Weak Areas

Question 1

“High concentration of bicarbonate ions in the blood” do what?

Answer 1

Causes the air pressure/time ratio to be wider waves to skinnier waves

Question 2

What causes the pH of the blood to increase? 

Answer 2

Reduced hemoglobin is produced 

Question 3

Breathing is primarily regulated by the presence in the blood of the gas 

Answer 3

Carbon dioxide 

Question 4

If the hydrogen ion concentration in the blood increases the breathing control centre in the brain will…

Answer 4

Increase contractions of the diaphragm 

Question 5

Which reaction represents external respiration?

Answer 5

H+ + HCO3- —-> H2O + CO2
Hydrogen plus bicarbonate ion —-> water plus carbon dioxide

Question 6

What takes place during inhalation? 

Answer 6

Chest cavity pressure decreases 

Question 7

Too much of which gas is sensed by the brain and results in increased rate and depth of breathing?

Answer 7

Carbon dioxide 

Question 8

What form is most of the CO2 transported in the blood? 

Answer 8

Bicarbonate ion
Or
Carbonic acid 

Question 9

Air pressure is reduced inside the thoracic cavity when?

Answer 9

The rib cage moves up and out
(When inhaling)

Question 10

Air pressure in thoracic cavity increases when? 

Answer 10

We exhale 

Question 11

HbO2 —-> Hb + O2 represents a process which occurs in the:

Answer 11

Capillaries of muscle tissue 

Question 12

High concentrations of bicarbonate ion in the blood will result in:

Answer 12

Increased rate of breathing 

Question 13

The plural membranes function to:

Answer 13

Maintain negative pressure in the thoracic cavity 

Question 14

Under what conditions will oxygen be readily released from red blood cells? 

Answer 14

Warm and acidic 

Question 15

Oxygen diffusers from a capillary to a muscle cell during:

Answer 15

Internal respiration 

Question 16

Function of the cilia in the trachea is to:

Answer 16

Move mucus towards the glottis 

Question 17

What is absorbed into the lymphatic system from the small intestine?

Answer 17

Lipids

Question 18

Where is villi found?

Answer 18

Small intestine

Question 19

If sodium bicarbonate is not released as part of the pancreatic juice, the pH of the small intestine:

Answer 19

Will remain acidic

Question 20

What is a product of the liver?

Answer 20

Bile, urea, fibrinogen

Question 21

Blockage of the substances leaving the pancreas would affect:

Answer 21

The digestion of protein

Question 22

The gallbladder releases a substance after the ingestion

Answer 22

Fat

Question 23

What describes a DNA molecule?

Answer 23

Double chain of nucleotides joined by hydrogen bonds 

Question 24

A polypeptide found in the cytoplasm of a cell contains 12 amino acids. How many nucleotides would be required in the mRNA for this polypeptide to be translated?

Answer 24

12 amino acids. Each amino acid = 1 codon. Each codon = 3
12x3=36

Question 25

What does a homeostatic mechanism look like on a graph? Temp/time

Answer 25

A wiggly line in the middle

Question 26

What graph accurately describes the effect of pH on most enzymatic reactions? Enzymatic activity/pH

Answer 26

An upside parabola shape

Question 27

Example of denaturation?

Answer 27

Egg white forming a solid when heated

Question 28

The things sticking out of the cell membrane (chain of balls) does what?

Answer 28

Enable cellular recognition

Question 29

What moves material against a concentration gradient?

Answer 29

Active transport

Question 30

What aids movement of glucose across a cell membrane?

Answer 30

Protein

Question 31

Hypotonic?

Answer 31

When concentration of solutes in higher inside so water moves inside the cell

Question 32

Hypertonic

Answer 32

When concentration of solutes is higher outside so water moves outside

Question 33

Rate of diffusion in a system could be increased by

Answer 33

Increasing concentration gradient and decreasing molecule size