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andrezito [222]
3 years ago
9

Most of the mass of an atom is occupied by:​

Biology
1 answer:
crimeas [40]3 years ago
6 0

Answer:

Since the nucleus contains protons and neutrons, most of the mass of an atom is concentrated in its nucleus.

Explanation:

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An individual carries a heterozygote (two diff alleles on same gene) which will be located:
swat32

Answer:

B) On the same place on the same chromosome.

Explanation:

Both alleles are located on the same chromosome and present at the same place because genes come in pair. Each pair of gene is located at a specific place on a chromosome. If the two alleles present at a specific location are similar to each other, it is called homo-zygous while on the other hand, if both alleles are different from one another, they are considered as hetero-zygous.

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3 years ago
"cell structures is the permeability layer that lets only a selective number and type of molecules into the cell?"
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Answer: Cell membrane

Explanation:

The cell membrane has the ability to transfer the molecules from the exterior of the cell to the interior of the cell.

The cell membrane is semi permeable which means only selected molecules will pass through the cell membrane.

The molecules and substances that are synthesized inside the cell needs to be transported from inside to outside via cell membrane.

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3 years ago
A bear has an ___________ that is inside its body. Its skeleton is made of bone and cartilage, not of ____________ like a grassh
vova2212 [387]
From what I can tell, The answer is either A or B. Mammals have what is called an Endoskeleton, which means that their skeletons are inside their bodies. A way to remember this is Exo- is similar to exit and when you exit something then you are going outside. Endo- sounds like into, which can relate to being on the inside. Insects have Exoskeletons, which are made from Chitin. Now Agonists are also called Prime Mover muscles, which means they are practically the same thing.
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3 years ago
This pedigree chart tracks the inheritance of a recessive trait that is not sex-linked. Based on the information in the chart, w
Dmitry [639]
They are not sex linked. ...?
6 0
3 years ago
Which statement about positive feedback regulation is accurate?
GenaCL600 [577]

Answer:

Answer is B. Positive feedback regulation can generate an abrupt, all-or-none response in which the cell moves from ignoring a signal to responding to it very strongly.

Explanation:

Positive feedback can be described as an example of feedback, which is a natural mechanism that amplifies the action of a system.

It can be better be explained further, as a situation whereby the blood pressure decreases and the response of the body also makes or causes the blood pressure to decrease the more.

Other examples of a positive feedback also include blood clotting, ripening of fruits , uterus muscle contraction, resulting to the stretching of the uterus during pregnancy.

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