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Concepts of Biology (BIOL116) - Dr. S.G. Saupe; Biology Department, College of St. Benedict/St. John's University, Collegeville, MN 56321; ssaupe@csbsju.edu; http://www.employees.csbsju.edu/ssaupe/ |
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Concepts of Biology (BIOL116) - Dr. S.G. Saupe; Biology Department, College of St. Benedict/St. John's University, Collegeville, MN 56321; ssaupe@csbsju.edu; http://www.employees.csbsju.edu/ssaupe/ |
CONCEPTS
OF BIOLOGY - BIOLOGY 116
name___________________________
Dr. S. G. Saupe; Spring 1995
Sample
Exam
Cauliflower is
nothing but a
cabbage with a college education.
Mark Twain
| General Instructions: Answer the multiple choice questions on the computerized sheet in pencil. Be sure to code in your ID number correctly and write your name on the answer sheet. Non-multiple choice questions should be answered directly on the pages provided. Please make sure your name is on each sheet before handing it in. Please sign the pledge at the end of the exam if you have complied with its terms (i.e., do your own work). Have fun, and we hope that you're feeling more like a cauliflower than a cabbage! |
Multiple
choice questions: Darken the single, best choice in the appropriate place on the
answer sheet. There are no
"known" tricks! (1 point each)
1.
Vascular plant tissue includes all of the following cell types EXCEPT
a. vessels. d. companion cells.
b. sieve cells.
e. cambium cells.
c. tracheids.
2. The photosynthetic cells in the interior of a leaf are what
kind of cells?
a. parenchyma
d. phloem
b. collenchyma
e. endodermis
c. sclerenchyma
3. Which functional plant cells lack a nucleus?
a. xylem only
b. sieve tube cells
only
c. companion cells only
d. both companion and
parenchyma cells
e. both xylem and sieve tube cells
4. The fiber cells of plants are a type of
a. parenchyma.
d. meristematic cell.
b. sclerenchyma.
e. phloem cell.
c. collenchyma.
5. One important difference between the anatomy of roots and the anatomy of
leaves is that
a. only leaves
have phloem and only roots have xylem.
b. the cells of
roots have cell walls that are lacking in leaf cells.
c. a waxy
cuticle covers leaves but is absent in roots.
d. vascular
tissue is found in roots but it is absent from leaves.
e. leaves have
epidermis, while such tissue is absent from roots.
6.
What tissue makes up most of the wood of a tree?
a. primary xylem
d. mesophyll cells
b. secondary
xylem
e. vascular cambium
c. secondary
phloem
7.
All of the following cell types are correctly matched with their functions
EXCEPT
a.
mesophyll/photosynthesis.
b. guard
cell/regulation of transpiration.
c. sieve tube
member/translocation of sugars.
d. vessel
element/water transport.
e. companion cell/formation of secondary xylem
and phloem.
8.
Which of the following root tissues gives rise to secondary roots?
a. endodermis
d. epidermis
b. phloem e. pericycle
c. cortex
9. Additional vascular tissue produced as secondary growth in
a root or stem originates from which cells?
a. vascular
cambium
d. phloem
b. apical
meristem
e. xylem
c. endodermis
10.
A student examining leaf cross sections under a microscope finds many loosely
packed cells with relatively thin cell walls. The cells have numerous
chloroplasts. What cells are these?
a. parenchyma
d. collenchyma
b. xylem e. sclerenchyma
c. endodermis
11. Pores on the leaf surface that function in gas exchange are called
a. hairs. d. stomata.
b. xylem cells.
e. sclereids.
c. phloem cells.
12.
Bark
a. is composed
of phloem plus periderm.
b. is associated
with annuals but not perennials.
c. is formed by
apical meristems.
d. has no
identifiable function in trees.
e. forms annual
rings.
13.
The opening of stomates is thought to involve
a. an increase
in the osmotic concentration of the guard cells.
b. a decrease in
the osmotic concentration of the stoma.
c. active
transport of water into the guard cells.
d. decreased
turgor pressure in guard cells.
e. movement of
K+ out of guard cells.
14.
The water within xylem vessels moves toward the top of a tree (long distances)
as a result of
a. active
transport of ions into the vascular bundle.
b. atmospheric
pressure on roots.
c. evaporation
of water through stoma.
d. the force of
root pressure.
e. osmosis in
the root.
15.
According to the pressure-flow hypothesis of phloem transport,
a. solute moves
from a high concentration in the "source" to a lower concentration in
the "sink."
b. water is
actively transported into the "source" region of the phloem to create
the turgor pressure needed.
c. the
combination of a high turgor pressure in the "source" and
transpiration water loss from the "sink" moves solutes through phloem
conduits.
d. the formation
of starch from sugar in the "sink" increases the osmotic
concentration.
e. the pressure
in the phloem of a root is normally greater than the pressure in the phloem of a
leaf.
16.
Water entering the vascular bundle of the root from the cortex must pass through
the
a. Casparian
strip.
d. epidermis.
b. phloem.
e. xylem.
c. endodermal
cytoplasm.
17.
George Washington completely removed the bark from around a cherry tree but was
stopped by is father before cutting the tree down. It was noticed that the
leaves retained their normal appearance for several weeks, but that the tree
eventually died. The tissue(s) that George left functional was (were) the
a. phloem. d.
cortex.
b. xylem. e.
companion and sieve cells.
c. cork cambium.
18.
Arrange the following five events in an order that explains the mass flow of
materials in the phloem.
1. Water diffuses
into the sieve elements.
2. Leaf cells
produce sugar by photosynthesis.
3. Solutes are
actively transported into sieve elements.
4. Sugar is
transported from cell to cell in the leaf.
