G10- Bio-Ch-12

Bio-Ch11-1What is homeostasis?

• a. The maintenance of internal conditions of the body at equilibrium
• b. The change in internal conditions of the body
• c. The response to external changes in the body

Bio-Ch11-2Why is stable internal conditions important for the efficient functioning of enzymes?

• a. Enzymes need a specific environment to work
• b. Enzymes do not function in stable internal conditions
• c. Stable internal conditions are not important for the efficient functioning of enzymes

Bio-Ch11-3Which process is responsible for maintaining the amounts of water and salts in body fluids?

• a. Osmosis
• b. Diffusion
• c. Osmoregulation

Bio-Ch11-4What is the optimum temperature for the enzymes of the body to work best?

• a. Any temperature
• b. Specific temperature
• c. Varying temperature

Bio-Ch11-5What is the process of eliminating metabolic waste from the body?

• a. Osmosis
• b. Diffusion
• c. Excretion

Bio-Ch11-6Which materials are included in metabolic waste?

• a. Any material
• b. Materials that may harm the body
• c. Only essential materials

Bio-Ch11-7What is the response of plants to environmental changes?

• a. Homeostasis
• b. Change in internal conditions
• c. No response

Bio-Ch11-8Which mechanism is responsible for the homeostasis of water and other chemicals in plants?

• a. Osmosis
• b. Diffusion
• c. Different mechanisms

Bio-Ch11-9What is the purpose of thermoregulation?

• a. To maintain internal body temperature
• b. To change internal body temperature
• c. To ignore internal body temperature

Bio-Ch11-10What is the effect of changes in body temperature on enzyme functioning?

• a. No effect
• b. Positive effect
• c. Negative effect