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prohojiy [21]
3 years ago
9

7. Explain why there is a difference in the amount of oxygen taken in at rest and during the vigorous activity, (2​

Biology
2 answers:
DochEvi [55]3 years ago
6 0

Answer:

Physical exercise leads to an increase in the arteriovenous oxygen difference in all individuals. As exercise intensities increase, the muscles increase the amount of oxygen they extract from the blood, and this therefore results in further increases in a-vO2 diff.

Explanation:

Ivanshal [37]3 years ago
5 0
Exercise intensities increase and the muscles increase the amount of oxygen they extract from the blood
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I have a simple question about external variables. If I'm doing an egg drop experiment, and my teacher "chucks" it off of the ro
julia-pushkina [17]

Ok, a few things here:

This is an egg drop experiment, so I'm assuming you are testing out different ways of protecting the egg.

The independent variable is what you want to change: This would be the type of protection you have on the egg

The dependent variable is what would be effected by the changes in the independent variable: which would be something like the integrity of the egg after it hits the ground. You'd have to measure that somehow.

There are two types of controlled variables: <em>Internal and External.</em>

Internal variables are within the scope of the experiment and can be controlled, whereas external variables are outside the scope of the experiment and we have no control over them.

Internal:

- Height of the drop

- Type of egg

- Person dropping

- How the egg is dropped

- Surface being dropped on to

External:

- The person designated to drop the egg is sick

- You run out of eggs to drop

- Somebody loses all the planning for the experiment

- The weather forces you to do the experiment inside versus outside

- The wind blows your egg off course, leading to it hitting the ground at an angle

So, the way your teacher "chucks" the eggs off the roof should be a controlled internal variable. The action should be done as consistently as possible to avoid an uncontrolled variable.

6 0
4 years ago
How do membrane proteins aid in transport?
Andrej [43]
The proteins may assist in the movement of substances by facilitated diffusion or active transport.
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4 years ago
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The failure, till now, to produce an effective AIDS vaccine may be due to the fact that the causative agent mutates continuously
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Answer: A. True.

Explanation:

The AIDS virus may constantly change it's form in the host body by mutating. The body immune system becomes unable to produce antibodies which can fight against these mutated cells.

Also, the vaccination used for the purpose of immunization will not be able to combat will the causative agent in the body of the host. As the vaccine contains the microbe which can fight against the virus present in the body. But as the virus is changing it's form the microbe may not be able to compete with the virus. Hence, the use of vaccine will become useless.

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3 years ago
My grades CLOSE tomorrow helpppppp
SOVA2 [1]

Answer:

Like mouse poison i guess PFFFT

Explanation:

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How do our full size organs compare to organelles inside cells?
Evgen [1.6K]

Answer:

The main difference between organ and organelle is that organ is a large part of an organism, composed of tissues which perform similar functions whereas organelle is a specialized structure found inside cells, which carries out a specific life process. Kidney, heart, liver, lungs, and brain are the organs in humans.

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