SA - 1 Prep

Question 1

What are 2 features of prokaryotes?

Answer 1

• unicellular

Question 2

What is the function of flagellum?

Answer 2

Move mucus

Question 3

How does vaccination help?

Answer 3

• Produces antibodies
• Makes the noddy immune

Question 4

What are the advantages of assexual reproduction?

Answer 4

• No mate
• Large production

Question 5

What are the disadvantages of assexual reproduction?

Answer 5

• No variation.
• Cannot survive in habitats.

Question 6

What are the advantages of sexual reproduction?

Answer 6

• Variation
• Will survive in habitats

Question 7

What are the disadvantages of sexual reproduction?

Answer 7

• One mate cannot increase population.

Question 8

Which part of the cell prevents turgor presssure?

Answer 8

Cell membrane

Question 9

Which part of the cell controls?

Answer 9

nucleus

Question 10

Which part of the cell does chemical reaction take place?

Answer 10

Ribosomes

Question 11

Define cells.

Answer 11

Single unit of life.

Question 12

Define tissues.

Answer 12

Multiple units of life.

Question 13

Define Transpiration.

Answer 13

• Removes excess water.
• Keeps leaf cool at optimum temp.

Question 14

Which organ does peristalsis take place?

Answer 14

oesophagus

Question 15

Which organ does protein digestion take place?

Answer 15

Stomach

Question 16

Which organ does insulin production take place?

Answer 16

Pancreas

Question 17

Which organ does partial digestion of bile take place?

Answer 17

Duodenum

Question 18

Which organ absorbs most water in?

Answer 18

Small intestine

Question 19

where is lipase secreted?

Answer 19

Pancreas

Question 20

Where is protease secreted?

Answer 20

Pancreas.

Question 21

Where is amylase secreted?

Answer 21

Salivary glands.

Question 22

Which hormone increases concentration of glucose?

Answer 22

Adrenaline

Question 23

What is emulsification?

Answer 23

• Mechanical process
• Breaks down large fat globules into smaller droplets.

Question 24

What happens to the seal wound in the skin and repair tissues? Name only the steps

Answer 24

1. Homeostasis
2. Inflammation
3. Tissue Repair
4. Angiogenesis
5. Remodelling

Question 25

What happens in Homeostasis?

Answer 25

- Blood vessel constrict - Platelets are forms a temporary plug.

Question 26

What happens in inflammation?

Answer 26

- WBC migrate to site of injury and help in tissue repair.

Question 27

What happens in tissue repair?

Answer 27

- Fibroblast produces collagen and protein that forms new tissues.

Question 28

What happens in angiogenesis?

Answer 28

- New blood vessel is formed - Angiogenesis form for cell growth.

Question 29

What happens in remodelling?

Answer 29

- Remodels new tissue and improves appearance.

Question 30

Why are enzymes essential for biological processes?

Answer 30

- Biological catalyst (Speed up reactions) - Highly specific (Designed to catalyze particular enzyme) - Regulated (Control how enzymes function) - Complex chemical transformations (Crucial for conserving energy in living organisms) - Used repeatedly - Maintain internal environment (Homeostasis) - Carry out various other sustaining processes. (Repair cellular structure.)

Question 31

What is the role of insulin?

Answer 31

Lowers blood glucose

Question 32

What is the role of glucagon?

Answer 32

Raises blood glucose.

Question 33

What is the regulation of blood glucose level of insulin and glucagon an example of?

Answer 33

Negative feedback loop

Question 34

What maintains the internal stability of internal conditions?

Answer 34

Negative feedback mechanism.