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pashok25 [27]
3 years ago
10

(03.02 MC)Human skeletal muscles can respire both aerobically and anaerobically. Which of the following best describes what happ

ens to pyruvate under anaerobic conditions?
Biology
1 answer:
Ymorist [56]3 years ago
8 0

Answer:

Under anaerobic condition pyruvate is converted into lactate.

Explanation:

Human muscles use both anaerobic and aerobic respiration for the production of ATP. During the starting of intense activity, the oxygen supply is not enough to provide instant energy to the muscle, therefore, muscles use anaerobic respiration to generate ATP.

During anaerobic respiration, muscle do not use oxygen to burn glucose. During anaerobic respiration in muscles, the glucose is converted into pyruvate and then this pyruvate gets convert into lactate and this process is called lactic acid fermentation. In this process, 2 ATP are produced.

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which of the following statements are true regarding active transport and facilitated diffusion (choose two answers) a) Active t
Vera_Pavlovna [14]

Answer: B and D

Explanation: We can break down why the correct answers are choices B and D by understanding why A and C are incorrect.

Option A states that active transport utilizes channel proteins, and facilitated diffusion utilizes carrier proteins. This is incorrect. Active transport involves carrier proteins, and facilitated diffusion involves channel proteins. Carrier proteins are different from channel proteins in that, while channel proteins can only facilitate the passive diffusion of ions into or out of the cell along their concentration gradient, carrier proteins can also use ATP to move ions in or out of the cell against their concentration gradient.

This brings us to why option C is also incorrect. Option C states that both processes require the input of energy in the form of ATP. While active transport requires the use of ATP to transport ions with or against their concentration gradient, facilitated diffusion does not. This is easily remembered when we consider that active transport is called *active* transport because the cell is *actively* using energy to transport ions.

Hope this helped.

7 0
3 years ago
Which of the following best defines a gene pool?
scZoUnD [109]

Answer:

A. The sum of all genetic traits in a population's individuals at a given time

Explanation:

.........

6 0
2 years ago
Read 2 more answers
List three questions about human honey guide symbiosis that could be answered with further research
Arte-miy333 [17]

Answer: 1. do honeyguides in different areas of the world have a similar symbiosis with humans?

2. how old are the birds when they learn to respond to the humans' calls?

3. could other birds in the region form a similar symbiosis with humans?

Explanation:

8 0
3 years ago
A driver traveling at a speed of 21 m/s tops a hill and spots a deer standing in the middle of the road 90 meters away. He hits
Iteru [2.4K]

Answer:

84m

Explanation:

Using the kinematics equation we can come up with the answer:

d=\dfrac{Vf+Vi}{2}\times t

Where:

Vf = final velocity

Vi = initial velocity

t = time

In your problem we have the following given:

Vf= 0 m/s

Vi = 21 m/s

t = 8 seconds

The Vf is zero because the car stopped. The distance given in this case is not useful in determining the car's distance so we will solve it. So just fill in the equation with the given:

d=\dfrac{Vf+Vi}{2}\times t\\\\d=\dfrac{0m/s+21m/s}{2}\times 8s\\\\d=10.5m/s\times 8s=84m

Thankfully, the deer was not hit!

8 0
3 years ago
When did the dinosaurs die?
Aleksandr-060686 [28]

Answer:

65 million years ago

Explanation:

At the end of the Cretaceous Period. Dinosaurs became extinct at the boundary between the Cretaceous and Paleogene eras, about 66 million years ago, at a time when there was worldwide environmental change resulting from the impact of a large celestial object with the Earth and/or from vast volcanic eruptions.

7 0
3 years ago
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