Question 1

What is an effect of gene flow?

Accepted Answer

A)  an increase in the variety of alleles within the gene pool of a population 
B)  No change in the variety or frequencies of alleles in a population. 
C)  a decrease in the genetic diversity of a population 
D)  a decrease in the variety of alleles within the gene pool of a population 
E)  an increase in the number of individuals within a population 
A)  an increase in the variety of alleles within the gene pool of a population 
B)  No change in the variety or frequencies of alleles in a population. 
C)  a decrease in the genetic diversity of a population 
D)  a decrease in the variety of alleles within the gene pool of a population 
E)  an increase in the number of individuals within a population

Question 2

Foresters girdle trees in a forest to decrease tree density.Girdling removes the ring of outer and inner bark,including the phloem,around the trunk of the tree and below the branches.Why do girdled trees die?

Accepted Answer

A)  Carbon dioxide intake required for the production of sugar is prevented. 
B)  Chlorophyll is not spread among the leaves sufficiently for food production. 
C)  Minerals required for cell function can no longer be distributed to the leaves. 
D)  Water can no longer be transported from the roots to all the parts of the plant. 
E)  Sugars can no longer be moved throughout the plant to the cells that need them. 
A)  Carbon dioxide intake required for the production of sugar is prevented. 
B)  Chlorophyll is not spread among the leaves sufficiently for food production. 
C)  Minerals required for cell function can no longer be distributed to the leaves. 
D)  Water can no longer be transported from the roots to all the parts of the plant. 
E)  Sugars can no longer be moved throughout the plant to the cells that need them.

Question 3

What must happen to macromolecules before they can be absorbed by the body?

Accepted Answer

A)  They must be assembled into chains with coenzymes. 
B)  They must be chemically modified with cofactors. 
C)  They must be digested into their constituent subunits. 
D)  They must be transformed into essential nutrients. 
E)  They must be free of all covalent chemical bonds. 
A)  They must be assembled into chains with coenzymes. 
B)  They must be chemically modified with cofactors. 
C)  They must be digested into their constituent subunits. 
D)  They must be transformed into essential nutrients. 
E)  They must be free of all covalent chemical bonds.

Question 4

What changes can humans make that can reduce their impact on the amount of carbon dioxide in the atmosphere? Select the TWO answers that are correct.

Accepted Answer

A)  Consume only ethically sourced,organic produce,avoiding pesticides and genetically modified organisms. 
B)  Increase the use of natural resources such as coal and timber for industry and economic development. 
C)  Conserve electricity and rely more on power sources with less carbon impact,such as solar and wind energy. 
D)  Limit the use of gasoline for transportation by using more fuel-efficient vehicles,carpools,and public transportation. 
E)  Switch from electricity generated by dams that capture the energy of water as it flows downhill to energy provided by petroleum. 
A)  Consume only ethically sourced,organic produce,avoiding pesticides and genetically modified organisms. 
B)  Increase the use of natural resources such as coal and timber for industry and economic development. 
C)  Conserve electricity and rely more on power sources with less carbon impact,such as solar and wind energy. 
D)  Limit the use of gasoline for transportation by using more fuel-efficient vehicles,carpools,and public transportation. 
E)  Switch from electricity generated by dams that capture the energy of water as it flows downhill to energy provided by petroleum.

Question 5

Which animals do NOT display bilateral symmetry at some point in their life cycle? Select the TWO answers that are correct.

Accepted Answer

A)  starfish 
B)  earthworms 
C)  sponges 
D)  jellyfish 
E)  flatworms 
A)  starfish 
B)  earthworms 
C)  sponges 
D)  jellyfish 
E)  flatworms

Question 6

What is the result of binary fission?

Accepted Answer

A)  four daughter cells with half the genetic material of the parent cell 
B)  four daughter cells with genetic material identical to that of the parent cell 
C)  two daughter cells with genetic material identical to that of the parent cell 
D)  one daughter cell with genetic material identical to that of the parent cell 
E)  two daughter cells with half the genetic material of the parent cell 
A)  four daughter cells with half the genetic material of the parent cell 
B)  four daughter cells with genetic material identical to that of the parent cell 
C)  two daughter cells with genetic material identical to that of the parent cell 
D)  one daughter cell with genetic material identical to that of the parent cell 
E)  two daughter cells with half the genetic material of the parent cell

Question 7

Assume a phenotype is determined by one gene with a dominant allele and a recessive allele.If one parent is homozygous dominant (AA)and the other parent is homozygous recessive (aa),what genotype(s)might their offspring have?

Accepted Answer

A)  Aa,aa 
B)  Aa 
C)  AA,Aa 
D)  AA,Aa,aa 
E)  AA,aa 
A)  Aa,aa 
B)  Aa 
C)  AA,Aa 
D)  AA,Aa,aa 
E)  AA,aa

Question 8

Select methods of seed dispersal.Select the TWO answers that are correct.