5. Sugar moves down
the stem.
a. 2, 1, 4, 3, 5
b. 1, 2, 3, 4, 5
c. 2, 4, 3, 1, 5
d. 4, 2, 1, 3, 5
e. 2, 4, 1, 3, 5
19.
Photosynthesis begins to decline when leaves wilt because
a. flaccid cells
are incapable of photosynthesis.
b. CO2
accumulates in the leaves and inhibits photosynthesis.
c. there is
insufficient water for photolysis during light reactions.
d. stomata
close, preventing CO2 entry into the leaf.
e. the
chlorophyll of flaccid cells cannot absorb light.
20.
Root hairs are most important to a plant because they
a. anchor a
plant into the soil.
b. store
starches.
c. increase the
surface area for absorption.
d. provide a
habitat for nitrogen-fixing bacteria.
e. contain xylem
tissue.
21. In plant roots, the Casparian strip is correctly described by which of the
following?
a. It is located
in the walls between endodermal cells and cortex cells.
b. It provides
energy for the active transport of minerals into the vascular bundle from the
cortex.
c. It ensures
that all minerals are absorbed from the soil in equal amounts.
d. It ensures that all water and dissolved substances must pass through a
cell before entering the vascular bundle.
e. It provides
increased surface area for the absorption of mineral nutrients.
22. Which of the following best describes the general role of micronutrients in
plants?
a. They are
cofactors in enzyme reactions.
b. They are
necessary for essential regulatory functions.
c. They prevent
chlorosis.
d. They are
components of nucleic acids.
e. They are
necessary for the formation of cell walls.
22. All of the following are elements that plants need in very
small amounts (micronutrients) EXCEPT
a. hydrogen.
d. copper.
b. iron. e.
zinc.
c. chlorine.
23. In the nutrition of a plant, which element is classified as a macronutrient?
a. zinc d.
molybdenum
b. chlorine e.
manganese
c. calcium
24. Which of the following is the major role of potassium in plants?
a. osmotic
regulation
d. reproduction
b.
photosynthesis
e. lipid metabolism
c. ATP synthesis
25. Which of the
following are botanically classified as a fruit?
a. asparagus
d. carrot
b. celery e.
potato
c. green beans
28. Which of the following
processes occurs in an anaerobic environment?
a.
glycolysis
b.
Kreb's cycle
c.
mitochondrial electron transport
d.
both a and c will occur in an anaerobic environment
29. Carbon dioxide is produced
during:
a.
glycolysis
b.
the Kreb's cycle
c.
the mitochondrial electron transport chain
d.
substrate level phosphorylation reactions
e.
all of the reactions above produce carbon dioxide
30. The electron transport chain in
the mitochondrion pumps protons from the ________ to the ________.
a.
matrix; intermembrane space
b.
matrix; stroma
c.
intermembrane space; matrix
d.
matrix; cytoplasm
31. During the complete breakdown
of glucose into carbon dioxide and water, approximately _____ net ATP are
produced via substrate level phosphorylations and approximately _____ net ATP
are produced via oxidative phosphorylation.
a.
0, 32
d. 16, 16
b.
4, 32
e. 32, 4
c.
8, 28
32. Given the general equation for
respiration,
C6
H12*O6 + 6O2
�
6CO2 + 6 H2O, which of the following is true?
a.
glucose is reduced to water
b.
oxygen is reduced to carbon dioxide
c.
glucose is oxidized to carbon dioxide
d. oxygen
is oxidized to water
e.
glucose and oxygen are both oxidized to carbon dioxide
33. Approximately how many
different redox reactions occur during glycolysis?
a.
1
b.
2
c.
5
d.
10
e.
none of the reactions are redox reactions
34. The first biochemical pathway
to evolve in living things was most likely:
a.
fermentation
b.
glycolysis
c.
the Kreb's cycle
d.
the mitochondrial electron transport chain
35. Which of the following
statements about glycolysis is TRUE?
a.
no ATP are made during glycolysis
b.
Glycolysis requires 32 ATP to work
c.
One redox reaction occurs during glycolysis
d.
Glycolysis occurs only under anaerobic conditions
e.
There are two oxidative phosphorylation reactions during glycolysis
36. The fruit of a tomato develops
directly from the:
a.
anther d.
receptacle
b.
ovary e.
stigma
c.
ovule
37. Tomato seeds were once:
a.
an ovary
c. pollen grains
b.
ovules d.
sperms
38. Fertilization occurs in the:
a.
anther d.
root
b.
ovule e.
style
c.
petal
39.
During double fertilization, two sperms fuse with female cells to
produce:
a. seed
and fruit
c. ovule and
ovary
b.
embryo and zygote
d. endosperm and zygote
40. The function of the sepals is
to:
a.
produce the pollen
b.
attract pollinators
c.
protect the other floral structures
d.
serve as the receptive landing surface for the pollen
For each of the following cells, indicate if the structure is: a. haploid
b. diploid
c. triploid
d. hexaploid
41. _____ flower petal cells
42. _____ root cell
43. _____ endosperm cells
44. _____ cell in a pollen grain
45.
Following pollination, indicate the sequence of tissues the pollen tube
would pass through as it grows toward its rendezvous with the egg.
a.
micropyle �
ovary �
style �
stigma �
ovule �
egg
a. ovule
�
ovary �
micropyle �
stigma �
style �
egg
a. stigma �
style
�
ovary �
ovule �
micropyle �
egg
a. style
�
ovary �
ovule �
stigma �
micropyle �
egg
a. style
�
stigma
�
ovary �
ovule �
micropyle �
egg
46.
Wind-pollinated flowers are typically:
a.
large
c.
sweet scented
b. very
colorful d.
produce copious pollen
Matching:
Match each of the following with the appropriate cell/tissue