Answer:
In general, bird karyotypes have a high diploid number (2n) of typically around 80 chromosomes that are divided into macro- and microchromosomes
Why are chromosomes arranged in homologous pairs in meiosis
Answer:
They allow for the recombination and random segregation of genetic material from the mother and father into new cells.
Explanation:
what can be said about altitude, atmospheric pressure, and the partial pressure of oxygen? check all that apply.
As both altitude and atmospheric pressure increase, the partial pressure of O2 will decrease.
Though I could not locate the options online to provide an exact answer, I can offer a general overview of the question at hand.
The interactions between altitude and the partial pressure of oxygen are inversely proportional. This means that as one increases, the other will decrease. The proportion of oxygen is 21% of the air content at all altitudes. However, as the altitude increases, the atmosphere becomes thinner, meaning that the partial pressure of O2 will decrease given that 21% of a thinner atmosphere results in less oxygen.
On the other hand, the relationship between atmospheric pressure and oxygen is that they are directly proportional. This means that as one decreases, the other does as well. In this case, since atmospheric pressure is the sum of the partial pressures of all gases, we can conclude that as it decreases, so to will the partial pressure of oxygen.
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nerve fibers are insulated from one another by __________.
Answer:
endoneurium
Explanation:
The endoneurium is a layer of connective tissue composed of endoneurial cells that surround and protect the myelin sheath of each myelinated nerve fiber.
nerve fibers are insulated from one another by endoneurium.
What are nerve fibers and their composition?A nerve fiber is a long axon from a nerve cell (neuron muscle). The body of the nerve cell is anatomically located either inside the ganglia of the peripheral nervous system or within the central nervous system.
The ganglionic neurons' axons that travel from the retina's vitreal surface to the optic disc make up the nerve fiber layer. These axons are not myelinated until they reach the optic disc and break through the sclera. The optic disc's white color is a result of oligodendrocytes' myelination of them at this point. They help in the communication of two nerve fibers.
Thus, nerve fibers are insulated from one another by endoneurium.
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can someone summarize this for me
“summarize the information to demonstrate that you understand the concept of negative feedback “
Answer:
Short paragraph:
Homeostatis is the process by which the body maintains a stable internal environment. The hypothalamus is a part of the brain that regulates many key body processes. It works to restore the system to its normal state when an internal change in one of these systems occurs.
Long paragraph:
The hypothalamus is a part of the brain that regulates many key body processes including internal body temperature, hunger, thirst, blood pressure, and daily (circadian) rhythms. When the brain receives signals from the body about an internal change in one of its systems, it works to restore the system to its normal state. For example, the normal internal temperature for the human body is approximately 98.6 degrees Fahrenheit. If the body temperature rises because of exercise, the body will try and cool itself off. This happens through coordination between the hypothalamus and the various body systems that are affected.
what kind of energy is necessary to initiate the process of photosynthesis?
Answer:
Light energy.
What bird is known in North America that makes domes shaped nests and lives in the western part of it?
Answer: Cowbirds lay eggs in a great variety of nests, including Red-winged Blackbird nests in marshes, dome-shaped Ovenbird nests on the forest floor, cup nests in shrubs and treetops, and even occasionally in nests in tree cavities.
What happens to this enzyme when the pH rises above 12?
I'll give you brainliest if you answer correctly
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Compare the structures of viruses and cells.
Answer:
Cells have a double stranded DNA molecule and many strands of single stranded RNA as the copies. Viruses, however, can have double stranded DNA, single stranded DNA, double stranded RNA, or single stranded RNA. They convert RNA to DNA and then back to RNA to make proteins, which does not happen inside cells.
how do scientist test thier hypothesis
Answer:
By experimenting on the hypothesis using step by step scientific methods.
Gathering the data, analyzing the data, drawing conclusions and if the hypothesis isn't conclusive a new hypothesis will be formulated to check out the problem.
usefulness of earthworm
Answer:By their activity in the soil, earthworms offer many benefits: increased nutrient availability, better drainage, and a more stable soil structure, all of which help improve farm productivity. Worms feed on plant debris (dead roots, leaves, grasses, manure) and soil. ... Nitrogen in the casts is readily available to plants.
Explanation:
Earthworms have the ability to eat and mix large amount of soil and organic matter and deposit it in the form of casts. They also enhance incorporation and decomposition of organic matter, increase soil aggregate stability, improve porosity and water infiltration, and increase microbial activity.
which could take place by active transport A. the movement of carbon dioxide into a photosynthesising leaf B. the movement of carbon dioxide out of a respiring cell C. the movement of nitrate ions into a root hair cell D. the movement of oxygen into a respiring cell
Answer is C, Hope this helps!!
WHAT ARE THE IMPORTANCE OF TRANSPORT MECHANISMS IN CELLULAR PROCESSES?
Explain how the structure of an enzyme can affect its function.
Explanation:
i hope the answer will help you !
During respiration, oxygen will combine with haemoglobin to form a new substance. Write down the word equation for this reaction in the space below
Answer:
The overall (unbalanced) chemical equation for cellular respiration is: C6H12O6+O2→CO2+H2O+energy.
a species has 12 chromosomes in a cell. if this cell underwent mitosis, how many chromosomes would be in the daughter cell?
Answer:
the cell would split in two and put 12 chromosomes in each daughter cell
Explanation:
A person who is exercising vigorously breathes more deeply and rapidly than someone who is resting. Give TWO reasons why this is necessary.
