Cell Differentiation and Specialization — Unit test Answers
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The diagram shows a phase of mitosis.Which does the letter A represent in the diagram?
A
centrioleB
chromosomeC
centromereD
spindle22
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If a stop codon is like a red traffic light, which is most like a green traffic light during transcription?
A
DNAB
promoterC
mRNAD
nucleotide23
The data in the table were recorded during an investigation in which a paramecium was placed in a hypertonic salt solution. If this data is shown in a bar graph, which description accurately represents the bars?
A
The graph has five bars of equal height.B
The bars range from tallest for very high concentration to shortest for very low concentration.C
The bar for very low concentration is twice the height of the bar for medium concentration.D
The bar for very high concentration is five times the height of the bar for very low concentration.24
How has the study of mitosis affected scientists’ knowledge of cancer?
A
It led to a study of how to induce cancer cells to divide more rapidly.B
It led to an understanding of how cancer cells divide so rapidly.C
It led to the development of contact-inhibition regulators.D
It led to the discovery of how to prevent cancer cells from dividing.25
Which best defines homeostasis?
A
modifying the external environmentB
maintaining a stable internal environmentC
controlling what enters and exits the cellD
movement of materials into the cellDid you find these answers helpful?
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