A) Identify and describe the four levels of protein structure.

1 answer:

6 0

The four levels of protein structure are distinguished from one another by the degree of complexity in the polypeptide chain. A single protein molecule may contain one or more of the protein structure types: primary, secondary, tertiary, and quaternary structure. 1. Primary Structure: describes the unique order in which amino acids are linked together to form a protein.

2. Secondary Structure: refers to the coiling or folding of a polypeptide chain that gives the protein its 3-D shape. There are two types of secondary structures observed in proteins. One type is the alpha (α) helix structure. This structure resembles a coiled spring and is secured by hydrogen bonding in the polypeptide chain. The second type of secondary structure in proteins is the beta (β) pleated sheet. This structure appears to be folded or pleated and is held together by hydrogen bonding between polypeptide units of the folded chain that lie adjacent to one another

3. Tertiary Structure: refers to the comprehensive 3-D structure of the polypeptide chain of a protein.

4. Quaternary Structure: is the structure of a protein macromolecule formed by interactions between multiple polypeptide chains. Each polypeptide chain is referred to as a subunit. Proteins with quaternary structure may consist of more than one of the same type of protein subunit.

You might be interested in

Is oxygen necessary for the production of apt in your cells?

gizmo_the_mogwai [7]

Yes it is necessary for the production of apt in your cells because apt needs oxygen to form correctly.

7 0

2 years ago

Which two factors have likely influenced global temperatures the most?

Alex787 [66]

Answer:

B: volcanic activity

D: fossil fuel consumption

Explanation:

Fossil fuel consumption and volcanic activity are the two factors that has a great influenced on the global temperatures. Fossil fuel consumption is a human activity and volcanic activity both releases carbondioxide gas while burning. This carbondioxide gas is a greenhouse gas which block the reflected solar radiation and leads to increase in the surface temperature of the earth.

5 0

2 years ago

Which statement best describes the effect of the low density of frozen water in a lake

Arada [10]

Answer:

Explanation

Water in a lake freezes from the bottom up, killing most aquatic organisms. When water in a lake freezes, it floats, providing insulation for organisms below. ... If water were most dense as a solid, lakes would freeze from the bottom up, eventually freezing solid.

4 0

2 years ago

TRUE or FALSE Amoebas prey upon algae in aquatic environments.

IrinaK [193]

It is a completely false statement that amoebas prey upon algae in aquatic environments. The correct option among all the options that are given in the question is the second option. I hope that this is the answer that you were looking for and it has actually come to your desired help.

7 0

2 years ago

Read 2 more answers

Kaylee is making a poster to show changes that happen in nature during winter in northern

kari74 [83]

During the winter season, the tree branches get dormant.

Explanation:

As the winter season starts, many plants show very slower metabolism that is the growth of the plants become very slow.

During the winter, there is very low amount of sunlight that the plants receive and so the synthesis of chlorophyll by the plants also in very small amount, and so there is least amount of sugar to metabolize by means of a slower Photosynthesis.

These tree branches become dormant during winter season, and it is mostly covered with the scales.

3 0

2 years ago