Question 1

During which phase of the cell cycle does the cytoplasm divide?

Accepted Answer

A)  G1 phase 
B)  S phase 
C)  mitosis 
D)  cytokinesis 
A)  G1 phase 
B)  S phase 
C)  mitosis 
D)  cytokinesis

Question 2

Tetraploid organisms have four copies of each chromosome instead of the two copies that humans have. How many copies of each chromosome end up in a gamete produced by a tetraploid organism?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 3

During which stage of meiosis do homologous chromosomes separate?

Accepted Answer

A)  meiosis I 
B)  meiosis II 
C)  interphase 
D)  cytokinesis 
A)  meiosis I 
B)  meiosis II 
C)  interphase 
D)  cytokinesis

Question 4

What are the different versions of the same gene?

Accepted Answer

A)  alleles 
B)  diploids 
C)  homologous chromosomes 
D)  sister chromatids 
A)  alleles 
B)  diploids 
C)  homologous chromosomes 
D)  sister chromatids

Question 5

Which feature is found in DNA?

Accepted Answer

A)  Adenine (
A)  forms a base pair with cytosine (
C) . 
B)  The backbone of each strand is composed of alternating sugar and phosphate groups. 
C)  Complementary strands are held together by ionic bonds. 
D)  DNA remains condensed in a short linear form both before and after cell division. 
A)  Adenine (
A)  forms a base pair with cytosine (
C) . 
B)  The backbone of each strand is composed of alternating sugar and phosphate groups. 
C)  Complementary strands are held together by ionic bonds. 
D)  DNA remains condensed in a short linear form both before and after cell division.

Question 6

Why do chromosomes resemble the letter X when viewed during metaphase?

Accepted Answer

A)  Because they all appear and function as X chromosomes at that stage. 
B)  Because there are two sister chromatids joined at a point in the middle (the centromere). 
C)  Because microtubules encircle and attach pairs of chromosomes to each other at the centromere. 
D)  Because each X-shaped structure is actually four chromosomes joined at the centromere. 
A)  Because they all appear and function as X chromosomes at that stage. 
B)  Because there are two sister chromatids joined at a point in the middle (the centromere). 
C)  Because microtubules encircle and attach pairs of chromosomes to each other at the centromere. 
D)  Because each X-shaped structure is actually four chromosomes joined at the centromere.

Question 7

What type of normal human cell contains 22 autosomes and a Y chromosome?

Accepted Answer

A)  egg cell 
B)  somatic cell of a female 
C)  somatic cell of a male 
D)  sperm cell 
A)  egg cell 
B)  somatic cell of a female 
C)  somatic cell of a male 
D)  sperm cell

Question 8

During which phase of mitosis do sister chromatids separate to opposite poles of the cell?

Accepted Answer

A)  prophase 
B)  anaphase 
C)  metaphase 
D)  telophase 
A)  prophase 
B)  anaphase 
C)  metaphase 
D)  telophase

Question 9

During which process would a cell plate form?

Accepted Answer

A)  cytokinesis in an animal cell 
B)  cytokinesis in a plant cell 
C)  mitosis in an animal cell 
D)  mitosis in a plant cell 
A)  cytokinesis in an animal cell 
B)  cytokinesis in a plant cell 
C)  mitosis in an animal cell 
D)  mitosis in a plant cell

Question 10

In a bacterial species, 20% of the bases in its DNA are C. What percent of the bases are G?

Accepted Answer

A)  80% 
B)  40% 
C)  20% 
D)  10% 
A)  80% 
B)  40% 
C)  20% 
D)  10%

Question 11

What are the two halves of a duplicated chromosome? (two words)

Accepted Answer

The answer of What are the two halves of a...

Question 12

What process occurs when cancer cells detach from tumors and spread to other parts of the body?

Accepted Answer

A)  angiogenesis 
B)  carcinogenesis 
C)  metastasis 
D)  mutagenesis 
A)  angiogenesis 
B)  carcinogenesis 
C)  metastasis 
D)  mutagenesis

Question 13

What is the relationship between proto-oncogenes and oncogenes?

Accepted Answer

A)  Oncogenes may develop into cancer-causing proto-oncogenes as a result of synergism. 
B)  Oncogenes prevent proto-oncogenes from encoding proteins for cell division. 
C)  Proto-oncogenes may develop into cancer-causing oncogenes as a result of mutations. 
D)  Proto-oncogenes allow oncogenes to encode proteins that prevent cell division. 
A)  Oncogenes may develop into cancer-causing proto-oncogenes as a result of synergism. 
B)  Oncogenes prevent proto-oncogenes from encoding proteins for cell division. 
C)  Proto-oncogenes may develop into cancer-causing oncogenes as a result of mutations. 
D)  Proto-oncogenes allow oncogenes to encode proteins that prevent cell division.

Question 14

What is the process by which cells of a malignant tumor can break away and start new cancers at distant locations?

