You are attempting to document the structures of a newly discovered type of protein in your lab. you take them out of storage and allow them to heat up to 37 c. you notice 4 polypeptide chains, each coiled into a 3-d structure. what level of structure are the proteins in?
a. secondary
b. primary
c. quaternary
d. tertiary

D. Tertiary

Explanation:

Polypeptide chains with 3D structure represents tertiary structure of proteins. side chain interacts to form tertiary structure or the side chain interaction with the polypeptide backbone result in the formation of tertiary structure. Four weak forces contribute to make the tertiary structure stable. Hydrophobic interaction plays a key role in this structure, chain contains both resides; hydrophobic as well as hydrophilic too. More hydrophobic residues in the polypeptide chain of protein let the protein to be surrounded by more neighboring parts. Other forces include ionic bonds, hydrogen bonds, and Van der Waals forces, all these forces make interaction that impact in stability of protein structure.

Option A, secondary

Explanation:

The secondary structure of protein comprised of polypeptide chains folded into 3-D  structure. A secondary structure has two types of bond between the polypeptide units of protein -

a) alpha bond - H- bonding in the polypeptide chain that gives it a coiled spring shape

b) beta bond - H- bonding in the polypeptide chain that gives it a folded or pleated structure.

Hence, option A is correct

correct answer: biotic and abiotic limitations

carrying capacity is defined as the total number of an organism who can be supported in a given area within the natural resources limit and without harming or degrading the natural, economic or the cultural environment present for the future generations.

carrying capacity is determined by the limiting factors, which are known to affect the natural resources available. it may include water, nutrients, minerals, space, light etc.

explanation:

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