BioSemExam Part 3 Question Preview (ID: 34240)


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When a mutation occurs and part of the DNA is deleted, it is a -
a) Insertion
b) Deletion
c) Frameshift
d) Inversion

What is a mutation?
a) Any changes in the genetic material of an organism
b) Only changes in an organism that results in harm to the organism
c) Only changes in an organism that changes the way an organism behaves
d) All changes in an organism that decreases the chance for survival

Protein synthesis occurs in the -
a) Nucleus
b) Ribosomes
c) Chloroplasts
d) Golgi body

What are the building blocks of proteins?
a) Nucleotides
b) Ribosomes
c) Amino acids
d) Hydrogen bonds

This is the process where DNA is being copied.
a) Transcription
b) Translation
c) DNA Replication
d) None of the above

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) tRNA
c) rRNA
d) protein

Who received credit for the discovery of the double helix structure of DNA in 1953?
a) Gregor Mendel
b) Robert Hooke
c) James Watson and Francis Crick
d) Linus Pauling

How do the functions of DNA and RNA differ?
a) DNA directs protein transport, while RNA aids in energy production
b) DNA aids in energy production, while RNA directs protein transport
c) DNA stores genetic information, while RNA relays genetic information for protein synthesis
d) DNA relays genetic information for protein synthesis, while RNA stores genetic information

Which nitrogen base is only found in an DNA nucleotide?
a) adenine
b) guanine
c) thymine
d) uracil

Which is a correct example of the base-pairing rule within the Watson-Crick double-helix model of DNA?
a) Guanine-adenine
b) Adenine-thymine
c) Thymine-guanine
d) Cytosine-thymine

The type of mutation in which part of a chromosome is reversed in direction is called -
a) Deletion
b) Duplication
c) Inversion
d) Translocation

Which component is found in DNA but not in RNA?
a) hydrogen-bonded pairs
b) sugar-phosphate groups
c) single-stranded backbone
d) adenine-thymine base pair

DNA is made up of-
a) Nucleotides
b) Ribosomes
c) Cells
d) Proteins

Which nitrogen base is only found in an RNA nucleotide?
a) Adenine
b) Guanine
c) Thymine
d) Uracil

Which lists the components of an RNA nucleotide?
a) ribose, phosphate, uracil
b) ribose, phosphate, thymine
c) deoxyribose, phosphate, uracil
d) deoxyribose, phosphate, cytosine

Which base sequence cannot occur in RNA?
a) TGCTAT
b) GCUAGG
c) CCUAAC
d) AAGCCC

The hereditary information of an organism is carried in its genes. A gene is a long molecule of-
a) Protein
b) RNA
c) DNA
d) Carbohydrates

Which parent determines the sex of the offspring?
a) father
b) mother
c) both, equally
d) none of the above

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) trisomy
b) diploidy
c) triploidy
d) monosomy

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

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