Accepted Answer

A)  through feces from consumed fruits 
B)  with tiny hooks that stick into fur 
C)  through plant migration 
D)  on particles of soil or sand 
E)  through sun-generated power 
A)  through feces from consumed fruits 
B)  with tiny hooks that stick into fur 
C)  through plant migration 
D)  on particles of soil or sand 
E)  through sun-generated power

Question 9

Why is it more energetically efficient to be a vegetarian than to eat meat?

Accepted Answer

A)  Plants contain more energy than meat since they are at the lowest trophic level. 
B)  A person burns less energy digesting plants than digesting meat. 
C)  It takes less effort to gather plants to eat than to prepare and cook meat. 
D)  No energy is lost to another animal's metabolism when a person eats plants. 
E)  It is easier to extract energy from plants than from animal sources. 
A)  Plants contain more energy than meat since they are at the lowest trophic level. 
B)  A person burns less energy digesting plants than digesting meat. 
C)  It takes less effort to gather plants to eat than to prepare and cook meat. 
D)  No energy is lost to another animal's metabolism when a person eats plants. 
E)  It is easier to extract energy from plants than from animal sources.

Question 10

Which trait is NOT a functional characteristic of all living things?

Accepted Answer

A)  sense and respond to stimuli 
B)  protect self from predators 
C)  grow and reproduce 
D)  maintain homeostasis 
E)  acquire and consume energy 
A)  sense and respond to stimuli 
B)  protect self from predators 
C)  grow and reproduce 
D)  maintain homeostasis 
E)  acquire and consume energy

Question 11

How long will it take for 75% of the carbon-14 atoms in a biological sample to decay to nitrogen-14?

Accepted Answer

A)  8595 years 
B)  2865 years 
C)  5730 years 
D)  11,460 years 
E)  1433 years 
A)  8595 years 
B)  2865 years 
C)  5730 years 
D)  11,460 years 
E)  1433 years

Question 12

Why is the sun the ultimate source of energy for all carnivores?

Accepted Answer

A)  When energy from the sun heats water,animals at all trophic levels can absorb the energy contained in the water each time they take a drink. 
B)  Carnivores are able to absorb heat from the sun during the daytime and use it to increase their metabolic rate,allowing them to hunt more effectively. 
C)  Some of the energy produced during photosynthesis passes from one trophic level to the next as herbivores eat producers and are then eaten by carnivores. 
D)  Producers eat plants that contain solar energy gathered during photosynthesis,and the energy passes to carnivores when they eat the producers. 
E)  As consumers,carnivores get some of their energy directly from the sun through photosynthesis and the rest by hunting and eating other animals. 
A)  When energy from the sun heats water,animals at all trophic levels can absorb the energy contained in the water each time they take a drink. 
B)  Carnivores are able to absorb heat from the sun during the daytime and use it to increase their metabolic rate,allowing them to hunt more effectively. 
C)  Some of the energy produced during photosynthesis passes from one trophic level to the next as herbivores eat producers and are then eaten by carnivores. 
D)  Producers eat plants that contain solar energy gathered during photosynthesis,and the energy passes to carnivores when they eat the producers. 
E)  As consumers,carnivores get some of their energy directly from the sun through photosynthesis and the rest by hunting and eating other animals.

Question 13

Select the statements that correctly describe the role of B and T cells.Select the TWO answers that are correct.

Accepted Answer

A)  B cells form the lymph nodes. 
B)  B cells stimulate T cells. 
C)  T cells destroy infected cells. 
D)  B cells produce antibodies. 
E)  T cells make up the thymus. 
A)  B cells form the lymph nodes. 
B)  B cells stimulate T cells. 
C)  T cells destroy infected cells. 
D)  B cells produce antibodies. 
E)  T cells make up the thymus.

Question 14

How is the reproduction of bryophytes similar to that of ferns?

Accepted Answer

A)  Reproduction relies on water so that sperm can swim to the egg. 
B)  Reproduction occurs through the production of spores. 
C)  Reproduction occurs through the production of exposed seeds. 
D)  Reproduction involves flowers and seed-containing fruit. 
E)  Reproduction is not dependent on the presence of water. 
A)  Reproduction relies on water so that sperm can swim to the egg. 
B)  Reproduction occurs through the production of spores. 
C)  Reproduction occurs through the production of exposed seeds. 
D)  Reproduction involves flowers and seed-containing fruit. 
E)  Reproduction is not dependent on the presence of water.

Question 15

Which of the following are radioactive decay processes used to determine the age of samples? Select the TWO answers that are correct.

Accepted Answer

A)  lead-206 to bismuth-166 
B)  argon-40 to potassium-40 
C)  carbon-14 to carbon-12 
D)  carbon-14 to nitrogen-14 
E)  potassium-40 to argon-40 
A)  lead-206 to bismuth-166 
B)  argon-40 to potassium-40 
C)  carbon-14 to carbon-12 
D)  carbon-14 to nitrogen-14 
E)  potassium-40 to argon-40

Question 16

Why do plants have more than one type of pigment in their leaves?

