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BioSemExam Part 3
Test Description: Semester test
Instructions: Answer all questions to get your test result.
1) The offspring of two chickens have a 1 out of 4 chance of being white, which is a recessive trait. Which cross could produce the probability of such offspring?
A
Yy x Yy
B
yy x yy
C
YY x Yy
D
YY x YY
2) The hereditary information of an organism is carried in its genes. A gene is a long molecule of-
A
Protein
B
DNA
C
Carbohydrates
D
RNA
3) Which parent determines the sex of the offspring?
A
father
B
mother
C
both, equally
D
none of the above
4) A genetic counselor is examining a karyotype from a patient when an extra copy of chromosomes 13 noticed. This condition is referred to as
A
triploidy
B
monosomy
C
diploidy
D
trisomy
5) Which base sequence cannot occur in RNA?
A
AAGCCC
B
CCUAAC
C
TGCTAT
D
GCUAGG
6) Which nitrogen base is only found in an RNA nucleotide?
A
Guanine
B
Adenine
C
Thymine
D
Uracil
7) Which lists the components of an RNA nucleotide?
A
deoxyribose, phosphate, cytosine
B
ribose, phosphate, uracil
C
deoxyribose, phosphate, uracil
D
ribose, phosphate, thymine
8) DNA is made up of-
A
Proteins
B
Cells
C
Ribosomes
D
Nucleotides
9) Which component is found in DNA but not in RNA?
A
hydrogen-bonded pairs
B
single-stranded backbone
C
sugar-phosphate groups
D
adenine-thymine base pair
10) Which nitrogen base is only found in an DNA nucleotide?
A
thymine
B
uracil
C
guanine
D
adenine
11) Which is a correct example of the base-pairing rule within the Watson-Crick double-helix model of DNA?
A
Cytosine-thymine
B
Thymine-guanine
C
Adenine-thymine
D
Guanine-adenine
12) Who received credit for the discovery of the double helix structure of DNA in 1953?
A
Linus Pauling
B
Robert Hooke
C
James Watson and Francis Crick
D
Gregor Mendel
13) How do the functions of DNA and RNA differ?
A
DNA stores genetic information, while RNA relays genetic information for protein synthesis
B
DNA aids in energy production, while RNA directs protein transport
C
DNA directs protein transport, while RNA aids in energy production
D
DNA relays genetic information for protein synthesis, while RNA stores genetic information
14) What are the building blocks of proteins?
A
Amino acids
B
Ribosomes
C
Nucleotides
D
Hydrogen bonds
15) This is the process where DNA is being copied.
A
Transcription
B
None of the above
C
DNA Replication
D
Translation
16) What kind of molecule carries amino acids to the ribosome, where they are joined with the codon in the process of translation?
A
rRNA
B
protein
C
tRNA
D
mRNA
17) Protein synthesis occurs in the -
A
Golgi body
B
Ribosomes
C
Chloroplasts
D
Nucleus
18) The type of mutation in which part of a chromosome is reversed in direction is called -
A
Duplication
B
Inversion
C
Deletion
D
Translocation
19) What is a mutation?
A
Only changes in an organism that changes the way an organism behaves
B
All changes in an organism that decreases the chance for survival
C
Only changes in an organism that results in harm to the organism
D
Any changes in the genetic material of an organism
20) When a mutation occurs and part of the DNA is deleted, it is a -
A
Insertion
B
Deletion
C
Frameshift
D
Inversion
*select an answer for all questions
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