Mock Final Exam

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Question 1 of 71

Morgan hypothesizes that the activity of amylase, an enzyme that catalyses the breakdown of starch, will be greater at 37C than at 25C. She prepares 2 tubes: Tube 1 and Tube 2. Morgan adds 2 g of starch and 1 mL of an enzyme suspension to Tube 1 and incubates it at 25*C for 20 min. To accurately test her hypothesis, Morgan should add 2 g of starch and 1 mL of the enzyme suspension to Tube 2 and incubate it at _ for __.

Select one of the following:

25*C; 20 min
37*C; 20 min
25*C; 10 min
37*C; 10 min

Explanation

Question 2 of 71

Ebola virus is a potentially deadly virus in the blood which causes Ebola fever. Ebola virus is often spread by monkeys. Scientists used 2 groups of monkey kidney cells in an experiment to confirm the first human case of Ebola fever. The scientists inoculated cells in Group 1 with samples of the Ebola virus taken from a human with Ebola fever. They did not inoculate the cells in Group 2. What was the control group in the experiment?

Select one of the following:

The Ebola virus
All of the monkey kidney cells
Monkey kidney cells in Group 1
Monkey kidney cells in group 2

Explanation

Question 3 of 71

Sunee and Jamila grow 2 distinct strains of E. coli bacteria following appropriate lab procedures. In Experiment 1, they use a new culture of Strain X and a 30-day old culture of Strain Y. In Experiment 2, they use a new culture of Strain Y and a 30-day old culture of Strain X. Sunee and Jamila measure the number of bacterial colonies and record the data in the graphs below. What is the most accurate conclusion about the growth rate of the bacteria?

Select one of the following:

Strain X grows faster than Strain Y regardless of the culture's age
Strain Y grows faster than Strain X regardless of the culture's age
The 30-day old culture grows faster regardless of the strain
The new culture grows faster regardless of the strain

Explanation

Question 4 of 71

Chan wants to determine how much the mass of fungus growing on a nutrient agar plate changes over an 8 hr period. What is the most appropriate unit of measure for him to use?

Select one of the following:

Kilogram
Kilometer
Milligram
Millimeter

Explanation

Question 5 of 71

A researcher counted the number of eggs a single fruit fly laid in 24 hrs for 5 days and recorded the findings in the table below. What is the average number of eggs laid per day over the 5 days?

Select one of the following:

Explanation

Question 6 of 71

The part of the experiment that does not contain the independent variable. Used for comparison.

Select one of the following:

Control Group
Experimental Group
results
data

Explanation

Question 7 of 71

What are all the things that are kept the same in an experiment and are not used for comparison?

Select one of the following:

controls
constants
data
results

Explanation

Question 8 of 71

What is an if....then statement that predicts the outcome of an experiment or how the Independent variable effects the dependent variable?

Select one of the following:

conclusion
hypothesis
materials
problem

Explanation

Question 9 of 71

Which of the following responds to the manipulated variable?

Select one of the following:

independent variable
dependent variable
control
constant

Explanation

Question 10 of 71

Given the following list of student test grades: 80, 90, 100, 65, 78, 84. What is their approximate average test grade overall?

Select one of the following:

Explanation

Question 11 of 71

At what depth does plant X start decreasing bubble production in figure 5?

Select one of the following:

Explanation

Question 12 of 71

The graph represents the average fastest speed of 5 animals recorded in one study. Based on the graph, which species is approximately 1/3 as fast as the cheetah?

Select one of the following:

Elephant
Kangaroo
Lion
Snake

Explanation

Question 13 of 71

After learning about viruses in Biology class, Sam decides to have his cat vaccinated against feline leukemia virus. According to the cell theory, are viruses, such as feline leukemia, considered living things?

Select one of the following:

Yes, because they can reproduce
Yes, because they are composed of cells
No, because they cannot adapt to their environment
No, because they are not composed of cells

Explanation

Question 14 of 71

What is the highest amount of bubble production from plant X from figure 5?

Select one of the following:

Explanation

Question 15 of 71

What is the correct order of organization of all living things from simplest to most complex?

Select one of the following:

Atom, cell, organ, organ system, organism, molecule, tissue
organism, organ system, organ, tissue, cell, molecule, atom
Atom, molecule, cell, tissue, organ, organism, organ system
Atom, molecule, cell, tissue, organ, organ system, organism

Explanation

Question 16 of 71

A scientist burned 100 g of rice until only 5 g of inorganic material remained. Approximate the percentage of inorganic material in the original 100 g rice sample.

