Mcq Subject: Biochemistry
Crossing over, true is;
A. Occurs during diplotene stage
B. Between non sister chromatids of homologous chromosomes
C. Between sister chromatids of homologous chromosomes
D. Between non homologous chromosomes sister chromatids
View DescriptionRNA primer is synthesized by –
A. Topoisomerase
B. Helicase
C. DNA primase
D. DNA ligase
View DescriptionMarfans Syndrome affecting eyes, skeletal system, and the cardiovascular system is caued by the mutation in the gene
A. Fibrillin 1
B. Fibrillin 2
C. Fibulin
D. Elastin
View DescriptionWhich of the following is non-competitive inhibitor of intestinal alkaline phosphatase?
A. L-Alanine
B. L-Tyrosine
C. L-Tryptophan
D. L-Phenylalanine
View DescriptionA 34-year-old female has a history of intermittent episodes of severe abdominal pain. She has had multiple abdominal surgeries and exploratory procedures with no abnormal findings. Her urine appears dark during an attack and gets even darker if exposed to sunlight. The attacks seem to peak after she takes erythromycin, because of her penicillin allergy. This patient most likely has difficulty in synthesizing which one of the following?
A. Heme
B. Creatine phosphate
C. Cysteine
D. Thymine
View DescriptionStarvation and diabetes mellitus can lead on to ketoacidosis which of the following features is in our of ketoacidosis due to diabetes mellitus.
A. Increase in glucagon/insulin ratio, increased CAMP and increased blood glucose
B. Decreased insulin, increased free fatty acid which is equivalent to blood glucose
C. Decreased insulin, increased free fatty acid which is not equivalent to blood glucose
D. Elevated insulin and free fatty acid, equivalent to blood glucose
View DescriptionUrine osmolality in Diabetes insipidus is
A. <150 mmol/L
B. <300 mmol/L
C. <600 mmol/L
D. <900 mmol/L
View DescriptionVitamin K is ivolved in the posttranslational modification?
A. Glutamate
B. Aspartate
C. Leucine
D. Lysine
View DescriptionPanthothenic acid is coenzyme of which of the following reaction (s):
A. Dehydrogenation
B. Oxidation
C. Decarboxylation
D. Acetylation
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