Mr. Ford's Video - Chap 1: What is Life?

Question 1

Irritability

Answer 1

• ability to respond to internal/external stimuli
• anything different to the organism
• must respond to stimuli or they will die
• eg: change in temp, pressure, sound, or change in chemical composition in their environment.

Question 2

Growth & Development

Answer 2

• growth: the process of getting bigger, size increase

- development: maturation process, getting older

Question 3

Reproduction

Answer 3

• asexual: cells replace dead & damaged cells, e.g. skin

- sexual: 2 cells from different organisms come together to create a new organism (share DNA)

Question 4

Movement

Answer 4

• internal: gas exchange, blood pumping, digestion, heart beating
• external: physical movement of the body

Question 5

Self-regulating Metabolism

Answer 5

• metabolism: the sum of all chemical reactions in the body, e.g., metabolizing food, creating hormones
• homeostasis: the body’s ability to stay neutral

Question 6

Ability to Adapt to the Environment

Answer 6

• all life is able to adapt to its environment (there is a range to which an organism can adapt)
• adaption can be structured, physiological, behavioral, or a combination of all these things.