Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

term 3 sci > bio test jun 9 > Flashcards

bio test jun 9 Flashcards

1
Q

what are plants?

A

producers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

algae vs plants

A

algae live in water, are unicellular and have no roots, leaves, flowers

plants are multicellular and have roots, leaves flowers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

why are plants and algae called producers

A

they use energy from the sun to produce glucose, a type of sugar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

glucose is used to

A

help plants grow
absorb nutrients from soil

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

steps of photosynthesis

A
  1. water enters plant
  2. water travels up from roots to the stem to the leaves
  3. Co2 enters leaf cells
    4.CO2 and water enter chloroplast within leaves
    5.CO2 & water react in the presence of light and chlorophyll to give glucose and oxygen
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

word equation photosynthesis

A

sunlight
Carbon dioxide+water–> glucose+oxygen
chlorophyll

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

chemical equation photosynthesis

A

6CO2+6H2O–>C6H12O6+6O2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

chlorophyll

A

a green pigment found in palisade cells that absorbs sunlight

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

where does photosynthesis happen

A

chloroplasts in palisade cells in leaves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

diffusion

A

when substances move from high concentrated place to a low concentrated place

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

features of leaves + how it aids photosynthesis

A

Broad flat leaves: This gives a larger surface area to absorb as much light as possible

veins: transports water, minerals, sugar

Chloroplasts: contains chlorophyll to absorb sunlight

Waxy Layer: To stop water loss from leaf

Thin: Quick diffusion of gases like CO2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what is the leaf of a plant

A

an organ. its function is to photosynthesise.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

structure of a leaf

A

Waxy layer (cuticle)
Palisade layer (palisade cells)
spongy layer
stomata

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

palisade layer

A

cells containing lots of chloroplast with chlorophyll for absorbing sunlight for photosynthesis. the layer is closer to the sun near the top of the leaf

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

spongy mesophyll

A

air spaces allow gases to move and be exchanged

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

why would it be disadvantageous if a leaf was thick

A

because CO2 diffusion would not be as efficient

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

stomata

A

tiny holes found on the bottom surface of the leaf. Lets gases in lets water & oxygen out.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

how are minerals taken in

A

they are dissolved into water in the soil and are taken in by the roots

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

when do you say a plant is deficient

A

when a plant doesn’t have enough minerals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

nitrogen and magnesium

A

-nitrogen and magnesium help plants make chlorophyll –if deficient leaves turn yellow
-photosynthesis happens slower.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

phospherous

A

-found in every living plant cell
-used for energy transfer, photosynthesis
-acidic fruit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

potassium

A

-needed in cytoplasm of plant cell
-symptoms of deficiency: yellopw leaves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

what are minerals absorbed by

A

roots and root hair cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Respiration

A

process hat releases energy using glucose. it is a continuous process carried out by all living organism

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
aerobic respiration helps us
-contract our muscles to move -helps us build molecules so we grow -warms us up
26
aerobic respiration word equation
Oxygen+glucose--> Carbon dioxide+water+(energy)
27
Aerobic respiration (symbol equation)
O2+C6H12O6-->CO2+H2O
28
Where does Aerobic happen
The mitochondria. There are enzymes in them that are important for respiration
29
How is glucose transported
Dissolved in blood and travels around body
30
Anaerobic respiration purpose
When aerobic runs out , aerobic respiration can be used
31
Anaerobic respiration disadvantage
Anaerobic respiration is very inefficient.it produces much less energy.
32
Lactic acid
Lactic acid is the product of anaerobic respiration. It is a toxic acid that crystallises in the muscle and causes pain and fatigue.
33
Anaerobic chemical equation
Glucose-> lactic acid+(energy)
34
Where does anaerobic respiration happen
Cytoplasm
35
Why do muscle cells have a lot of mitochondria?
Because they carry out more aerobic respiration
36
Anaerobic respiration
Gives us energy ✨️faster✨️ that aerobic respiration not more energy
37
Anaerobic vs Aerobic
Anaerobic- -happens in chtoplasm -efficient-more energy produced -no oxygen Aerobic -Happens in mitochondria -inefficient -oxygen
38
Anaerobic respiration (fermentation) word equation
Glucose-> Carbon dioxide+Ethanol+(energy)
39
What role does carbon dioxide play in making of bread
Makes bread rise. Ethanol evaporates.
40
Oxygen debt
The oxygen that is necessary to break down lactic acid.
41
Somilarities aerobic and anaerobic
Produces energy In animals and plants Uses glucose
42
Yeast
Important fungus in food production Needed to make bread beer and wine
43
What does yeast do in the production of bread
Yeast uses up glucose and produces ethanol (this evaporates), carbondioxide (this makes bread rise) .
44
Food chain
Diagram that shows what an organism consumes. It shows the transfer of energy between organism.
45
Features of foodchains
Tertiary consumer: top carnivore Secondary consumer: carnivore Primary consumer: herbivore/omni Producer: producer
46
Do all food chains have three links?
Mostly three or four because as energy transfers along food chain some of the glucose is lost into surrounded. Which means at the end of the chain, there is going to be less glucose.
47
Food web
Set of food chains
48
Interdependence
When organisms are reliant on eachother for survival
49
Population
Number of plants or animals of the same type that live in the same area. The population size of one organism has a direct effect to another organism
50
Bioaccumulation
Harmful chemicals can accumulate in the body of an animal due to the tranfer of them throughout food chain
51
The decrease in producer population
Has a direct affect on every organism
52
Ecosystem
Name given to plants and animals in a particular location.
53
Community
The organisms inban ecosystem
54
Habitat
The area organisms live in
55
The ____ is a pond
Habitat
56
The _____ is the water plants, microorganism,fish
Habitat
57
The organisms in a community _____
Coexist
58
Niche
-a particular role it has or a place an organism lives in
59
Example of a niche
The hawk in an oak tree ecosystem can have its main purpose to scavenge and is in the leaf canopy area.
60
Guard cell
Opens stomata during day and closes it at night
61
Why can organisms coexist
Because they have different niches

term 3 sci (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions