Atomic Basics & Enzymes Test

Question 1

What is the function of enzymes in biological system?

Accepted Answer

drive chemical reactions

Question 2

Biochemical substances in the human body are maintained at about neutral pH except for the --

Accepted Answer

stomach fluids

Question 3

antibodies are composed of amino acids, which macromolecule does it belong?

Accepted Answer

proteins

Question 4

What are the basic building blocks of all matter?

Accepted Answer

atoms

Question 5

what element is the most abundant in the human body?

Accepted Answer

oxygen

Question 6

Most cellular activities are processes regulated by the action of --

Accepted Answer

enzymes

Question 7

where are protons and neutrons located?

Accepted Answer

nucleus

Question 8

calcium has 20 protons and how many electrons?

Accepted Answer

20

Question 9

Can enzymes be reused over and over again?

Accepted Answer

Yes because they don't lose their functions

Question 10

what model does an enzyme and substrate make?

Accepted Answer

lock and key

Question 11

hydrogen, chlorine, and sodium are examples of _____________?

Accepted Answer

elements

Question 12

What is changed in an isotope?

Accepted Answer

# of neutrons

Question 13

what is the measure of how acidic or basic an organism is?

Accepted Answer

PH

Question 14

the second energy level of an atom holds how many electrons?

Accepted Answer

eight

Question 15

the first energy level of an atom holds how many electrons?

Accepted Answer

two

Question 16

the third energy level of an atom holds how many electrons?

Accepted Answer

eighteen

Question 17

why are enzymes specific?

Accepted Answer

all of the above

Question 18

atoms that form an ionic bond _________ or ____________ electrons?

Accepted Answer

gain or lose

Question 19

Which of the following will form a solution?

Accepted Answer

salt and water

Question 20

Which foods contain protein?

Accepted Answer

cottage cheese and yogurt

Question 21

Which macromolecule provides insulation, and helps animals to conserve heat?

Accepted Answer

Lipids

Question 22

Both lipids and carbohydrates are important in animal cells because both --

Accepted Answer

store energy

Question 23

What can cause an enzyme to activate or denature?

Accepted Answer

ph and temperature

Question 24

Which molecules store and transmit genetic information?

Accepted Answer

nucleic acids

Question 25

where are electrons located?

Accepted Answer

outershells around the nucleus

Question 26

what does an enzyme do?

Accepted Answer

speed up an enzyme

Atomic Basics & Enzymes Test

Questions 26

Atomic Basics & Enzymes Test

Questions 26