Final Exam

Question 1

Neuron

Answer 1

Transmits and recives electric signals main unit in nervous system

Question 2

Filtrate

Answer 2

The waste and excess filtrated out of blood to be peed out

Question 3

Filtration

Answer 3

The stages of removal of waste

Question 4

Resting potential

Answer 4

Body when no neurotrasmitiond are being made at -70mv

Question 5

Threshold potential

Answer 5

This is when we are in an all or nothiny response generating are max -40mv membrane becomes more positive

Question 6

Refractory period

Answer 6

Time in between electrical signals that other signals can’t be sent

Question 7

Synapse

Answer 7

Junction between a neuron and another cell like muscle cell

Question 8

Repolirization

Answer 8

K+ gates open and they rush out to make the membrane more negative again

Question 9

Hyperpolirization

Answer 9

Too much K+ leaves membrane making it too negative

Question 10

Returning to resting potential

Answer 10

The sodium potassium pump takes care of this

Question 11

Axon

Answer 11

Long extension of neuron that transmits electrical currents across our body

Question 12

Sympathetic system

Answer 12

Preparing for stress

Question 13

Parasympathetic system

Answer 13

Recovering from stress

Question 14

Photo systems

Answer 14

Capture light energy and turn it into chemical
Ps700 and ps680

Question 15

Thylakoid

Answer 15

Found in chloroplasts play a role in light dependent reactions as they form adp and atp

Question 16

Pigments

Answer 16

Chlorophyll absorb light and will reflect a different colour depending on the plant this is what makes plants green.

Question 17

Light reaction steps

Answer 17

Happens in the Thylakoid. Light will be absorbed. Water in the plant will get split keeping H in and releasing oxygen. ETC pumps H+ along the membrane causing a proton gradient and chemiosmosis uses the flow of protons to create atp and electrons will make NADPH

Question 18

Where does Calvin cycle occur

Answer 18

Happens in the chloroplasts

Question 19

What happens in the Calvin cycle

Answer 19

CO2 attaches to a enzyme called rubisco and from here many stages occur creating glucose.

Question 20

Things that affect the rate of photosynthesis

Answer 20

Heat, humidity, light intensity, oxygen /CO2 concentrations,

Question 21

What does co2 attach to in c3

Answer 21

Rubisco

Question 22

What does co2 attach to in C4

Answer 22

4 carbon molecule so it can be taken to rubisco to elevate co2 levels

Question 23

What does co2 attach to in cam plants

Answer 23

It gets turned into a organic acid that will release co2 when it is brought to the Calvin cycle.

Question 24

How does urinary system maintain Bp and PH

Answer 24

It maintains by making vasoconstrictors when BP needs to be elevated and it maintains ph by creating aldosterone to be used to reabsorb solutes

Question 25

What is a negative feedback loop

Answer 25

Our body counteracting what is being done to return it to à homeostatic state such as when we get too hot it makes us sweat

Question 26

What is a positve feedback loop

Answer 26

It enhances the stimulus like in childbirth the Child stimulates a hormone that helps with contractions and the feedback loop will enhance it to make more contractions