Biology

Question 1

How many layers do bacteria cells have between the outside?

Answer 1

There are 3 layers

Question 2

What layers do bacteria cells have?

Answer 2

• Plasmid membrane
• Polysaccharide cell wall
• Slime capsule

Question 3

What is the role of chloroplasts?

Answer 3

• Makes food for the cell

- Site of photosynthesis

Question 4

What is the role of rough endoplasmic reticulum?

Answer 4

• Transports proteins within the cell

- Provides a large surface area for ribosomes

Question 5

What is the role of smooth endoplasmic reticulum?

Answer 5

• Synthesis of cholesterol
• Synthesis of lipids / phospholipids
• Synthesis of steroid hormones

Question 6

What is the role of golgi apparatus?

Answer 6

Modifies proteins by adding sugar molecules to make glycoproteins

Question 7

What is the function of ribosomes?

Answer 7

The site of protein synthesis

Question 8

What is the function of undulipodia?

Answer 8

Makes the spermatozoon move

Question 9

What is the function of cytoplasm?

Answer 9

A substance that holds other substances in place

Question 10

What is the function of mitochondria?

Answer 10

• Releases energy stored to carry out cells activities

- Site of ATP production during aerobic respiration

Question 11

What is the function of lysosome?

Answer 11

• Breaks down materials in the cell

- Keeps powerful hydrolytic enzymes separate from the rest of the cell.

Question 12

What is the function of vacuole?

Answer 12

Storage spaces for food + water

Question 13

What is the the equation for magnification

Answer 13

Magnification = Image / Real size

Question 13

What is the the equation for magnification

Answer 13

Magnification = Image / Real size

Question 14

How do you work out the real size in terms of magnification?

Answer 14

Real size = Image / Magnification

Question 15

How do you work out the real size in terms of magnification?

Answer 15

Real size = Image / Magnification

Question 16

What’s are the similarities between gram negative and gram positive bacteria?

Answer 16

• They both have an inner most plasma membrane

- They both have outer capsules

Question 17

What’s are the similarities between gram negative and gram positive bacteria?

Answer 17

• They both have an inner most plasma membrane

- They both have outer capsules

Question 18

What are the differences between gram negative and gram positive bacteria?

Answer 18

• Gram negative has an additional cell wall
• Gram negative has a thinner peptidoglycan cell wall whereas positive has a thick cell wall
• Gram positive is more easily treatable with antibiotics
• Gram negative loses its purple colour after a stain due to the thin cell wall
• Gram positive stains purple

Question 19

What are the properties of a prokaryotic cell?

Answer 19

• Single cellular organism
• Not membrane bound
• Extremely tiny
• Single circular chromosomes attached to cell wall

Question 20

Describe the properties of a eukaryotic cell.

Answer 20

• Single or multicellular
• Membrane bound
• Larger then prokaryotic but still very tiny
• Linear chromosomes in the nuclear floating in the centre of the cell

Question 21

Describe the structure of a bacteria cell.

Answer 21

• Slime capsule
• Flagella
• Plasmids
• Cell wall
• Cell membrane
• Cytoplasm
• Genetic material

Question 22

What are the components of a sensory neurone?

Answer 22

• Dendrites
• Cell body
• Mylein shealth
• Axon

Question 23

What are the components of a synaptic knob / bulb?

Answer 23

• Smooth endoplasmic reticulum
• Mitochondria
• Neurontransmitters
• Mylein shealth
• Axon
• Presynpatic membrane
• Calcium channels

Question 24

What are the components of a motor neurone?

Answer 24

• Cell body
• Nucleus
• Axon
• Dendrites
• Mylein shealth
• Nodes of raniver
• Synpatic terminals