Select one of the following:

0.05%
5%
20%
90%

Explanation

Question 17 of 71

Papain, an enzyme in papaya, breaks down polymers composed of amino acids. Which of the following substances does papain break down?

Select one of the following:

Carbohydrates
Fatty acids
Nucleic acids
Proteins

Explanation

Question 18 of 71

How do enzymes speed up chemical reactions?

Select one of the following:

By reducing activation energy
By reducing energy produced by the reaction
By increasing activation energy
By increasing energy produced by the reaction

Explanation

Question 19 of 71

What is the maximum number of covalent bonds that can form between a single carbon atom and 1 or more hydrogen atoms?

Select one of the following:

Explanation

Question 20 of 71

In the glycerol molecule below, there is a hydroxyl group (OH) bound to each of the 3 carbon atoms. The bond between the oxygen atom of a hydroxyl group and a carbon atom in glycerol is best classified as what type of bond?

Select one of the following:

Covalent
Hydrogen
Intermolecular
Ionic

Explanation

Question 21 of 71

Which substance releases H+ into a solution?

Select one of the following:

Acid
Base
Alkaline
Buffer

Explanation

Question 22 of 71

This substance releases -OH into a solution?

Select one of the following:

Base
Buffer
Acid
Water

Explanation

Question 23 of 71

As part of an experiment, a student adds 10 mL of 5% hydrochloric acid solution to 100 mL of a non-buffered, colorless solution of sugar. What is the most likely result?

Select one of the following:

The concentration of hydroxide ions (OH-) will increase
The concentration of hydrogen ions (H+) will increase
The pH will not change
The pH will increase

Explanation

Question 24 of 71

Honey is composed mostly of glucose and fructose. What property of water explains why honey dissolves easily in water?

Select one of the following:

Water exhibits strong cohesion
Water has a high specific heat
Water is a polar molecule
Water is easily ionized

Explanation

Question 25 of 71

Movement of water molecules across a selectively permeable membrane from an area of higher water concentration to an area of lower water concentration.

Select one of the following:

Osmosis
Endocytosis
Exocytosis
Cell membrane

Explanation

Question 26 of 71

True or False. Eukaryotes have DNA enclosed in a Nucleus.

Select one of the following:

true
false

Explanation

Question 27 of 71

Which type of transport requires energy because it moves from an area of low concentration to an area of high concentration?

Select one of the following:

active transport
passive transport

Explanation

Question 28 of 71

A form of passive transport that uses transport proteins.

Select one of the following:

simple diffusion
facilitated diffusion
endocytosis
exocytosis

Explanation

Question 29 of 71

What trait of an ATP molecule enables it to store energy for use by cells?

Select one of the following:

Its small size
Its solubility in water
Its ability to form hydrogen bonds
Its phosphate-phosphate bond

Explanation

Question 30 of 71

The diagram below shows a cell membrane composed of a phospholipid bilayer with a channel protein. Each x represents the same type of molecule inside or outside the cell. Facilitated diffusion moves these molecules across the cell membrane. In what direction do these molecules (x) move and through with structure?

Select one of the following:

Into the cell through the channel protein
Into the cell through the phospholipid bilayer
Out of the cell through the channel protein
Out of the cell through the phospholipid bilayer

Explanation

Question 31 of 71

The diagrams below represent different stages of animal cell division. From start to finish, what is the correct order of the stages?

Select one of the following:

2, 4, 3, 1
2, 3, 4, 1
3, 2, 1, 4
3, 1, 2, 4

Explanation

Question 32 of 71

A cell will __________________ in a hypotonic solution.

Select one of the following:

swell and perhaps burst (lyse)
the size of the cell will not change
shrink
the size of the cell will change from large to small and from small to large

Explanation

Question 33 of 71

How does a cell maintain homeostasis?

Select one of the following:

Regulates what enters and leaves the cell
Protective barrier
Flexibility
Structure and support

Explanation

Question 34 of 71

The aerobic and anaerobic pathways of cellular respiration require which products of glycolysis?

Select one of the following:

NADH and ATP
Pyruvate and ATP
Pyruvate and NADH
Pyruvate

Explanation

Question 35 of 71

A paramecium lives in a relatively hypotonic environment. Which of these structures does the paramecium use to maintain homeostasis under these conditions, and how does it do so?

