Chapter 2- Life Processes

Question 1

Name the five Structural levels

Answer 1

1. Cells
2. Tissue
3. Organs
4. System
5. Organism

Question 2

Define cells

Answer 2

Basic building blocks for all living things, they can be specialised to carry out different functions

Question 3

Define tissue

Answer 3

Formed when cells with similar specialisations carry out a common function

Question 4

Define organs

Answer 4

Formed when two or more tissues work together

Question 5

List the 7 life processes

Answer 5

1. Movement
2. Reproduction
3. Responsiveness
4. Feeding
5. Respiration
6. Excretion
7. Growth

Question 6

Define movement

Answer 6

Brought on by muscles. Most cells don’t move

Question 7

Define Reproduction

Answer 7

Humans reproduce by Sexual reproduction by a sperm and an egg

Question 8

Define Responsiveness

Answer 8

Sensitivity inside and out, keeping the body functioning normally

Question 9

Define feeding

Answer 9

There are three types
Ingestion- taking food and drink into by the mouth
Digestion- the breakdown of food
Absorption- digestion of food in the blood

Question 10

Define Respiration

Answer 10

Energy released from food.

Cellular respiration is the chemical reaction in cells

Question 11

Define Excretion

Answer 11

Removal of waste
Nitrogenous waste- toxic waste by the kidneys
Urine- hormones, drugs, salts and other chemicals by the kidneys

Question 12

Define growth

Answer 12

Increase in size (doesn’t occur evenly)

Development- gradual change of the body proportion