Biology Crack
Midterm Exam Edition
Section 1: Lab Skills
In an experiment, 1 yeast culture was grown at 15°C, 1
yeast culture was grown at 22°C, and a last yeast culture
was grown at 30°C. The volume of gas the yeast culture
produced was measured at 48 hours to give the growth
rate of the yeast cultures. The different temperatures
represent:
a) the experimental control
b) the dependent variable
c) the independent variable
d) none of the above
Section 1: Lab Skills
In biology, there are many possible sources of
error in our experimentation. One of these
sources is:
a) error in measurements
b) inaccuracy of our technology
c) fooling around in lab
d) all of these are possible sources of error
Section 1: Lab Skills
If a hypothesis is not supported, a researcher
should
a) change the data.
b) change the results.
c) form a new hypothesis.
d) retest the hypothesis until it checks out.
Section 1: Lab Skills
In an experiment where the amount of enzyme
is varied and the rate of reaction is measured:
a) rate of reaction is the independent
variable.
b) rate of reaction is the dependent
variable.
c) amount of enzyme is the dependent
variable.
d) amount of enzyme is the control.
Section 1: Lab Skills
A student added a chemical from Penicillium mold
to one group of bacteria but not to another group
of the same bacteria. The bacteria to which NO
Penicillium was added was the
a) control group.
b) experimental group.
c) neither the control nor the experimental
group.
d) both the control and the experimental
group
Section 1: Lab Skills
A scientist wants to test the hypothesis that an increase in the amount
of carbon dioxide increases the rate of photosynthesis. She sets up a
controlled experiment with two groups of the same type of plants.
How much CO2 should each group be exposed to?
a) both groups should be exposed to the same amount of
carbon dioxide.
b) neither group should be exposed to carbon dioxide.
c) one group should be exposed to the normal amount of
carbon dioxide, and the other group should be exposed to a
higher than normal amount of carbon dioxide.
d) one group should be exposed to carbon dioxide and the
other group to a different kind of gas.
Section 2. Chemistry Review
When valence electrons are shared between
atoms the result is:
a)
b)
c)
d)
an ionic bond
a hydrogen bond
a James Bond
a covalent bond
Section 2. Chemistry Review
When valence electrons move from one atom to
another the result is:
a)
b)
c)
d)
an ionic bond
a hydrogen bond
a James Bond
a covalent bond
Section 2. Chemistry Review
When valence electrons move from one atom to
another the result is:
a.) an ionic bond
b.) a hydrogen bond
c.) a James Bond
d.) a covalent bond
Section 2. Chemistry Review
Carbon is unique because
a)
b)
c)
d)
it can form 4 covalent bonds
it has 4 electrons in the outer orbital
it can form single, double or triple bonds
all of the above
Section 3: Biochemistry
Which of the following is least related to the
other four?
a) glucose
b) monosaccharide
c) starch
d) amino acid
Section 3: Biochemistry
The scientific term for large molecules
composed of repeating subunits is
a) monomer
b) glucose
c) polymer
d) amino acid
Section 3: Biochemistry
Complex carbohydrates are formed from
monosaccharides by
a) dehydration synthesis
b) hydrolysis
c) electrolysis
d) ionization
Section 3: Biochemistry
Which of the following is NOT a monomer?
a) monosaccharides
b) proteins
c) amino acids
d) glucose
Section 3: Biochemistry
Proteins are composed of sub-units (monomers)
called
a) sugars.
b) lipids.
c) amino acids.
d) nucleic acids
Section 3: Biochemistry
Proteins
a) are found in the cell membrane.
b) are enzymes
c) provide structural support.
d) all of the above are correct
Section 3: Biochemistry
Sugars and starches belong to a group of
chemicals called _______________.
a) lipids
b) carbohydrates
c) proteins
d) nucleic acids
Section 3: Biochemistry
What is the main function of carbohydrates in
living things?
