Name: 
 

BIS 10V / NEM 10V 2011 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. 
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
 

 2. 
Sexual reproduction
a.
leads to uniform characteristics in a population.
b.
results in new combinations of genetic traits.
c.
produces genetic clones.
d.
requires less tissue differentiation than asexual reproduction.
e.
produces genetic clones and requires less tissue differentiation than asexual reproduction.
 

 3. 
Each cell is able to maintain a constant internal environment. This is called
a.
metabolism.
b.
homeostasis.
c.
physiology.
d.
adaptation.
e.
evolution.
 

 4. 
Hydrogen ions (H+) are _____
a.
the basis of pH values
b.
unbound protons
c.
targets of certain buffers
d.
dissolved in blood
e.
all of the above
 

 5. 
Surface water travels
a.
toward the lowest point possible
b.
toward the highest point possible
c.
toward both the highest and lowest points
d.
None of the above
 

 6. 
Proteins associated with DNA in eukaryotes are
a.
repressors.
b.
tryptophans.
c.
histones.
d.
nucleosomes.
e.
operons.
 

 7. 
Holdfasts, gas-filled floats, and a thick leathery surface are found in species of
a.
red algae.
b.
brown algae.
c.
bryophytes.
d.
green algae.
e.
blue-green algae.
 

 8. 
Water droplets form on the outside of a cold soda can because
a.
the can "sweats" water.
b.
static electricity attracts water to the can.
c.
sonic vibrations shake the water from the inside of the can to the outside.
d.
None of the above.
 

 9. 
Nucleotides are the building blocks for
a.
proteins.
b.
steroids.
c.
lipids.
d.
ATP, NAD+, and FAD.
e.
carbohydrates.
 

 10. 
The chromosomes have arrived at opposite poles during
a.
anaphase.
b.
metaphase.
c.
interphase.
d.
prophase.
e.
telophase.
 

 11. 
In a chromosome, a _____ is a constricted region with attachment sites for microtubules.
a.
chromatid
b.
cell plate
c.
centromere
d.
cleavage
 

 12. 
A gene that produces multiple effects is called
a.
a multiple allele.
b.
an autosome.
c.
an epistatic gene.
d.
a pleiotropic gene.
e.
an incompletely dominant gene.
 

 13. 
Single-celled photosynthetic protistans, which include most euglenoids, chrysophytes, and dinoflagellates, are memebers of ______, the "pastures" of most aquatic habitats.
a.
zooplankton
b.
red algae
c.
brown algae
d.
phytoplankton
 

 14. 
The Creosote Bush is typical of which biome
a.
Rain Forest
b.
Desert
c.
Grassland
d.
Tundra
e.
Shrubland
 

 15. 
Endospores
a.
are resistant bodies.
b.
enable some bacteria to survive for long periods of time.
c.
may contain concentrated poisons.
d.
all of these
 

 16. 
Jellyfishes, sea anemones, and their relatives have _____  symmetry, and their cells form _____ .
a.
radial; mesoderm
b.
bilateral; tissues
c.
radial; tissues
d.
bilateral; mesoderm
 

 17. 
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
 

 18. 
Four of the five answers listed below are characteristics of water. Select the exception.
a.
stabilizes temperature
b.
common solvent
c.
cohesion and surface tension
d.
produces salts
e.
changes shape of hydrophilic and hydrophobic substances
 

 19. 
The chromosomes and genes are actually replicated during
a.
anaphase.
b.
metaphase.
c.
interphase.
d.
prophase.
e.
telophase.
 

 20. 
Which substance is the most common in cells?
a.
carbohydrates
b.
salts and minerals
c.
proteins
d.
fats
e.
water
 

 21. 
All atoms of an element have the same number of
a.
ions.
b.
protons.
c.
neutrons.
d.
electrons.
e.
protons and neutrons.
 

 22. 
Duplicated chromosomes move away from their homologue and end up at the opposite spindle pole during _____ .
a.
prophase I
b.
prophase II
c.
anaphase I
d.
anaphase II
 

 23. 
A pH of 10 is how many times as basic as a pH of 7?
a.
2
b.
3
c.
10
d.
100
e.
1,000
 

 24. 
Saprobes are
a.
cytoplasmic organelles.
b.
metabolic by-products.
c.
organisms that feed on dead material.
d.
parasites of plants.
e.
an evolutionary dead end.
 

