. Cells created during mitosis will have B<38 chromosomes because mitosis is a type of cell division that results in the production of two daughter cells, each with the same number of chromosomes as the parent cell. Therefore, if pigs have 38 chromosomes, the cells created during mitosis will also have 38 chromosomes.
2. Dominant genes can be represented by the letter B. Dominant genes are expressed when there is at least one copy of the dominant allele present in the genotype. This means that the dominant gene will be observed in the phenotype, even if there is also a recessive gene present.
3. A human egg cell will have A<23 chromosomes. This is because during meiosis, the process of cell division that produces gametes, the number of chromosomes is halved. As humans have 46 chromosomes in their somatic cells, the egg cell will have half that number, which is 23 chromosomes.
4. Mutation can positively help organisms in several ways. For example, a mutation can lead to the development of new traits, which can provide an advantage in a changing environment. Mutations can also increase genetic diversity within a population, which can enhance the ability of the population to adapt to different conditions.
A membrane which limits the type of molecules which will pass through it is called .
A membrane which limits the type of molecules which will pass through it is called a semi permeable membrane.
A semipermeable membrane is a membrane which can be biological or artificial, that will allow the movement of certain molecules through them by diffusion. Several factors such as pressure, concentration, temperature of the molecules on each side, and also the permeability of the membrane to each solute determine the rate of passage of the molecules.
Break down the terms
Biceps
Triceps
a monomer is the (building block,many molecules) of a biomolecule