Question

In: Biology

1. Choose the best match. Each of the answer can only be used once! This type...

1. Choose the best match. Each of the answer can only be used once!

This type of bonds occurs both between fully charged group and between the partially charged groups on polar molecule.
  1. Hydrogen bonds

This type of bonds forms when two atoms come very close together to share one or more of their electrons.
  1. Covalent bonds

This type of bonds form when a hydrogen atom is â sandwichedâ between two electron-attracting atoms (usually oxygen or nitrogen).
  1. Hydrophobic forces

This type of bonds is a result of repulsion from the water.
  1. Electrostatic attractions

2. Organic polymers such as DNA and proteins are formed by:

  1. Hydrolysis reactions
  2. Dehydration synthesis reactions
  3. Decondensation reactions
  4. Hydrogen bonds

3. The peptide backbone of proteins is polar. So how can transmembrane proteins stay in membranes?

  1. The R groups in the transmembrane region are mostly hydrophobic, and they form a ring around the backbone in an alpha helix.
  2. The hydrophobic nature of the backbone allows it to exist in both polar and non-polar environment.
  3. The helical backbone is held together by covalent bonds, which make it sable.

Solutions

Expert Solution

Answer 1- This type of bonds occurs both between fully charged group and between the partially charged groups on polar molecule.= Electrostatic attractions

This type of bonds forms when two atoms come very close together to share one or more of their electrons.= Covalent bond

This type of bonds form when a hydrogen atom is â sandwichedâ between two electron-attracting atoms. = Hydrogen bond

This type of bonds is a result of repulsion from the water. = Hydrophobic forces

Answer 2- d) hydrogen bonds

Reason- Hydrogen bonds are present in organic polymers such as DNA (zipping together the DNA double helix) and in secondary structure of proteins (form between the backbone oxygens and amide hydrogens).

Answer 3- a) The R groups in the transmembrane region are mostly hydrophobic, and they form a ring around the backbone in an alpha helix.

Reason- The R-groups in transmembrane are hydrophobic in nature . When surrounded with water, it destabilize the protein molecule and make it insoluble in water.

gladiator answered 2 years ago
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