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Harlamova29_29 [7]
3 years ago
8

There are two main types of chromosomal disorders, those that take place on the 21st pair of chromosomes and those that ________

______.
Biology
1 answer:
vampirchik [111]3 years ago
7 0

Down syndrome and Alzheimer's disease.

Down syndrome is a chromosomal disorder which is caused by the presence of extra copy of chromosome  21. Therefore also called as Trisomy 21.

Alzheimer's disease is a most common form of dementia(reduction in brain functioning). It is caused by mutation in single gene APP (Amyloid Precursor Protein) present on chromosomer 21.

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Large changes in temperature and acidity interfere with enzyme activity by _
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Answer: Denaturing

Explanation: Enzymes are made of amino acids that are linked by bonds, amongst those bonds are hydrogen bonds that are very weak. High temperatures and low pH(acidity) breaks those bonds changing the molecular conformation of the enzymes. That way they denature and loss the ability to perform their functions. High temperatures and acidity alter the structure of their active site preventing the substrate from binding to them. While high temperatures denatures enzymes, low temperature renders them inactive.

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3 years ago
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Although both the mitosis and meiosis begin with a diploid cell that contains replicated chromosomes, they also have distict cha
Alex73 [517]
Hello!

Meiosis occurs in humans, animals, plants and fungi, and its a sexual type of reproduction. The daughter cells are different, cause the chromosomes are mixed. Mitosis is a asexual type of reproduction and the daughter cells are identical.

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4 0
3 years ago
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what loop prepares the body for change. This is in contrast to a feedback loop that a. brings a parameter back into the set rang
11Alexandr11 [23.1K]

Answer:

The correct answer is - negative feedback loop.

Explanation:

A negative feedback loop takes place in the biology when the end product of a particular reaction leads to decrease in the reaction. A negative feedback loop makes system to bring the homeostasis.

Negative feedback loops takes place inside the body of an individual to decrease the function of a particular reaction, it prepared the body for the change that occur in the atmosphere such as pH, temperature and other.

Thus, the correct answer is - negative feedback loop.

5 0
3 years ago
Explain crop modifications in your own words.
fomenos
Crop modification is when the DNA of a plant is altered, commonly used to make them more desirable. For example, bananas weren’t always these long and seedless fruits but with crop modification, over time scientists were able to change the DNA of the banana we know today.
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