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julsineya [31]
3 years ago
5

What would be the physical sign that a bone cannot continue longitudinal growth?

Biology
1 answer:
faltersainse [42]3 years ago
8 0

Answer:

c) The presence of an ephiphyseal line

Explanation:

The options should be:

a) the presence of osteoblasts

b) the presence of osteons

c) The presence of an ephiphyseal line

d) the presence of hyaline cartilage on the ends of the bone

Explanation:

In vertebrates, the epiphyseal line is formed once the bone is completely grown. This occurs inside a plate known as the epiphyseal plate.

From the age of 18 to 21, the bone stops growing and the cartilage inside this plate gets replaced by bone. However, bones can keep growing in width until we are approximately 25 years old.

Therefore, the physical sign that indicates that a bone cannot continue longitudinal growth would be the presence of an ephiphyseal line.

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In a humoral or antibody-mediated immune response, specific B cells are stimulated by Helper T cells to help transform into plas
steposvetlana [31]

Answer:

An important feature that B-cells must have in order to become plasma cells and synthesize antibodies is increased rough endoplasmic reticulum in order to have the surface area needed for antibody production (option A).

Explanation:

The transformation of B cells into plasma cells to produce antibodies is a well known function of lymphocytes related to the immune response. This leads to a series of structural transformations in order to performs their function.

The rough endoplasmic reticulum (RER) has the function of contributing to protein synthesis, in conjunction with the ribosomes that are attached to it and the information of the mRNA.

<em>One of the changes experienced by B cells in their transition to plasma cells is the availability of larger RERs, in preparation for antibody synthesis, formed mostly by proteins</em>.

Learn more:

Plasma cells and humoral immune response brainly.com/question/1512036

5 0
3 years ago
Exobiologists have discovered under the surface of Mars an alien species of single-celled organisms, which undergo sexual reprod
Llana [10]

Answer:

The dominant phenotypes are Long flagella and one vacuole, and the recessive phenotypes are small flagella and two vacuoles.

Explanation:

As you can see in the attached table

1. For the size of the flagella we gave that:

- 241 organisms have long flagella

- 79 organisms have short flagella,

As there are more organisms with long flagella we can conclude that this is the dominant phenotype while the short flagella is the recessive phenotype.

2. For the number of vacuole we have:

- 247 organisms have one vacuole

- 73 organisms have two vacuole

As there are more organisms with one vacuole we can conclude that this is the dominant phenotype while having two vacuoles a is the recessive phenotype.

Then

Dominant phenotypes = Long flagella and one vacuole

Recessive phenotypes = Short flagella and two vacuoles

5 0
3 years ago
2. The diagram shows a sequence of bases in a strand
Gnom [1K]

Answer:

there is no diagram but

ACTTG-TGAAC

TGAAC-ACTTG

so a and b would be complimentary

4 0
3 years ago
After the sun dies what happens to Earth
kobusy [5.1K]
The moment sun will die planet Earth will leave it's orbit exactly 8 minutes and 42 seconds later.

And then will go on wondering forever in the cold surrounding of universe till it's not captured into another stellar system which seems to be a little hard to imagine.
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2 years ago
What two systems can combine to ensure the life activity of movement
Sidana [21]

A simple example is the connection between the circulatory and respiratory systems. As blood circulates through your body, it eventually needs fresh oxygen (O2) from the air. When the blood reaches the lungs, part of the respiratory system, the blood is re-oxygenated.

hope it is write i kind ask my friends

5 0
3 years ago
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