Get premium membership and access revision papers, questions with answers as well as video lessons.

Biochemistry For Medical Sciences 1 Question Paper

Biochemistry For Medical Sciences 1

Course:Bachelor Of Science In Public Health

Institution: Jomo Kenyatta University Of Agriculture And Technology question papers

Exam Year:2010

INSTRUCTIONS: ANSWER ALL QUESTIONS IN SECTION A AND B AND ONLY ONE IN SECTION C

SECTION A-ANSWER ALL QUESTIONS.EVERY QUESTION HAS ONLY ONE CORRECT ANSWER. A WRONG ANSWER OR GUESS WORK WILL RESULT IN A PENALTY OF 1/2 MARK

QUESTION 1

The following are characterstics of the plasma membrane in prokaryotic cells except
a. lipid bilayer
b. selectively permiable
c. contains electron transparent proteins
d. provide mechanical strength to the cell

QUESTION 2

The site for the synthesis of steroids and complex carbohydrates is:
a. ribosomes
b. rough endoplasmic reticulum
c. smooth endoplasmic reticulum
d.golgi complex

QUESTION 3

The hydrolytic enzymes which digest cell component after death of cells are contained in membrane bound vessels called;
a. lysosome
b.microsomes
c.liposomes
d.ribosomes

QUESTION 4

Which of the following properties of water is responsible for capillary action
a.high boiling point
b.high surface tension
c.high specific heat index
d.high heat of vapourisation

QUESTION 5

The blood of patients suffering from diabetes mellitus may have pH lower than the physiological pH resulting in a condition referred to as:
a. alkalosis
b. acidosis
c. aciduria
d. alkalinity

QUESTION 6

Which is not true for fibrous proteins
a. soluble in aqueous systems
b.physically tough
c.insoluble in water
d.Insoluble in dilute salt solutions

QUESTION 7

Beta pleated sheets are a part of which structure of proteins
a. primary
b. secondary
c. tertiary
d. quarterly

QUESTION 8

Which among the following amino acids functions as a chemical messenger
a.histidine
b.tyrosine
c.glycine
d.serine

QUESTION 9
The following amino acids have an aromatic side chain
a. alanine valine leucine
b. proline alanine valine
c. glycine serine isoleucine
d.phenylalanine tyrosine tryptophan

QUESTION 10

Which of the following carbohydrates is not a reducing sugar
a. glucose
b. sucrose
c. maltose
d. celloblose

QUESTION 11

all except one of the statements below true for nucleotides
a.donors of phosphate groups
b.regulate enzyme activity
c.building blocks of nucleic acids

QUESTION 12

DNA replication involves the enzyme
a. DNA polymerase
b.RNA polymerase
c.DNA replicase
d.DNA duplicase

QUESTION 13

Some of the viruses responsible for causing cancer in humans may induce changes within the chromosomal genetic material through:
a.transposition of genes
b.chromosomal breakage
c.chromosomal recombimation
d.chromosomal intergration

QUESTION 14
State the essential fatty acid among the ones listed below
a.linoleic
b.oleic
c.palmitic
d.stearic

QUESTION 15

Deficiency of vitamin A in infants and young children would lead to
a.rickets
b.beriberi
c.xerophthalmia
d.pellagra

QUESTION 16

Choose the stop codon among the ones given below
a.UAG
b.UAU
c.UCG
d.UAC

QUESTION 17

Pernicious anaemia is caused by deficiency
a.vitamin A
b.vitamin B6
c.Vitamin C
d.vitamin B12

QUESTION 18

The basic protein found in chromosomes together with DNA are called

a.histidine
b.histrons
c.non-histones
d.histones

QUESTION 19

The anticodon is found within the;
a.mRNA
b.tRNA
c.rRNA
d.snRNA

QUESTION 20

pH affects enzymes catalysed reactions through
a.affecting charged state of the enzyme
b.increasing kinetic energy of substrate
c.affecting the movement of molecules
d.increasing binding of substrate molecules

SECTION B:ANSWER ALL QUESTIONS IN THIS SECTION. EACH QUESTION IS 6 MARKS

1. Describe the structure and function of the mitochondrion

2. State any six biological functions of proteins

3. Outline DNA replication

4. Explain the effects of temperature on enzyme catalyzed reactions

5.Briefly describe the types of proteins found in biomembranes

SECTION C: ANSWER ANY ONE QUESTION

6. Discuss protein synthesis (20marks)

7. describe the mechanisms involved in the regulation of enzyme activity (20marks)

8. a. Describe the general structure of a nucleotide (8marks)
b. Describe the types of RNAs found in cells (12marks)

Biochemistry For Medical Sciences 1 Question Paper

More Question Papers

Popular Exams