Practise Test 3. Most of these questions apply to the material covered in class. Those that were not covered will be covered in the next section of test material. Save this test for future reference. To download a PDF version which is printed more easily, click here.
Multiple Choice. Choose the one correct answer for each
of the following questions. Mark
the correct answer on your Scantron answer form.
1. Which of the following cell types is responsible for
initiating antibody production of the
primary immune response?
a. memory cells
d. B cells
b. macrophages
e. T cells
c. stem cells
2. Which of the
following are effector mechanisms of humoral immunity?
I. Activation of complement
II. Neutralization
III. Precipitation
a. I only
d. II and III only
b. II only
e. I, II, and III
c. I and II only
3. Which of the following transfusions is compatible?
Donor Recipient
a) A+ B-
b)
A- AB+
c)
O+ O-
d) AB- O+
4. T cells can only recognize an antigen if
a. it is free in the body fluid.
b. it is displayed by a B cell.
c. it is displayed along with an MHC
antigen.
d. T cells do not bind to antigens at all.
5. Which cells directly destroy body cells that are infected by
viruses?
a. helper T cells
b. cytotoxic T cells
c. memory cells
d. B cells
6. Passive immunity can be obtained by
a. having the disease
b. receiving a vaccination against the
disease.
c. receiving antibodies by injection.
d. being injected with a small dose of the
antigen.
7. Of
the following, AIDS is usually transferred by
a. casual contact.
b. food.
c. water.
d. sexual intercourse.
e. insect bites.
Use the following diagram to
answer questions 8-11
8. The genotype of this individual is
a.
Nb
b. NNBB
c. NnBB
d. NNBb
9. A daughter cell after this cell undergoes both divisions of
meiosis could have the genotype
a. Nb
b. NNBb
c. nB
d. NbNB
10. A daughter cell after this cell undergoes mitosis could have
the genotype
a. NB
b. NnBb
c. NNBb
d. Nn
11. Can the organism whose genes are shown above express the
recessive phenotype for either of these traits?
a. yes
b. no
c. it is impossible to tell
12. An organism will show a recessive phenotype if its genotype
is
a. A.
b. AA
c. aa
d. Aa
d. a
13. When does crossing over start in meiosis?
a. Prophase I
d. Prophase II
b. Anaphase I
e. Anaphase II
c. Metaphase II
Match the following choices
to questions 14- 18. Choices may
be used once, more than once, or not at all.
a)
Naturally acquired active immunity
b)
Naturally acquired passive immunity
c)
Artificially acquired active immunity
d)
Artificially acquired passive immunity
14. Type
of protection Brian wants after being bitten by a rattlesnake for the first
time.
15. Brian
is having an unlucky week and gets bit by another rattlesnake a week
later. What type of protection
does he want this time?
16. Type
of protection my dog has from her distemper vaccination.
17. Type
of protection all of us have once we have had chicken pox.
18. Type
of protection a baby gets from its mother's milk.
19. Interferon is a chemical produced by
a. helper T cells
b. plasma cells
c. B cells
d. macrophages
e. cells that are infected with a virus
20. An Rh+ molecule in the body of an Rh- person is considered
to be a(n)
a.
antigen
b. antibody
c. helper T cell
d. cytotoxic T cell
e. memory cell
21. A cell containing 24 chromosomes at the start of mitosis
would, at
its completion, produce cells containing how
many chromosomes?
a. 12
d. 48
b. 16
e. 96
c. 24
22. From the drawing above, one can determine that
the cell is in which
phase of meiosis?
a. metaphase II
d. interphase I
b. anaphase I e.
telophase II
c. prophase I
23. Inflammation
a. causes a localized increase in
temperature, increasing the rate of reactions.
b. relults in the blood vessels near the
infection site becoming leaky.
c. causes local swelling.
d.
is part of the nonspecific defense
system.
e. all of the above.
24. An antibody is a protein shaped like the letter
a. E.
b. K
c. Y.
d. W.
Use the graph below to answer
questions 25-26
25. Time A on the graph indicates
a. first exposure to an antigen
b. second exposure to an antigen
c. third exposure to an antigen
d. the person has a compromised immune
system
26. Time B on the graph indicates
a. first exposure to an antigen
b. second exposure to an antigen
c. third exposure to an antigen
d. the person has a compromised immune
system
27. If an HIV-infected patient does produce antibodies against
the virus, why are they ineffective?
a. This type of virus can not bind to
antibodies.
b. This virus mutates too rapidly for
antibodies to be effective.
c. By the time antibodies are produced,
the virus has already entered cells.
d. Antibodies are not produced against
this virus.
28. If R represents a dominant allele, and r a recessive allele
for the same trait, a homozygous recessive individual will have which of the
following genotypes:
a. RR
b. Rr
c. rR
d. rr
e. none of the above.
29. The products of meiosis in animals become
a. diploid cells
b. gametes
c. multicellular organisms
d. nuclei
30. An organism with which of the following genotypes can
produce gametes with either the dominant or recessive allele in equal amounts.
a. tt b. Tt c. rr d. TT
Genetics Problems. Show your work to receive partial
credit. Use the back if necessary.
(10 points each)
31. In humans, brown eyes are dominant over blue eyes. Suppose a blue-eyed man marries a
brown-eyed woman whose father was blue-eyed. What proportion of their children would you predict will
have blue eyes?
32. A black guinea pig crossed with an albino one gave 12 black
offspring. When the albino was
crossed with a second black one, 7 blacks and 5 albinos were obtained. What is the best explanation for the
type of inheritance illustrated?
What are the genotypes of the parents, gametes and offspring? Show your work to receive partial
credit.
33. In Cocker Spaniels, black color is due to a dominant gene B,
and red color to its recessive allele b. Solid color is dependent on a dominant
gene S, and white–spotting on its recessive allele s. A solid red male was mated to a
black-and-white female. They have
five puppies; one black, one red, one black-and-white, and two red-and white. What were the genotypes of the parents?
34. In peas tall (T) is dominant over its allele for short (t),
and
smooth (S) is dominant over its allele for
wrinkled (s) peas. What
would be the expected offspring if you crossed a
homozygous tall,
wrinkled seed plant with a short, homozygous smooth-seeded plant?