5.1 The Cell Cycle
5.2 Mitosis & Cytokinesis
5.3 Regulation of the Cell Cycle
5.4 Asexual Reproduction
5.5 Multicellular Life
100
During interphase a cell grows, duplicates organelles, and a. divides the nucleus. b. produces a new cell. c. copies DNA. d. divides the cytoplasm.
What is c. copies DNA.
100
Which is the term for the group of proteins that organizes and condenses long strands of DNA into tight coils? a. chromatids b. telomeres c. histones d. centromeres
What is c. histones
100
Which of the following phrases best describes cancer? a. presence of genetic defects caused by hereditary disorders b. uncontrolled cell growth caused by mutations in genes that control the cell cycle c. multiple gene mutations on a chromosome of DNA d. absence of cyclins in the DNA
What is b. uncontrolled cell growth caused by mutations in genes that control the cell cycle
100
What is the main difference between binary fission and mitosis? a. Two parents are required for mitotic reproduction. b. There is no DNA replication in binary fission. c. Binary fission occurs in single-celled organisms only. d. Mitosis takes place only in sexual reproduction.
What is c. Binary fission occurs in single-celled organisms only.
100
A plant's leaf consists of a. many identical cells. b. a group of organs. c. organs that form a system. d. various types of tissue.
What is d. various types of tissue.
200
During the gap 1 stage of the cell cycle, a cell a. carries out its normal functions. b. divides its cytoplasm. c. splits into two new cells. d. duplicates its DNA.
What is a. carries out its normal functions.
200
The process of organizing and condensing DNA into its compact form takes place at the start of a. cytokinesis. b. mitosis. c. interphase. d. metaphase.
What is b. mitosis.
200
Which of the following is true of malignant tumors? a. They can cause tumors in other parts of the body. b. They contain cells that stay clustered together. c. They are easily removed through surgery. d. They do not require treatment.
What is a. They can cause tumors in other parts of the body.
200
Which of the following reproduce asexually through mitosis? a. only unicellular eukaryotes b. some multicellular and unicellular eukaryotes c. many multicellular eukaryotes d. most unicellular prokaryotes
What is b. some multicellular and unicellular eukaryotes
200
Which phrase best describes an organ system? a. group of tissues that performs a function b. group of cells that differentiates at the same rate c. group of specialized cells that forms organs d. group of organs that work together
What is d. group of organs that work together
300
In which stage of the cell cycle do the nucleus and its contents divide? a. gap 2 b. synthesis c. mitosis d. gap 1
What is c. mitosis
300
Which of the following phases of mitosis is represented by the diagram? a. Metaphase b. Telophase c. Anaphase d. Prophase
What is a. Metaphase
300
Kinases and cyclins are internal factors that a. cause apoptosis. b. cause cancer cells to break away. c. prevent mitosis. d. control the cell cycle.
What is d. control the cell cycle.
300
Which phrase best describes fragmentation? a. parent organism splits into pieces, each of which forms a new organism. b. parent organism sends off runner that grows into new organism. c. parent organism produces eggs and sperm, which form a new organism. d. parent organism sprouts projection that becomes new organism.
What is a. parent organism splits into pieces, each of which forms a new organism.
300
Stem cells are important to multicellular organisms because of their a. capacity to differentiate. b. potential to become totipotent. c. tendency to maintain homeostasis. d. ability to relocate.
What is a. capacity to differentiate.
400
Which of the following limits the maximum size of a cell? a. the stage of the cell cycle b. the ratio of cell surface area to volume c. the size of the organism d. the number of mitochondria in the cell
What is b. the ratio of cell surface area to volume
400
During which phase of mitosis do sister chromatids separate from each other? a. anaphase b. telophase c. prophase d. metaphase
What is a. anaphase
400
Proteins that bind to cells and stimulate cell division are called a. growth factors. b. enzymes. c. kinases. d. carcinogens.
What is a. growth factors.
400
Vegetative reproduction, budding, and fragmentation are examples of a. increased genetic variation. b. asexual mitotic reproduction. c. prokaryotic colony formation. d. reproduction through binary fission.
What is b. asexual mitotic reproduction.
400
Cells in a developing embryo differentiate based on a. symmetry in the first division. b. their particular DNA. c. their location in the embryo. d. secretions from the embryo.
What is c. their location in the embryo.
500
Why do the cells lining the stomach divide more quickly than those in the liver? a. They are much smaller cells. b. They need much more surface area. c. They undergo more wear and tear. d. They have fewer chromosomes.
What is c. They undergo more wear and tear.
500
As a part of the cell cycle, a cell produces new daughter cells that are identical to the original cell. During which phase are the two daughter cells physically separated? a. second growth phase b. first growth phase c. synthesis phase d. cytokinesis
What is d. cytokinesis
500
A hormone present in the blood can stimulate the growth of certain cells. The hormone is acting as a(n) a. external factor. b. daughter cell. c. oncogene. d. carcinogen.
What is a. external factor.
500
In a single-celled organism, mitosis is used for a. reproduction. b. growth. c. development. d. repair.
What is a. reproduction.
500
Which sequence shows the progression from least complex structure to most complex structure? a. organ system --> tissue --> organ --> cell b. cell --> organ --> tissue --> organ --> system c. cell --> tissue --> organ --> organ system d. organ system --> organ --> tissue --> cell
What is c. cell --> tissue --> organ --> organ system
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