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Gelneren [198K]
3 years ago
11

Many living organisms respond to things in the environment called _____. life observations stimuli obstacles

Biology
1 answer:
Arada [10]3 years ago
8 0
Many living organisms respond to things in the environment called Stimuli.
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A scientist spends most of his time observing matter and learning about how it interacts. Which branch of science is he most lik
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What is the atomic number of carbon -14
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4 years ago
1. Why is the ability to perform lactic acid fermentation important to an animal cell when oxygen is scarce?
erastovalidia [21]

Answer:

Fermentation is important can keep obtaining energy from glycolysis.

Explanation:

In the presence of oxygen, cells will use aerobic respiration to obtain energy in the form of ATP. In these conditions, it can produce up to 36 ATP molecules.

This process has three steps: glycolysis, citric acid cycle and electron transport chain.

During glycolysis, a glucose molecule is broken down into two pyruvate molecules, releasing electrons that are taken up by NAD+ which is converted into NADH, and producing a net total of 2 ATP molecules. The NADH produced during glycolysis and the citric acid cycle will go to the mitochondria and give away the electrons to start the electron transport chain that has Oxygen as the last electrons acceptor, and the NAD+ used to continue glycolysis is regenerated in the process.

In anaerobic conditions (no oxygen), the last electron acceptor is scarce, so the NADH can't give away its electrons and the NAD+ cannot be regenerated, so glycolysis stops, eventually causing cell death due to lack of ATP. To avoid this, cells perform lactic acid fermentation, where the NADH gives the electrons to pyruvate which is then converted into lactic acid. This regenerates the NAD+ necessary to continue glycolysis and keep obtaining some energy to survive until oxygen levels increase.

3 0
3 years ago
2. The allele for webbed hands (W) is dominant to normal hands (w). Complete a Punnett square
Anna11 [10]
A. both parent would be Ww
b. see picture (for the top left it would be Ww not wW)
c. 2 Ww, 1 WW, 3 ww (i think i’m not sure how to do ratio)
d. 75%?
e. 25%

8 0
3 years ago
After finishing a psychology test, you try to relax by engaging in some meditation techniques. doing these exercises should incr
Tpy6a [65]
In doing these exercises, this is likely to increase the response of the parasympathetic nervous system in which results of making the heart slow and as well as the respiration rate with less muscular tension. The parasympathetic nervous system is the one responsible for conserving energy that makes the heart rate slower, increase the activity of the gland and intestinal activity and as well as relaxing the muscles.
6 0
3 years ago
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