1.1, 1.2 and 1.4

Question 1

Movement

Answer 1

an action by an organism or part of an organism causing a change in place or position.

Question 2

Respiration

Answer 2

chemical reactions in cells that breakdown nutrient molecules and release energy for metabolism.

Question 3

Sensitivity

Answer 3

the ability to detect or sense stimuli in the internal or external environment and to make appropriate responses.

Question 4

Growth

Answer 4

a permanent increase in size and dry mass by an increase in cell number or cell size or both.

Question 5

Reproduction

Answer 5

processes that make more of the same kind of organism.

Question 6

Excretion

Answer 6

the removal of waste products of metabolism, toxic materials and substances in excess of requirements.

Question 7

Nutrition

Answer 7

the taking in of materials for energy, growth and development; plants require light, carbon dioxide, ions and water; animals need organic compounds, ions and water.

Question 8

Why aren’t breathing and respiration the same?

Answer 8

breathing is a mechanical processes that takes in oxygen and removes carbon dioxide and respiration is a chemical processes that releases energy from food molecules for metabolism.

Question 9

Why aren’t defection and excretion the same?

Answer 9

defaces are undigested food substances and are not formed through metabolic processes.

Question 10

Organisms are classified into groups by the -

Answer 10

features they share.

Question 11

Species

Answer 11

a group of organisms that can reproduce to produce fertile offspring.

Question 12

Binomial System

Answer 12

an internationally agreed system in which the scientific name of an organism is made up to two parts showing the genus and species.

Question 13

Genera or Genus

Answer 13

closely related species.

Question 14

Species are the -

Answer 14

smallest natural group of organisms.

Question 15

Purpose of a Binomial System

Answer 15

Avoids confusion when identifying living organisms

Question 16

Why is it important to classify living organisms?

Answer 16

1 - Classifying living organisms helps us understand evolutionary relationships. this is because classification is based on studies of anatomy and morphology.

2 - Classification makes identifying living organisms easier.

Question 17

The sequences of DNA and amino acids in proteins are -

Answer 17

used as more accurate means of classifying living organisms than anatomy and morphology.

Question 18

Organisms who share a more recent ancestor have DNA base sequences that are -

Answer 18

more similar than those that share a distant ancestor.

Question 19

Each key is made up of -

Answer 19

a pair of contrasting features.

Question 20

Dichotomous means

Answer 20

two branches

Question 21

Dichotomous Key purpose -

Answer 21

simplifies the processes of identification