What are the three main components of a nucleotide?
Sugar, Phosphate, Nitrogenous Base
100
What is the name of the amino acid associated with the anticodon ACC?
Tryptophan
100
Where does Transcription take place in the cell?
Nucleus
100
Where must an mRNA attach before protein production can begin? (plays a critical roll in the making of proteins)
Ribosome
100
Which of the following would NOT be found in RNA?
A. Thymine
B. Uracil
C. Adenine
D. Guanine
A. Thymine
200
Responsible for the order of the amino acids in a protein; stores genetic info.
DNA
200
If the tRNA anticodon is UUG, then what is its complimentary DNA base sequence?
A. TTG
B. AAC
C. AUG
D. ATC
A. TTG
200
The process by which an mRNA strand is created from a strand of DNA is called _____________.
Transcription
200
tRNA carries ______________ and _____________.
A. ribosomes, amino acids
B. DNA, RNA
C. anticodons, amino acids
D. codons, proteins
C. anticodons, amino acids
200
Bond which holds nitrogen bases together?
Hydrogen bond
300
If the DNA base sequence is AAT, then what is its complimentary mRNA codon?
A. TTA
B. UUA
C. GGA
D. UGA
B. UUA
300
If a sequence of codons on mRNA is U-G-G-C-A-U-G-A-A, what are the corresponding anticodons?
A. A-C-C-G-U-T-C-A-A
B. A-C-A-G-C-A-G-U-U
C. A-C-C-G-U-A-C-U-U
D. T-C-C-G-T-A-C-T-T
C. A-C-C-G-U-A-C-U-U
300
DNA serves as the template for the synthesis of
1) Cellulose
2) Starch
3) Thymine
4) mRNA
4) mRNA
300
Scientists have learned that an organism produces a special protein that prevents it from freezing in cold weather. Which of these contains the information for making this protein?
1) Chromosomes
2) Genes
3) tRNA
4) Ribosomes
2) Genes
300
Which statement is true about people who have an AB blood type?
1) They can have only type O children
2) They exhibit a type O phenotype
3) they have two alleles that are codominant
4) They are homozygous for blood type B
3) they have two alleles that are codominant
400
If the DNA sequence is TAC, then what is its associated amino acid?
Methionine
400
Which of the following shows the correct base pairing in RNA?
A. Adenine-Thymine
B. Thymine-Cytosine
C. Adenine-Uracil
D. Guanine-Thymine
C. Adenine-Uracil
400
One strand of DNA is A-T-T-G-C-A-T-A-T, what is the corresponding strand of mRNA?
A. U-A-A-C-G-U-A-U-A
B. A-U-U-G-C-A-T-A-T
C. T-A-A-C-G-T-A-T-A
D. T-A-T-C-G-A-A-T-A
A. U-A-A-C-G-U-A-U-A
400
Keratin is a protein found in hair. Where in a cell is keratin made? On what Ribosome
(answer both to receive full points)
In the cytoplasm, at the Ribosome
400
In rats, the gene for brown fur (B) is dominant over the gene for gray fur (b). Which set of genotypes represents a cross that could produce offspring with gray fur from parents that both have brown fur?
1) Bb x bb
2) BB x bb
3) BB x Bb
4) Bb x Bb
4) Bb x Bb
500
If the DNA sequence is GTG, then what is its complimentary tRNA anticodon?
A. GUG
B. CAC
C. TAT
D. CUC
A.
500
Name the three major differences between RNA and DNA. (you must name all three to get 500 points).
1. RNA is single-stranded whereas DNA is double-stranded.
2. The sugar in RNA is ribose and deoxyribose in DNA.
3. In RNA, Thymine is replaced with Uracil.
500
Summarize Transcription
Where it takes place
Who's involved
What happens there
WHY does Transcription happen?
Nucleus
DNA, mRNA
DNA unzips, a copy of DNA is made onto the mRNA, mRNA leaves the nucleus into the cytoplasm
Because DNA cannot leave the nucleus. It's too big
500
Summarize, in your own words, the process of Translation
Where does it take place
Who is involved
What happens there
What are the products of translation
1) mRNA attaches to a ribosome
2) The ribosome "reads" the mRNA
3) tRNA attaches the correct anticodon to mRNA's codon
4) A Polypeptide forms
500
Calculate the correct percentages of T, C, and G from the information given below.
A = 23%
T =
C =
G =
A. T = 23%, C = 19%, G = 19%
B. T = 23%, C = 24%, G = 31%
C. T = 23%, C = 27%, G = 27%
D. T = 23%, C = 31%, G = 19%