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Biology
Name ____________________________________ Date ___________________
Which question can be tested scientifically?
Does humidity affect the decay rate of leaves?
How does a biologist become successful?
What shape are the flowers of a cherry tree?
Why do science teachers like to give homework?
Which scientific design has both practical limitations and limitations due to scale?
studying the effect of bleach on the growth of mold spores
exposing cultures of duckweed to different intensities of light
observing the replication of DNA molecules with a hand lens
using colored marbles to model a cross between two colors of rabbits
Which best describes cancer cells?
Cancer cells cannot enter the circulatory system.
Cancer cells grow controllably.
Cancer cells attach to organs.
Cancer cells lose nutrients to healthy cells.
If a person were fasting and hadn’t eaten for several days in a row, which source of energy
would the body use as a last resort?
lipids
protein
glycogen
lactic acid
A student constructs a Venn diagram to compare the organelles in plant and animal cells.
Venn Diagram of Plant and Animal Cells
Which organelle should be listed under “Both” in the diagram?
centriole
mitochondrion
chloroplast
cell wall
Mei wants to study whether heart rate increases more during certain exercises than during
others. She designs an experiment to test the heart rates of classmates in the morning and
in the evening for three days, immediately after doing jumping jacks, doing push-ups, or
running in place. What is the dependent variable in this experiment?
classmates
type of exercise
heart rate
time of day
The most abundant element in the atmosphere can also be found in
white sugar and soy protein.
fruits and hydrogenated oils
carbonated water and glucose.
beans and whey protein.
Why is this considered a nonscientific question?
“What color is a great horned owl?”
The question reflects an opinion.
The question addresses a gap in knowledge.
The question does not require testing to answer.
The question asks about phenomena that cannot be measured
Which statement is least likely to support the endosymbiotic theory?
Mitochondria and chloroplasts reproduce independently from the cell.
Mitochondria and chloroplasts contain their own ribosomes.
Mitochondria and chloroplasts have DNA that resembles bacterial DNA.
Mitochondria and chloroplasts are much larger than prokaryotic cells.
Drinking too much water during exercise can cause a condition in which the concentration
of sodium in the blood is lower than normal. What response do you expect to happen as the
body tries to restore homeostasis?
Cells swell as water moves into them.
Cells swell as water moves out of them.
Cells shrivel as water moves out of them.
Cells shrivel as water moves into them
Which best describes reproduction?
Asexual reproduction produces offspring that are identical to the parent.
Sexual reproduction allows for diploid gametes to combine to increase genetic variation.
Asexual reproduction leads to the formation of haploid gametes.
Sexual reproduction does not require the production of gametes.
Look at the picture below.
What macromolecules make up most of the structure that is shown?
carbohydrates
lipids
nucleic acids
proteins
Which organelle breaks down sugar molecules that supply energy to the cell?
Golgi apparatus
nucleus
endoplasmic reticulum
mitochondrion
Which two groups of organisms contain members that carry out photosynthesis?
fungi and plants
plants and algae
protists and fungi
animals and algae
Which characteristic of life best describes the process of photosynthesis?
using energy
containing cells
reproducing
growing and developing
Which is best illustrated by Watson and Crick's ball-and-stick model of DNA?
the importance of sticking to established methods of science
the role of creativity in scientific discovery
the value of individual scientists working independently from one another
the importance of carrying out procedures that can be replicated
Which microscope uses a probe to map atoms on the surface of a specimen?
transmission electron microscope
compound light microscope
scanning electron microscope
scanning tunneling microscope
Jim’s heart rate was monitored during periods of exercise and periods of rest. The graph
shows the result of one 50-minute test.
Which statement is an inference that can be made by using the graph?
Jim’s heart rate was 60 beats per minute at the start of the test.
Jim’s maximum heart rate during the test was 140 beats per minute.
Jim’s heart rate increased steadily as he continued exercising.
Jim’s heart rate decreased quickly after 30 minutes since he is in good shape.
The diagram illustrates one method of genetic recombination.
Which method of genetic recombination is illustrated in the diagram?
crossing over
independent assortment
fertilization
tetrad formation
Which statement best describes cancer cells?
They grow as a single layer of cells.
They cease to reproduce after 20–50 mitotic divisions.
They reproduce only when needed to replace missing cells.
They are not regulated by contact inhibition.
The heart is an example of which level of organization within an organism?
cell
organ
tissue
organ system
Which homeostatic process moves particles against a concentration gradient?
dynamic equilibrium
passive transport
osmosis
active transport
After chromosomes are formed, during which phase of mitosis do the chromosomes attach
to the spindle fibers by their centromeres?
anaphase
prophase
metaphase
telophase
How does a good experimental conclusion differ from an inference?
A conclusion relates the evidence to the hypothesis and inference is a guess.
A conclusion explains data and an inference is predicts what will occur next.
A conclusion provides less information to the reader than an inference.
A conclusion is proven to be correct; an inference is disproved by evidence.
The study of which structure was instrumental in the formulation of the modern cell theory?
plant cell
animal cell
cell membrane
DNA molecule