Biology Test Info

Question 1

What is a Eukaryotic cell.

Answer 1

A animal of plant cell with a nucleus that contains there genetic material.

Question 2

What is a a Prokaryotic cell.

Answer 2

A bacterial cell that does not have a nucleus

Question 3

Which ones bigger Prokaryotes or Eukaryotes?

Answer 3

Eukaryotes a way bigger than Prokaryotes

Question 4

What does the Prokaryotes cell have for DNA

Answer 4

A loop of DNA

Question 5

Does Prokaryotes cells have a cell wall or cell membrane?

Answer 5

They have both!

Question 6

Does Eukaryotic cells have cell wall or cell membrane

Answer 6

Cell membrane

Question 7

What does centi mean

Answer 7

100

Question 8

What does milli mean

Answer 8

1000

Question 9

1000 millimetres equals what?

Answer 9

1 metre

Question 10

What does micro mean

Answer 10

One million

Question 11

What does nano mean

Answer 11

One billion

Question 12

What is magnitude

Answer 12

Being 10x greater than each value

Question 13

What do you do when trying to find magnitude

Answer 13

Count the zeros at the end of the number eg 100 is 2x magnitude

Question 14

What is the function of a nucleus

Answer 14

To store genetic information /enclose the genetic

Question 15

What is the cytoplasm and what is its function

Answer 15

A watery solution were chemical reactions take place ,eg first stage of respiration

Question 16

What is a cell membrane and it’s function

Answer 16

Controls the molecules that enter and leave the cell

Question 17

What is the mitochondria?

Answer 17

Where aerobic respiration happens when energy is made through carbohydrates

Question 18

What are ribosomes

Answer 18

Site of protein synthesis

Question 19

What are plant cell shapes like

Answer 19

Regular and are packed full of green structures

Question 20

What are chloroplasts

Answer 20

Contains chlorophyll and is the site of photosynthesis

Question 21

What is a cell wall ?

Answer 21

Made from cellulose ,this strengthens the cell

Question 22

What is a permanent vacuole and what is its function ?

Answer 22

Filled with cell sap ,the cell sap in the vacuole gives the plant cell it’s shape

Question 23

What is a fact about animal cells

Answer 23

Most of them are specialised

Question 24

What does specialised mean

Answer 24

When cells are adapted which helps them carry out their particular function

Question 25

What does it mean when it’s specialised

Answer 25

When it because specialise scientists called it differentiation.

Question 26

What is the function of a sperm cell

Answer 26

To join with a ovum (egg)and fertilise it

Question 27

What is in a sperm cell

Answer 27

A long tail to allow them to swim to the ovum Enzymes which allow themselves to digest their way through the outer layer Packed full with mitochondria to provide the, with energy for swimming

Question 28

What is the job of a nerve cell

Answer 28

To send electrical impulses around the body

Question 29

What is job of the axon ?

Answer 29

To carry the electrical impulses from one body part to another part

Question 30

Job of myelin ?

Answer 30

It’s insulates the axon and speeds up the transmission of nerve impulses

Question 31

What is the function of synapses ?

Answer 31

End of the axon ,the junction that allows the impulse to one nerve cell to another

Question 32

What is dendrites?

Answer 32

Increase surface area so nerve cell can connect more easily

Question 33

What can muscle cells do ?

Answer 33

Contract (get shorter)

Question 34

What is a protein fibre

Answer 34

It can change the length in the muscle cell

Question 35

What else does muscle cells have to do?

Answer 35

Packed with mitochondria

Question 36

What is the job of mitochondria in muscle cells

Answer 36

Give the cell energy for muscle contraction

Question 37

What do muscle cells work together to do ?

Answer 37

Create muscle tissue

Question 38

What do hairs increase on a root?

Answer 38

Increase surface area so it can absorb water and dissolve minerals quicker

Question 39

What do root hair cells not contain ?

