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BIS 10V / NEM 10V 2014 Midterm


BIS10V / NEM10V 2014 Midterm

Instructions:

Put your name and student ID number on both the test and the scantron.

On your scantron, bubble in your student ID number. Bubble in the test version.

Only use pencil (spare ones up front). Erase stray  marks fully. No stray marks in the row of black lines.

On your scantron, identify the letter of the choice that best completes the statement or answers the question.

If you think there is an error on the test, make a note on your test (not the scantron) and tell the instructor on the way out.

Double check your scantron for "double bubbles" or missing answers. There is no penalty for guessing.
 

 1. 
If the electronegativity of an atom is relatively high, when this atom forms bonds with other atoms with lower electronegativities, what does it tend to do?
a.
It pulls electrons closer to itself, away from the other atom.
b.
It shares electrons equally.
c.
It donates electrons to the other atom.
 

 2. 
These are sometimes referred to as rough or smooth, depending on the structure.
a.
Golgi bodies
b.
ribosomes
c.
mitochondria
d.
lysosomes
e.
endoplasmic reticula
 

 3. 
In which type of bond has an electron been donated from one atom to another?
a.
Hydrogen
b.
Nonpolar covalent
c.
Polar covalent
d.
Ionic
 

 4. 
If R is dominant to r, the offspring of the cross of RR with rr will
a.
be homozygous.
b.
display the same phenotype as the RR parent.
c.
display the same phenotype as the rr parent.
d.
have the same genotype as the RR parent.
e.
have the same genotype as the rr parent.
 

 5. 
The secondary structure of proteins can be
a.
helical.
b.
sheetlike.
c.
globular.
d.
the sequence of amino acids.
e.
both helical and sheetlike.
 

 6. 
If two genes are almost always found in the same gamete, they are
a.
located close together on the same chromosome.
b.
located on nonhomologous chromosomes.
c.
located far apart on the same chromosome.
d.
found on the sex chromosome.
 

 7. 
Water is an excellent solvent because
a.
it forms spheres of hydration around charged substances and can form hydrogen bonds with many nonpolar substances.
b.
it has a high heat of fusion.
c.
of its cohesive properties.
d.
it is a liquid at room temperature.
e.
all of these
 

 8. 
When water _________ it is called snow and/or rain.
a.
condenses
b.
precipitates
c.
pontificates
d.
subjugates
 

 9. 
Crossing over is one of the most important events in meiosis because
a.
it produces new arrays of alleles on chromosomes.
b.
homologous chromosomes must be separated into different daughter cells.
c.
the number of chromosomes allotted to each daughter cell must be halved.
d.
homologous chromatids must be separated into different daughter cells.
e.
all of these
 

 10. 
What are the base-pairing rules for DNA?
a.
A-G, T-C
b.
A-C, T-G
c.
A-U, C-G
d.
A-T, G-C
 

 11. 
In which organelle are steroid hormones synthesized?
a.
The rough endoplasmic reticulum
b.
The smooth endoplasmic reticulum
c.
The mitochondrion
d.
The nucleus
e.
The ribosome
 

 12. 
An operator most typically governs _____ .
a.
bacterial genes
b.
a eukaryotic gene
c.
genes of all types
d.
DNA replication
 

 13. 
Mendel found that pea plants expressing a recessive trait
a.
were pure-breeding.
b.
appeared only in the first generation of a cross between two pure-breeding plants expressing contrasting forms of a trait.
c.
disappeared after the second generation.
d.
could be produced only if one of the parents expressed the recessive trait.
e.
none of these
 

 14. 
Mitosis and cytoplasmic division function in _____ .
a.
asexual reproduction of single-celled eukaryotes
b.
growth, tissue repair, and sometimes asexual reproduction in many multicelled eukaryotes
c.
gamete formation in prokaryotes
d.
both a and b
 

 15. 
These contain enzymes and are the main organelles of intracellular digestion.
a.
Golgi bodies
b.
ribosomes
c.
mitochondria
d.
lysosomes
e.
endoplasmic reticula
 

 16. 
Each DNA strand has a backbone that consists of alternating
a.
purines and pyrimidines.
b.
nitrogen-containing bases.
c.
hydrogen bonds.
d.
sugar and phosphate molecules.
e.
amines and purines.
 

 17. 
Crossing over
a.
generally results in binary fission.
b.
involves nucleoli.
c.
involves breakages and exchanges being made between sister chromatids.
d.
alters the composition of chromosomes and results in new combinations of alleles being channeled into the daughter cells.
e.
all of these
 

 18. 
A fully functional molecule of hemoglobin is a good example of _____ protein structure.
a.
primary
b.
secondary
c.
tertiary
d.
quaternary
e.
none of these
 

 19. 
The nitrogenous base found in DNA but not in RNA is
a.
adenine.
b.
cytosine.
c.
guanine.
d.
uracil.
e.
thymine.
 

 20. 
The portion of the DNA molecule that is translated is composed of
a.
introns.
b.
anticodons.
c.
exons.
d.
transcriptons.
e.
both exons and transcriptons but not introns or anticodons.
 

 21. 
Multiple effects of a single gene is known as
a.
expressivity.
b.
penetrance.
c.
codominance.
d.
pleiotropy.
e.
multiple alleles.
 

 22. 
Sperm are formed directly from the maturation of
a.
sperm mother cells.
b.
spermatids.
c.
spermatagonial cells.
d.
primary spermatocytes.
e.
secondary spermatocytes.
 

