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Nastasia [14]
2 years ago
7

Cells are usually very small. Why is it an advantage to have many small cells instead of one very large cell?

Biology
1 answer:
valentina_108 [34]2 years ago
4 0
With smaller cells, more surface area is available for oxygen and nutrients to diffuse in and carbon dioxide to diffuse out of the cell.
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In garden peas, long stems are dominant to short stems, and yellow seeds are dominants to green seeds, too long/yellow pea plant
Lera25 [3.4K]

Answer:

A) 300

B) 3:1

C) 9 long yellow : 3 long green : 3 short yellow : 1 short green

Explanation:

Long stems (L_) are dominant to short stems (ll)

Yellow seeds (Y_) are dominant to green seeds (yy)

We interbred pea plants with long stems and yellow seeds (L_Y_), but they had a short green parent (llyy) that could have only produced <em>ly</em> gametes, so our plants are heterozygous <em>LlYy</em>.

C) We interbred them LlYy x LlYy. If the two genes are unlinked, this is a typical dihybrid cross and from Mendel's law of independent assortment we know that the offspring will have the following phenotypic ratios:

  • 9/16 L_Y_ (Long, yellow)
  • 3/16 L_yy (Long, green)
  • 3/16 llY_ (short, yellow)
  • 1/16 llyy (short, green)

A) 3/16 × 1600 = 300 plants will be long and green.

B)

9/16 + 3/16 = 12/16= 3/4 plants will be yellow;

3/16 + 1/16 = 4/16= 1/4 plants will be green.

The ratio will be 3 yellow : 1 green

6 0
3 years ago
Why must the bonds of these molecules be broken before anything else happens?
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why must the bonds of these molecules be broken before anything else happens

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Which of the following are the major phagocytic cells in the body?a. T and B lymphcytesb. Eosinophisc. Erythrocytesd. Macrophage
kupik [55]

Answer:

The correct options are MACROPHAGES AND NEUTROPHILSE.

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Majority of the white blood cells in humans are specialized phagocytic cells, examples of these are macrophages, neutrophilse, monoctyes, mast cells and dendritic cells. The major functions of phagocytic cells is to protect the human body from disease pathogens. They do this by ingesting foreign bodies that are found in the body.  Macrophages and neutrophilse are the major phagocytic cells in the body, they are the principal effector of non-specific host defense and inflammation.

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Two frog populations (same species) living in two neighboring lakes sing slightly different courtship songs. increased irrigatio
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The best answers for this question would be:

 

 The songs will become more similar to each other.

 

<span>The frogs have most likely sync their songs with each other, since the female cannot determine the range of the song of the male frog given the environment that they are living in.</span>

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Which of the following hormones is directly
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adrenaline is the hormone which is directly controlled by nervous system

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