Name: ____________________________________
1. Stained yeast were added to a paramecium culture, and some
of the yeast were ingested by the paramecia. This activity is
most closely associated with which life function?
A. synthesis
B. regulation
C. nutrition
D. growth
2. Organisms that obtain and ingest organic molecules for their
nutrition are classified as
A. autotrophs
B. producers
C. algae
D. heterotrophs
3. A student divided some insect larvae into four equal groups,
each having the same amount of food. Each group was kept at a
different temperature, and the average length of the larvae was
determined after each shedding of the exoskeleton (molt). The
data obtained are shown in the data table below.
5. An investigation was conducted using three groups of
laboratory rats, X, Y, and Z, to determine the relative effects of
glucose and adrenaline on the rate of heartbeat. The
experimental conditions for each group of rats were kept the
same except for the type of solution injected, as shown in the
data table below.
Data Table
Group
Solution Injected
X
1 mL adrenaline in distilled water
Y
1 mL glucose in distilled water
Z
1 mL distilled water, only
According to the data table, which group of rats functioned as
the control?
A. B. C. D. X, only
Y, only
Z, only
both X and Y
6. Which term includes all the activities required to keep an
organism alive?
A. growth
B. excretion
C. metabolism
D. nutrition
According to the data, the most favorable temperature for total
growth in these larvae is
A. B. C. D. 15°C
20°C
25°C
30°C
4. The life function of transport in an organism directly
involves those activities used to
A. absorb and distribute materials
B. obtain and hydrolyze materials
C. release energy from food
D. produce cellular waste products
7. An organism was kept at a temperature of 40°C for a period
of 2 weeks. At the end of that time, the investigator determined
that the organism was sterile. To support the hypothesis that
high temperatures cause sterility, the investigator should be
able to show that the
A. organism was not sterile before the experimental period
began
B. high temperature did not alter the blood pressure of the
organism
C. pituitary gland of the organism had not degenerated
D. organism was homozygous for temperature sensitivity
8. Base your answer on the diagram below and on your
knowledge of biology.
Which statement describes two unsafe laboratory practices
represented in the diagram?
A. The flame is too high and the test tube is unstoppered
B. The opening of the test tube is pointed toward the
student and the student is not wearing goggles.
C. The test tube is unstoppered and the student is not
wearing goggles.
D. The beaker has water in it and the flame is under the
tripod.
9. Graphs of the data from laboratory investigations are used to
A. observe general trends in the data
B. make the observed data more accurate
C. prevent errors in measuring data
D. help change the original data tables
10. When a person's level of physical activity changes, the
circulatory system supplies body cells with amounts of
nutrients and oxygen that are appropriate to sustain the new
level of activity. This statement illustrates the concept of
A. homeostasis
B. pinocytosis
C. synthesis
D. cyclosis
11. Which organism is classified as a heterotroph?
A. mushroom
B. maple tree
C. geranium
D. moss
12. A new concept that is tested in a scientific investigation is
known as
A. a theory
B. the hypothesis
C. in inference
D. an observation
13. A water plant placed in bright light gives off bubbles. A
student notes that placing the light at different distances from
the plant causes the rate of bubbling to vary. The student
decides to design an experiment to investigate the effect of
light intensity on the rate of bubble production. An appropriate
control for this experiment would be
A. a plant at a fixed distance from the light source
B. a plant exposed to sunlight
C. the addition of oxygen to the water
D. the use of blue light on some of the plants
14. Which life process is classified as autotrophic in some
organisms and heterotrophic in other organisms?
A. hormonal regulation
B. nutrition
C. anaerobic respiration
D. transport
15. A new drug for the treatment of asthma is tested on 100
people. The people are evenly divided into two groups. One
group is given the drug, and the other group is given a glucose
pill. The group that is given the glucose pill serves as the
A. experimental group
B. limiting factor
C. control
D. indicator
16. A scientific study showed that the depth at which algae
were found in a lake varied from day to day. On clear days, the
algae were found as much as 6 meters below the surface of the
water, but were found only 1 meter below the surface on cloudy
days. Which hypothesis best explains these observations?
A. Light intensity affects the growth of algae.
B. Wind currents affect the growth of algae.
C. Nitrogen concentration affects the growth of algae.
D. Precipitation affects the growth of algae.
17. Excretion is best described as the removal of
A. metabolic wastes from a cell
B. toxic wastes by the process of cyclosis
C. water molecules from dipeptide hydrolysis
D. undigested material from the digestive tract
18. Diagrams, tables, and graphs are used by scientists mainly
to
A. design a research plan for an experiment
B. test a hypothesis
C. organize data
D. predict the independent variable
19. Which phrase best describes cellular respiration, a process
that occurs continuously in the cells of organisms?
A. removal of oxygen from the cells of an organism
B. conversion of light energy into the chemical bond
energy of organic molecules
C. transport of materials within cells and throughout the
bodies of multicellular organisms
D. changing of stored chemical energy in food molecules
to a form usable by organisms
20. Prions are proteins that act as an infectious agent. They
cause a variety of diseases, including “Mad Cow” disease.
Prions cannot produce more prions on their own, but cause the
host organism to replicate more prions. Most scientists do not
consider prions to be alive. A valid reason for accepting that
prions are nonliving things is that
A. no living thing can cause a disease
B. proteins are inorganic molecules
C. prions contain all of the material needed to reproduce
D. prions cannot carry out reproduction independently