Biotechnology Quiz | MCQ | Biotech Test Quiz #mcq.CETJOB
1 >>In the inherited condition glycogen cardiomyopathy, teens develop muscle weakness including the heart muscle. The muscle tissue contains huge ____ swollen with the carbohydrate glycogen. ?
(A) lysosomes
(B) mitochondria
(C) peroxisomes
(D) nuclei
2 >>Ann has inherited Sly disease, which is characterized by mental retardation, heart defects, and death. Individuals with this disease lack an enzyme that normally breaks down glycolipid molecules called mucopolysaccharides. Two organelles cause this illness. They are the lysosomes and the ?
(A) nucleus.
(B) mitochondria.
(C) peroxisomes.
(D) ER
3 >>Secretion involves information transfer from the DNA to ?
(A) mRNA which directs manufacture of proteins.
(B) tRNA which directs manufacture of proteins.
(C) tRNA which directs manufacture of mRNA.
(D) mRNA which directs manufacture of tRNA.
4 >>Membrane proteins can be involved ?
(A) in signal transduction.
(B) as cellular adhesion molecules.
(C) in cell identification.
(D) all of the above.
5 >>Cancer can result from ?
(A) deficient cell division.
(B) excessive apoptosis.
(C) both a and b.
(D) neither a nor b.
6 >>Which factors do not influence cell division? ?
(A) crowding
(B) growth hormones
(C) cyclins
(D) all of the above influence cell division
7 >>____ retain the ability to specialize in particular ways in response to signals. ?
(A) Organelles
(B) Eukaryotic cells
(C) Cell membranes
(D) Stem cells
8 >>The cells of which of the three domains of life contain ribosomes? ?
(A) Archaea
(B) Bacteria
(C) Eukarya
(D) all of the above
9 >>One human ejaculation delivers about ____ sperm. ?
(A) 100 thousand
(B) 100 million
(C) 100 billion
(D) an unknown quantity
10 >>Egg and sperm are ?
(A) monoploid.
(B) haploid.
(C) diploid.
(D) triploid.
11 >>A diploid cell containing eight chromosomes undergoes meiosis. How many chromosomes are present in the cell after meiosis I? ?
(A) 2
(B) 4
(C) 8
(D) 16
12 >>A diploid cell containing eight chromosomes undergoes meiosis. How many chromosomes are present in the cell after meiosis II? ?
(A) 2
(B) 4
(C) 8
(D) 16
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13 >>A diploid cell has 40 units of DNA at G1 of interphase. How many units of DNA are present in the cell after meiosis I? ?
(A) 10
(B) 20
(C) 40
(D) 50
14 >>A diploid cell has 40 units of DNA at G1 of interphase. How many units of DNA are present in a gamete? ?
(A) 10
(B) 20
(C) 40
(D) 50
15 >>The ____ is a membrane surrounding the embryo that gives rise to the umbilical blood vessels. ?
(A) yolk sac
(B) allantois
(C) choronic villi
(D) trophoblast
16 >>The ____ is composed of specialized ectoderm that develops into the brain and spinal cord. ?
(A) notochord
(B) primitive streak
(C) allantois
(D) neural tube
17 >>Chemicals or other agents that cause birth defects are called ?
(A) transformers.
(B) carcinogens.
(C) alterations.
(D) teratogens.
18 >>The drug ____ was used to treat morning sickness between 1957 and 1961. Unfortunately, babies born to mothers who used this drug were born with incomplete or missing legs and arms. ?
(A) lithium
(B) diethylstilbestrol
(C) penicillamine
(D) thalidomide
19 >>A phenotypically normal woman has a polar body biopsy. Upon examination, the polar body is found to carry a disease-causing recessive allele. The woman knows that the associated oocyte ?
(A) carries the mutant allele.
(B) carries the normal allele.
(C) cannot support the development of an embryo.
(D) no conclusions can be dawn about the oocyte.
20 >>Which of the following genetic disorders is expressed in individuals after the prenatal period? ?
