B4 (biology) (book)

Question 1

What is the word equation for photosynthesis?

Answer 1

Carbon dioxide + water → glucose + oxygen

Question 2

How is water entered into the plant? (By what process)

Answer 2

From its roots , root hair cells by osmosis

Question 3

How does water get transported in a plant?

Answer 3

Water goes up a stem
Xylem through transpiration

Question 4

Where does carbon dioxide enter and leave the cell?

Answer 4

diffuses Through the stomata

Question 5

Which cell opens and closes the stomata?

Answer 5

Guard cells

Question 6

What is the acronym for the uses of glucose?

Answer 6

C
R
O
P
S

Question 7

What does CROPS stand for?

Answer 7

Cellulose - cell wall
Respiration
Oils + fats -nitrogen
Protein synthesis -(amino acid)
Starch

Question 8

What is limiting factor in photosynthesis?

Answer 8

A limiting factor is a condition, that when in shortage, slows down the rate of a reaction.

Question 9

What are the limiting factors for photosynthesis?

Answer 9

Light intensity
CO2 concentration
Chlorophyll
Temperature

Question 10

What is the independent variable for investigating a factor on the rate of photosynthesis?

Answer 10

Factor
light intensity

Question 11

What is the dependent variable for investigating a factor on the rate of photosynthesis?

Answer 11

The rate of photosynthesis

Question 12

How do you find out the rate of photosynthesis?

Answer 12

Count the bubbles in a given amount of time
Collect the oxygen produced in a gas syringe in a given time

Question 13

What are the control variables for investigating the rate of photosynthesis?

Answer 13

Keep the amount of time the same
Keep the other factors the same (same temperature , use LED lamp, it emits of less heat energy)
Species of plant
Mass of plant

Question 14

How do you change the light intensity?

Answer 14

Change the distance of the lamp

Question 15

What are organelles?

Answer 15

Part of a cell

Question 16

What is the word equation for aerobic respiration?

Answer 16

Glucose+oxygen →carbon dioxide+water

Question 17

What does aerobic mean?

Answer 17

With oxygen

Question 18

Where does respiration take place?

Answer 18

Mitochondria

Question 19

What is the point of respiration?

Answer 19

To release energy

Question 20

What is energy needed for?

Answer 20

Muscle contraction /movements
Growth
Keep warm
Active transport
Translocation

Question 21

What is the balanced symbol equation for aerobic respiration?

Answer 21

C 6 H 12 O 6 + 6 O 2 → 6 CO 2 + 6 H 2 O (energy, ATP)

Question 22

What is the word equation for anaerobic respiration?

Answer 22

Glucose →lactic acid (some energy)

Question 23

What is the word equation for anaerobic respiration in plants and fungi/fermentation?

Answer 23

Glucose → ethanol+carbon dioxide

Question 24

What is the balanced symbol equation for fermentation?

Answer 24

C6H12O6 →2C2H5OH+2CO2

Question 25

Why cant anaerobic respiration take place for a long period of time?

Answer 25

Lactic acid is toxic and can create pain and cramps in the muscle

Question 26

What does the body do to get rid of the lactic acid in the muscle?

Answer 26

Transfer the lactic acid into the liver and with oxygen it breaks down the lactic acid

Question 27

When does respiration take place?

Answer 27

All the time

Question 28

When does anaerobic respiration take place?

Answer 28

When there is a lack of oxygen in the cells

Question 29

How much energy is released during anaerobic respiration?

Answer 29

Little energy but it happens more quickly than aerobic respiration

Question 30

What are the changes to the body when exercising?

Answer 30

Heart rate increases (increase of blood flow,increase of oxygen+glucose,increase of respiration+energy released) Increase of rate of reaction Increase of breathe volume Sweat Temperature increase Vasodilation

Question 31

What is Vasodilation?

Answer 31

Vasodilation is the widening of your blood vessels.

Question 32

Why is heart rate still high after exercising?

Answer 32

After exercising heart rate is still high because we need to repay the oxygen debt and for the lactic acid in the muscle to transfer the lactic acid to the liver and with oxygen to break the lactic acid

Question 33

What are protein made out of?

Answer 33

Amino acid

Question 34

What is protein synthesis?

Answer 34

The making of protein

Question 35

What is the role of an enzyme?

Answer 35

Biological catalysts (To speed up the reactions)

Question 36

Define ‘metabolism”

Answer 36

The sum of all the chemical reactions that happen in an organism to change food into energy

Question 37

What is your metabolism regulated by?

Answer 37

Thyroid gland

Question 38

what does anaerobic mean?

Answer 38

Without oxygen

Question 39

Where does photosynthesis take place?

Answer 39

Chloroplast

Question 40

When does photosynthesis take place?

Answer 40

During the daylight hours