Bio Quiz: Respiratory, pH, and buffers

Question 1

Buffer

Answer 1

• weak acids or bases that can resist sudden changes in pH and keep it close to neutral.

Question 2

Another picture to help understand buffers

Answer 2

Question 3

pH

Answer 3

a measure of how acidic or basic a solution is.

Question 4

regular pH level?

Answer 4

7

Question 5

if pH is higher than 7?

Answer 5

basic

Question 6

pH is lower than 7?

Answer 6

acidic

Question 7

logarithmic

Answer 7

as you move up or down the pH scale, the solution becomes 10X stronger or weaker.

Question 8

how does water contribute to the pH of a substance?

Answer 8

it dissociates into hydrogen and hydroxide ions.

Question 9

what type of ions are in acidic solutions?

Answer 9

higher concentration of H+ ions than OH- ions

Question 10

in basic solutions, which type of ions is at a higher concentration? (which does it have more of?)

Answer 10

there’s a higher concentration of OH- ions than there is H+ ions

Question 11

what is the equation when the solution is neutral?

Answer 11

H2O → H+ + OH- (H+= OH-)

Question 12

what is the ratio of ion types in neutral solutions?

Answer 12

it is equal. There is an equal amount of H+ ions and OH- ions.

Question 13

when will cellular reactions NOT occur?

Answer 13

when the cell is too acidic or too basic

Question 14

what do buffers help do?

Answer 14

buffers help prevent cellular reactions from NOT occuring. basically helps it happen when an acid or base is introduced

Question 15

ok this is sm help, this is my CER, so don’t copy me, but idk if we r supposed to know this. I’m just gonna add it cuz its the respiratory system and maintaining homeostasis and all that stuff. feel free to add ur CER

Answer 15

Changes in breathing and heart rate during exercise demonstrate our body maintaining homeostasis because heart rate controls the flow of blood, which is where oxygen and carbon dioxide are carried throughout the body.

Question 16

how does co2 and o2 help when excersizing? why do we need it to maintain homeostasis?

Answer 16

• cells need oxygen
• we inhale oxygen
• carbon dioxide is waste from cells
• we exhale carbon dioxide
• when we pick up out breathing rate, we also pick up our heart rate, so the two working at a fast pace is maintain homeostasis in itself
• we need a faster breathing rate when exercising because cells need oxygen more and faster because it helps in cellular respiration and cells creating more energy, which is what we need when exercising

Question 17

the path of air from the nose to the alveoli:

Answer 17

nose → pharynx → larynx → trachea → bronchi → lungs → alveoli → diaphragm

Question 18

function of Nose

Answer 18

warms, moistens, and filters air as it comes into the body

Question 19

the function of the Pharynx

Answer 19

passageway for air and food

Question 20

Larynx function

Answer 20

contains vocal cords that vibrate when air moves through them, which allows us to speak

Question 21

Trachea function

Answer 21

tube that connects the larynx and the bronchi or the lungs. It also brings air in and out of the lungs for respiration

Question 22

Bronchi function

Answer 22

deliver air to lungs, regulate air passageways by contractingBronchi function and relaxing

Question 23

Lungs

Answer 23

serves to protect the heart, provides a space for oxygen and carbon dioxide gas exchange

Question 24

Alveoli function

Answer 24

gas exchange happens here because they are touching the capillaries, oxygen diffuses through their walls into the red blood cells

Question 25

Diaphragm function

Answer 25

separates the heart and lungs from other things like the stomach and intestines, it moves the rib cage, which aids in breathing