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Kitty [74]
3 years ago
11

What is a enzyme speeds up a chemical reaction by lowering the barrier?

Biology
1 answer:
Alik [6]3 years ago
3 0
Concept8.4:enzymes speed up metabolic reaction by lowering energy barriers
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The idea that Earth orbits the sun is referred to as ____ of the solar system, because of the scientist who first proposed it.​
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Answer:

Copernican Heliocentrism

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2 years ago
What do the rib muscles and diaphragm have in common?
Hatshy [7]

Answer:

Both are breathing muscles

Explanation:

When rib muscles and the diaphragm contract they increase the volume of the chest cavity, increasing the air pressure outside the body, causing air to rush into the lungs to fill the vacuum created by the increase in volume.

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2 years ago
I need this done quick guys thanks you
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5 0
3 years ago
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The graph shows the changing levels of hormones during menstruation and ovulation. What is the general trend for hormones after
Vladimir79 [104]

Answer:

Hormone levels generally decrease.

Explanation:

<em>The graph showed that hormone levels after ovulation generally decrease.</em>

The menstrual cycle of women generally have 3 phases which include:

  1. <em>The follicular phase</em>
  2. <em>The ovulatory phase</em>
  3. <em>The luteal phase</em>

The follicular phase is characterized by low levels of oestrogen and progesterone and a slightly high level of follicle stimulating hormone which ensures that follicles within the ovary develop.

The ovulatory phase is characterized by a surge in the luitenizing hormone (which stimulates the release of eggs) and follicle stimulating hormone with a decrease in the level of oestrogen and a gradual increase in the level of progesterone.

The luteal phase is characterized by a general decrease in the levels of luitenizing hormone and follicle stimulating hormone while oestrogen level may remain high.

5 0
2 years ago
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Proteins are made from long chains of molecules that can twist or fold. What are these chains called?
Greeley [361]
<span>The two factors that determine the shape of a protein </span><span><span>
1. </span> Primary structure. The sequence of amino acids. Amino acids are the building blocks of protein. It is a strong of linearity that can be thousands in length. Moreover, the formation of the amino acid and its system is influenced by its genes’ nucleotides arrangement.  </span> 
<span><span>2. </span>Hence the next factor is how is the structure of the amino acids bended and folded with itself that forms the certain protein molecule and forms the larger complex structure</span><span> </span>

8 0
2 years ago
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