UCL University Preparatory Certificate for Science & Engineering

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Biology Sample Test - Part 1

This is a photograph of an organelle found in living cells. Use it to help answer questions 1, 2 and 3.

(From Essential Cell Biology, Alberts B et al (2009) 3rd edition; Garland Science, NY & London. Photo by Daniel S Friend.)

(From Essential Cell Biology, Alberts B et al (2009) 3rd edition; Garland Science, NY & London. Photo by Daniel S Friend.)

1) What is the name of this organelle?

A. Chloroplast

B. Endoplasmic reticulum

C. Mitochondrion

D. Ribosome

2) What is the function of this organelle?

A. Anaerobic respiration

B. Aerobic respiration

C. Protein release from cell

D. Photosynthesis

3) Which one of the following substances is produced when this organelle is functioning.

A. Oxygen

B. Carbon dioxide

C. Glucose

D. Starch

Figure 2 is a photograph of cell division taking place in the tip of a plant root.

A group of cells undergoing division - photo taken by Islam El-Konaissi, UPCSE student 2007/08, of his cell preparation.

4) Why is a root tip a good place to see this type of cell division?

A.
No light is present

B.
Plant roots only grow downwards

C.
It is an area of active growth

D.
Plants often store food reserves in roots

5) The cell marked I on the diagram has 24 chromosomes. How many chromosomes are present in the cell marked II?

A. 6

B. 12

C. 24

D. 48