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finlep [7]
2 years ago
8

You are handed a model of a protein. It has a three-dimensional shape, and by twisting it, you can see that there is only one po

lypeptide chain in the model. You can see two alpha helices lined up next to one another in the model. From this evidence, you are looking at what level of protein structure? Tertiary T/F
Biology
1 answer:
Minchanka [31]2 years ago
8 0

Answer and Explanation:

1. Amino-acid sequence is the primary structure of a protein

2. Alpha helices, beta sheets and coiled coils refers to the protein folding and they represent the secondary structure of a protein

3. Protein ensemble formed by alpha helices, beta sheets and coiled coils represent the tertiary structure of a protein

4. Macromolecules with multiple polypeptides form globular or fibrous protein structures (quaternary structure)

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Artist 52 [7]

With ideal environmental factors, bacteria are able to reproduce at a very rapid pace.

<h3>Bacterial reproduction</h3>

Bacteria reproduce mainly by a single cell dividing into two, given the right condition. In order words, they reproduced by binary fission.

When environmental conditions are optimum, a typical bacterial cell can divide every 4 to 20 minutes depending on the species.

The time can become longer with sub-optimal environmental conditions.

More on bacterial reproduction can be found here: brainly.com/question/600239

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3 0
1 year ago
Which of the following domains include organisms that have a nucleus and
Olegator [25]

Answer:

The correct option is <em><u>B. Eukarya only</u></em>

Explanation:

Bacteria can be described as prokaryotic organisms that do not possess a nucleus. Their genetic material is generally present in the cytoplasm of the cell in a region called nucleoid. Some extra genetic material is found in them in the form of plasmids. Hence, option D is not correct.

The domain, Archae, contains prokaryotes and they lack a nucleus. Hence, option A and C are not correct.

Eukaryotes are multicellular organisms which contain a nucleus and other membrane-bound organelles. Hence, option B is correct.

5 0
3 years ago
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iVinArrow [24]

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

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✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

❖ The correct answer choice is B. DNA replication. DNA replication takes place in interphase during mitosis and meiosis.

~ ʜᴏᴘᴇ ᴛʜɪꜱ ʜᴇʟᴘꜱ! :) ♡

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8 0
3 years ago
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padilas [110]

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3 0
3 years ago
Consider the generalized cladogram of fish. A fossilized fish is found that has jaws but no true bones. Where does this fossil b
ollegr [7]
<h2>Answer:</h2>

A fossilized fish is found that has jaws but no true bones. This fossil belongs to D on the cladogram in the image attached.  

so, the correct option is D.

<h2>Explanation:</h2>

A cladogram is a diagram used to represent a hypothetical relationship between groups of animals, called a phylogeny. A cladogram is used by a scientist studying phylogenetic systematics to visualize the groups of organisms being compared, how they are related, and their most common ancestors.

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