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Ulleksa [173]
4 years ago
12

What is one difference between a cell wall and a cell membrane?

Biology
1 answer:
vampirchik [111]4 years ago
8 0
A cell wall is fully permeable.
A cell membrane is partially permeable.
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A mutagenic process that alters the chromosome segment
kicyunya [14]

Answer:

This single nucleotide change alters only one amino acid in the protein chain

Explanation:

8 0
3 years ago
Read 2 more answers
Sketch what you observe when examining the onion root tip using the low power lens in the high-power lens. Label to sketches and
olga2289 [7]
Wait, you have to sketch this stuff? Then YOU need to sketch it. No offence, just no one is gonna sketch this for you. 
6 0
3 years ago
A plant breeder has determined the following variances for yield of corn in his fields:
Law Incorporation [45]

Answer:

A. VG = 80

B. Broad sense heritability = 0.80

C. Narrow sense heritability = 0.30

D. Average yield = 430 Units

Explanation:

A. Given that

VA = 30

VD = 50

VI = assumed not available

Therefore

Total genetic variance (VG) = VA + VD

= 30 + 50

= 80

VG = 80

B. Given that

VP = 100

VG = 80

Broad sense heritability, H2 = VG/VP

= 80/100

= 0.80

C. Given that

VA = 30

VP = 100

Narrow sense heritability, h2 = VA/VP

=30/100

= 0.30

D. The difference in selection = 500 - 400

= 100

Recall,

Selection response is heritability multiplied by selection differential.

That is

R = h2S

Selection differential = 100

Heritability h2 = 0.30

Selection response = 0.30 × 100

= 30units

Therefore, expected average yield = 400 + 30

= 430 Units

6 0
3 years ago
Which of the following is an example of a learned response? OA A child figures out how to ride a bicycle. O B. An adult salmon i
FromTheMoon [43]

Answer:

Explanation:

I would say A. Learning to ride a bicycle is a process of getting on and falling off. You have no idea how to do it properly without practice. That's learned.

But look out for D. I'm not sure that that isn't instinctive. Somewhere along the line I think even a baby knows not to let his/her eyes be touched. Is it learned? It's close but A is a much better answer.

The salmon is instinctive. The plant doesn't learn to turn towards the sun. It does so because more food is produced.

6 0
3 years ago
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Explain why the small piece of plant tissue is dipped in disinfectant when growing new plants from using cells from a parent pla
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Answer: Disinfectant is a chemical formulation which may include biological components used to reduce the population of a microbe from a living or dead surface.

Explanation:

The plant tissue is treated with a disinfectant before culturing it and growing new plants. This is done to remove dirt, dust, foreign particles like pollen, microbes from the plant tissue surface or from plant part. This help in growth of disease free and contamination free plants. The culture can be utilized for different cycles of plant growth as it remains free from any kind of contamination.

7 0
3 years ago
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