BIO 1150 Exam 4 Questions With Correct
Answers
What are four ways that a psychoactive drug may alter normal
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neurotransmitter signaling? - CORRECT ANSWER✔✔--drug may
| | | | | |
stimulate release of neurotransmitter and enhance response of
| | | | | | | |
receiving neuron |
-drug may inhibit release of neurotransmitter and dampen response of
| | | | | | | | | |
neuron
-may increase and prolong effect of neurotransmitter
| | | | | |
-drug may bind to receptor and effect activity of receiving neuron
| | | | | | | | | |
What is a gene? - CORRECT ANSWER✔✔--segment of DNA on a
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chromosome that directs synthesis of a specific polypeptide that will
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play an important role (functional/structural) in the cell
| | | | | | |
What is meant by the description that the genetic code is "universal"? -
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CORRECT ANSWER✔✔--genetic code- "language of genes that
| | | | | | |
translates the sequence of bases in DNA into specific sequence of amino
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acids
|
, What are the "letters" of the genetic alphabet? - CORRECT
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ANSWER✔✔-For DNA? A, T, C, G (Adenine, Thymine, Cytosine, Guanine) | | | | | | | | |
| For RNA? A, U, C, G (Adenine, Uracil, Cytosine, Guanine)
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What are the parts of a nucleotide? Which parts are the same for each
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nucleotide? Which are different? - CORRECT ANSWER✔✔--Nucleotide=
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5 Carbon ribose sugar (SAME) a phosphate molecule (SAME) one of the
| | | | | | | | | | | |
four nitrogen bases (A, U, C , G) (DIFFERENT)
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The phosphodiester bonds that link nucleotides together are formed by
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what type of chemical reaction? - CORRECT ANSWER✔✔--DNA
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nucleotides= made up of deoxyribose, a phosphate, and a nitrogenous
| | | | | | | | | |
base
-RNA nucleotides= made up of ribose, a phosphate, and nitrogen base
| | | | | | | | | |
-Phosphodiester bonds= build RNA and DNA polynucleotides -caused by | | | | | | | |
2 condensation reaction (2 waters are produced)
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What is Chargaff's rule? - CORRECT ANSWER✔✔--the concentration of
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Adenine always equaled the concentration of Thymine and the
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concentration of Guanine, always equaled the concentration of
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Cytosine. A=T G=C | |
What is a chromosome? - CORRECT ANSWER✔✔--threadlike structure
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made of DNA and associated proteins. Humans have 46
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chromosomes=23 pairs |
Answers
What are four ways that a psychoactive drug may alter normal
| | | | | | | | | | |
neurotransmitter signaling? - CORRECT ANSWER✔✔--drug may
| | | | | |
stimulate release of neurotransmitter and enhance response of
| | | | | | | |
receiving neuron |
-drug may inhibit release of neurotransmitter and dampen response of
| | | | | | | | | |
neuron
-may increase and prolong effect of neurotransmitter
| | | | | |
-drug may bind to receptor and effect activity of receiving neuron
| | | | | | | | | |
What is a gene? - CORRECT ANSWER✔✔--segment of DNA on a
| | | | | | | | | | |
chromosome that directs synthesis of a specific polypeptide that will
| | | | | | | | | |
play an important role (functional/structural) in the cell
| | | | | | |
What is meant by the description that the genetic code is "universal"? -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔--genetic code- "language of genes that
| | | | | | |
translates the sequence of bases in DNA into specific sequence of amino
| | | | | | | | | | |
acids
|
, What are the "letters" of the genetic alphabet? - CORRECT
| | | | | | | | | |
ANSWER✔✔-For DNA? A, T, C, G (Adenine, Thymine, Cytosine, Guanine) | | | | | | | | |
| For RNA? A, U, C, G (Adenine, Uracil, Cytosine, Guanine)
| | | | | | | | |
What are the parts of a nucleotide? Which parts are the same for each
| | | | | | | | | | | | | |
nucleotide? Which are different? - CORRECT ANSWER✔✔--Nucleotide=
| | | | | | |
5 Carbon ribose sugar (SAME) a phosphate molecule (SAME) one of the
| | | | | | | | | | | |
four nitrogen bases (A, U, C , G) (DIFFERENT)
| | | | | | | |
The phosphodiester bonds that link nucleotides together are formed by
| | | | | | | | | |
what type of chemical reaction? - CORRECT ANSWER✔✔--DNA
| | | | | | | |
nucleotides= made up of deoxyribose, a phosphate, and a nitrogenous
| | | | | | | | | |
base
-RNA nucleotides= made up of ribose, a phosphate, and nitrogen base
| | | | | | | | | |
-Phosphodiester bonds= build RNA and DNA polynucleotides -caused by | | | | | | | |
2 condensation reaction (2 waters are produced)
| | | | | | |
What is Chargaff's rule? - CORRECT ANSWER✔✔--the concentration of
| | | | | | | | |
Adenine always equaled the concentration of Thymine and the
| | | | | | | | |
concentration of Guanine, always equaled the concentration of
| | | | | | | |
Cytosine. A=T G=C | |
What is a chromosome? - CORRECT ANSWER✔✔--threadlike structure
| | | | | | | |
made of DNA and associated proteins. Humans have 46
| | | | | | | | |
chromosomes=23 pairs |
