Below is a List of the levels of organization in organisms.
i. Tissue
ii. System
ii. Cell
iv. Organ

Which of the following structures is responsible for osmoregulation?

A. I

B. II

C. III

D. IV

E. V

Excretion is carried out through the structure labelled

A. I

B. III

C. IV

D. V

E. VI

The part labelled VII is made up of

A. carbohydrates

B. lipid materials

C. waste materials

D. protein materials

E. food particles

The correct sequence of the levels in an increasing order of complexity is

A. I,II,III

B. lll, I, l\/, ll

C. lll, IV, l, ll

D. lV, lll, I, ll

E. IV, l, ll, lll

Which of the following organelles is used for locomotion in Paramecium?

A. pseudopodium

B. Trchocyst

C. Cilium

D. pellicle

E. Contractile vacuole

Which of the following is not true of the nucleus of a living cell? It contains

A. chromosome

B. Nucleolus

C. nucleoplasm

D. chromatids

E. ribosomes

The cell membrane consists of

A. carbohydrates and lipids

B. vitamins and proteins

C. lipids and proteins

D. water and sugar

E. starch and cellulose

Which of the following is not likely to be found in the cell of a ripe tomato fruit?

A. plastids

B. Chlorophyll

C. Cellulose cell wall

D. Mitochondrion

E. Mineral salts

Which of the following constitutes the main internal tissue of a leaf?

A. Cuticle

B. Mesophyll

C. Vascular tissue

D. Lower epidermis

E. Upper epidermis

Four cells with osmotic potential equivalent to that of 3% salt solution were immersed respectively in solutions
of different concentrations labeled as follows: I = 4% salt solution; II = 6% salt solution III = 1% salt solution;
IV = 10% salt solution; V = 5% salt solution. Which of the solutions will cause an increase in osmotic
pressure within the cell?

A. I

B. II

C. III

D. IV

E. V

Which of the following statements is not true of osmotic process?

A. There must be a selectively permeable membrane

B. The two solutions must be of different concentrations initially

C. It involves only the movement of water molecules

D. Equilibrium is reached when there is equal distribution of water molecules

Which of the following is the correct route for the movement of materials through the kidney?

A. Glomerulus → Bowman’s capsule → Loop of Henle → Collecting tubule → Pelvis

B. Glomerulus → Loop of Henle → Collecting tubule → Bowman’s capsule → Pelvis

C. Pelvis → Bowman’s capsule → Glomerulus →Loop of Henle → Collecting tubule

D. Bowman’s capsule → Glomerulus → Loop of Henle → Collecting tubule → Pelvis

E. Bowman’s capsule → Loop of Henle →Glomerulus → Collecting tubule → Pelvis

Which of the following is the function of the hormone in the lslets of Langerhans?

A. is used in protein metabolism

B. is involved in sugar synthesis

C. aids the rate at which glucose is converted to glycogen

D. controls the fluid content of the body

E. plays a role in the pH balance of the body fluid

Blood in mammals transports oxygen because it contains the pigment called

A. haemoglobin

B. chlorocruorin

C. melanin

D. haemocyanin

E. haemoerythrin.