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WorksheetsHB Semester 1 Review
Total questions: 77
Worksheet time: 39mins
Name
Class
Date
1.
The type of bond that forms between water molecules.
a)
Hydrogen bond
b)
Polar covalent bond
c)
Nonpolar covalent bond
d)
Ionic bond
2.
The type of bond found between atoms of hydrophobic molecules.
a)
Hydrogen bond
b)
Polar covalent bond
c)
Nonpolar covalent bond
d)
Ionic bond
3.
Amino acids are to proteins as __________ are to ___________.
a)
Polymers; monomers
b)
Starches; sugars
c)
Covalent bonds; Ionic bonds
d)
Monomers; polymers
4.
An example of a structural carbohydrate is
a)
Glucose
b)
Sucrose
c)
Starch
d)
Cellulose
5.
If a solution has a pH of 4.0 this means it
a)
Has a higher concentration of OH- than H+
b)
Is basic
c)
Is acidic
d)
Has equal concentrations of H+ and OH-
6.
Which of the following molecules functions as an energy store?
a)
Protein
b)
RNA
c)
Chitin
d)
Starch
7.
If a protein loses its shape, it becomes
a)
Denatured
b)
Activated
c)
Coiled
d)
Ionized
8.
A nucleotide is made up of three parts:
a)
Sugar, phosphate group, & protein
b)
Phosphate group, protein, & lipid
c)
Nitrogenous base, phosphate group, & lipid
d)
Sugar, phosphate group, & nitrogenous base
9.
Surface tension occurs in water because water __________
a)
Is adhesive
b)
Is cohesive
c)
Has a high specific heat
d)
Has a high heat of vaporization
10.
An example of a lipid is:
a)
Starch
b)
ATP
c)
Fat
d)
Protein
11.
A protein that acts as a catalyst is called a(n):
a)
Lipid
b)
Activator
c)
Enzyme
d)
Reactant
12.
A structure found in eukaryotes that stabilizes the cytoplasm:
a)
Mitochondria
b)
Cytoskeleton
c)
Nucleus
d)
Centrioles
13.
What are the functions of the plasma membrane?
a)
Regulating what molecules leave/enter the cell
b)
Maintaining homeostasis
c)
Regulating biochemical reactions
d)
(All of these are functions of the plasma membrane)
14.
The mitochondria is the control center of the cell.
a)
True
b)
False
15.
Identify this organelle.
a)
Golgi apparatus
b)
nucleus
c)
smooth endoplasmic recticulum
d)
rough endoplasmic recticulum
16.
The golgi apparatus sorts and repackages proteins into vesicles.
a)
True
b)
False
17.
What is the function of the smooth endoplasmic recticulum?
a)
lipid synthesis
b)
protein synthesis
c)
RNA synthesis
d)
DNA synthesis
18.
What is one way a plant cell can be distinguished from an animal cell?
a)
plant cells have a cell wall, animal cells do not
b)
plank cells lack lysomes
c)
plant cells lack a plasma membrane
d)
animal cells have a nucleus, plant cells do not
19.
The ribosome is the site of:
a)
replication
b)
transcription
c)
translation
d)
cellular respiration
20.
Facilitated diffusion moves molecules from [low] to [high] and therefore requires energy.
a)
True
b)
False
21.
The solute outside of the cell is higher than inside the cell. The solution outside of the cell is considered _____, and water will move _____.
a)
hypertonic; out of the cell
b)
hypotonic; out of the cell
c)
isotonic; equally in both directions
d)
hypertonic; into the cell
22.
A yellow pea plant (Aa) is allowed to self-pollinate. The yellow allele (A) is dominant to green (a). What proportion of the offspring will be yellow?
a)
1/4
b)
2/4
c)
3/4
d)
4/4
23.
A frog has two different alleles for the eye color trait. The frog would be considered:
a)
homozygous dominant
b)
homozygous recessive
c)
heterozygous
24.
How many copies of a recessive allele are needed for its trait to be expressed in the phenotype?
a)
1
b)
2
25.
Two individuals who are heterozygous for both the C and S genes are bred. What will be the phenotypic ratio of their offspring?
a)
1:1:1:1
b)
1:4
c)
9:3:3:1
d)
9:4:5:1
26.