 25. 
These are the primary cellular sites for the recapture of energy from carbohydrates.
a.
Golgi bodies
b.
ribosomes
c.
mitochondria
d.
lysosomes
e.
endoplasmic reticula
 

 26. 
Parasitic fungi obtain nutrients from _____ .
a.
tissues of living hosts
b.
nonlliving organic matter
c.
only living animals
d.
none of the above
 

 27. 
Bacteria reproduce by _____ .
a.
mitosis
b.
meiosis
c.
prokaryotic fission
d.
longitudinal fission
 

 28. 
What cell organelle is found in plant cells but NOT in animal cells?
a.
nucleoplasm
b.
cell wall
c.
plasma membrane
d.
Golgi body
e.
microtubules
 

 29. 
If tall (D) is dominant to dwarf (d), and two homozygous varieties DD and dd are crossed, then what kind of offspring will be produced?
a.
all intermediate forms
b.
all tall
c.
all dwarf
d.
1/2 tall, 1/2 dwarf
e.
3/4 tall, 1/4 dwarf
 

 30. 
The spindle apparatus becomes visible during
a.
anaphase.
b.
metaphase.
c.
interphase.
d.
prophase.
e.
telophase.
 

 31. 
An individual water molecule shows _____
a.
polarity
b.
hydrogen-bonding capacity
c.
notable head resistance
d.
spherelike hydration
e.
a and b
 

 32. 
DNA replication occurs
a.
between the gap phases of interphase.
b.
immediately before prophase of mitosis.
c.
during prophase of mitosis.
d.
during prophase of meiosis.
e.
at any time during cell division.
 

 33. 
Cells with two sets of genetic information are described by the term
a.
polyploid.
b.
diploid.
c.
triploid.
d.
haploid.
e.
tetraploid.
 

 34. 
Imperfect fungi are those that lack (or do not show)
a.
spores.
b.
sexual reproduction.
c.
cross walls within hyphae.
d.
rhizoids.
 

 35. 
Pleiotropic genes
a.
act on secondary sexual characteristics.
b.
influence more than one aspect of phenotype.
c.
are additive.
d.
produce lethal effects when homozygous.
e.
none of these
 

 36. 
Prokaryotic cells do NOT have
a.
nucleoid regions.
b.
membrane bound nuclei.
c.
cytoplasm.
d.
plasma membrane.
e.
DNA.
 

 37. 
The usual F2 phenotypic ratio of a dihybrid cross is
a.
1:1.
b.
2:1.
c.
9:3:3:1.
d.
1:2:1.
e.
3:1.
 

 38. 
Chromatids that are attached at the centromere are called what kind of chromatids?
a.
mother
b.
daughter
c.
sister
d.
programmed
e.
either mother or daughter but not sister nor programmed
 

 39. 
The adjective that best describes homeostasis in living organisms is
a.
rigid.
b.
biological.
c.
dynamic.
d.
chemical.
e.
physical.
 

 40. 
Electrons carry (a) ________ charge.
a.
positive
b.
negative
c.
zero
 

 41. 
A heterozygote has a _____ for the trait being studied.
a.
pair of identical alleles
b.
pair of nonidentical alleles
c.
haploid condition, in genetic terms
d.
a and c
 

 42. 
Genetic variation gives rise to variation in _____ traits.
a.
morphological
b.
physiological
c.
behavioral
d.
all of the above
 

 43. 
Maternal and paternal chromosomes are shuffled most during
a.
anaphase II.
b.
metaphase I.
c.
prophase I.
d.
telophase II.
e.
interphase.
 

 44. 
If short hair (L) is dominant to long hair (l), animals LL and Ll have the same
a.
parents.
b.
genotypes.
c.
phenotypes.
d.
alleles.
e.
genes.
 

 45. 
Sperm are formed directly from the maturation of
a.
sperm mother cells.
b.
spermatids.
c.
spermatagonial cells.
d.
primary spermatocytes.
e.
secondary spermatocytes.
 

 46. 
The sequence of amino acids is the __________ structure of proteins.
a.
primary
b.
secondary
c.
tertiary
d.
quaternary
e.
stereo
 

 47. 
Bilateral symmetry is characteristic of
a.
cnidarians.
b.
sponges.
c.
jellyfish.
d.
flatworms.
 

 48. 
Plasma membranes are characterized by the presence of
a.
triglycerides.
b.
phospholipids.
c.
unsaturated fats.
d.
steroid hormones.
e.
fatty acids.
 

 49. 
Flowering Dogwood is most likely to be found in
a.
Temperate Deciduous Forest
b.
Coniferous Forest
c.
Shrubland
d.
Grassland
e.
Tundra
 

 50. 
Experiments like those first performed by Stanley Miller in 1953 demonstrated that
a.
DNA forms readily and reproduces itself.
b.
many of the lipids, carbohydrates, proteins, and nucleotides required for life can form under abiotic conditions.
c.
complete, functioning prokaryotic cells are formed after approximately three months.
d.
a lipid-protein film will eventually be formed by thermal convection.
e.
all of these
 



 
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