Lecture 2

Question 1

Gaining or losing a(n) _____ makes an isotope of the same element.

Answer 1

NEUTRON

Question 2

______ is the storage form of glucose for animals.

Answer 2

GLYCOGEN

Question 3

Amino acids are joined together via _______ bonds.

Answer 3

PEPTIDE

Question 4

The chemical shorthand -COOH represents a(n) _________ group.

Answer 4

CARBOXYL

Question 5

_________ is the primary source of steroids in the body

Answer 5

CHOLESTEROL

Question 6

If electrons are attracted more strongly to one atom than to the other, the molecule is said to be a _______ molecule.

Answer 6

POLAR

Question 7

A(n) __________ is a short chain of 2-9 amino acids.

Answer 7

OLIGOPEPTIDE

Question 8

The building blocks of nucleic acids are ________.

Answer 8

Nucleotides

Question 9

Glyceryl plus 2 fatty acids produces a disaccharide.

Answer 9

FALSE

Question 10

A negatively charged ion is called an anion

Answer 10

TRUE

Question 11

The number of protons and neutrons in a nucleus of an Atom constitutes the atomic number.

Answer 11

FALSE

Question 12

Alpha-he lives are secondary structures of a protein.

Answer 12

True

Question 13

Ionic bonds form when adjacent atoms share one or more pairs of electrons.

Answer 13

FALSE

Question 14

Triglycerides are hydrophilic molecules.

Answer 14

FALSE

Question 15

Hydrolysis is used to break bonds between biomolecules.

Answer 15

TRUE

Question 16

The bond between an oxygen and a hydrogen in a water molecule is a(n):

Answer 16

POLAR COVALENT BOND

Question 17

When nucleotide strands pair with each other, it is due to hydrogen bonding between _________.

Answer 17

NITROGENOUS BASES

Question 18

Each of the following is a function of proteins EXCEPT:

Answer 18

Storage of genetic information.

Question 19

Which of the following pairs are mismatched?

Answer 19

Galactose - Disaccharide

Question 20

Which of the following nucleotide bases in DNA can base pair with adenine?

Answer 20

Thymine