What are the sex chromosomes for a male?
a)
XX
b)
XY
27.
This Punnet Square shows an example of color blind inheritance. What chromosome is the colorblind allele linked to?
a)
X
b)
Y
c)
B
d)
b
28.
The petals on this flower are both red and white. This would be an example of:
a)
complete dominance (Mendelian)
b)
incomplete dominance
c)
codominance
29.
This gray chicken had a black-feathered father, and a white-feathered mother. This would be an example of:
a)
complete dominance (Mendelian)
b)
incomplete dominance
c)
codominance
30.
You have a red-flowered plant. The red flower color allele is dominant to the white flower color. To determine the genotype of your plant, you would need to perform a:
a)
dihybrid cross
b)
monohybrid cross
c)
test-cross
d)
back-cross
31.
The possible gametes donated by an individual with the genotype AABb would be: AB, Ab, aB and ab.
a)
True
b)
False
32.
A human cell undergoes meiosis. How many chromosomes will be in each of the resulting daughter cells?
a)
2
b)
4
c)
23
d)
46
33.
A human cell undergoes meiosis. How many daughter cells are formed?
a)
1
b)
2
c)
3
d)
4
34.
If meiosis starts with a diploid (2n) cell, the resulting daughter cells are ___(n).
a)
Haploid
b)
Diploid
c)
There's no way of knowing
35.
When your skin cells reproduce after you scrape your knee, they are doing:
a)
Mitosis
b)
Meiosis
c)
Both
d)
Neither
36.
Crossing over occurs during:
a)
Mitosis
b)
Meiosis
c)
Both
d)
Neither
37.
What is the advantage of crossing over?
a)
There is none-it has a negative effect on cells.
b)
It increase genetic diversity
c)
It ensures the daughter cells from meiosis are identical to the parent cell.
38.
Meiosis is used in asexual reproduction.
a)
True
b)
False
39.
Meiosis produces gametes (sperm, and egg). Therefore, the type of cells that undergo meiosis are termed:
a)
Somatic
b)
Gametic
c)
Triploid
40.
What stage of meiosis is pictured here?
a)
prophase 1
b)
anaphase 1
c)
metaphase 1
d)
telophase 1
41.
The purpose of meiosis is:
a)
growth and repair
b)
reproductioin
42.
90 percent of a cell's time in the normal cellular cycle may be spent in this phase.
a)
Interphase
b)
Prophase
c)
metaphase
d)
anaphase
43.
In this phase of mitosis, the chromatin condenses into discrete chromosomes. The nuclear envelope breaks down and spindles form at opposite poles of the cell.
a)
Interphase
b)
prophase
c)
anaphase
d)
metaphase
44.
A cell with 32 chromosomes undergoes mitosis. The resulting daughter cells will each have ____ chromosomes.
a)
32
b)
16
c)
64
d)
the answer cannot be determined
45.
What phase of mitosis is the pictured cell in?
a)
prophase
b)
metaphase
c)
anaphase
d)
telophase
46.
What phase of mitosis is the pictured cell in?
a)
prophase
b)
metaphase
c)
anaphase
d)
telophase
47.
Intraspecific competition occurs between individuals of different species.
a)
True
b)
False
48.
Which of the following relationships is NOT a symbiotic relationship:
a)
parasitism
b)
commensalism
c)
mutualism
d)
predator-prey
49.
In this symbiotic relationship, both the clownfish and anemone benefit. This relationship is specifically one of:
a)
parasitism
b)
commensalism
c)
mutualism
d)
herbivory
50.
In Yellowstone Park, any changes in the wolf population has a profound effect on the community structure. Therefore, the wolves are considered to be:
a)
not crucial to the ecosystem
b)
keystone species
c)
important prey items
d)
foundation species
51.
An organism that needs to consume other organisms to obtain energy would be called a(n):
a)
autotroph
b)
heterotroph
c)
producer
52.
The sea urchin's diet consists of photosynthetic kelps, so the urchin would be classified as a(n):
a)
autotroph
b)
primary consumer
c)
secondary consumer
d)
tertiary consumer
53.
