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sweet [91]
4 years ago
11

What is true of the guard cells

Biology
2 answers:
Thepotemich [5.8K]4 years ago
7 0
These cells are hypotonic to their immediate surrounding
hichkok12 [17]4 years ago
5 0
What do you mean what is a true of the guard cells
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When examining rock layers, where do you find the oldest material? Why is this the case?
Basile [38]

Answer:

At the very bottom

Explanation:

When examining a cross section of rock layers, the oldest layer is on the bottom. This is because over time, newer rock layers continued to form on top of the oldest one.

5 0
3 years ago
Which of the following does NOT characterize proteins?
8090 [49]

Answer:

The answer is C) They appear to be the molecular carriers of coded hereditary information.

Explanation:

Why NOT C) They appear to be the molecular carriers of coded hereditary information?

This is the job of the nucleic acids. It is composed of nucleotides which are the basic units of DNA and RNA. They carry genetic information about a certain organism.

<h3 /><h3>True of proteins:</h3>

A) They may be denatured or coagulated by heat or acidity.

<u>Denaturation</u> is the <u>destruction of the protein's secondary and/or tertiary structures</u>. The <u>primary structure is not disrupted due to the tough peptide bonds</u> and can only be broken down by acid. For heat denaturation, hydrogen bonds are destroyed, as in cooking of egg whites and medical equipment sterilization.

B) They have both functional and structural roles in the body.

There are many kinds of proteins that have functional and structural roles like hormones <u>(FSH, LH)</u>, antibodies <u>(IgA, IgM),</u> enzymes <u>(lipase, amylase),</u> for storage/transport <u>(hemoglobin, ferritin)</u>, and locomotion <u>(actin, troponin).</u>

D) Their function depends on their three-dimensional shape.

Just like <u>hemoglobin</u>, it's <u>quaternary structure</u> can carry <u>4 molecules of iron</u> in one go. <u>Enzymes</u> are shaped accordingly to fit a<u> specific substrate</u> <em>(lock-and-key model)</em>

6 0
3 years ago
Which of the following is a producer?
Lerok [7]

Answer:

D

Explanation:

4 0
3 years ago
Read 2 more answers
15. Preservation focuses mainly on preserving resources so that they can be used by people a. True b. False​
Semenov [28]

Answer:

b. False​

Explanation:

Preservation stands for preserving or sustaining what already exists.  aimed at preserving natural resources in their original environment, free from human interference. It stands for securing an object from harm or decay while preserving its nature or state at the same time. Preservation of natural resources does not only benefit humans but also rejuvenates the wildlife and thus gave time for the Earth to breathe and regain its natural form.

3 0
3 years ago
Can we use a clinical thermometer to measure the temperature of hot milk? If not why not?
tatyana61 [14]
No, we can't. Typically, the measuring range of clinical thermometer is 97.7-99.5 degrees Fahrenheit. But the temperature of hot mile usually is far above this range.
4 0
3 years ago
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