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Anarel [89]
3 years ago
6

The cell structures that break down nutrient molecules and old cell parts are known as

Biology
1 answer:
Arada [10]3 years ago
6 0

Answer:

LYSOSOMES are the cell structures that break down nutrient molecules and old cell parts

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What are the large indentations on the surface of the moon?
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Large indentions on the moon's surface, are known as craters.

Hope this helps!
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3 years ago
Renewable resources can be used without worry about consequences to the environment. Please select the best answer from the choi
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the answer is false the take trees for example their Renewable but where ruining out of them.

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3 years ago
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Which statement best distinguishes plant cells and animal cells
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Plant cells have a cell wall and cell membrane but animal cell have only a cell membrane.

6 0
2 years ago
A newborn baby dies soon after birth because her diaphragm and rib cage muscles failed to contract and she was unable to breathe
kozerog [31]

Answer:

Troponin

Explanation:

This is a complex of three proteins  (Trop C, I, T) that are responsible for muscle contraction of  the skeletal and cardiac  muscles . its binds with protein tropomysin  to lie in the grove between the actin filaments.  its prevents contraction by blocking  myosin crossbridge  in a relax muscles.Inorder to aid contractions  calcium ions binds with troponin, which leads to confrontational change.This exposes myosin on actin filaments,  leading to formation of crossbridge and therefore contraction of muscles.

Therefore if there is  a mutation in the gene that encoded Troponin, as explained above, calcium ion  will not be able to bind with tropinin, and there will be no exposure of myosin on actin filaments, no binding of  myosin on actin to cause crossbridge, and consequently no  muscle contraction,

Thus the intercoastal  muscle and diaphragm will not contract leading to death of the baby.

8 0
3 years ago
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Is hepatitis B the most common bloodborne pathogen?
IrinaK [193]

Answer:

No.

Explanation:

Hepatitis C is the most common bloodborne pathogen.

Hepatitis C as of 2022 has a infection rate of 3.7 million.

Hepatitis B as of 2022 has a infection rate of 2.2 million, or <em>1.5 million</em> lower than Hepatitis C.

Therefore, Hepatitis B is not the most common bloodborne pathogen.

Learn more about Hepatitis B, here:

brainly.com/question/6284143  - The three bloodborne pathogens healthcare workers in the US are most likely to be exposed to.

5 0
1 year ago
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