Select one of the following:

Contractile vacuole; by expelling water from the intracellular space into the extracellular space.
Contractile vacuole; by absorbing water from the extracellular space into the intracellular space.
Lysosome; by expelling water from the intracellular space into the extracellular space.
Lysosome; by absorbing water from the extracellular space into the intracellular space.

Explanation

Question 36 of 71

The presence of which of the following structures in a cell would indicate that the cell is a photosynthetic bacterium?

Select one of the following:

Cell wall
Chloroplast
DNA
Ribosome

Explanation

Question 37 of 71

An organelle found in a liver cell would best be identified as a lysosome if its primary function was which of the following?

Select one of the following:

Processing and packaging of cellular materials prior to export
Harvesting of light energy to produce carbohydrates
Detoxification of poisonous molecules within the cell
Digestion of macromolecules and old organelles

Explanation

Question 38 of 71

Sorts, packages, and distributes proteins.

Select one of the following:

Smooth endoplasmic reticulum
Rough endoplasmic reticulum
Golgi apparatus
Lysosomes

Explanation

Question 39 of 71

Filled with digestive enzymes that aid in the breakdown of lipids, carbohydrates, and proteins into smaller molecules that can be used by the rest of the cell.

Select one of the following:

Chloroplast
Lysosomes
Mitochondria
Vacuoles

Explanation

Question 40 of 71

Which of the following is an example of a prokaryotic cell?

Select one of the following:

Plant cell
Animal cell
Bacteria cell

Explanation

Question 41 of 71

Convert chemical energy stored in food into compounds that are more convenient for the cell to use.

Select one of the following:

Mitochondria
Chloroplast
Cell membrane
Vacuoles

Explanation

Question 42 of 71

Convert sunlight into energy via photosynthesis.

Select one of the following:

Mitochondria
Chloroplast
Cell membrane
Vacuoles

Explanation

Question 43 of 71

DNA molecules differ from RNA molecules in which of the following ways?

Select one of the following:

l and ll only
l and lll only
ll and lll only
l, ll, and lll

Explanation

Question 44 of 71

In fruit flies, red (R) eye color is dominant over white (r) eye color. Use the Punnett square method to determine the genotype ratio of the offspring that will be heterozygous from a cross between a heterozygous red eyed fly with a homozygous white eyed fly.

Select one of the following:

Explanation

Question 45 of 71

B = brown eyes b = blue eyes
What is true about these two brothers that have brown eyes? One has genotype BB the other Bb.

Select one of the following:

they have same phenotype and genotype
they have same phenotype but different genotypes
they have different genotypes and phenotypes
they have same genotype but different phenotypes

Explanation

Question 46 of 71

Suppose that in humans, a certain type of color blindness is a recessive, X-linked trait. The chromosomes and alleles associated with this type of color blindness are represented in the chart below. Which of these could NOT be a biological child of parents having the genotypes XBXb and XBY?

Select one of the following:

Color-blind son
Color-blind daughter
Daughter with normal color vision
Son with normal color vision

Explanation

Question 47 of 71

Alkaptonuria is a genetic disorder of protein metabolism. The disorder is determined by 2 alleles at 1 locus. Looking at the diagram below determine the genotype for individual 1.

Select one of the following:

AA or Aa
AA
Aa
aa

Explanation

Question 48 of 71

In humans, pigmented skin is dominant to non-pigmented skin (albinism). What is the genotype of an individual with albinism?

Select one of the following:

Carrier
Heterozygous
Homozygous dominant
Homozygous recessive

Explanation

Question 49 of 71

The mRNA sequence ACU codes for the amino acid Thr. A mutation occurs, and the resulting mRNA sequence is AUU. What amino acid will replace Thr?

Select one of the following:

Explanation

Question 50 of 71

Cytochrome C is a protein used in the electron transport chain. This table shows short sections of Cytochrome C's amino acid sequences in 5 organisms, using single letter abbreviations.
Use this data to determine which organism most likely shares the most recent common ancestor with humans.

Select one of the following:

organism 1
organism 2
organism 3
organism 4

Explanation

Question 51 of 71

Which of the following figures represents bone tissue?

Select one of the following:

Explanation

Question 52 of 71

In coho salmon, hooknose males are large and jack males are small. Average-sized males exist, but are rare. What statement best explains disruptive selection in male coho salmon?

Select one of the following:

Average-sized males reach the spawning ground first.
The scent of average-sized males makes them most attractive to females.
Hooknose males produce stronger sperm than jack males or average-sized males.
The relative size of hooknose males and jack males is an advantage during mating.

