Which if the following organisms is not classified as an animal?

A. Amoeba

B. Paramecium

C. Euglena

D. Obelia

An organism that operates at the cellular level of organization, carries out its physiological activities by
using its

A. cell membrane

B. organelles

C. small size

D. cytoplasm

The organelle which eliminates water from the body of a protozoan is the

A. plasma membrane

B. contractile vacuole

C. nucleus

D. cell wall

Which of the following cell types has the least number of mitochondria?

A. Cardiac cells of the heart

B. Cells of the cornified layer

C. Muscle cells of the bladder

D. Muscle cells of the diaphragm

A typical plant cell is mainly distinguished from an animal cell by the possession of

A. chloroplast and nucleus

B. cell wall and cytoplasm

C. chloroplast and cell wall

D. cell wall and mitochondrion

Which of the following characteristics do fungi share in common with animals?

A. Presence of digestive tract

B. Movement from one place to another

C. Storage of carbohydrates as glycogen

D. Movement of centrioles during cell division

Which of the following processes involves diffusion?

A. Opening and closing of stomatal pores

B. Turgidity of herbaceous plants

C. Absorption of water through the root hairs

D. Absorption of digested food into the villi

The mechanism of opening and closing of stomata in plants is based on

A. turgidity and diffusion

B. turgidity and flaccidity

C. osmosis and diffusion

D. diffusion and flaccidity

In cellular respiration energy is made available to organisms by

A. removal of a phosphate group from ADR

B. breaking off a phosphate group from ATP

C. adding a phosphate group to glucose

D. breaking off a hydrogen ion from NADPH

Excretion in Paramecium sp. is by diffusion because

A. its habitat is water and moist places

B. it has simple, small and few internal organs

C. it has a large surface area to volume ratio.

D. it has a large efficient meganucleus.