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masya89 [10]
4 years ago
5

The blood-brain barrier is effective against ________.

Biology
1 answer:
harkovskaia [24]4 years ago
8 0
The blood-brain barrier is effective against the brain itself mostly because it, like a cell membrane, Controls what nutrients and other things that go into and out of the brain.
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__________ is the situation when one hormone exaggerates the effects of another hormone at the target cell?.
Naily [24]

A situation in which a hormone exaggerates the effects of another hormone at the target cell is called: synergism.

<h3>What is synergism?</h3>

Synergism can be defined as a biological process that typically occurs when two or more hormones produces the same effects of another hormone at the target cell and their combined effects are exaggerated.

Consequently, each of these hormone would act independently of another hormone while having the same effect on the target cell during the synergism of hormones.

Read more on hormones here: brainly.com/question/9474822

6 0
3 years ago
The first model of enzyme action was proposed in 1894 by Emil Fischer. In this model, the lock is the enzyme and the key is the
Andrews [41]

Answer:

The correct answer is "the induced fit model".

Explanation:

The first model that looked to explain the enzyme and substrate interaction was the "lock and key" model. Although this model helped scientists to understand the specificity nature of the interaction enzyme-substrate, it does not reflect reality since enzyme was portrayed as a lock with a structure that doesn't change during the catalysis. Then half century later "The induced-fit theory" was proposed which fits much better the newer version of the enzyme action model. In this theory the enzyme is partially flexible and its structure changes as a result of its interaction with the substrate.

5 0
3 years ago
PLEASE HELP!
levacccp [35]

Answer:

The scientific investigation is the systematic approach of the scientists to answer the questions about the world. It is applied almost all of the theories including the Theory of Natural Selection. Darwin's theory of evolution is a result of scientific investigation. In this theory, they investigate by observing the distribution of species.

7 0
3 years ago
Why do homologous chromosomes crossover during pro prophase l?
Reil [10]
Crossover occurs when two chromosomes, normally two homologous instances of the same chromosome, break and then reconnect but to the different end piece. If they break at the same place or locus in the sequence of base pairs, the result is an exchange of genes, called genetic recombination.
3 0
3 years ago
Which of the following processes take place in plant cells?
Tema [17]

Answer:

the answer is A. Cellular respiration only

hope this helps:)

8 0
3 years ago
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