Human Biology Exam #1 Questions
and Answers
Osmosis - ANSWER-movement of water toward an area with Higher solute
concentration
Endocytosis and Exocyotisis - ANSWER-process that involves use of vesicles to
move substances in or out of a cell
Facilitated Diffusion - ANSWER-a cell needs to move a glucose (large,polar
molecule) across a membrane from high to low concentration
What is an accurate comparison of facilitated diffusion and active transport ? -
ANSWER-both processes use a transport channel to move substances across the
membrane
An animal cell is placed into a sucrose solution (sugar dissolves in water). the
concentration of sucrose in the cell and in the solution is shown. assume that this cell
does NOT have transport channels for sucrose, a larger polar molecule. what would
occur? - ANSWER-water would move out of the cell, causing it to shrivel
The function of NAD+ molecules in cell respiration is to - ANSWER-carry electrons
CAC citric acid cycle - ANSWER-produces and releases carbon dioxide
Involves the addition of a 2-carbon molecule to a 4-carbon molecule
Glycolysis, CAC and ETC - ANSWER-produces ATP for the cells use
ETC electron Transport Chain - ANSWER-passes electrons from one electron carrier
molecule in the membrane to the next several times, with a small amount of energy
released each time the electrons are passed
Involves use of the enzyme ATP synthase
Glycolysis - ANSWER-Results in production of 2 pyruvate molecules
ATP synthase is able to make ATP molecules by - ANSWER-using facilitated
diffusion of H+ down their concentration gradient
in DNA which of these bases could pair with A - ANSWER-T
The two individuals who correctly determined the structure of DNA molecules and
won the noble Prize for their work were - ANSWER-James watson and Francis Crick
Which of the following comparisons between the structure of DNA and RNA in NOT
correct? - ANSWER-DNA uses the base U but RNA uses the base T
What does NOT occur during the process of transcription - ANSWER-A ribosome
attaches to mRNA at the start codon
and Answers
Osmosis - ANSWER-movement of water toward an area with Higher solute
concentration
Endocytosis and Exocyotisis - ANSWER-process that involves use of vesicles to
move substances in or out of a cell
Facilitated Diffusion - ANSWER-a cell needs to move a glucose (large,polar
molecule) across a membrane from high to low concentration
What is an accurate comparison of facilitated diffusion and active transport ? -
ANSWER-both processes use a transport channel to move substances across the
membrane
An animal cell is placed into a sucrose solution (sugar dissolves in water). the
concentration of sucrose in the cell and in the solution is shown. assume that this cell
does NOT have transport channels for sucrose, a larger polar molecule. what would
occur? - ANSWER-water would move out of the cell, causing it to shrivel
The function of NAD+ molecules in cell respiration is to - ANSWER-carry electrons
CAC citric acid cycle - ANSWER-produces and releases carbon dioxide
Involves the addition of a 2-carbon molecule to a 4-carbon molecule
Glycolysis, CAC and ETC - ANSWER-produces ATP for the cells use
ETC electron Transport Chain - ANSWER-passes electrons from one electron carrier
molecule in the membrane to the next several times, with a small amount of energy
released each time the electrons are passed
Involves use of the enzyme ATP synthase
Glycolysis - ANSWER-Results in production of 2 pyruvate molecules
ATP synthase is able to make ATP molecules by - ANSWER-using facilitated
diffusion of H+ down their concentration gradient
in DNA which of these bases could pair with A - ANSWER-T
The two individuals who correctly determined the structure of DNA molecules and
won the noble Prize for their work were - ANSWER-James watson and Francis Crick
Which of the following comparisons between the structure of DNA and RNA in NOT
correct? - ANSWER-DNA uses the base U but RNA uses the base T
What does NOT occur during the process of transcription - ANSWER-A ribosome
attaches to mRNA at the start codon
