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WorksheetsBiology Keystone Review 2
Total questions: 40
Worksheet time: 47mins
Name
Class
Date
1.
Which of the following conclusions can be drawn from this graph?
a)
The optimum pH of the enzyme is 6.6.
b)
The optimum pH of the enzyme is 5.8
c)
The enzyme’s activity increases as pH increases 5.0 to 9.0
d)
The enzyme’s activity is greater around pH of 8.0 .
2.
What type of macromolecule are enzymes?
a)
Protein
b)
Carbohydrate
c)
Lipid
d)
Nucleic Acid
3.
Enzymes need certain environmental conditions in order to function properly. What happens when enzymes are heated to a high temperature?
a)
they die
b)
they denature
c)
they change their amino acid sequence
d)
they work better
4.
The part of the enzyme that the substrate bonds to is called the _____.
a)
active site
b)
activation energy
c)
bond site
d)
peptide bond
5.
A group of students measured a ten-square-meter section of a pond ecosystem and recorded observations. Which statement is a testable hypothesis?
a)
The frogs living in the pond represent a population
b)
Water is an abiotic component in the pond ecosystem
c)
If the fish are given more food, then they will be happier
d)
If the frogs are startled, then they will jump into the water
6.
A researcher observing an ecosystem describes the amount of sunlight, precipitation, and type of soil present. Which factors is the researcher most likely describing?
a)
biotic factors in a forest
b)
biotic factors in a tundra
c)
abiotic factors in a prairie
d)
abiotic factors in an ocean
7.
A species of snapping turtles has a tongue that resembles a worm. The tongue is used to attract small fish. Which best describes the interaction between the fish and the snapping turtle?
a)
predation
b)
symbiosis
c)
parasitism
d)
competition
8.
Which statement correctly describes how nitrogen in the soil returns to the atmosphere?
a)
Soil bacteria convert
nitrates into nitrogen gas
b)
Decomposers directly
convert ammonium into nitrogen gas
c)
Plants assimilate
nitrites and convert them into nitrogen gas
d)
Nitrogen-fixing
bacteria in plant roots convert nitrates into nitrogen gas
9.
Which sequence correctly describes the flow of energy between organisms in the marine food web?
a)
from seals to
penguins to krill
b)
from
whales to krill to small fish
c)
from
sea birds to seals to penguins
d)
from
small fish to penguins to seals
10.
A farmer observed that an increase in a field’s soil nitrogen content was followed by an increase in producer productivity. What does this observation most likely indicate about the relationship between nitrogen and the producers in the field?
a)
Nitrogen was a biotic factor
b)
Nitrogen was a
limiting factor
c)
Nitrogen became a
surplus resource
d)
Nitrogen became a
selection pressure
11.
Which of the following is an abiotic factor?
a)
human
b)
bird
c)
grass
d)
rock
12.
the diagram suggessts...
a)
energy flows from
secondary consumers to primary consumers in an
ecosystem
b)
tertiary consumers
are the ultimate source of energy in an ecosystem
c)
there are more
tertiary consumers than producers in an energy
pyramid
d)
producers are the
foundation of all energy pyramids
13.
Often, organisms compete with each other for a food source. Which of the following pairs of organisms compete with each other for food?
a)
mice and rabbits
b)
squirrels and owls
c)
rabbits and green plants
d)
mice and owls
14.
The Earth's carbon cycle consists of the flow, cycling, and recycling of all of the carbon on the Earth. Every living organism's composition includes the element carbon. How does carbon become part of living organisms?
a)
Producers take in carbon directly from the soil through their roots, and consumers eat the producers
b)
Producers take in carbon dioxide from the air, and consumers eat the producers
c)
Carbon is a part of sunlight and enters through the skins of all organisms
d)
Consumers take in carbon dioxide from the air, and producers eat the consumers
15.
