BIOL 1003 -
BIOLOGICAL SCIENCE
PRACTICE EXAM 2
1. The person, who first used and coined the word “cell”, while
viewing a thin slice of cork under magnification through a light microscope was
______________________.
A. Robert
Hooke
B. Anton
van Leeuwenhoek
C. Matthias
Schleiden
D. Theodor
Schwann
E. Rudolf
Virchow
2. Organisms composed of small cells (0.4-5.0
micrometers in size), lacking a membrane-bound nucleus and other organelles in
the cytoplasm (cytosol) are called
__________________; examples which include _______________.
A. prokaryotes; amoebae, paramecia, unicellular green algae, and
other protists
B. prokaryotes;
bacteria, “blue-green” algae or cyanobacteria
C. eukaryotes;
amoebae, paramecia, unicellular green algae, and other protists
D. eukaryotes;
bacteria, “blue-green” algae or cyanobacteria
E. protobionts; slime molds, fungi, animals, and plants
3. In microscopy, _________________ is the
defined as the ability to separate two or more objects that are close together
and show them as distinct entities.
A. magnification
B. contrast
C. amplification
D. resolution
E. dissection
4. If a
cell did not have ribosomes, it would be unable to
_______________________.
A. extract energy from
glucose
B. synthesize glucose
C. store food in the form of fat
D. form proteins
E. utilize energy from sunlight through the
process of photosynthesis
5. Which of the following organelles is
correctly matched with its function?
A. nucleus:
lipid synthesis
B. endoplasmic
reticulum: heredity
C. Golgi complex or apparatus: packaging of
cell products
D. mitochondria: photosynthesis
E. chloroplasts: storage of lipids
6. If the eukaryotic cell were a factory, the
rough endoplasmic reticulum would be analogous (similar) to the ______________.
A. walls of the building
B. assembly
line
C. control center
D. power plant
E. building
security
7. In
an attempt to visualize the fluid mosaic model of a biological membrane, we
could describe the ______________ as floating in a sea of ____________.
A. phospholipids; protein
B. phospholipids; carbohydrate
C. proteins; phospholipids
D. fats; water
E. glycolipids;
sterol
8. The
passive movement of a substance through channel and carrier proteins as it
follows its concentration gradient across a cell membrane is an example of
______________________.
A. inhibited translocation
B. active transport
C. simple diffusion
D. facilitated
diffusion
E. the use
of chemical energy in the form of ATP
9. When a typical cell is placed in a
hypertonic solution, ____________________.
A. water tends to move into the cell
B. water tends to move out of the cell
C. water does not move into or out of the cell
D. exocytosis will have to occur
E. endocytosis will
have to occur
10. Movement of a molecule against a
concentration gradient is _________ and ______________.
A. simple
diffusion; does not require the addition of energy
B. facilitated
diffusion; requires the addition of energy
C. osmosis;
does not require the addition of energy
D. active
transport; requires the addition of energy
E. bulk
flow; does not require the addition of energy
11.
Cytokinesis is a term that describes __________________.
A. doubling the chromosome number
B. nuclear division
C. cytoplasmic
division
D. reducing the chromosome number
12. Fruit flies have 8 chromosomes per nucleus
in each somatic (body) cell. At the END
of mitosis in fruit flies, each cell has _______ chromosomes and each
chromosome has ____ chromatid(s).
A. 4; one
B. 4; two
C. 8; one
D. 8; two
E. 8; four
13. The type of nuclear division involved in growth
and asexual reproduction among eukaryotic single-celled and multicellular
organisms is called _____________________.
A. meiosis
B. mitosis
C. myosis
D. fission
E. gametogenesis
14. Homologous chromosomes or homologues
__________________.
A. are similar in size and length
B. have the same centromere position
C. carry the same
kinds of traits or genes
D. have different parental origins (one is from
the mother and the other is from the father)
E. All of the above choices are correct
15. In sexually-reproducing organisms, novel or
new genetic combinations are produced through _______________________.
A. crossing-over and genetic recombination
during meiosis
B. independent assortment of homologous
chromosomes during meiosis
C. the process of fertilization (the fusion of
two gametes)
D. gametogenesis
E. All the above are correct
16. Chiasmata
indicate the sites on the chromosomes where ________________.
A. DNA replication was initiated
B. spindle fiber begins to form in the
cytoplasm
C. mutations have damaged the DNA and cause
changes in the traits that the chromosomes carry
D. the homologues separates
E. crossing over has occurred
17. Because of the _______________ alignment of
homologous chromosomes during Metaphase I, nuclei (or in gametes) at the end of
meiosis can wind up with __________________ mixes of maternal (mother) and
paternal (father) chromosomes.
A. unvarying; different
B. unvarying; duplicate
C. random; different
D. random; duplicate
E. rapid; identical
18. Gametogenesis occurs in special organs in
human beings. What is the name of the organ in which the egg or ovum forms?
A. testis
B. ovary
C. vagina
D. uterus
E. GPO (gamete-producing organ)
19. Mitochondria and other cytoplasmic
components of a cell are __________________.
A. produced
by activity of the nucleus
B. paternally
inherited
C. maternally
inherited
D. paternally
and maternally inherited equally
E. donated
to a cell by a virus
20. Garden peas have 14 chromosomes. At the END of meiosis in peas, each cell has
_______ chromosomes and each chomosome has ____ chromatid(s).
A. 7; one
B. 7; two
C. 14; one
D. 14; two
E. 28; one