Biochemistry Practice Test 3

1. What is the composition of nucleotide?

a base + a phosphate

a base + a sugar + phosphate

a base + a sugar

a sugar + a phosphate

2. In which of the following forms, glucose is stored in plants?

Glycogen

Cellulose

Starch

Dextrin

3. Which of the following nucleotides is not present in RNA?

CMP

TMP

GMP

AMP

4. What is the main aim of human genome project?

To improve techniques of finger printing

To identify and sequence of all the genes present in the human body

To remove disease causing genes from humans

To introduce new genes to human beings

5. The process of introduction of foreign DNA into an animal cell is called ____________

Inversion

Transfection

Transversion

Conversion

6. Which of the following is false about purine and pyrimidine bases?

They are hydrophobic and relatively insoluble in water at the near-neutral pH of the cell

At acidic or alkaline pH the bases become charged and their solubility in water increases

At acidic or alkaline pH the bases become charged and their solubility in water decreases

Purines have two rings in their structure, but pyrimidine bases have only one ring

7. In which of the following, glucose residues are linked by β1 &arr; 4 glycosidic bonds?

Cellulose

Glycogen

Amylose

Starch

8. Which of the following enzyme is used in PCR?

HRP

EcoRII

EcoRI

Taq DNA polymerase

9. Which of the following leads to disruption of nucleosomal structure?

Acetylation

Methylation

Phosphorylation

Carboxylation

10. A segment of DNA that reads from the same forward and backward is called ____________

Palindromic DNA

Plasmid DNA

Copy DNA

Complementary DNA