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SCIENCE GRADE 9 Q1 > PHOTOSYNTHESIS AND RESPIRATION > Flashcards

PHOTOSYNTHESIS AND RESPIRATION Flashcards

1
Q

is an organism that produces its own food

A

AUTOTROPH

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2
Q

is an organism that does not make its own food

A

HETEROTROPH

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3
Q
  • Is the process of converting sun’s energy into chemical energy in the form of sugar or
    carbohydrate.
  • Occurs in plants, some photosynthetic bacteria and algae.
A

PHOTOSYNTHESIS

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4
Q

where does photosynthesis take place?

A

CHLOROPLAST

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5
Q

an organelle containing the pigment chlorophyll that absorbs light

A

CHLOROPLAST

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6
Q

absorbs light

A

CHLOROPHYLL

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7
Q

carbon dioxide and water reacting with light energy to produce sugar and oxygen.

A

PHOTOSYNTHESIS

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8
Q

2 STAGES OF PHOTOSYNTHESIS

A
  1. LIGHT DEPENDENT REACTION
  2. LIGHT INDEPENDENT REACTION / CALVIN CYCLE
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9
Q

Is the process of breaking down complex molecules such as sugar to release energy in the form of ATP

  • It occurs in all living things
A

THE CELLULAR RESPIRATION

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10
Q

where does the cellular reproduction take place

A

MITOCHONDRIA

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11
Q

what does the cellular respiration produce in the form of ATP?

A

CARBON DIOXIDE, WATER, ENERGY

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12
Q

STAGES OF CELLULAR RESPIRATION

A
  1. GLYCOLYSIS
  2. PYRUVATE PROCESSSING/OXIDATION
  3. KREB’S CYCLE/CITRIC ACID CYCLE
  4. OXIDATIVE PHOSPHORYLATION/ ELECTRON TRANSPORT CHAIN
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13
Q

SUN’S ENERGY IS CONVERTED INTO SUGAR

A

PHOTOSYNTHESIS

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14
Q

is oxygen during photosynthesis and carbon dioxide during respiration.

A

THE PRIMARY GAS EXCHANGED

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15
Q
  1. What is the primary purpose of photosynthesis in plants?
A

TO PRODUCE GLUCOSE AS AN ENERGY SOURCE

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16
Q
  1. Which organelle in plant cells is responsible for photosynthesis?

a. Mitochondria

b. Nucleus

c. Ribosome

d. Chloroplasts

A

d. Chloroplasts

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17
Q
  1. During which process do plants take in carbon dioxide and release oxygen?

a. Photosynthesis

b. Respiration

c. Fermentation

d. Digestion

A

a. photosynthesis

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18
Q
  1. Why are photosynthesis and respiration considered interconnected processes in the ecosystem?

a. Photosynthesis produces glucose, which is consumed by respiration.

b. Photosynthesis and respiration both release carbon dioxide.

c. Photosynthesis and respiration occur in completely separate ecosystems.

d. Photosynthesis and respiration have no impact on each other.

A

a. Photosynthesis produces glucose, which is consumed by respiration.

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19
Q
  1. Which statement about photosynthesis is correct?

a. plants get the energy they need for photosynthesis from water

b. plants get the energy they need for photosynthesis from soil

c. plants get the energy they need for photosynthesis from sunlight

d. plants do not require energy to perform photosynthesis

A

c. plants get the energy they need for photosynthesis from sunlight

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20
Q
  1. What is the primary function of photosynthesis in plants?

a. Producing oxygen

b. Converting sunlight into heat

c. Producing glucose

d. Releasing carbon dioxide

A

c. producing glucose

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21
Q

It is the process of food production that happens in plants or autotrophs.

