BIO 253 EXAM 1 2026 STUDY GUIDE SOLVED
QUESTIONS AND CORRECT ANSWERS
GRADED A+
◉ bacterial cell size compared to a virus.
Answer: Bigger than a virus
◉ What makes up a bacteria.
Answer: Cell wall
◉ Is gram positive thin or thick.
Answer: Thick
◉ Is gram-negative thin or thick.
Answer: Thin
◉ What color stain is gram-positive.
Answer: purple
◉ What color stain is gram-negative.
Answer: Pink
,◉ What makes the cell wall.
Answer: Pepidoglycan
◉ What makes up the virus.
Answer: The protein coat ( outside cover)
DNA or RNA
◉ What does ubiquitous mean?.
Answer: found everywhere (this is what makes bacteria are)
◉ types of passive transport.
Answer: diffusion, osmosis, facilitated diffusion
◉ What is the diffusion.
Answer: The movement of particles from an area of high
concentration to an area of low concentration.
◉ What is facilitated diffusion?.
Answer: The passive movement of a particle across a cell membrane
via a channel protein.
, ◉ What is osmosis.
Answer: diffusion of water across a selectively permeable membrane
◉ Active transport types.
Answer: endocytosis and exocytosis and active transport pump
◉ Active transport.
Answer: Low to high
◉ Endocytosis.
Answer: process by which a cell takes material into the cell
Pinocytosis
Phagocytosis
◉ What is hypotonic.
Answer: A solution with lower salt concentration than in the cells
(cells burst) MORE WATER THAN IN CELL
◉ What is a hypertonic solution?.
QUESTIONS AND CORRECT ANSWERS
GRADED A+
◉ bacterial cell size compared to a virus.
Answer: Bigger than a virus
◉ What makes up a bacteria.
Answer: Cell wall
◉ Is gram positive thin or thick.
Answer: Thick
◉ Is gram-negative thin or thick.
Answer: Thin
◉ What color stain is gram-positive.
Answer: purple
◉ What color stain is gram-negative.
Answer: Pink
,◉ What makes the cell wall.
Answer: Pepidoglycan
◉ What makes up the virus.
Answer: The protein coat ( outside cover)
DNA or RNA
◉ What does ubiquitous mean?.
Answer: found everywhere (this is what makes bacteria are)
◉ types of passive transport.
Answer: diffusion, osmosis, facilitated diffusion
◉ What is the diffusion.
Answer: The movement of particles from an area of high
concentration to an area of low concentration.
◉ What is facilitated diffusion?.
Answer: The passive movement of a particle across a cell membrane
via a channel protein.
, ◉ What is osmosis.
Answer: diffusion of water across a selectively permeable membrane
◉ Active transport types.
Answer: endocytosis and exocytosis and active transport pump
◉ Active transport.
Answer: Low to high
◉ Endocytosis.
Answer: process by which a cell takes material into the cell
Pinocytosis
Phagocytosis
◉ What is hypotonic.
Answer: A solution with lower salt concentration than in the cells
(cells burst) MORE WATER THAN IN CELL
◉ What is a hypertonic solution?.
