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Chapter 3, Section 4
Test Description: The DNA Connection
Instructions: Answer all questions to get your test result.
1) The main function of genes is to-
A
create nitrogen bases.
B
distribute genetic information along nitrogen bases.
C
control the production of proteins.
D
determine which proteins to produce.
2) DNA is made up of _______. The order of these determines _______________.
A
nitrogen bases; the number of proteins.
B
hydrogen bases; which proteins will be produced.
C
amino acids; the number of nitrogen bases.
D
nitrogen bases; which proteins will be produced.
3) Three nitrogen bases equal one ____________. These line up to form __________.
A
hydrogen; proteins
B
amino acid; proteins
C
amino acid; DNA
D
hydrogen; DNA
4) ____________ is how cells make proteins. It occurs on _______. From the ______ in the nucleus, a messenger carries the _______ from the nucleus to the ribosomes.
A
Genetic code;chromosomes;ribosomes;nucleus
B
Protein synthesis;nucleus;ribosomes;genetic code
C
Genetic code;ribosomes;nucleus;protein synthesis
D
Protein synthesis;ribosomes;chromosomes;genetic code
5) ______ is the genetic messenger that carries information from the DNA in the nucleus to the ribosomes.
A
RAN
B
RNA
C
mDNA
D
tDNA
6) The differences between RNA and DNA is-
A
RNA is only one side of the ladder.
B
nitrogen base uracil is used instead of thymine.
C
sugar is ribose instead of deoxyribose
D
All of these.
7) ____________ copies DNA and leaves the nucleus, while ___________ carries amino acids and adds them together.
A
Messenger RNA (mRNA); transfer DNA (tDNA)
B
Transfer RNA (tRNA); messenger RNA (mRNA)
C
Messenger RNA (mRNA); transfer RNA (tRNA)
D
Transfer RNA (tDNA); messenger DNA (mRNA)
8) A mutation is ____________. A mutation can cause a different ________ to be produced and change its characteristics.
A
the order of how chromosomes are paired;protein
B
the order of how chromosomes are paired;amino acid
C
any change that occurs in a gene or chromosome;amino acid
D
any change that occurs in a gene or chromosome;protein
9) Types of mutations can happen_________. In a ______ cell, it will only affect that cell. In a ______ cell, it can be passed to offspring.
A
2) when the chromosomes separate improperly during meiosis;body;reproductive.
B
both 1) and 2) ; reproductive; body.
C
both 1) and 2) ; body; reproductive.
D
1) when the wrong base is present in DNA during replication;body;reproductive
10) Effects of mutation can be __(white buffalo in wild, diseases in humans) by affecting survival or reproduction, or ___(bacteria resistant to antibiotics) by improving chances for survival
A
harmful; helpful
B
None of these.
C
helpful; harmful
D
avoided; increased
*select an answer for all questions
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