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(30s) A cell becomes much larger but does not divide. Which problem is it most likely to experience?
A) It will produce too much DNA
B) It may struggle to bring in nutrients and remove waste
C) It will stop using energy
D) It will lose its cell membrane
B) It may struggle to bring in nutrients and remove waste
(30s) A cell is preparing to divide and must make a copy of its DNA. During which cell-cycle phase does this happen?
A) G1
B) S
C) G2
D) M
B) S
(30s) A scientist observes chromosomes becoming shorter, thicker, and visible under a microscope. Which phase is occurring?
A) Prophase
B) Metaphase
C) Anaphase
D) Telophase
A) Prophase
(20s) What structure is the attachment area that holds sister chromatids together?
Centromere
(30s) A bacterial population increases rapidly because each bacterium divides into two cells. Which process allows this to happen?
Binary Fission
(20s) True or False: As a cell grows, its volume increases faster than its surface area.
True
(20s) True or False: Interphase includes M1, S, and M2.
False
(20s) During which phase do sister chromatids separate and move toward opposite ends of the cell?
Anaphase
(30s) A cell contains structures that organize the spindle during animal cell division. Which structures are these?
A) Histones
B) Centrioles
C) Nucleosomes
D) Ribosomes
B) Centrioles
(20s) Most prokaryotes contain a single, __________ DNA molecule.
Circular
(30s) Two cells have the same shape, but one is much smaller. Which cell generally exchanges materials more efficiently relative to its volume?
A) The smaller cell
B) The larger cell
C) Both exchange materials equally
D) Neither cell can exchange materials
A) The smaller cell
(20s) During G1, a cell grows and makes new proteins and __________.
Organelles
(30s) A cell has two groups of chromosomes at opposite ends, and new nuclear membranes are forming. Which phase is occurring?
A) Prophase
B) Metaphase
C) Anaphase
D) Telophase
D) Telophase
(20s) True or False: Cytokinesis divides the nucleus into two nuclei.
False
(20s) True or False: Binary fission usually produces two genetically unidentical cells.
False
(30s) A growing cell has difficulty moving signaling proteins to different areas. Which cell function is being affected?
A) Cellular communication
B) Chromosome separation
C) Nuclear envelope formation
D) DNA packagin
A) Cellular communication
(30s) A cell has finished copying its DNA and is producing materials needed for division. Which phase is it in?
A) G1
B) S
C) G2
D) Cytokinesis
C) G2
(30s) A student sees chromosomes lined up in a single row through the center of a cell. Which structure helps position them there?
Spindle fibers
(20s) In animal cells, a __________ forms as the cell membrane pinches inward during cytokinesis.
Cleavage furrow
(30s) Which feature distinguishes bacterial cell division from eukaryotic cell division?
A) Bacteria use mitosis to divide their nuclei
B) Bacteria divide without first separating a nucleus
C) Bacteria must form a cell plate
D) Bacteria use four phases of mitosis
B) Bacteria divide without first separating a nucleus
(20s) Cell division helps organisms grow and repair damaged __________.
Tissues
(30s) A cell has DNA that is spread out and less condensed in the nucleus. What is this relaxed form of DNA called?
A) Chromatid
B) Chromatin
C) Centriole
D) Spindle
B) Chromatin
(30s) What would most likely happen if sister chromatids failed to separate during anaphase?
A) Both new cells could receive incorrect amounts of genetic material
B) The cell would immediately become a prokaryote
C) The cell would skip DNA replication permanently
D) The cell membrane would disappear
A) Both new cells could receive incorrect amounts of genetic material
(20s) True or False: In plant cells, the cell plate eventually develops into new cell membranes and a cell wall.
True
(30s) A skin cell divides to help replace damaged cells. Which outcome is expected?
A) Two cells with matching genetic information
B) Four cells with half the original DNA
C) Two cells with completely different DNA
D) One cell without chromosomes
A) Two cells with matching genetic information