Exam

Question 1

What did the first cells look like

Answer 1

Prokaryote

Question 2

Cyanobacteria- type of cell

Answer 2

Prokaryote

Question 3

Cyanobacteria - effect on atmosphere

Answer 3

Responsible for 50% of oxygen

Question 4

Cyanobacteria - what do they metabolise and create

Answer 4

Oxygen byproduct of photosynthesis

Created ozone

Question 5

What relationship do cyanobacteria have with eukaryotic cells

Answer 5

Absorbed cyanobacteria to form chloroplasts.

Question 6

What is special about stromatolites

Answer 6

Paleobiologists can see into the past

Question 7

What is a dinoflagellate

Answer 7

Bioluminessent

Cause toxic Red tises

Question 8

What is the redux boundary (sea)

Answer 8

Where oxygenic photosynthesis stops and anoxygenic starts.

Question 9

What happens at the endoplasmic reticulum

Answer 9

Protein production

Question 10

What do chloroplasts do

Answer 10

Trap light energy

Question 11

What do guard cells do (plant)

Answer 11

Alter fluid content

Question 12

steps of photosynthesis

Answer 12

1. light and water into chloroplasts
2. Co2 enters through stomata
3. Sugar leaves leaf as sucrose plus starch, fatty acid and amino acid.
4. calvin cycle.

ATP and NAPh goes in, nadp+ and Adp out.

Question 13

What enzyme used in Calvin cycle

Answer 13

Rubisco

Question 14

When was the cambria explosion

Answer 14

600m years

Question 15

What did all land plants evolve from

Answer 15

Green algea

Question 16

What do Land plants use as photosynthesis pigment

Answer 16

Chlorophyll a and b

Question 17

Plant adaptations to life on land

Answer 17

Waxy cuticles /water proof
Pigments protect from uv
Symbiotic with funghi

Question 18

What are non vascular plants

Answer 18

Simple plants
Eg. Moss
Just absorb stuff

Question 19

What is gynosperm

Answer 19

Seeds not covered
Needle leaves no flowers
Wind pollenated

Question 20

What are angiosperms

Answer 20

Flowering plants

Question 21

What is xylem

Answer 21

Where water flows from root to leaves

Question 22

What is thyklakoid

Answer 22

Where light dependent reactions take place

Question 23

What is granum

Answer 23

Stack of thykakloids

Question 24

What is stroma

Answer 24

Where calvin cycle takes place

Question 25

Xlyem vs phloem

Answer 25

Xylem one way transport, phloem two way

Question 26

How much of earth is arid

Answer 26

65%

Question 27

What is the common ancestor

Answer 27

Colonial flagellated protists

Question 28

What is radial symmetry

Answer 28

Limited movement eg star fish

Question 29

What is bilateral symmetry

Answer 29

Have front and back ends

Question 30

Diploblastic organisms example

Answer 30

Jellyfish, sponge, coral

Question 31

What is homeostasis

Answer 31

Maintaining a constant internal condition eg temp and fluid

Question 32

Arid environment percentage

Answer 32

33% of World land mass

Question 33

What can insects do to avoid oxygen toxixity and water loss

Answer 33

Stop breathing

Question 34

What is a caroted rete

Answer 34

Uses cool air from nose in mesh

All arid animals have one

Question 35

Are arid adaptive roominants capable of heterothermy

Answer 35

Yes

Question 36

What is autotrophic

Answer 36

Makes own energy

Question 37

What is homotrophic

Answer 37

Consumes for energy

Question 38

4 Land plant groups

Answer 38

Mosses/byophytes
Ferns
Conifers/gynosperms
Flowering plants / angiosperms

Question 39

Three methods for studying genetic basis of behaviour

Answer 39

Hybridisation
Artificial selection and cross breeding
Molecular analysis of genes