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Mrac [35]
3 years ago
8

How does the presence of permafrost affect tundra plant life?

Biology
2 answers:
11Alexandr11 [23.1K]3 years ago
7 0

Answer: C

It only allows shallow root growth, so large plants cannot grow as they normally would.

Anna007 [38]3 years ago
3 0
The answer is ; B
I hope I helped
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In a hardy-weinberg population with two alleles, a and a, that are in equilibrium, the frequency of the allele a is 0. 3. What i
zavuch27 [327]

Here, given-

homozygous alleles 'a' have a frequency of 0.3.

Also the alleles are in equilibrium in a Hardy-Weinberg population. The frequency of individuals that are homozygous for this allele are= 0.49.

The Hardy-Weinberg equilibrium can be defined as the principle which states that the variation in the genetic makeup of a population remains constant and unchanged till there are no external interferences, influencing the population.

Calculation-

p + q = 1\\0.3 + q= 1\\q= 1- 0.3\\\\q= 0.7

Then to find the frequency of the individuals homozygous for this allele the following formula needs to be used-

p^{2} + 2pq + q^{2} =1

p^{2} = dominant homozygous frequency\\2pq= heterozygous frequency\\q^{2} = recessive homozygous frequency\\

Thus, the individuals homozygous for the allele can be calculated by q^{2} = (0.7)^{2} \\= 0.49

Learn more about the Hardy-Weinberg equilibrium here-

brainly.com/question/16823644

#SPJ4

4 0
2 years ago
We breathe more quickly and deeply when we exercise. Why does this make sense? Select all that apply. a) Because when we exercis
storchak [24]

Answer:

a) Because when we exercise, we hydrolyze more ATP to ADP and Pi, and O2 is necessary for the hydrolysis, so we increase our intake of oxygen.

c) Because when we exercise, we produce more CO2 and increased ventilation is necessary to rid ourselves of CO2.

d) Because when we exercise, we use more ATP, and additional O2 is necessary to generate sufficient ATP.

Explanation:

During exercise , our body needs more energy in the form of ATP. This ATP comes from break down of food materials in the mitochondria of the cell during cellular respiration. With the addition of oxygen, more ATP is produced during respiration and this ATP is used by the body. With ATP, carbon dioxide is produced as a waste material which can be removed by exhaled out during breathing.

8 0
3 years ago
Are Sarcomeres made of amino acids?
nevsk [136]

Answer:

A titin mutation that occurs in muscular dystrophy with myositis (mdm) mice results in a predicted 83 amino acid deletion in the N2A and PEVK regions of the titin protein. Muscles from mdm mice are actively more compliant  possibly owing to the deletion in titin's I-band region. This suggests that modulation of titin stiffness in active sarcomeres by the proposed titin–thin filament interaction may be affected by the mdm mutation. The answer is YES I believe.

Explanation:

I believe the answer is yes from my deep reaserch. You may want to research in your texts book/lesson or courses and review what your teacher/professer has given you.

8 0
3 years ago
The covering of body surfaces and the lining of body cavities is composed of ________ tissue.
max2010maxim [7]
That is the Epithelial tissue
3 0
3 years ago
Deshaun is determining which sources are most appropriate for his research project. Which step of research process is he on? A.
guapka [62]

Answer:

3: Evaluate Your Sources D

Explanation:

Deshaun  is determining which sources are most appropriate for his research project. Here he can evaluate a variety of sources such as newspaper articles, magazines, journals, or books, and websites. So, it is important for him to make sure that he includes only authentic any valid information in his research.

So, he needs to evaluate his sources using several criteria like:

  • Accuracy
  • Scope / Relevance
  • Current/ up to Date
  • Objectivity
  • Reliability
  • Style
  • Functionality

Using these criteria he can evaluate his sources to choose the best and appropriate one for him.

Hope it help!

5 0
3 years ago
Read 2 more answers
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