a) catalyst for chemical reactions
b) major molecule that makes up proteins
c) source of quick energy for living things
d) insulates cells
Section 3: Biochemistry
Which organic molecule is used for long-term
energy storage, membrane structure, and waterproofing?
a) carbohydrates
b) amino acids
c) lipids
d) nucleic acids
Section 3: Biochemistry
An example of a nucleic acid is _____________.
a) antibody
b) monosaccharide
c) DNA
d) hemoglobin
Section 4: Enzymes
Chemical reactions within living cells can occur
very quickly, even at room temperature,
because of the action of:
a. enzymes
b. ATP
c. amino acids
d. sugar
Section 4: Enzymes
Enzymes are
a) proteins
b) used over and over again
c) not chemically changed during a
reaction
d) all of the above
Section 4: Enzymes
The left side of a chemical reaction lists the
___________ on which an enzyme acts.
a) substrate
b) active site
c) product
d) none of the above
Section 4: Enzymes
An enzyme functions by
a) raising the energy required for the
reaction to occur
b) lowering the energy required for the
reaction to occur
Section 4: Enzymes
An enzyme might not be effective
a) if the temperature is too high
b) if the temperature is too low
c) if it has changed shape (denatured)
d) all of the above
Section 4: Enzymes
Which of the following will affect the RATE of an
enzyme catalyzed reaction?
a.) enzyme concentration
b.) substrate concentration
c.) pH
d.) all of the above
Section 5. Cell Membrane and
Cellular Transport
Which of the following is semipermeable and
controls what goes into and out of the cell?
a. cytoplasm
b. cell membrane
c. chloroplast
d. SER
Section 5. Cell Membrane and
Cellular Transport
Diffusion is the movement of molecules from an
area of _______________concentration to an
area of ____________ concentration.
a. higher, lower
b. lower, higher
Section 5. Cell Membrane and
Cellular Transport
If a body cell is 91% water, what way will water
move when it is placed in a 95% water solution?
a. into cell
b. out of cell
c. water will not move
Section 5. Cell Membrane and
Cellular Transport
What will the cell in the previous question look
like?
a. blow up and burst like a balloon
b. shrink & shrivel up
c. stay the same
Section 5. Cell Membrane and
Cellular Transport
What molecule is the major component of the
cell membrane?
a. carbohydrates
b. nucleic acids
c. phospholipids
d. enzymes
Section 5. Cell Membrane and
Cellular Transport
The molecules that act as channels (or gates)
for movement of molecules into and out of the
cell are
a. glycolipids
b. Phospholipids
c. cholesterol
d. proteins
Section 5. Cell Membrane and
Cellular Transport
Movement of molecules across a cell
membrane requiring energy is called
a. active transport
b. osmosis
c. passive transport
d. diffusion
Section 5. Cell Membrane and
Cellular Transport
In the celery demonstration we saw water move
in relation to the solute concentration of the
water or saltwater solutions it was placed into.
This movement is an example of what process?
a. osmosis
b. Endocytosis
c. active transport
d. exocytosis
Section 5. Cell Membrane and
Cellular Transport
An amoeba bumps into a LARGE food particle.
How does it take it inside the cell?
a. osmosis
b. passive transport
c. endocytosis
d. exocytosis
Section 6: Cellular Structure
Ribosomes
a. make proteins
b. are made in the nucleolus
c. are attached to the ER
d. all of the above are true
Section 6: Cellular Structure
DNA is found in the
a. nucleolus
b. nucleus
c. ribosomes
d. cytoplasm
Section 6: Cellular Structure
The function of the chloroplast is:
a. reproduction
b. make protein
c. photosynthesis
d. respiration
Section 6: Cellular Structure
Which of the following organelles is responsible
for making energy in the form of ATP?