Answer 39

Chloroplasts because they are underground and chloroplasts have chlorophyll which is the site of photosynthesis which is impossible without sunlight

Question 40

Where is xylem cells found

Answer 40

Found in the stem of the plant

Question 41

What does xylem have and why

Answer 41

Xylem has thick walls this is because they contain lignin which helps support the wall

Question 42

Why does the xylem cells usually die

Answer 42

Because of the lignin

Question 43

What else do the xylem not have ?

Answer 43

They don’t have a nucleus a vacuole ,cytoplasm or chloroplasts

Question 44

What does a phloem cell transport

Answer 44

Transports sugars up and down the plant

Question 45

What does phloem vessels cells not have

Answer 45

A nucleus

Question 46

What is the companion cell does mitochondria provide

Answer 46

Energy to the phloem vessel cell

Question 47

One feature of a microscope

Answer 47

A stage ,it is where we place the microscope slide

Question 48

What does the stage have

Answer 48

Clips to hold the stage in place

Question 49

A lamp in a microscope

Answer 49

Light passes up through the microscope slide

Question 50

What is a stem cell

Answer 50

A undifferentiated cell which can give rise to any other cells of the same type and can differentiate to form other types of cells

Question 51

What is diffusion

Answer 51

It is the spreading out of particles resulting in net movement from an area of higher concentration to a area of lower concentration

Question 52

Net meaning

Answer 52

Overall

Question 53

The greater the concentration gradient the greater what?

Answer 53

The quicker diffusion is to take place

Question 54

The higher the temperature in diffusion the?

Answer 54

The greater the rate of diffusion

Question 55

Why is it that the temperature affect the rate of diffusion

Answer 55

The higher the temperature rate of kinetic energy which improves diffusion also means makes it quicker

Question 56

The larger the surface area the?

Answer 56

The greater rate of diffusion

Question 57

Osmosis

Answer 57

Osmosis is the diffusion of water from a dilute solution to a concentrated solution through a particularly permeable membrane

Question 58

Dilute solutions

Answer 58

Contain a high concentration of water

Question 59

Concentrated solution

Answer 59

Contain a low concentration of water

Question 60

What is a partially permeable membrane?

Answer 60

Allow some molecules to pass through, but not all molecules

Question 61

Osmosis

Answer 61

Simply the diffusion of water

Question 62

What does turgid mean?

Answer 62

Swollen

Question 63

Shrink

Answer 63

Flaccid

Question 64

Active transport

Answer 64

Active transport moves substances from a more dilute solution to a more concentration solution (against the concentration gradient)

Question 65

Active transport requires energy from what ?

Answer 65

Respiration

Question 66

Tissue

Answer 66

A tissue is a group of cells with a similar functions and structure

Question 67

Organ

Answer 67

A group of tissues working together for a specific function

Question 68

Organ systems

Answer 68

Organs are grouped into organ systems which work together to form organisms

Question 69

Food contains three main nutrients what are they

Answer 69

Carbohydrates ,proteins and lipids

Question 70

Food broken down into smaller molecules by what

Answer 70

Enzymes

Question 71

Chlorophyll absorbs what

Answer 71

Light energy

Question 72

Equation of photosynthesis

Answer 72

Carbon dioxide + water -> glucose + oxygen Light

Question 73

Chemical formula equation

Answer 73

C02+H20->C6H12O6+02

Question 74

We need energy for ?

Answer 74

For chemical reactions to build larger molecules

Question 75

Proteins are made from ?

Answer 75

Chemically joining amino acids

Question 76

Respiration is a what

Answer 76

Exothermic reaction because energy is being released

Question 77

Aerobic respiration

Answer 77

Glucose +oxygen -> carbon dioxide + water Energy

Question 78

Aerobic respiration chemical formula

Answer 78

C6H1206+02->C02+ H20

Question 79

Anaerobic respiration

Answer 79

Glucose ->lactic acid Energy

Question 80

Anaerobic respiration release more or less than aerobic respiration

Answer 80

Less because the oxidation of glucose is incomplete

Question 81

Anaerobic in yeast or plant cells

Answer 81

Glucose ->ethanol +carbon dioxide