Accepted Answer

A)  One set of pigments is active in the light-gathering phase of photosynthesis and another set makes the leaves appear green. 
B)  Certain pigments are active at different temperatures,making photosynthesis possible in warm and cool weather. 
C)  The various pigments respond to different wavelengths of light,allowing plants to absorb more of the available light. 
D)  Some of the pigments absorb light energy and others gather and process carbon dioxide into sugars. 
E)  Each pigment is active during a different time of day,giving the plant more time to photosynthesize. 
A)  One set of pigments is active in the light-gathering phase of photosynthesis and another set makes the leaves appear green. 
B)  Certain pigments are active at different temperatures,making photosynthesis possible in warm and cool weather. 
C)  The various pigments respond to different wavelengths of light,allowing plants to absorb more of the available light. 
D)  Some of the pigments absorb light energy and others gather and process carbon dioxide into sugars. 
E)  Each pigment is active during a different time of day,giving the plant more time to photosynthesize.

Question 17

Can males be carriers of an X-linked trait?

Accepted Answer

A)  Yes,because the Y chromosome also codes for the trait 
B)  No,because males have two copies of the X chromosome 
C)  No,because females do not pass X-linked traits to male offspring 
D)  Yes,because males have one copy of the X chromosome 
E)  No,because males have only one copy of the X chromosome 
A)  Yes,because the Y chromosome also codes for the trait 
B)  No,because males have two copies of the X chromosome 
C)  No,because females do not pass X-linked traits to male offspring 
D)  Yes,because males have one copy of the X chromosome 
E)  No,because males have only one copy of the X chromosome

Question 18

What bonds in an ATP molecule store the chemical energy used by cells?

Accepted Answer

A)  the bonds between adenine and ribose 
B)  the bonds between ribose and phosphate 
C)  the bonds between phosphates 
D)  the bonds between adenines 
E)  the bonds between riboses 
A)  the bonds between adenine and ribose 
B)  the bonds between ribose and phosphate 
C)  the bonds between phosphates 
D)  the bonds between adenines 
E)  the bonds between riboses

Question 19

Which substances have an alkaline pH? Select the TWO answers that are correct.

Accepted Answer

A)  coffee 
B)  battery acid 
C)  orange juice 
D)  drain cleaner 
E)  baking soda 
A)  coffee 
B)  battery acid 
C)  orange juice 
D)  drain cleaner 
E)  baking soda

Exam 33: A Range of Biology

What is an effect of gene flow?

Foresters girdle trees in a forest to decrease tree density.Girdling removes the ring of outer and inner bark,including the phloem,around the trunk of the tree and below the branches.Why do girdled trees die?

What must happen to macromolecules before they can be absorbed by the body?

What changes can humans make that can reduce their impact on the amount of carbon dioxide in the atmosphere? Select the TWO answers that are correct.

Which animals do NOT display bilateral symmetry at some point in their life cycle? Select the TWO answers that are correct.

What is the result of binary fission?

Assume a phenotype is determined by one gene with a dominant allele and a recessive allele.If one parent is homozygous dominant (AA)and the other parent is homozygous recessive (aa),what genotype(s)might their offspring have?

Select methods of seed dispersal.Select the TWO answers that are correct.

Why is it more energetically efficient to be a vegetarian than to eat meat?

Which trait is NOT a functional characteristic of all living things?

How long will it take for 75% of the carbon-14 atoms in a biological sample to decay to nitrogen-14?

Why is the sun the ultimate source of energy for all carnivores?

Select the statements that correctly describe the role of B and T cells.Select the TWO answers that are correct.

How is the reproduction of bryophytes similar to that of ferns?

Which of the following are radioactive decay processes used to determine the age of samples? Select the TWO answers that are correct.

Why do plants have more than one type of pigment in their leaves?

Can males be carriers of an X-linked trait?

What bonds in an ATP molecule store the chemical energy used by cells?

Which substances have an alkaline pH? Select the TWO answers that are correct.

Process of Science

Chemistry of Life

Cell Structure and Function

Nutrition, Enzymes, Metabolism

Energy and Photosynthesis

Dietary Energy and Cellular Respiration

Genes to Proteins

DNA Structure and Replication

Cell Cycle and Cell Differentiation

Mutations and Cancer

Simple Inheritance and Meiosis

Complex Inheritance

Natural Selection and Adaptation

Nonadaptive Evolution and Speciation

Evidence for Evolution

Life on Earth

Prokaryotic Diversity

Eukaryotic Diversity

Human Evolution

Population Ecology

Community Ecology

Ecosystem Ecology

Sustainability

Plant Growth and Reproduction

Plant Physiology

Overview of Physiology

Digestive System

Cardiovascular System

Respiratory System

Central Nervous System

Reproductive System

Immune System

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