SFSU BIO 230 COMPREHENSIVE STUDY GUIDE
2026 SOLVED QUESTIONS AND ANSWERS
GRADED A+
◉ How does the body maintain homeostasis? Answer: through
cooperation of multiple organ systems, including the endocrine and
nervous system
◉ What is a homeostatic set point? Answer: The level in where the
temperature of the body is maintained.
◉ Which organs are involved in water, and glucose balance? Answer:
The small intestine is involved with balancing water. The pancreas is
involved in balancing glucose.
◉ Where do different molecules enter your body? Answer: The Blood
Stream.
◉ How are they absorbed? Answer: osmosis
◉ How do they get to other regions of the body? Answer: Through the
blood stream
, ◉ What are capillaries? Answer: any of the fine branching blood vessels
that form a network between the arterioles and venules.
◉ What is interstitial space? Answer: space/fluid in BETWEEN cells
◉ How do different types of molecules (water, glucose, oxygen, sodium,
chloride) cross cell membranes and travel between different organs?
Answer: Cell membrane is semipermeable to water. Oxygen move
across cell membranes simple diffusion, a process that requires no
energy input and is driven by differences in concentration on either side
of the cell membrane. Food is broken up through digestion and diffuse
into the blood through microvilli in the intestinal wall.
◉ How is water regulated in your body? Answer: Homeostasis
◉ What is osmosis and what does it have to do with water balance?
Answer: The diffusion of water to create an equilibrium with salt.
◉ Where does the water in your body come from? Answer: Liquids,
foods and cellular respiration.
◉ How does your body eliminate water? Answer: Through urinating,
sweating, and feces.
2026 SOLVED QUESTIONS AND ANSWERS
GRADED A+
◉ How does the body maintain homeostasis? Answer: through
cooperation of multiple organ systems, including the endocrine and
nervous system
◉ What is a homeostatic set point? Answer: The level in where the
temperature of the body is maintained.
◉ Which organs are involved in water, and glucose balance? Answer:
The small intestine is involved with balancing water. The pancreas is
involved in balancing glucose.
◉ Where do different molecules enter your body? Answer: The Blood
Stream.
◉ How are they absorbed? Answer: osmosis
◉ How do they get to other regions of the body? Answer: Through the
blood stream
, ◉ What are capillaries? Answer: any of the fine branching blood vessels
that form a network between the arterioles and venules.
◉ What is interstitial space? Answer: space/fluid in BETWEEN cells
◉ How do different types of molecules (water, glucose, oxygen, sodium,
chloride) cross cell membranes and travel between different organs?
Answer: Cell membrane is semipermeable to water. Oxygen move
across cell membranes simple diffusion, a process that requires no
energy input and is driven by differences in concentration on either side
of the cell membrane. Food is broken up through digestion and diffuse
into the blood through microvilli in the intestinal wall.
◉ How is water regulated in your body? Answer: Homeostasis
◉ What is osmosis and what does it have to do with water balance?
Answer: The diffusion of water to create an equilibrium with salt.
◉ Where does the water in your body come from? Answer: Liquids,
foods and cellular respiration.
◉ How does your body eliminate water? Answer: Through urinating,
sweating, and feces.