 23. 
The sequence of amino acids is the __________ structure of proteins.
a.
primary
b.
secondary
c.
tertiary
d.
quaternary
e.
stereo
 

 24. 
Anticodons pair with _____.
a.
mRNA codons
b.
DNA codons
c.
tRNA anticodons
d.
amino acids
 

 25. 
Cells with two sets of genetic information are described by the term
a.
polyploid.
b.
diploid.
c.
triploid.
d.
haploid.
e.
tetraploid.
 

 26. 
A reaction of an acid and a base will produce water and
a.
a buffer.
b.
a salt.
c.
gas.
d.
solid precipitate.
e.
solute.
 

 27. 
DNA replication requires
a.
free nucleotides
b.
new hydrogen bonds
c.
many enzymes
d.
all of the above
 

 28. 
Bluestem Grasses are most likely to be found in
a.
Temperate Deciduous Forest
b.
Coniferous Forest
c.
Rain Forest
d.
Grassland
e.
Tundra
 

 29. 
_____ are to proteins as _____ are to nucleic acids.
a.
Sugars; lipids
b.
Sugars; proteins
c.
Amino acids; hydrogen bonds
d.
Amino acids; nucleotides
 

 30. 
In mitosis, if a parent cell has 16 chromosomes, each daughter cell will have how many chromosomes?
a.
64
b.
32
c.
16
d.
8
e.
4
 

 31. 
Which is the smallest portion of a substance that retains the properties of an element?
a.
atom
b.
compound
c.
ion
d.
molecule
e.
mixture
 

 32. 
Cell part responsible for maintaining cell shape, internal organization, and cell movements is the
a.
vesicle.
b.
nucleus.
c.
endoplasmic reticulum.
d.
cytoskeleton.
e.
ribosome.
 

 33. 
Which of the following adult tissues or organs arises from the mesoderm?
a.
Sense organs
b.
Nervous system
c.
Circulatory system
d.
Respiratory tract
e.
Digestive tract
 

 34. 
The adjective that best describes homeostasis in living organisms is
a.
rigid.
b.
biological.
c.
dynamic.
d.
chemical.
e.
physical.
 

 35. 
Prokaryotic cells do NOT have
a.
nucleoid regions.
b.
membrane bound nuclei.
c.
cytoplasm.
d.
plasma membrane.
e.
DNA.
 

 36. 
Under favorable conditions, during which phase of meiosis will the chromosomes appear as packets of four chromatids?
a.
anaphase I
b.
telophase II
c.
anaphase II
d.
prophase I
e.
metaphase II
 

 37. 
Which is not a nucleotide base in DNA?
a.
adenine
b.
guanine
c.
uracil
d.
thymine
e.
cytosine
 

 38. 
Hormones may ______ gene transcription in target cells.
a.
promote
b.
inhibit
c.
participate in
d.
both a and b
 

 39. 
The laboratory technique used to separate the DNA fragments produced by automated DNA sequencing is
a.
the polymerase chain reaction.
b.
gel electrophoresis.
c.
ultracentrifugation.
d.
electron microscopy.
e.
fluorescence microscopy.
 

 40. 
When DNA replication begins, _____.
a.
the two DNA strands unwind from each other
b.
the two DNA strands condense for base transfers
c.
two DNA molecules bond
d.
old strands move to find new strands
 

 41. 
Mendel's principle of independent assortment states that
a.
one allele is always dominant to another.
b.
hereditary units from the male and female parents are blended in the offspring.
c.
the two hereditary units that influence a certain trait segregate during gamete formation.
d.
each hereditary unit is inherited separately from other hereditary units.
e.
all of these
 

 42. 
The observable traits of an organism are its _____ .
a.
phenotype
b.
sociobiology
c.
genotype
d.
pedigree
 

 43. 
Darwin saw that populations of Galapagos finches _____ .
a.
show variation in traits
b.
resemble birds in South America
c.
are adapted to different island habitats
d.
all of the above
 

 44. 
Which does NOT produce variation?
a.
crossing over
b.
random alignment of chromosomes during meiosis
c.
asexual reproduction
d.
genetic recombination of alleles
e.
sexual reproduction
 

 45. 
The nucleus of an atom contains
a.
neutrons and protons.
b.
neutrons and electrons.
c.
protons and electrons.
d.
protons only.
e.
neutrons only.
 

 46. 
In incomplete dominance
a.
one allele is not dominant to another allele.
b.
the genotype can be determined by the phenotype.
c.
the heterozygote is somewhat intermediate to the two homozygotes.
d.
the intermediate phenotype may be the result of enzyme insufficiency.
e.
all of these
 

 47. 
If short hair (L) is dominant to long hair (l), then to determine the genotype of a short-haired animal it should be crossed with
a.
LL.
b.
Ll.
c.
ll.
d.
all of these
e.
none of these
 

 48. 
James Watson and Francis Crick
a.
established the double-stranded nature of DNA.
b.
established the principle of base pairing.
c.
explained how DNA's structure permitted it to be replicated.
d.
proposed the concept of the double-helix.
e.
all of these
 

 49. 
The location of a gene on a chromosome is its
a.
centromere.
b.
locus.
c.
autosome.
d.
allele.
e.
none of these
 

 50. 
The instructions for growth and development are in
a.
proteins.
b.
carbohydrates
c.
DNA
d.
energy
e.
homeostasis
 



 
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