A

PHOTOSYNTHESIS

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22
Q

photo means

A

light

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23
Q

synthesis means -

A

put together

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24
Q

NADH means

A

nicotinamide adenine dinucleotide hydrogen

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25
FADH2 MEANS
Flavin adenine dinucleotide hydrogen
26
Main organ of photosynthesis in plants.
leaves
27
Tiny openings or pores in plant tissue that allow for gas exchange.
stomata
28
It contains the green pigment called Chlorophyll, which gives the plant its distinct color.
chloroplast
29
An organelle where photosynthesis takes place.
chloroplast
30
gives the plant its distinct color
chlorophyll
31
where does the carbon dioxide enter?
stomata
32
how is water absorbed?
through the root hairs from the soil
33
how is light energy absorbed?
light energy is absorbed by the chlorophyll
34
are other fundamental cellular components of photosynthesis. They are the molecules that impart colour and they absorb light at some specific wavelength and reflect back the unabsorbed light.
pigments
35
ATP MEANING
ADENOSINE TRIPHOSPHATE
36
ENERGY CURRENCY OF THE CELL
ADENOSINE TRIPHOSPHATE (ATP)
37
- requires photons from light - takes place in between thylakoids - uses light and water to produce oxygen and 2 energy carrying molecules
LIGHT-DEPENDENT REACTION OR LIGHT REACTION
38
All green plants mainly contain ______________, _______________ and ___________ which are present in the thylakoids of chloroplasts. It is primarily used to capture light energy.
CHLOROPHYLL A, CHLOROPHYLL B, CAROTENOIDS
39
IS THE MAIN PIGMENT
CHLOROPHYLL A
40
chain of events set in motion by the electrons
Electron transport chain
41
where does the ight dependent reaction occur?
granum (thylakoid membranes)
42
how many light absorbing molecules does the light dependent reaction have?
photosystem I and photosystem II
43
expected products of light dependent reactions are
oxygen, nadh, atp
44
- does not require light - takes place in the stroma - uses carbon dioxide and NADPH to produce carbohydrate or sugar:
Light independent reaction or dark reaction/Calvin Cycle
45
also called as dark reaction
light independent reaction
46
calvin cycle is named after?
melvin calvin
47
where does the dark reaction occur
stroma of the chloroplast
48
PHASES OF LIGHT INDEPENDENT REACTION
1. CARBON FIXATION 2. REDUCTION 3. REGENERATION
49
RuBP
RIBULOSE BIPHOSPHATE
50
PGA
PHOSPHOGLYCERATE
51
G3P
GLYCERATE 3-PHOSPHATE
52
used to regenerate RuBP
GLYCERATE 3-PHOSPHATE (G3P)
53
expected product of the dark reaction
glucose
54
light dependent reaction is also known as
photochemical reaction
55
T OR F  Increased light intensity results in a higher rate of photosynthesis. On the other hand, low light intensity results in a lower rate of photosynthesis.
TRUE
56
Factors that influence the rate of photosynthesis
LIGHT INTENSITY CONCENTRATION OF CO2 TEMPERATURE WATER
57
is essential for the existence of all life on earth. It serves a crucial role in the food chain – the plants create their food using this process, thereby, forming the primary producers.
photosynthesis
58
is also responsible for the production of oxygen – which is needed by most organisms for their survival.
photosynthesis
59
1. What is the primary source of energy for photosynthesis? a. Oxygen b. Carbon dioxide c. Sunlight d. Water
c. sunlight
60
2. Which organelle in plant cells is responsible for photosynthesis? a. Nucleus b. Mitochondria c. Chloroplasts d. Vacuole
c. chloroplasts
61
3. What is the primary product of photosynthesis? a. Carbon dioxide b. Oxygen c. Glucose d. Water
c. glucose
62
4. What is the role of chlorophyll in photosynthesis? a. Capturing light energy b. Producing oxygen c. Breaking down glucose d. Storing nutrients
a. capturing light energy
63
5. Why is photosynthesis essential for the ecosystem? a. It produces oxygen for animals. b. It removes carbon dioxide from the atmosphere. c. It converts sunlight into energy for plants. d. It produces food for all organisms.
d. It produces food for all organisms.
64
is the gelatinous liquid that fills the inside of a cell
cytoplasm
65
responsible for holding the components of the cell and protects them from damage
cytoplasm
66
is a process that all living things use to convert glucose into energy. Autotrophs (like plants) produce glucose during photosynthesis. Heterotrophs (like humans) ingest other living things to obtain glucose
cellular respiration
67
to break down glucose to form energy.
cellular respiration
68
produces energy, which is vital because the energy is used to maintain life. 
cellular respiration
69
STAGES OF CELLULAR RESPIRATION
GLYCOLYSIS PYRUVATE OXIDATION KREB'S CYCLE ELECTRON TRANSPORTATION / OXIDATIVE PHOSPHORYLATION
70
no presence of oxygen
anaerobic
71
has presence of oxygen aerobic
72
 is the first step in the breakdown of glucose to extract energy for cellular metabolism
glycolysis
73
glyco means
glucose
74
lysis means
to split
75
the innermost compartment of mitochondria
mitochondrial matrix
76
Coenzyme A is also known as
acetyl CoA
77
2 SUBSTAGES OF OP
(ETC) ELECTRON TRANSPORT CHAIN CHEMIOSMOSIS
78
is a collection of proteins bound to the inner mitochondrial membrane and organic molecules, which electrons pass through in a series of redox reactions, and release energy.
ETC – ELECTRON TRANSPORT CHAIN
79
is the process through which cells produce ATP for energy in the cellular respiration process.
CHEMIOSMOSIS
80

SCIENCE GRADE 9 Q1 (10 decks)

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