What is a phenotype?
a)
The expression of a trait; physical appearance.
b)
refers to the genetic makeup of an individual
c)
An organism that has the same genes for a trait (ex. TT or tt)
d)
the passing of traits from parent to offspring
16.
What does heterozygous mean?
a)
An organism that has the same genes for a trait (TT or tt)
b)
An organism that has different genes for a trait (Tt)
c)
When neither gene is fully dominant; offspring is a mixture of both
d)
the different forms of a trait (hair color--> brown, blonde, red
17.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
18.
R=round seed
r=wrinkled seed.
Cross a homozygous round with a wrinkled. Which statement predicts the results?
r=wrinkled seed.
Cross a homozygous round with a wrinkled. Which statement predicts the results?
a)
offspring will be Rr
b)
offspring will be RR
c)
round seeds will be recessive to wrinkled
d)
Wrinkled will be observed in half of offspring
19.
A human usually has _____ total chromosomes.
a)
6
b)
22
c)
4
d)
46
20.
This type of inheritance pattern is a MIXTURE of both traits.
a)
incomplete dominance
b)
co-dominance
c)
complete dominance
d)
recessive pattern
21.
This type of inheritance pattern shows BOTH traits in possible offspring
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
dominant pattern
22.
What type of chromosomal abnormality do people with Down Syndrome have?
a)
trisomy 21
b)
monosomy 21
c)
recessive inheritance
d)
dominant inheritance
24.
In a pedigree, what shape represents a male?
a)
circle
b)
square
c)
triangle
d)
diamond
24.
In a pedigree, what shape represents a male?
a)
circle
b)
square
c)
triangle
d)
diamond
25.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
26.
Which of the characteristics is a lion least likely to pass on to its offspring?
a)
fur color
b)
length of tail
c)
scars on leg
d)
body size
27.
Photograph of chromosomes grouped in ordered pairs
a)
pedigree
b)
Punnett Square
c)
Venn Diagram
d)
Karyotype
28.
Chromosome that is not a sex chromosome
a)
Chromosome
b)
Autosome
c)
Sex Chromosome
d)
Homologous pair
29.
Original: ATC CAT
Mutation: ATC GCAT
What mutation occurred?
Mutation: ATC GCAT
What mutation occurred?
a)
deletion
b)
insertion
c)
silent
d)
transverse
30.
Releases oxygen
a)
photosynthesis
b)
cellular respiration
c)
both
31.
releases carbon dioxide
a)
phtosynthesis
b)
cellular respiration
c)
both
32.
produces sugar
a)
cellular respiration
b)
photosynthesis
c)
both
33.
uses sugar
a)
cellular respiration
b)
photosynthesis
c)
both
34.
During this cycle, the products fro on process serve as the starting materials for the other. Which of the following materials correspond(s) to box number 3?
a)
sunlight
b)
carbon dioxide and water
c)
ATP (energy) and heat
d)
oxygen and glucose
35.
A protein in a cell membrane changed its shape to move sodium and potassium ions against their concentration gradients. Which molecule was most likely used by the protein as an energy source?
a)
ATP
b)
ADP
c)
catalase
d)
amylase
36.
tendency of molecules of the same kind to stick to one another
a)
cohesion
b)
adhesion
c)
solution
d)
polar molecule
37.
What property of water helps to moderate earth's temperature?
a)
adhesion
b)
cohesion
c)
Specific heat capacity
d)
density of ice
38.
what are two types of passive transport?
a)
endo and exocytosis
b)
cookies and milk
c)
active and passive
d)
Osmosis and diffusion
39.
The cell membrane is made mostly of
a)
phospholipid monolayer and proteins
b)
phospholipid bilayer and proteins
c)
proteins and carbohydrates bilayer
d)
triglycerides and carbohydrates
40.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
carbon dioxide + water --> oxygen + glucose
b)
carbon dioxide + glucose + water --> oxygen
c)
oxygen + water --> carbon dioxide + glucose
d)
glucose+ oxygen ---> water + carbon dioxide
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