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pshichka [43]
3 years ago
9

The function of the eardrum in the middle ear is to

Biology
2 answers:
podryga [215]3 years ago
8 0
A.vibrates with the frequency of the received sound
Aliun [14]3 years ago
7 0
It's A , eardrum just vibrate with the sound and gives signal to the bones of the middle ear !

Pinna works as sound receiver !
So answer is A !
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Imagine an animal cell lost half of its mitochondria. Explain how the cell would be different.
seropon [69]

Answer:

Without mitochondria (singular, mitochondrion), higher animals would likely not exist because their cells would only be able to obtain energy from anaerobic respiration (in the absence of oxygen), a process much less efficient than aerobic respiration. ...

Explanation:

Mitochondria are rod-shaped organelles that can be considered the power generators of the cell, converting oxygen and nutrients into adenosine triphosphate (ATP). ATP is the chemical energy "currency" of the cell that powers the cell's metabolic activities. This process is called aerobic respiration and is the reason animals breathe oxygen. Without mitochondria (singular, mitochondrion), higher animals would likely not exist because their cells would only be able to obtain energy from anaerobic respiration (in the absence of oxygen), a process much less efficient than aerobic respiration. In fact, mitochondria enable cells to produce 15 times more ATP than they could otherwise, and complex animals, like humans, need large amounts of energy in order to survive.

mitochondrion is different from most other organelles because it has its own circular DNA (similar to the DNA of prokaryotes) and reproduces independently of the cell in which it is found; an apparent case of endosymbiosis. Scientists hypothesize that millions of years ago small, free-living prokaryotes were engulfed, but not consumed, by larger prokaryotes, perhaps because they were able to resist the digestive enzymes of the host organism. The two organisms developed a symbiotic relationship over time, the larger organism providing the smaller with ample nutrients and the smaller organism providing ATP molecules to the larger one. Eventually, according to this view, the larger organism developed into the eukaryotic cell and the smaller organism into the mitochondrion.

in most animal species, mitochondria appear to be primarily inherited through the maternal lineage, though some recent evidence suggests that in rare instances mitochondria may also be inherited via a paternal route. Typically, a sperm carries mitochondria in its tail as an energy source for its long journey to the egg. When the sperm attaches to the egg during fertilization, the tail falls off. Consequently, the only mitochondria the new organism usually gets are from the egg its mother provided. Therefore, unlike nuclear DNA, mitochondrial DNA doesn't get shuffled every generation, so it is presumed to change at a slower rate, which is useful for the study of human evolution. Mitochondrial DNA is also used in forensic science as a tool for identifying corpses or body parts, and has been implicated in a number of genetic diseases, such as Alzheimer's disease and diabetes.

i hope this is helpful

have a grest day!!:))

6 0
3 years ago
Many bacteria and fungi are important in the environment because they?
san4es73 [151]

Answer:Many bacteria and fungi are important in the environment because they return energy to the environment

Explanation:

6 0
3 years ago
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Warm water _____. a) is less dense than cold water b) is more dense than cold water c) has higher salinity than cold water d) ha
harina [27]

I would say its D :)

3 0
3 years ago
The central dogma of molecular biology states that DNA is _______ into mRNA, which is then translated into polypeptides.
Gnom [1K]
1. transcribed

2. cytoplasm

3. transfer RNA
3 0
3 years ago
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A ____ is a system that translates data from outside the nervous system into neural activity, thus giving the brain information
Kipish [7]

Answer;

- A sense

A sense is a system that translates data from outside the nervous system into neural activity, thus giving the brain information about the world.

Explanation;

-The sense or sensory nervous system is a part of the nervous system responsible for processing sensory information.

-A sensory system consists of sensory neurons, neural pathways, and parts of the brain involved in sensory perception. Commonly recognized sensory systems are those for vision, hearing, touch, taste, smell, and balance.

-Senses are transducers from the physical world to the realm of the mind where we interpret the information, creating our perception of the world around us.

6 0
3 years ago
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