STPM Biology 2016 Term 1 MCQ

Cellulose, starch and glycogen ore polysaccharides with different properties due to their

type of ______.

• bonding

• functions

• side chains

• monosaccharide subunits

What would happen to a protein during electrophoresis when the pH of the buffer solution

used is below its isoelectric point?

• The protein does not move.

• The protein moves towards the anode.

• The protein moves towards the cathode.

• The protein moves towards the anode and then to the cathode.

Which is true about peptide bond?

• The formation of a peptide bond releases one water molecule.

• The tertiary structure of a protein is determined by its peptide bond.

• The characteristic of a protein molecule is determined by its peptide bond.

• The peptide bond is formed between two amino acids with the same characteristics.

Which are true about DNA and RNA?

• I and II

• I and IV

• II and III

• III and IV

When a student examined a cell under a microscope, he observed the presence of cell wall

and the cell does not contain membrane-bound organelles. What conclusion can be made from

the observation?

• It is a plant cell.

• It is an animal cell.

• It is a bacterial cell.

• It is either a plant or an animal cell.

Which of the following differentiates prokaryotic from eukaryotic cells?

• The presence or absence of a rigid cell wall.

• Whether or not the cell is partitioned by internal membranes.

• The presence or absence of ribosomes.

• The ability of the cell to carry out cellular metabolism.

Smooth endoplasmic reticulum is extensively developed in cells of

I liver

II pancreas

III salivary gland

IV adrenal cortex

• I and II

• I and IV

• II and III

• I

The initial level of sucrose solutions which are separated by a semi-permeable membrane in a U-tube is shown in the diagram below.

• I and II

• I and III

• II and IV

• III and IV

Which substance corresponds to its correct property?

• A

• B

• C

• D

Three different reactions involving the same enzyme and substrate are shown in the graphs. Choose the correct answer.

• A

• B

• C

• D