Mock Final Exam

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Pregunta 1 de 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 __.

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 2 de 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?

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 3 de 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?

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 4 de 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?

Selecciona una de las siguientes respuestas posibles:

Kilogram
Kilometer
Milligram
Millimeter

Explicación

Pregunta 5 de 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?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 6 de 71

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

Selecciona una de las siguientes respuestas posibles:

Control Group
Experimental Group
results
data

Explicación

Pregunta 7 de 71

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

Selecciona una de las siguientes respuestas posibles:

controls
constants
data
results

Explicación

Pregunta 8 de 71

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

Selecciona una de las siguientes respuestas posibles:

conclusion
hypothesis
materials
problem

Explicación

Pregunta 9 de 71

Which of the following responds to the manipulated variable?

Selecciona una de las siguientes respuestas posibles:

independent variable
dependent variable
control
constant

Explicación

Pregunta 10 de 71

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

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 11 de 71

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

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 12 de 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?

Selecciona una de las siguientes respuestas posibles:

Elephant
Kangaroo
Lion
Snake

Explicación

Pregunta 13 de 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?

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 14 de 71

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

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 15 de 71

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

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 16 de 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.

Selecciona una de las siguientes respuestas posibles:

0.05%
5%
20%
90%

Explicación

Pregunta 17 de 71

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

Selecciona una de las siguientes respuestas posibles:

Carbohydrates
Fatty acids
Nucleic acids
Proteins

Explicación

Pregunta 18 de 71

How do enzymes speed up chemical reactions?

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 19 de 71

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

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 20 de 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?

Selecciona una de las siguientes respuestas posibles:

Covalent
Hydrogen
Intermolecular
Ionic

Explicación

Pregunta 21 de 71

Which substance releases H+ into a solution?

Selecciona una de las siguientes respuestas posibles:

Acid
Base
Alkaline
Buffer

Explicación

Pregunta 22 de 71

This substance releases -OH into a solution?

Selecciona una de las siguientes respuestas posibles:

Base
Buffer
Acid
Water

Explicación

Pregunta 23 de 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?

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 24 de 71

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

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 25 de 71

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

Selecciona una de las siguientes respuestas posibles:

Osmosis
Endocytosis
Exocytosis
Cell membrane

Explicación

Pregunta 26 de 71

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

Selecciona una de las siguientes respuestas posibles:

true
false

Explicación

Pregunta 27 de 71

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

Selecciona una de las siguientes respuestas posibles:

active transport
passive transport

Explicación

Pregunta 28 de 71

A form of passive transport that uses transport proteins.

Selecciona una de las siguientes respuestas posibles:

simple diffusion
facilitated diffusion
endocytosis
exocytosis

Explicación

Pregunta 29 de 71

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

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 30 de 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?

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 31 de 71

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

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 32 de 71

A cell will __________________ in a hypotonic solution.

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 33 de 71

How does a cell maintain homeostasis?

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 34 de 71

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

Selecciona una de las siguientes respuestas posibles:

NADH and ATP
Pyruvate and ATP
Pyruvate and NADH
Pyruvate

Explicación

Pregunta 35 de 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?

Selecciona una de las siguientes respuestas posibles:

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.

Explicación

Pregunta 36 de 71

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

Selecciona una de las siguientes respuestas posibles:

Cell wall
Chloroplast
DNA
Ribosome

Explicación

Pregunta 37 de 71

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

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 38 de 71

Sorts, packages, and distributes proteins.

Selecciona una de las siguientes respuestas posibles:

Smooth endoplasmic reticulum
Rough endoplasmic reticulum
Golgi apparatus
Lysosomes

Explicación

Pregunta 39 de 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.

