home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
800 College Boards
/
800 College Boards.iso
/
cbrd43
/
module4
< prev
next >
Wrap
Text File
|
1992-01-01
|
4KB
|
202 lines
NEW SET
A
For each question, indicate whether:
(A) choices 1, 2, and 3 are correct
(B) only choices 1 and 2 or any other combination are correct
(C) only choice 1 is correct
(D) only choice 2 is correct
(E) only choice 3 is correct
next
1
1. Subjecting fruit flies to radiation for a prolonged period of time
will:
(1) increase the incidence of mutations
(2) cause phenotypic variants to appear
(3) destroy and/or alter the genes
next
a
0
2
Correct.
next
wrong answer explanation
2
(A) All are effects of radiation.
next
2
2. Stimulating the spinal nerves with an electric current may cause the
following reaction in a pithed frog:
(1) knee-jerk reflex
(2) scratching
(3) reversal of peristalsis
next
b
0
3
Correct.
next
wrong answer explanation
3
(B) Knee-jerk and scratching result.
next
3
3. Removing the leaves from a green plant will:
(1) kill the plant
(2) prevent transpiration
(3) reduce photosynthetic rates
next
a
0
B
Correct.
next
wrong answer explanation
B
(A) All of these will result.
next
NEW SET
B
For each question, indicate whether:
(A) choices 1, 2, and 3 are correct
(B) only choices 1 and 2 or any other combination are correct
(C) only choice 1 is correct
(D) only choice 2 is correct
(E) only choice 3 is correct
next
1
4. 10 ml of salt solution added to a 20-gallon aquarium of tropical fish:
(1) kills all the tropical fish
(2) evaporates 25 percent of the total water volume in less than
24 hours
(3) checks the growth of green algae
next
e
0
C
Correct.
next
wrong answer explanation
C
(E) The solution will not kill fish.
next
NEW SET
C
Type the letter of the best answer.
next
1
5. Why doesn't the pressure of the atmosphere crush animals?
(A) Their bodies are strongly built.
(B) They have an inside pressure much greater than atmospheric
pressure
(C) They have an inside pressure equal to the atmospheric pressure.
(D) They have an inside pressure much less than atmospheric pressure.
(E) The pressure of the atmosphere is uniformly distributed over
their bodies.
next
c
0
2
Correct.
next
wrong answer explanation
2
(C) Living things maintain an equal pressure within their bodies.
next
2
6. Mosses seldom grow more than a few inches tall, whereas ferns may
grow to be several feet in height. Which structural difference
accounts for this difference in growth?
(A) Mosses lack xylem.
(B) Mosses reproduce by means of spores.
(C) Ferns have chlorophyll in their leaves.
(D) Ferns have been in existence much longer than mosses.
(E) Ferns produce flowers.
next
a
0
3
Correct.
next
wrong answer explanation
3
(A) The lack of xylem prevents height.
next
3
7. If the mother has Rh negative blood and the developing embryo has
Rh positive blood, the mother's blood would most likely:
(A) neutralize the baby's Rh positive blood cells
(B) produce antibodies against the Rh positive blood cells
(C) be clumped by the baby's blood
(D) show an increase in white blood cells
(E) none of these
next
b
0
D
Correct.
next
wrong answer explanation
D
(B) An antigenic substance will induce the formation of antibodies.
next
NEW SET
D
A student examined a microscope slide of cells that had been removed
from a root and observed the following: Cell #1 had very thin walls;
Cell #2, which had very thick walls, was dead; and a mitotic division was
taking place in Cell #3.
Indicate whether each cell was a:
(A) root hair cell
(B) cell in the growing region
(C) root cap cell
(D) palisade cell
(E) mesophyll cell
next
1
8. Cell #1
next
a
0
2
Correct.
next
wrong answer explanation
2
(A) These cells have thin walls.
next
2
9. Cell #2
next
c
0
3
Correct.
next
wrong answer explanation
3
(C) Cells of the root cap are dead.
next
3
10. Cell #3
next
b
0
E
Correct.
next
wrong answer explanation
E
(B) Mitotic reproduction suggests duplication of cells at a rapid rate.
end