a. chloroplast
b. vacuole
c. mitochondria
d. lysosome
Section 6: Cellular Structure
If a mitochondria were removed from a cell:
a. the energy in the cell would be reduced
b. diffusion regulation would be lost
c. reproduction would stop
d. DNA would be destroyed
Section 6: Cellular Structure
You can tell the difference between plant and
animal cells by looking for:
a. cell walls and mitochondria
b. Golgi bodies and vacuoles
c. cell walls and chloroplasts
d. chromosomes and mitochondria
Section 7: Photosynthesis and
Respiration
The energy that a cell can use is transferred
from glucose and stored in a molecule called
a. DNA
b. ATP
c. RNA
d. PPT
Section 7: Photosynthesis and
Respiration
The plants in an ecosystem change _____ to
_____ .
a. chemical energy, light energy
b. light energy, chemical energy
c. chemical energy, water
d. light energy, water
Section 7: Photosynthesis and
Respiration
During _____ light energy from the sun is used
to make glucose.
a. photosynthesis
b. digestion
c. respiration
d. phagocytosis
Section 7: Photosynthesis and
Respiration
The process of cellular respiration occurs in the
_____ .
a. chloroplasts
b. lysosome
c. golgi body
d. mitochondria
Section 7: Photosynthesis and
Respiration
Both photosynthesis AND cellular respiration
occur in plants.
a. True
b. False
Section 7: Photosynthesis and
Respiration
Which of the following is a substrate (required)
for cellular respiration to occur?
a. carbon dioxide
b. sunlight
c. glucose
d. water
Section 8. Bacteria and Viruses
Antibiotics kill
A. Bacteria
C. Viruses
B. Both A & B
D. Neither A or B
Section 8. Bacteria and Viruses
Prokaryotes do have a cell membrane but do not
have a
A. Ribosome
B. cell wall
C. nucleus
D. plasmid
Section 8. Bacteria and Viruses
Which of the following is NOT caused by a
bacteria?
A. AIDS
B. Lyme Disease
C. Strep Throat
D. Food Poisoning
Section 8. Bacteria and Viruses
A virus is a particle that consists of a core of
nucleic acid and a
A. protein coat (capsid)
B. mitochondrion
C. bacterium
D. crystal
Section 8. Bacteria and Viruses
Which characteristic of living things do viruses
lack?
A. DNA
B. protein
C. RNA
D. independent growth
Section 8. Bacteria and Viruses
To prevent disease, a person is injected with a
weakened form of a virus or bacteria, or one of
its proteins. This is called
A. transference
B. genetic engineering
C. vaccination
D. replication
Section 8. Bacteria and Viruses
Which best describes antibiotics?
A. they are chemicals (drugs)
B. they work relatively quickly
C. they kill bacteria
D. all of the above (A, B, & C)
Section 8. Bacteria and Viruses
A major difference between bacterial cells and
animal cells is bacteria have a
A. cell wall
B. DNA
C. ribosomes
D. cell membrane
Section 9. Lab Safety:
Safety goggles should be worn in the laboratory
to:
A. avoid eye strain
B. Only if you don’t wear glasses
C. Any time chemicals, heat or glassware
are used
D. To improve your vision
Section 9. Lab Safety:
If you do not understand directions or part of a
lab procedure, you should:
A.. Figure it out as you do the lab
B. Ask your teacher before proceeding
C. Skip it and go on to the next part
D. Try several methods until something
works
Section 9. Lab Safety:
After completing an experiment, all chemical
wastes should be:
A. Left at your lab station for the next class
B. Disposed of according to your teacher’s
instructions
C. Dumped down the sink
D. Taken home
Section 9. Lab Safety:
You have been injured (cut, burned, etc.) in the
laboratory. You should:
A. Tell your science teacher immediately
B. See a doctor after school
C. Apply first aid to yourself
D. Visit school nurse later
Section 9. Lab Safety:
When you finish working with chemicals, biological
specimens, or other substances, you should:
A. Wash your hands with soap and water
B. Return materials as directed by teacher
C. Verify that your lab desk is clean & sink
empty
D. All of the above