Accepted Answer

The answer of What is the process by which cells...

Question 15

Which substance is not a known carcinogen?

Accepted Answer

A)  certain viruses 
B)  ultraviolet light 
C)  cigarette smoke 
D)  pet dander 
A)  certain viruses 
B)  ultraviolet light 
C)  cigarette smoke 
D)  pet dander

Question 16

During which phase of the cell cycle do most organelles duplicate?

Accepted Answer

A)  prophase of mitosis 
B)  telophase of mitosis 
C)  the S phase of interphase 
D)  the G1 phase of interphase 
A)  prophase of mitosis 
B)  telophase of mitosis 
C)  the S phase of interphase 
D)  the G1 phase of interphase

Question 17

-DNA polymerase moves along the length of the unwound helix, starting at the end of one strand and finishing at the end of the other strand. As shown in this figure, what is the result of this phenomenon?

Accepted Answer

A)  One resulting double strand of DNA is composed of new DNA, and one is composed of parental DNA. 
B)  Free nucleotides are added to one strand of parental DNA but not to the other. 
C)  The DNA polymerase moves toward the unwound helix on one strand of DNA and away from it on the other strand. 
D)  DNA polymerase is destroyed as it binds nucleotides to form each daughter strand. 
A)  One resulting double strand of DNA is composed of new DNA, and one is composed of parental DNA. 
B)  Free nucleotides are added to one strand of parental DNA but not to the other. 
C)  The DNA polymerase moves toward the unwound helix on one strand of DNA and away from it on the other strand. 
D)  DNA polymerase is destroyed as it binds nucleotides to form each daughter strand.

Question 18

-How do smoking and alcohol consumption affect cancer risk?

Accepted Answer

A)  Smoking combined with alcohol consumption results in greater cancer risk. 
B)  Drinking alcohol results in greater cancer risk than smoking. 
C)  Smoking or drinking alcohol result in similar cancer risk. 
D)  Smoking results in twice the cancer risk of drinking. 
A)  Smoking combined with alcohol consumption results in greater cancer risk. 
B)  Drinking alcohol results in greater cancer risk than smoking. 
C)  Smoking or drinking alcohol result in similar cancer risk. 
D)  Smoking results in twice the cancer risk of drinking.

Exam 6: Cancer: DNA Synthesis, Mitosis, and Meiosis

During which phase of the cell cycle does the cytoplasm divide?

Tetraploid organisms have four copies of each chromosome instead of the two copies that humans have. How many copies of each chromosome end up in a gamete produced by a tetraploid organism?

During which stage of meiosis do homologous chromosomes separate?

What are the different versions of the same gene?

Which feature is found in DNA?

Why do chromosomes resemble the letter X when viewed during metaphase?

What type of normal human cell contains 22 autosomes and a Y chromosome?

During which phase of mitosis do sister chromatids separate to opposite poles of the cell?

During which process would a cell plate form?

In a bacterial species, 20% of the bases in its DNA are C. What percent of the bases are G?

What are the two halves of a duplicated chromosome? (two words)

What process occurs when cancer cells detach from tumors and spread to other parts of the body?

What is the relationship between proto-oncogenes and oncogenes?

What is the process by which cells of a malignant tumor can break away and start new cancers at distant locations?

Which substance is not a known carcinogen?

During which phase of the cell cycle do most organelles duplicate?

-DNA polymerase moves along the length of the unwound helix, starting at the end of one strand and finishing at the end of the other strand. As shown in this figure, what is the result of this phenomenon?

-How do smoking and alcohol consumption affect cancer risk?

Can Science Cure the Common Cold Introduction to the Scientific Method

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Is It Possible to Supplement Your Way to Better Performance and Health

Body Weight and Health: Enzymes, Metabolism, and Cellular Respiration

Life in the Greenhouse: Photosynthesis and Climate Change

Are You Only As Smart As Your Genes Mendelian and Quantitative Genetics

DNA Detective: Complex Patterns of Inheritance and Dna Profiling

Genetically Modified Organisms: Gene Expression, Mutation,

Where Did We Come From the Evidence for Evolution

An Evolving Enemy: Natural Selection

Who Am I Species and Races

The Greatest Species on Earth Biodiversity and Classification

Is the Human Population Too Large Population Ecology

Conserving Biodiversity: Community and Ecosystem Ecology

Where Do You Live Climate and Biomes

Organ Donation: Tissues and Organs

Binge Drinking: the Digestive and Urinary Systems

Clearing the Air: Respiratory and Cardiovascular Systems

Vaccination: Protection and Prevention or Peril Immune System,

Human Sex Differences: Endocrine, Skeletal, and Muscular Systems

Is There Something in the Water Reproductive and Developmental Biology

Study Drugs: Brain Boost or Brain Drain Brain Structure and Function

Feeding the World: Plant Structure and Growth

Growing a Green Thumb: Plant Physiology

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