Unit 2- Finals Review 2022

Question 1

What is the nucleus made up of?

Answer 1

Protons and Neotrons

Question 2

What is in the space around the nucleus?

Answer 2

Electrons

Question 3

How do enzymes affect reactions?

Answer 3

Catalyze / speed up

Question 4

What type of electron forms bonds?

Answer 4

Valence

Question 5

what is RNA made of?

Answer 5

nucleotides

Question 6

-saccaride means

Answer 6

carbohydrate (sugar)

Question 7

Function of proteins (list 3)

Answer 7

1. build tissues such as bone and muscle
   2.. control the rate of reactions and regulate cell processes
   3.. help to fight disease

Question 8

what does catalyze mean?

Answer 8

to speed up

Question 9

What is protein made of?

Answer 9

Amino acids

Question 10

Do all enzymes work inside cells?

Answer 10

no

Question 11

Which of the four macromolecules is the main source of energy for living things?

Answer 11

carbohydrates

Question 12

Ionic versus covalent bond

Answer 12

A covalent bond is when they share an electron and an ionic bond is when they donate an electron because they have different electronegativity

Question 13

What is the term used to describe the energy needed to get a reaction started?

Answer 13

D. activation energy

Question 14

What type of ion forms when an atom loses electrons?

Answer 14

positvive

Question 15

What type of ion forms when an atom gains electrons?

Answer 15

negative

Question 16

what is a valence electron?

Answer 16

it is in the outermost shell, and available to from bonds