27 Jun Biology 20 MCQs
Question
The process of making a copy of a DNA molecule is:
A. transcription.
B. replication.
C. translation.
D. protein synthesis.
Question 2 of 20
__________ describes how a cell makes a protein from the protein coding sequence of a gene.
A. Transcription
B. Gene expression
C. Translation
D. Gene phrasing
Question 3 of 20
The process of translation can be broken down into three basic steps. Which of the following is NOT one of these steps?
A. Initiation
B. Elongation
C. Translocation
D. Termination
Question 4 of 20
When only one nucleotide base is involved in a mutation, this is called:
A. chromosomal mutation.
B. template error.
C. point mutation.
D. nonsense codon.
Question 5 of 20
There are four types of chromosomal aberrations. Which of the following does NOT belong in this group?
A. Inversions
B. Translocations
C. Inherent
D. Deletions
Question 6 of 20
Fibers extending from cell pole to cell pole are called the:
A. cleavage furrow.
B. cell plate.
C. cell equator.
D. spindle.
Question 7 of 20
An organelle used during animal cell division is the:
A. lysosome.
B. mitochondrion.
C. Golgi apparatus.
D. centriole.
Question 8 of 20
The time it takes for cells to divide:
A. varies, but it takes sophisticated equipment to measure this small difference.
B. depends on the health and environment of the cell.
C. does not vary at all, but is controlled by an internal clock.
D. varies widely and unpredictably in cells of the same local area of the same organism during any specific time period.
Question 9 of 20
__________ may cause cancer.
A. Chemotherapeutic agents
B. Mutagenic agents
C. The polymerase chain reaction
D. Cytokinesis
Question 10 of 20
The separation of homologous chromosomes is called:
A. synapsis.
B. segregation.
C. mitosis.
D. fertilization.
Question 11 of 20
Different forms of the same gene are referred to as:
A. loci.
B. alleles.
C. homozygotes.
D. hybrids.
Question 12 of 20
The expression of a gene is called:
A. probability.
B. phenotype.
C. genotype.
D. pleiotropy.
Question 13 of 20
In humans, the genes for blood type A and B show lack of dominance to one another and both dominate O. Two type O people would be able to have:
A. IO IA IB IAB type children.
B. only O type children.
C. IO IA type children.
D. only AB type children.
Question 14 of 20
A case of more than one gene influencing one phenotypic characteristic is called:
A. pleiotropy.
B. polygenic inheritance.
C. X-linked.
D. monohybrid.
Question 15 of 20
The sex of mammals is determined by:
A. the autosomes they receive.
B. the type of sex chromosomes received.
C. the number of recessive chromosomes received.
D. None of these answers is or may be a factor.
Question 16 of 20
Using __________ it is possible to show the nucleotide sequence differences among individuals since no two people have the same nucleotide sequences.
A. mutagenesis
B. polymerase chain reaction
C. genetic fingerprinting
D. translocation
Question 17 of 20
The laboratory procedure for copying selected segments of DNA is:
A. the polymerase chain reaction.
B. translation.
C. jumping genes.
D. a point mutation.
Question 18 of 20
The __________ was a 13-year effort to determine the normal or healthy human DNA sequence.
A. Embryo Cloning Project (ECP)
B. Human Genome Project (HGP)
C. Stem Cell Research Project (SRP)
D. Gene Therapy Project (GTP)
Question 19 of 20
__________ reproduces many varieties of fruit trees and other plants by making cuttings of the plant and rooting the cuttings.
A. Cloning
B. Sexual reproduction
C. Meiosis
D. Somatic cell transfer
Question 20 of 20
__________ involves inserting genes, deleting genes, or manipulating the action of genes in order to cure or lessen the effect of genetic diseases.
A. Gene therapy
B. The role of a DNA librarian
C. Genetic counseling
D. Genetic therapeutic medicine
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