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allsm [11]
3 years ago
10

Which functional area of the brain is responsible for keeping the cortex alert and conscious and enhancing its excitability?

Biology
1 answer:
LenKa [72]3 years ago
4 0

Answer:

The correct answer is b. reticular activating system.

Explanation:

The reticular activating system is located before the hypothalamus and mainly controls the activation of the awakening system and the day/night oscillations. Therefore, it's responsible for the consciousness states when sleeping.

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A collection of simula cells tht preform particular function are_____?
taurus [48]

Answer:

tissue

Explanation:

5 0
3 years ago
The pattern of embryonic development in which only the cells lacking yolk subsequently undergo cleavage is called ______. A. hol
andriy [413]

The pattern of embryonic development in which only the cells lacking yolk subsequently undergo cleavage is called meroblastic development, which is typical of birds.

Therefore, the correct answer is Option D.

<h3>What is embryonic cleavage?</h3>
  • Embryonic cleavage is the division of cells which occurs just after fertilization and are involved in the early development of the embryo.
  • The different cells formed after cleavage are called the blastomeres and these are present in a compact mass called the morula.
  • The end product of cleavage is blastula which is a hollow sphere with a cavity called blastocoel.
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  • In holoblastic cleavage, the entire egg divides as yolk is present in very less concentration.
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Learn more about cleavage here:

brainly.com/question/9962891

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7 0
2 years ago
Plant cells make their own food by taking in<br>​
aniked [119]

Answer: Sunlight.

Explanation: They use photosynthesis to absorb the sunlight.

5 0
3 years ago
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The pollination of a tomato flower by honeybees best illustrates
Lady_Fox [76]

Answer:

it best illustrates mutualism which is defined as a relationship that benefits two organisms, or it is defined as a doctrine in sociology where mutual aid is beneficial to society and the individual. An example of mutualism is pollination which is when bees take nectar from flowers and then deposit the nectar on another flower. I hope dis helps :3

4 0
3 years ago
PLEASE HELP BIG POINT
Novay_Z [31]

Answer:

a

Explanation:

There are two major differences between mitosis and meiosis. First, meiosis involves not one, but Two cell divisions. Second, meiosis leads to the production of germ cells, which are cells that give rise to gametes. Germ cells are different from somatic cells in a critical way. Whereas somatic cells are diploid, meaning they have two copies of each chromosome, germ cells are haploid. The haploid nature of germ cells is vital to the process of sexual reproduction.

4 0
3 years ago
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