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Sergio039 [100]
3 years ago
11

8. Why is the active site specific for only one type of substrate?

Biology
1 answer:
Ksivusya [100]3 years ago
6 0
Why is the active site specific for only one type of substrate? Enzymes have a lock and key type fit so only a specific substrate fits in the activation site.
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The specialization of the pharyngeal jaws of cichlids for different diets represents a trade-off in function because ___________
Anestetic [448]

Answer:

The correct answer is -  the more specialized pharyngeal jaws are for one diet, the less adapted they are for the ingestion of other foods

Explanation:

Pharyngeal jaws are also called throat jaws and are specific for the prey. These jaws have strong muscles and plastic or easy-to-modify teeth. If an organism has pharyngeal jaws specialized for a specific diet or prey it will have lesser chances to adapted well according to the new diet. For instance, pharyngeal jaws highly specialized for scale eating will not be able to adapt well if the fish ingests algae.

6 0
3 years ago
As part of an experiment on circadian rhythms, a laboratory rat’s brain has been lesioned. The animal is now falling asleep and
Sergio039 [100]

Answer:the part of the brain that has most likely been damaged in this experiment is the suprachiasmatic nucleus (SCN) found in the hypothalamus of the brain.

Explanation:

circadian rhythms are behavioural changes that respond to light and darkness in an organisms environment. The sleep-inducing wake cycle is a good example of a circadian rhythm. In the experiment, the disruption of the mouse SCN led to development of imbalances in the circadian rhythm of sleep and wake cycle leading to falling asleep and waking up at random times of the day and night. I hope this helps. Thanks

3 0
3 years ago
Which of the following accurately describes nutrient limitation?
Studentka2010 [4]
When an ecosystem has a scarce nutrient, that is when there is a nutrient limitation.

So the answer is C. <span>Nitrogen is typically the limiting nutrient in freshwater environments.

This is because Nitrogen is the "scarce" nutrient </span>
6 0
3 years ago
Help me please- will mark brainliest
Sever21 [200]

Answer:

The scale is same.

Explanation:

The scale of nuclear fusion reaction on earth  is the same as compared to fusion reactions that is happening in the sun because both reactions produces the same product i. e. energy and heat etc and both are occurring naturally. Due to large size of the sun, huge number of nuclear fusion reactions occur ac compared to the earth which is smaller in size so the scale of both nuclear fusion reactions are the same but vary in numbers.

8 0
3 years ago
1. What happens to macromolecules from food during digestion?
NikAS [45]

Answer:

1. When you eat, you take in large molecules called "macromolecules" which make up building blocks that you can absorb into the bloodstream, and that your cells burn for energy.

2. Sugar molecules - Glucose, Amino Acids - Proteins, Fatty Acids - Fat

3 - 5 seems like answers you have to do yourself, but if you really need help just comment and I'll edit this!

Explanation:

5 0
3 years ago
Read 2 more answers
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