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timurjin [86]
2 years ago
9

Which of the following species of fish have cartilaginous skeletons?

Biology
1 answer:
kirza4 [7]2 years ago
5 0
What are the options?
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Steroid hormones and thyroid hormones ________ pass across the plasma membrane; they cause the target cells to ________ that pro
tekilochka [14]

Answer:

can ,synthesize specific proteins

Explanation:

Hormones are chemical signals secreted by animals and plant that are capable of regulating body activities and maintain homeostasis.

They are transported in the circulatory system of the body

The action of hormones can be seen after the hormone has bound to its specific receptor found inside the cell.

For instance, steroid hormone and the thyroid hormones can pass through the plasma membrane to their receptors inside the cells.

When they bind with their receptors, the target cells will synthesize specific proteins that produce the characteristic effect of the hormone.

6 0
3 years ago
i need help thinking of an idea for an enviormental science experiment. please help i need an idea by friday!!!!!!!!!
lara31 [8.8K]

Pollution is always a good way to go but you don't have to do air pollution you can do water pollution or both air and water pollution.

4 0
3 years ago
Select all of the characteristics of t lymphocytes, which are involved in specific immunity.
navik [9.2K]
The characteristics of T lymphocytes that are involved in specific immunity includes;
They mature in the thymus
They move freely among lymphoid tissues and connective tissues
They are responsible for cell mediated immunity. 
Specific immunity is a subsystem of immune system that is comprised of highly specialized, systemic cells and processes that prevent the growth of pathogens or eliminate them from the body. 
5 0
3 years ago
The diagram below shows a certain method of grazing animals
WITCHER [35]

Answer:

In agriculture, rotational grazing, as opposed to continuous grazing, describes many systems of pasturing, whereby livestock are moved to portions of the pasture, called paddocks, while the other portions rest.

Explanation:

hehe ....

5 0
2 years ago
Read 2 more answers
An Asian elephant has a weight of 52,900 newtons. This enormous weight is balanced on four feet. In a circus act, these elephant
Aleonysh [2.5K]

Answer:

Option B, 18.11 \frac{N}{cm^{2}}

Explanation:

Given-

The average surface area of one foot pad of an elephant is 2920 cm^{2}\\

Weight of an Asian elephant is 52900 newton

As we know, pressure is equal to total weight divided by total area of the surface on which it is concentrated.

Thus, pressure on one foot  pad of elephant is \frac{52900}{2920} \frac{N}{cm^{2}} \\

= 18.11\frac{N}{cm^{2}}

Hence, option B is correct answer

7 0
3 years ago
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