Unit 1 Lesson 5

Question 1

Homeostasis

Answer 1

Is the maintenance of a constant internal state in a changing environment

The cell must:
Obtain and use energy
Make new cells
Exchange materials
Eliminate waste

Question 2

Photosynthesis

Answer 2

The process by which plants use sunlight, water, and carbon dioxide to make sugar and oxygen

Water + CO2 + sunlight ……………. Sugar + O2

Question 3

Cellular respiration

Answer 3

The process where cells use oxygen to produce energy from food

Sugar + O2. …………. Water + CO2 + energy

Question 4

Mitosis

Answer 4

The process of cell division that forms two new nuclei

Question 5

Passive transport

Answer 5

The movement of particles across a cell membrane without using energy

Question 6

Diffusion

Answer 6

The movement of molecules from high concentration to low concentration

Question 7

Osmosis

Answer 7

The diffusion of water through a semi-permeable membrane

Question 8

Active transport

Answer 8

The movement of particles across a cell membrane using energy . Particles go from low concentration to higher concentration

Question 9

Endocytosis

Answer 9

The process where a cell membrane surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell

Vesicles - sacs formed from pieces of the cell membrane

Question 10

Exocytosis

Answer 10

When particles are enclosed in a vesicle and released from the cell

Question 11

Transport Systems

Answer 11

Cardiovascular system - the main transport system in humans. Includes heart, blood vessels, blood

Xylem - tissue in plants that transports water and minerals

Phloem - tissue in plants that transports food made in plant cells