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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
RNA
B
Protein
C
DNA
D
Carbohydrates
3) Which parent determines the sex of the offspring?
A
both, equally
B
none of the above
C
father
D
mother
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
monosomy
B
triploidy
C
trisomy
D
diploidy
5) Which base sequence cannot occur in RNA?
A
TGCTAT
B
CCUAAC
C
GCUAGG
D
AAGCCC
6) Which nitrogen base is only found in an RNA nucleotide?
A
Uracil
B
Guanine
C
Adenine
D
Thymine
7) Which lists the components of an RNA nucleotide?
A
ribose, phosphate, uracil
B
deoxyribose, phosphate, uracil
C
deoxyribose, phosphate, cytosine
D
ribose, phosphate, thymine
8) DNA is made up of-
A
Ribosomes
B
Nucleotides
C
Cells
D
Proteins
9) Which component is found in DNA but not in RNA?
A
hydrogen-bonded pairs
B
sugar-phosphate groups
C
adenine-thymine base pair
D
single-stranded backbone
10) Which nitrogen base is only found in an DNA nucleotide?
A
adenine
B
guanine
C
uracil
D
thymine
11) Which is a correct example of the base-pairing rule within the Watson-Crick double-helix model of DNA?
A
Thymine-guanine
B
Cytosine-thymine
C
Guanine-adenine
D
Adenine-thymine
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 relays genetic information for protein synthesis, while RNA stores genetic information
B
DNA aids in energy production, while RNA directs protein transport
C
DNA directs protein transport, while RNA aids in energy production
D
DNA stores genetic information, while RNA relays genetic information for protein synthesis
14) What are the building blocks of proteins?
A
Amino acids
B
Ribosomes
C
Hydrogen bonds
D
Nucleotides
15) This is the process where DNA is being copied.
A
Translation
B
None of the above
C
Transcription
D
DNA Replication
16) What kind of molecule carries amino acids to the ribosome, where they are joined with the codon in the process of translation?
A
mRNA
B
protein
C
tRNA
D
rRNA
17) Protein synthesis occurs in the -
A
Chloroplasts
B
Nucleus
C
Golgi body
D
Ribosomes
18) The type of mutation in which part of a chromosome is reversed in direction is called -
A
Duplication
B
Deletion
C
Inversion
D
Translocation
19) What is a mutation?
A
All changes in an organism that decreases the chance for survival
B
Only changes in an organism that changes the way an organism behaves
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
Inversion
B
Frameshift
C
Insertion
D
Deletion
*select an answer for all questions
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