1st Test

Question 1

Bicarbonate ions are important because

Answer 1

they buffer the blood against pH swings

Question 2

The main organelle that contains enzymes to break down alcohol

Answer 2

peroxisomes

Question 3

cholesterol is not made from

Answer 3

steroid hormones

Question 4

These cells do not reproduce in people older than small children

Answer 4

cardiac muscle cells

Question 5

proteins that help with muscle movement

Answer 5

actin and myosin

Question 6

Negative feedback mechanisms control

Answer 6

blood sugar levels and body temp

Question 7

Turner’s syndrome is resulted from what chromosomal problem

Answer 7

XO

Question 8

Hooking glucose molecules together is which type of chemical reaction

Answer 8

synthesis

Question 9

What provides an identification pattern for immune system cells to check?

Answer 9

Glycocalyx

Question 10

Enzymes do what to the amount of activation energy

Answer 10

decrease

Question 11

enzymes decrease the activation energy needed by

Answer 11

stretching the bonds in the substrate

Question 12

For the birthing process you need?

Answer 12

brain or spinal cord, neurons to detect stretching, and smooth muscle to push

Question 13

a person’s mass is made up of 96% of elements except

Answer 13

calcium

Question 14

Uric acid crystals in the cytoplasm are called

Answer 14

inclusions

Question 15

lowest amount of hydrogen ions

Answer 15

bleach

Question 16

which cell types have cilia in humans

Answer 16

cells lining the respiratory tract

Question 17

what is the order (from smallest to largest) in parts of a body

Answer 17

subatomic particle, atom, molecule, organelle, cell, tissue, organ, organ system

Question 18

used by cells to pump sodium out of the cell and potassium into the cell

Answer 18

active transport

Question 19

the state of relative constancy in the body’s internal enviornment

Answer 19

homeostasis

Question 20

what can cause a protein to lose some of its secondary and tertiary structure making it lose its function

Answer 20

very high temp, blood pH getting too low or high

Question 21

corn oil can be made into margarine by breaking the carbon double bonds by

Answer 21

hydrogenating (adding hydrogen) it

Question 22

what radioisotope would be used to kill certain cancerous tumors

Answer 22

cobalt-60

Question 23

DNA replicated during which part of the cell cycle

Answer 23

S phase

Question 24

Atomic symbol “C” stands for

Answer 24

carbon

Question 25

the cells in the intestine can’t absorb enough nutrients because

Answer 25

microvilli are missing or deformed

Question 26

an organic molecule that acts as a cofactor

Answer 26

vitamin

Question 27

the ability for cells with the same genetic info to be able to differentiate into very different cells, both structurally and functionally, is due to

Answer 27

selective gene expression

Question 28

what type of bond is there between the oxygen atom and a hydrogen atom that connects two water molecules

Answer 28

hydrogen bond

Question 29

Adopted children from 3rd world countries can grow taller then their relative back home because

Answer 29

the diet in the U.S allows maximum growth based on height genes

Question 30

If someone studies the tissue of the heart as well its branching cells and intercalated disks, then they are studying

Answer 30

microscopic anatomy

Question 31

when DNA is duplicated, one strand is separated from the other strand by the enzyme

Answer 31

helicase

Question 32

how do you find out the number of neutrons in an atom if you have the mass number and the atomic number

Answer 32

you subtract the atomic number from the mass number

Question 33

which of the stages of mitosis occurs just before cytokineses and is when the chromosomes begin to uncoil

Answer 33

telophase