Explanation

Question 53 of 71

For biological evolution to occur by way of natural selection, the trait being selected for need NOT be:

Select one of the following:

be heritable
vary among individuals
increase an individual's life span
increase an individual's reproductive success

Explanation

Question 54 of 71

Much of the genetic diversity existing in modern multicellular organisms is most likely a result of:

Select one of the following:

DNA mutations originating in gametes
DNA mutations originating in somatic cells
Protein mutations originating in gametes
Protein mutations originating in somatic cells

Explanation

Question 55 of 71

The following cladogram illustrates the proposed evolutionary relationships of several extant species (A-E).
According to the cladogram below, which of the following species is most closely related to Species B?

Select one of the following:

Species A
Species C
Species D
Species E

Explanation

Question 56 of 71

Alec studied an unknown microscopic, unicellular organism and recorded his observations. He noted that the organism had DNA, ribosomes, and a cell wall, but no nucleus or other membrane-bound organelles. Based on Alec's observations, the organism would be best classified as a:

Select one of the following:

virus
protist
fungus
bacteria

Explanation

Question 57 of 71

An entomologist identified a new species of beetle in a South American rainforest. The beetle has all the features of the darkling beetle family Tenebrionidae and closely resembles other darkling beetles of the genus Tenebrio. What should the entomologist do next?

Select one of the following:

Give the beetle new genus and family names
Name the beetle after the species it is most similar to
Discard the beetle because it is not found in existing taxonomy
Place the beetle the same genus Tenebrio but give it a new species name

Explanation

Question 58 of 71

In what kingdom would scientists most likely classify a multicellular, non-motile, autotrophic, photosynthetic organism with a cell wall containing cellulose?

Select one of the following:

Animalia
Fungi
Plantae
Protista

Explanation

Question 59 of 71

Which of the following is most likely an example of an innate behavior?

Select one of the following:

A monkey washing its food in a stream after watching another monkey do the same.
A young coyote avoiding porcupines after the porcupine sticks the coyote with its quills.
A sea turtle hatchling orienting itself toward the ocean upon emerging from its underground nest.
A chimpanzee stacking boxes to reach bananas hanging from the ceiling of its enclosure.

Explanation

Question 60 of 71

Which physiological system includes the lungs, trachea, and pharynx?

Select one of the following:

Endocrine
Nervous
Reproductive
Respiratory

Explanation

Question 61 of 71

Marco grows algae in the presence of a substance that stops the light-independent reactions of photosynthesis. As a result, which molecules will the light-dependent reactions eventually stop producing?

Select one of the following:

ADP and NADP+
ADP and NADPH
ATP and NADP+
ATP and NADPH

Explanation

Question 62 of 71

Which of the following statements best describes how, in trees, water moves from the roots to the leaves?

Select one of the following:

Transpiration from the leaves pulls water upward.
Gravity continually pulls water and nutrients upward.
Xylem contracts and pushes water and nutrients upward.
Trees use energy from ATP to push water and nutrients upward.

Explanation

Question 63 of 71

An oxpecker is a bird that usually feeds on parasites on a rhinoceros's back. It occasionally picks scabs off the rhinoceros's back and drinks blood from the wounds. Describe the relationship(s) between the oxpecker and the rhinoceros.

Select one of the following:

Mutualism only
Mutualism and commensalism
Mutualism and predation
Mutualism and parasitism

Explanation

Question 64 of 71

When a new volcanic island forms, the pioneer species are the first species to successfully colonize the island. Which of the following characteristics would be the most ADVANTAGEOUS to a pioneer species colonizing this newly formed island?

Select one of the following:

Low dispersal rate
Low environmental tolerance
High reproductive rate
Short life span

Explanation

Question 65 of 71

Louise places 1 bacterium in a Petri dish at time 0. The population increases exponentially, doubling every hour, and there are no limiting factors. How many bacteria will be in the Petri dish after 6 hours?

Select one of the following:

Explanation

Question 66 of 71

Using the graph below, determine which statement most likely describes the relationship between the population of organisms and the resources available to the population.

Select one of the following:

There are adequate resources to support this stable population.
There are adequate resources to support this unstable population.
There are inadequate resources to support this stable population.
There are inadequate resources to support this unstable population.

Explanation

Question 67 of 71

Which energy pyramid accurately represents the amount of energy in a desert food chain including cactus, hawk, insect, and snake?

