Characteristics of Life — Unit test Answers
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Which best describes chromosomal deletion?
A
occurs when part of a chromosome breaks off and is inserted into the middle of another chromosomeB
occurs when part of a chromosome breaks off and reattaches backward on the same chromosomeC
occurs when part of a chromosome breaks off and does not reattachD
occurs when part of a chromosome breaks off and attaches to another chromosome3
Why is it important to know the difference between science and pseudoscience?
A
to look intelligentB
to make informed decisionsC
to score well on testsD
to tell believable stories4
Why does prolonged exposure to UV light from the Sun or tanning beds increase the risk for getting skin cancer?
A
increased exposure to UV light decreases the risk of a mutation occurringB
increased exposure to UV light increases the risk of a mutation occurringC
increased exposure to UV light decreases the immune system functionD
increased exposure to UV light has no effect on the risk for getting skin cancer5
On which feature is pseudoscience based?
A
detailed research with reliable sourcesB
static information that does not changeC
repeated investigationsD
testable experience6
Consider the diagram.Which chromosomal change is represented?
A
deletionB
nondisjunctionC
inversionD
insertion7
What kind of effect can a chromosomal change can have on an organism?
A
positive, negative, or no effectB
positive or no effectC
negative effectD
positive or negative effect8
Gary has a chromosomal deletion and Heather has a chromosomal insertion. Which best describes which disease each may have?
A
Gary might have DiGeorge syndrome and Heather might have Fragile X syndrome.B
Gary might have Kleinfelter’s syndrome and Heather might have Fragile X syndrome.C
Gary might have Fragile X syndrome and Heather might have Down syndrome.D
Gary might have DiGeorge syndrome and Heather might have Down syndrome.9
Which best describes the process of insertion?
A
occurs when part of a chromosome breaks off and is placed into the middle of another chromosomeB
occurs when part of a chromosome breaks off and reattaches backward on the same chromosomeC
occurs when part of a chromosome breaks off and does not reattachD
occurs when part of a chromosome breaks off and attaches to another chromosome10
A chromosome has an inversion. Which describes a pericentric inversion?
A
deletion of genes within the same chromosome armB
switching of genes within the same chromosome armC
switching of genes around the centromereD
deletion of genes around the centromereDid you find these answers helpful?
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