Answer Options:
a) hydrogen bonded
b) single covalent compounds.
c) double covalent compounds
d) ionic compounds
Answer: d) ionic compounds
Question: Which of the following is an example of a suspension?
Answer Options:
a) blood
b) salt water
c) rubbing alcohol
d) cytosol
Answer: a) blood
Question: Mitosis ________.
Answer Options:
a) is division of the genetic material within the nucleus
b) is the formation of sex cells
c) creates diversity in genetic potential
d) is always a part of the cell cycle
Answer: a) is division of the genetic material within the nucleus
Question: A chemical reaction in which bonds are broken is usually associated with ________.
Answer Options:
a) the release of energy
b) a synthesis
c) forming a larger molecule
d) the consumption of energy
Answer: a) the release of energy
Question: When DNA is replicated, it is necessary for the two strands to “unzip” temporarily. Choose which bonding type is most appropriate for holding the strands together in this way.
Answer Options:
a) ionic bonding
b) hydrogen bonding
c) non-polar covalent bonding
d) polar covalent bonding
Answer: b) hydrogen bonding
Question: Phospholipids make up most of the lipid part of the cell membrane. Since water exists on both the outside and inside of a cell, which of the following phospholipid arrangements makes the most sense?
Answer Options:
a) two back-to-back phospholipid layers with the polar heads facing out on both sides
b) two back-to-back phospholipid layers with the non-polar tails facing out on both sides
c) a single layer of phospholipids with the polar heads facing inside the cell
d) a single layer of phospholipids with the polar heads facing outside the cell
Answer: a) two back-to-back phospholipid layers with the polar heads facing out on both sides
Question: Place the following in correct sequence from simplest to most complex:
molecules
atoms
tissues
cells
organs
Answer Options:
a) 2-1-3-4-5
b) 1-2-3-4-5
c) 2-1-4-3-5
d) 1-2-4-3-5
Answer: c) 2-1-4-3-5
Question: Atom X has 17 protons. How many electrons are in its valence shell (outermost energy level)?
Answer Options:
a) 3
b) 10
c) 5
d) 7
Answer: d) 7
Question: If cells are placed in a hypertonic solution containing a solute to which the membrane is impermeable, what could happen?
Answer Options:
a) The cells will lose water and shrink.
b) The cells will show no change due to diffusion of both solute and solvent.
c) The cells will shrink at first, but will later reach equilibrium with the surrounding solution and return to their original condition.
d) The cells will swell and ultimately burst.
Answer: a) The cells will lose water and shrink.
Question: Which of the following is NOT considered a factor in influencing a reaction rate?
Answer Options:
a) particle size
b) concentration of reactants
c) temperature
d) time
Answer: d) time
Question: How many phosphates would AMP have attached to it?
Answer Options:
a) two
b) one
c) three
d) none
Answer: b) one
Question: If cells are placed in a hypertonic solution containing a solute to which the membrane is impermeable, what could happen?
Answer Options:
a) The cells will lose water and shrink.
b) The cells will show no change due to diffusion of both solute and solvent.
c) The cells will shrink at first, but will later reach equilibrium with the surrounding solution and return to their original condition.
d) The cells will swell and ultimately burst.
Answer: a) The cells will lose water and shrink.
Question: In which stage of mitosis do the identical sets of chromosomes uncoil and resume their chromatin form?
Answer Options:
a) anaphase
b) metaphase
c) telophase
d) prophase
Answer: c) telophase
Question: If cells are placed in a hypertonic solution containing a solute to which the membrane is impermeable, what could happen?
Answer Options:
a) The cell will lose water and shrink.
b) The cell will show no change due to filtration of both solute and solvent.
c) The cells will shrink at first, but will later reach equilibrium with the surrounding solution and return to their original condition.
Answer: a) The cell will lose water and shrink.