During physical exercise, more oxygen is used up and more carbon dioxide is produced leading to faster and deeper breathing.
Physical exercise is a state in which the muscles are flexed much vigorously leading to a faster heartbeat owing to a quicker rate of pumping of the blood by the heart.
There are two main reasons why a person engaging in physical exercise tends to breathe faster and more deeply;
The muscles tend to work harder during physical exercise hence more carbon dioxide is produced.The body uses up oxygen more quickly leading to a greater demand for oxygen and thus a faster and heavier breathing rate results.Learn more about physical exercise: https://brainly.com/question/1080637
Which best describes an advantage of this type of reproduction?
А.
It allows for fast reproduction.
B
It introduces genetic variation.
с
It does not require any energy.
D
It prevents mutations from occurring.
how is anaerobic fermentation similar to aerobic respiration
Answer:
Anaerobic respiration begins the same way as aerobic respiration and fermentation.
Explanation:
However, instead of ending with glycolysis, as fermentation does, anaerobic respiration creates pyruvate and then continues on the same path as aerobic respiration.
how does cardiac muscle differ from skeletal muscle
Answer:
Cardiac muscle differs from skeletal muscle in that it exhibits rhythmic contractions and is not under voluntary control.
Type your response in the box.
Do you think one gene controls human hair color? Explain your answer.
Do you think one gene controls human hair color?
No, this is false. Not only one gene is responsible for the colour of your hair, at least 2 gene pairs control human hair colour. Therefore, this is wrong since each parent contributes multiple hair-colour genes .
Hope this helped you, have a good day bro cya)
Answer:
There are many different phenotypes for hair color among humans. Therefore, multiple genes control hair color.
Kim's Dalmatian, Tigger, always eats the same brand of food. Although he does everything else at lighting speed, he is a very slow eater. After watching a TV commercial touting the irresistible taste of Puppy Yums Dog Vittles, Kim decides to conduct an experiment comparing Tigger's regular food (K-9 Crunchy Bits), Puppy Yums Dog Vittles, and a store brand that cost 1/3 as much as the advertised food. Kim gave Tigger the same quantity of each different food, on three successive evenings, and used a stopwatch to determine Tigger's dinner-time munching speed.
Hypothesis:
Predicted Results:
Independent Variable:
Dependent Variable:
Control Variable:
The experiment was intended to show that the dog will eat the tastier food advertised on TV at a faster rate than it eats its regular food.
An experiment must have an independent variable and a dependent variable. The dependent variable is the variable that is being manipulated in the experiment. The responding variable is also called the dependent variable.
In this experiment;
The independent variable is the type of dog foodThe dependent variable is the eating time of the dogThe predicted result is that the dog will eat the advertised Puppy Yums Dog Vittles faster than the other dog foodsThe control variable is the quantity of dog food given to the dog each evening.The hypothesis of the experiment is that the dog will eat the advertised tasty food faster than it eats its regular food.Learn more: https://brainly.com/question/22824409
the _______ of light determines its color
Answer:
Wavelength
Explanation:
Answer:
1. The wavelength of light determines its color. 2. Chemicals that absorb light are called Pigments.
Explanation:
the hershey and chase blender experiment was designed to
Answer:
Hershey and chase sought to determine if the replicating piece of phages that entered bacteria during infection, the genetic parts, were solely DNA.
Explanation:
10 organisms that are found in underground habitals
GUYS PLEASE HELP I HAVE SCHOOL TOMORROW AND THIS IS THE LAST QUESTION BEFORE I GET TO GO TO A HAUNTED HOUSE XD.
When a cell uses a ____ channel to get large molecules across the cell membrane this is known as ___ diffusion.
That's all it gives me two answers please. *PLEASE HELP*
Answer:
I'm pretty sure the bottom one is faciliated diffusion. Try searching up your answer so sorry I couldn't help more, but I hope that does help you out a bit:)
34 Nutrients are made up of smaller basic units. Nutrients can be identified by food tests.
Which nutrient is a protein?
nutrient
smaller basic units
food test
A
amino acids
Benedict's test
B
amino acids
biuret test
C
sugars
Benedict's test
D
sugars
biuret test
Answer:
What is B amino acids
By biuret test
Explanation:
A Biuret is a compound formed by heating urea to 180° C. When biuret is treated with dilute copper sulfate in alkaline condition, a purple colored compound is formed. This is the basis of biuret test widely used for identification of proteins and amino acids.
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why do multicellular organisms have emergent properties
Answer:
They have more genes than unicellular organisms.
Explanation:
They show properties that can only result from the interaction of many cells.
Explain why a plant with a mitochondrial issue likely will not survive.
Mitochondria are cellular organelles that are in charge of oxidative phosphorylation, which is the critical process of turning nutrients into adenosine triphosphate (ATP) molecules that power normal cell operations. At least hundreds of mitochondria are found in each neuron. Because nerve cells are postmitotic, any mitochondrial damage received will accumulate over time and produce malfunction. Cells die as a result of widespread mitochondrial damage because they can no longer create adequate energy.
WHAT IS OSMOREGULATION
Answer:
Osmoregulation is the process by which an organism regulates the water and electrolytic balance in its body to maintain homeostasis.
Why is the fatty acid of the lipids often reffered to as a hydrocarbon chain?
Answer:
The chain includes hydrogen and carbon.
Explanation:
They all have a central carbon atom with four components around it.
Hope this helps!!