Select one of the following:

Explanation

Question 68 of 71

A biologist recorded the number of rabbits in a population over 30 generations. Which of the following statements best explains why the number of rabbits in the population dramatically decreased between Points A and B shortly after the 10th generation?

Select one of the following:

a new predator that feeds solely on the rabbits' main competitor was introduced into the rabbits' habitat.
a change in environmental conditions led to a significant increase in the amount of food available to the rabbits.
a fatal disease infected a large proportion of the rabbits in this population.
area farmers set traps for coyotes, the rabbits' main predator.

Explanation

Question 69 of 71

According to this simple lake food chain below, which of these organisms is a tertiary consumer?

Select one of the following:

Pike
Perch
Dragonfly larvae
Mosquito larvae

Explanation

Question 70 of 71

Assume that 10% of the energy absorbed by one trophic level is transferred to the next successive level and the same amount of energy is available at the primary producer level of each of the food chains below. How much energy would be available to humans in Food Chain 2 as compared to the energy available to humans in Food Chain 1?

Select one of the following:

10 times less energy
10 times more energy
100 times less energy
100 times more energy

Explanation

Question 71 of 71

An animal has these characteristics:
1. Many more than 8 jointed legs on a segmented body.
2. 2 pairs of legs attached to each body segment.
3. Lacks biting jaws
Use the key to determine what animal this is.

Select one of the following:

Dragonfly
Millipede
Sea star
Slug

Explanation

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	Created by Jessica Dewald almost 6 years ago

9th grade Biology Quiz on Mock Final Exam, created by Jessica Dewald on 16/12/2018.

Mock Final Exam

Question 1 of 71

Select one of the following:

Explanation

Question 2 of 71

Select one of the following:

Explanation

Question 3 of 71

Select one of the following:

Explanation

Question 4 of 71

Chan wants to determine how much the mass of fungus growing on a nutrient agar plate changes over an 8 hr period. What is the most appropriate unit of measure for him to use?

Select one of the following:

Explanation

Question 5 of 71

A researcher counted the number of eggs a single fruit fly laid in 24 hrs for 5 days and recorded the findings in the table below. What is the average number of eggs laid per day over the 5 days?

Select one of the following:

Explanation

Question 6 of 71

The part of the experiment that does not contain the independent variable. Used for comparison.

Select one of the following:

Explanation

Question 7 of 71

What are all the things that are kept the same in an experiment and are not used for comparison?

Select one of the following:

Explanation

Question 8 of 71

What is an if....then statement that predicts the outcome of an experiment or how the Independent variable effects the dependent variable?

Select one of the following:

Explanation

Question 9 of 71

Which of the following responds to the manipulated variable?

Select one of the following:

Explanation

Question 10 of 71

Given the following list of student test grades: 80, 90, 100, 65, 78, 84. What is their approximate average test grade overall?

Select one of the following:

Explanation

Question 11 of 71

At what depth does plant X start decreasing bubble production in figure 5?

Select one of the following:

Explanation

Question 12 of 71

The graph represents the average fastest speed of 5 animals recorded in one study. Based on the graph, which species is approximately 1/3 as fast as the cheetah?

Select one of the following:

Explanation

Question 13 of 71

After learning about viruses in Biology class, Sam decides to have his cat vaccinated against feline leukemia virus. According to the cell theory, are viruses, such as feline leukemia, considered living things?

Select one of the following:

Explanation

Question 14 of 71

What is the highest amount of bubble production from plant X from figure 5?

Select one of the following:

Explanation

Question 15 of 71

What is the correct order of organization of all living things from simplest to most complex?

Select one of the following:

Explanation

Question 16 of 71

A scientist burned 100 g of rice until only 5 g of inorganic material remained. Approximate the percentage of inorganic material in the original 100 g rice sample.

Select one of the following:

Explanation

Question 17 of 71

Papain, an enzyme in papaya, breaks down polymers composed of amino acids. Which of the following substances does papain break down?

Select one of the following:

Explanation

Question 18 of 71

How do enzymes speed up chemical reactions?

Select one of the following:

Explanation

Question 19 of 71

What is the maximum number of covalent bonds that can form between a single carbon atom and 1 or more hydrogen atoms?

Select one of the following:

Explanation

Question 20 of 71

In the glycerol molecule below, there is a hydroxyl group (OH) bound to each of the 3 carbon atoms. The bond between the oxygen atom of a hydroxyl group and a carbon atom in glycerol is best classified as what type of bond?

Select one of the following:

Explanation

Question 21 of 71