Selecciona una de las siguientes respuestas posibles:

Chloroplast
Lysosomes
Mitochondria
Vacuoles

Explicación

Pregunta 40 de 71

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

Selecciona una de las siguientes respuestas posibles:

Plant cell
Animal cell
Bacteria cell

Explicación

Pregunta 41 de 71

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

Selecciona una de las siguientes respuestas posibles:

Mitochondria
Chloroplast
Cell membrane
Vacuoles

Explicación

Pregunta 42 de 71

Convert sunlight into energy via photosynthesis.

Selecciona una de las siguientes respuestas posibles:

Mitochondria
Chloroplast
Cell membrane
Vacuoles

Explicación

Pregunta 43 de 71

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

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 44 de 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.

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 45 de 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.

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 46 de 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?

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 47 de 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.

Selecciona una de las siguientes respuestas posibles:

AA or Aa
AA
Aa
aa

Explicación

Pregunta 48 de 71

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

Selecciona una de las siguientes respuestas posibles:

Carrier
Heterozygous
Homozygous dominant
Homozygous recessive

Explicación

Pregunta 49 de 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?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 50 de 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.

Selecciona una de las siguientes respuestas posibles:

organism 1
organism 2
organism 3
organism 4

Explicación

Pregunta 51 de 71

Which of the following figures represents bone tissue?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 52 de 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?

Selecciona una de las siguientes respuestas posibles:

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.

Explicación

Pregunta 53 de 71

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

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 54 de 71

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

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 55 de 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?

Selecciona una de las siguientes respuestas posibles:

Species A
Species C
Species D
Species E

Explicación

Pregunta 56 de 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:

Selecciona una de las siguientes respuestas posibles:

virus
protist
fungus
bacteria

Explicación

Pregunta 57 de 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?

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 58 de 71

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

Selecciona una de las siguientes respuestas posibles:

Animalia
Fungi
Plantae
Protista

Explicación

Pregunta 59 de 71

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

Selecciona una de las siguientes respuestas posibles:

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.

Explicación

Pregunta 60 de 71

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

Selecciona una de las siguientes respuestas posibles:

Endocrine
Nervous
Reproductive
Respiratory

Explicación

Pregunta 61 de 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?

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 62 de 71

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

Selecciona una de las siguientes respuestas posibles:

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.

Explicación

Pregunta 63 de 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.

Selecciona una de las siguientes respuestas posibles:

Mutualism only
Mutualism and commensalism
Mutualism and predation
Mutualism and parasitism

Explicación

Pregunta 64 de 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?

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 65 de 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?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 66 de 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.

Selecciona una de las siguientes respuestas posibles:

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.

Explicación

Pregunta 67 de 71

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

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 68 de 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?

Selecciona una de las siguientes respuestas posibles:

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.

Explicación

Pregunta 69 de 71

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

Selecciona una de las siguientes respuestas posibles:

Pike
Perch
Dragonfly larvae
Mosquito larvae

Explicación

Pregunta 70 de 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?

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 71 de 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.

Selecciona una de las siguientes respuestas posibles:

Dragonfly
Millipede
Sea star
Slug

Explicación

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	Creado por Jessica Dewald hace más de 5 años

9th grade Biology Test sobre Mock Final Exam, creado por Jessica Dewald el 16/12/2018.

Mock Final Exam

Pregunta 1 de 71

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 2 de 71

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 3 de 71

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 4 de 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?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 5 de 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?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 6 de 71

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

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 7 de 71

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

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Explicación

Pregunta 8 de 71

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

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Explicación

Pregunta 9 de 71

Which of the following responds to the manipulated variable?

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Pregunta 10 de 71

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

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Explicación

Pregunta 11 de 71

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

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Explicación

Pregunta 12 de 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?

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Pregunta 13 de 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?

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Explicación

Pregunta 14 de 71

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

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Explicación

Pregunta 15 de 71

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

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Pregunta 16 de 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.

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Explicación

Pregunta 17 de 71

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

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Explicación

Pregunta 18 de 71

How do enzymes speed up chemical reactions?

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Explicación

Pregunta 19 de 71

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

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Explicación

Pregunta 20 de 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?

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Explicación

Pregunta 21 de 71