Final Biology Exam *
This quiz is to help you if you have a final in biology coming up.
- 1.Which transfers information from the NUCLEUS of a cell to the CYTOPLASM
- A.
TRNA
- B.
DNA
- C.
MRNA
- D.
RRNA
- 2.Which of the following is NOT a difference between RNA and DNA
- A.
DNA is a double strand of nucleotides, but RNA a single strand
- B.
RNA has five bases, but DNA only four
- C.
DNA contains a deoxyribose sugar, but RNA contains ribose sugar
- D.
RNA contains uracil and DNA Thymine
- 3.Which of the following most directly transfers information from a chain of nucleotides to a chain of amino acids.
- A.
MRNA
- B.
DNA
- C.
TRNA
- D.
RRNA
- 4.Lymphomas and leukemias affect which type of cells
- A.
Skin
- B.
Blood
- C.
Endocrine
- D.
Muscle
- 5.The central dogma of molecular biology states that ______ is transcribed into ______ which is translated into _______.
- A.
Genes/polypeptides/gene product
- B.
Protein/DNA/RNA
- C.
DNA/mRNA/tRNA
- D.
DNA/RNA/protein
- 6.Cancer may be caused by ________.
- A.
Carcinogens
- B.
Viruses
- C.
Substances found in food
- D.
All of these
- 7.A single gene specifically contains information for
- A.
Synthesis of a single protein
- B.
A single physical trait
- C.
Synthesis of a protein, carbohydrate or lipid
- D.
One or more physical traits, depending on the gene
- 8.If a codon were read two bases at a time instead of three bases at a time, how many different possible amino acids could be specified?
- A.
16
- B.
4
- C.
2
- D.
64
- 9.Which is true of mutations
- A.
All mutations involve whole chromosomes
- B.
Occur only in gametes
- C.
Some are visible only under certain conditions
- D.
Most are beneficial
- 10.One of the major direct benefits of mutations for a population is:
- A.
Reduced ability to reproduce
- B.
Introduction of new genetic material
- C.
Weeding out the less fit
- D.
Smaller populations
- 11.Which is true of mutations
- A.
Sometimes only temporary changes if the DNA is repaired
- B.
Heritable changes in the sequence of nucleotides in DNA
- C.
Heritable changes in DNA that produce an observable change
- D.
Mistakes in the formation of proteins
- 12.Which is an example of a chromosomal mutation
- A.
Replacement of the sequence UGU with UGC
- B.
Substitution of a single base in DNA
- C.
A segment of DNA is lost
- D.
All of these
- 13.Which is true of mutations
- A.
Often expressed as abnormal proteins
- B.
Some do not change the sequence of amino acids coded for by the mutated gene
- C.
Are usually harmful to the organism
- D.
All of these
- 14.Which best applies to the thousands of genes found in your DNA
- A.
They are all expressed, but under different circumstances
- B.
Very few are actually expressed
- C.
They are either expressed during all life stages or not at all
- D.
Some are expressed constantly and others infrequently
- 15.About 85% of human cancers result from some type of
- A.
Carcinoma
- B.
Genetic Disorder
- C.
Virus
- D.
Tumor
- 16.About 85% of all human tumors are
- A.
Sarcomas
- B.
Carcinomas
- C.
Leukemia
- D.
Lymphoma
- 17.Genetic disorders may be
- A.
Inherited as recessive alleles
- B.
X-Linked traits
- C.
Passed more frequently from mothers to sons
- D.
All of these
- 18.Which best applies to stem cells
- A.
They are a large number of stem cell lines available for research
- B.
They have the potential to develop into any number of cell types
- C.
They can cure most diseases
- D.
Stem cells of adults are more potent than those of embryos
- 19.Which is true of ribosomes
- A.
Consists of large and small subunits
- B.
Consists of rRNA and proteins
- C.
Site of protein synthesis
- D.
All of these
- 20.Uncontrolled cell division is
- A.
Angiogenesis
- B.
A genetic disorder
- C.
Cancer
- D.
All of these
- 21.Spontaneous mutations occur as a result of
- A.
Damage to DNA by an outside agent
- B.
Incomplete gene expression
- C.
Instabilities in DNA
- D.
Alteration of DNA
- 22.Three codons that do not specify a match with any anticodons are
- A.
Stop codons
- B.
Antebellum codons
- C.
Start codons
- D.
Restriction codons
- 23.A sequence of three RNA nucleotides can function as a
- A.
Gene
- B.
Codon
- C.
Anticodon
- D.
Both b & c
- 24.Black fur in mince (B) is dominated to brown fur (b). Short tails (T) is dominant to long tails (t). What proportion of the offspring of the cross BbTt and BBtt will have black fur and long tails?
- A.
3/16
- B.
8/16
- C.
6/16
- D.
1/16
- 25.Which best describes the key to DNA storing genetic information that is unique to each individual organism?
- A.
The order of the repeating sugar and phosphate subunits
- B.
The type of tRNA that matches with the DNA sequence forming a gene
- C.
The ability of the DNA to mutate
- D.
The sequence of nitrogenous bases in nucleotides
Questions: 62 | Attempts: 4600 | Last updated: Jun 23, 2020
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