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Viefleur [7K]
3 years ago
9

Why the lungs are considered part of the excretory system?

Biology
2 answers:
serg [7]3 years ago
8 0

Answer:

The Lungs. The lungs play a mandatory role in the excretory system. Your lungs remove the carbon dioxide built up in your blood using specialized cells known as alveoli. Your lungs process the molecules into gas and when you breathe, the gas is ejected from your body.

Explanation:

viva [34]3 years ago
5 0

Answer:

Because, by exhaling, they release (or excrete) the carbon dioxide that builds up in the blood, as a waste product of cellular respiration. It's a very important role, even if we often forget the lungs as part of the excretory system.

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you went on vacation and forgot to water your plants. when you returned the leaves were soft and wilted. Name an organelle that
soldi70 [24.7K]
The large central vacuole would become dehydrated, because without enough water stored in it, there wouldn't be any turgor pressure (water pushing against the cell wall) to support the cell, which causes the plant to wilt.
4 0
3 years ago
Need help with these asap
emmainna [20.7K]

I believe it goes in the following order top down

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3 years ago
The most important difference between primary cells and secondary cells is Select only the best answer: primary cells exhibit a
torisob [31]

Hi there! This question is a bit confusing.

Primary cells more of have one "star" quality; they are not rechargable. Think of them like a battery in a TV remote! You replace them, they can't recharge.

Secandary cells, though, can be electrically recharged! Like your phone battery, plug it in and a few hours later, full battery.

Your answer would be "Secondary cells are rechargable"

Have a great rest of your day!

4 0
3 years ago
Which are the three main types of lipids
maxonik [38]

Answer:

The three main types of lipids are - triglycerides, diglycerides, and steroids.

Explanation:

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An ester derived from glycerol and three fatty acids is a triglyceride. These are the main component of body fat in the vertebrates as well as the vegetable fat.

A Glyceride consisting of 2 fatty acid chains bonded to a glycerol molecule covalently through ester linkages is a diglyceride.

Biologically active organic compounds with four rings arranged in a specific molecular configuration are steroids.

4 0
3 years ago
Read 2 more answers
When DNA is compacted by histones into 10-nm and 30-nm fibers, the DNA is unable to interact with proteins required for gene exp
poizon [28]

Answer:

This is through the process of methylation and phosphorylation of histones tails.

Explanation:

The addition of   a methyl group  to the amino acid of the histones of the  nucleosomes   that compacted DNA  in the nucleus is  called mehtylation, while the addtion of phodpahte is phosphorylation

Its  effects  on  gene expression depends on the number of <u> methyl groups, and type of amino acid that  methylated. During transcription. </u>

<u />

The DNA double strands are compacted and therefore  hidden  from transcription factors and enzymes of transcription by the hitones  tails of the neuclosomes, Methylation  weaken the binding bonds between the tails and DNA structure ; thereby aiding the uncoiling of DNA  from the  tails.(nucleosomes).This chemical  reaction  aided  DNA  strands  exposure   to transcription factors and enzymes, for initiation of transcription. This explains the dyanmic activity of methylation

Futhermore phophorylation also favours unwrapping of DNA, by imitating   modifying enzymes e.g H3Y41E and H3T45E  and convert it to→→ H3Y41phopspahte to aid DNA unwrapping and accessibility to  transcription factors and RNA polymerase Enzymes,

5 0
3 years ago
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