Q4 QUIZ 5 SLM 3

What does homeostasis refer to?

• • A constant state inside the body of an animal

• • An unstable state inside the body of an animal

• • A variable state inside the body of an animal

• • A state that never changes inside the body of an animal

Which of the following is NOT an example of internal conditions maintained homeostatically?

• • Blood glucose level

• • • Body temperature

• • Blood calcium level

• • Atmospheric pressure

What is the goal of homeostasis?

• • To maintain equilibrium around a specific value

• • To maintain constantly changing conditions

• • To create instability within the body

• • To ignore internal and external changes

What is the term used for a change in the internal or external environment that is detected by a receptor?

• • Reaction

• • Stimulus

• • Set point

• • Equilibrium

Which type of organisms use active or passive processes to match their internal osmolarity to that of the environment?

• • Osmoconformers

• • Osmoregulators

• • Mesophytes

• • Xerophytes

What is the primary organ responsible for regulating water in humans?

• • Liver

• • Stomach

• • Kidney

• • Heart

Which hormone controls the opening of water channels in the kidneys?

• • Insulin

• • Glucagon

• • Antidiuretic hormone (ADH)

• • Estrogen

How do hydrophytes absorb water?

• • Through stomata

• • Through contractile vacuoles

• • Across their entire surface

• • Through aquaporins

What is the process by which solvent molecules move through a semipermeable membrane into an area with a higher solute concentration?

• • Diffusion

• • Active transport

• • Osmosis

• • Endocytosis

What is the external pressure needed to prevent the solvent from crossing the membrane in osmosis called?

• • Hydrostatic pressure

• • Osmotic pressure

• • Turgor pressure

• • Atmospheric pressure