In the case of this food chain, the snake would be the:
a)
producer
b)
primary consumer
c)
secondary consumer
d)
tertiary consumer
54.
This diagram is an example of a food web.
a)
True
b)
False
55.
If the producers in this example produce 100kCal of energy, how much of that energy will be available to the secondary consumers?
a)
100 kCal
b)
10 kCal
c)
1 kCal
d)
0.1 kCal
56.
The image illustrates what evolutionary concept?
a)
embryological similarities
b)
variation among species
c)
Vestigial structures
d)
homologous structures
57.
Whic of the following is not a primary componenet of the Theory of Evolution by Natural Selection?
a)
Competition for food and space
b)
Variation among species
c)
Inheritance of characteristics
d)
differential survival and reproduction
58.
A structure that seems to serve no purpose in an organism is called:
a)
homologous
b)
Vestigal
c)
Dichotomous
d)
Fossilized
59.
In science, theories are:
a)
an educated guess
b)
a known fact
c)
Absolute and unchangeable
d)
the best explanation for a set of data or observations
60.
A group of mice becomes separated by the formation of a river. Over time, the northern mice became smaller and whiter, while the southern mice became larger and browner. This is an example of:
a)
divergence
b)
Homology
c)
Gigantificatio
d)
Industrial melanism
61.
Larmarke is to “Inheritance of Aquired Characteristics” as Darwin is to
a)
“Divergence of related species”
b)
“Homologous structures”
c)
“Evolution by natural selection”
d)
“Speciation by common descent”
62.
Any long-term variation that can help an organism survive in its environment is called a(n):
a)
adaptatio
b)
Characteristic
c)
Competition
d)
Vestigial structure
63.
The strongest evidence for change over a long period of time comes from:
a)
DNA
b)
Fossils
c)
Embryo studies
d)
Direct observation of living species
64.
The dog breeds we have today are developed through:
a)
natural selection
b)
artificial selection (selective breeding)
c)
sexual selection
d)
Acquired selection
65.
The finches on the Galapagos island were similar in form except for variations of their beaks. Darwin observed that theses variations were useful for:
a)
attracting a mate
b)
defending territory
c)
Building nests
d)
Gathering food
66.
A crucial part of Darwin’s theory is the concept of “use and disuse”, meaning that used structures increase in size, while unused structures shrink.
a)
Tru
b)
False
67.
Individuals evolve.
a)
True
b)
False
68.
Dolphins and sharks are not related, and yet have evolved similar body types due to
a)
divergent evolutio
b)
convergent evolution
c)
Coevolutio
d)
Adaptive radiation
69.
Based on this cladogram, the two most closely related organisms are the:
a)
swordfish and frog
b)
frog and alligator
c)
Alligator and T. Rex
d)
Swordfish and T. Rex
70.
A common ancestor for the frog, alligator, and T. Rex, would be represented with the letter
a)
A
b)
B
c)
C
71.
Which fo the following is NOT a mechanism of evolution
a)
Natural selection
b)
mutiatin & variation
c)
Gene flow
d)
Microevolution
72.
In years of drought, the mean beak size fo the Galapagos finches increased. What type of selection occurred?
a)
Directiona
b)
Disruptive
c)
Stabilizing
73.
Cacti with an intermediate number of spines are less susceptible to herbivory and paradise. Over time, there were less individuals with MANY spines, and SCARCE spinces. What type of selection occurred?
a)
Directional
b)
Disruptive
c)
Stabilizing
74.
White and purple butterflies are camouflaged within their habitat, while the blue butterflies are not. Over time, there were less blue individuals, and more of the camouflaged phenotypes. What type of selection occurred?
a)
Directiona
b)
Disruptive
c)
Stabilizin
75.
Genetic drift is the random fluctuations in allele frequencies over time.
a)
True
b)
False
76.
Which of the following is not a type of isolation that would lead to sympatric speciatio
a)
geographic isolation
b)
temporal isolation
c)
Ecological isolation
d)
Behavioral isolation
77.
You try to pollinate a tulip plant by a daisy plant, but were unable to yield a hybrid. What type of postmating isolation would explain this?
a)
Gemete incompatibility
b)
hybrid inviability
c)
Hybrid infertility
d)
Allopathic speciation
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