Biology Quiz

15 questions, easier first and harder toward the end. Pick one answer per question.

1 Which organ pumps blood?

Lungs Heart Liver Kidney

2 Basic unit of life?

Tissue Organ Cell Organism

3 Plants make food by:

Respiration Photosynthesis Digestion Transpiration

4 Humans exhale mostly:

Oxygen Nitrogen Carbon dioxide Hydrogen

5 Plants absorb water through their:

Leaves Stem Roots Flowers

6 Powerhouse of the cell?

Nucleus Ribosome Mitochondrion Chloroplast

7 Which blood cells fight infection?

Red White Platelets Plasma

8 Pigment that absorbs light for photosynthesis?

Melanin Hemoglobin Chlorophyll Carotene

9 Vitamin made by skin from sunlight?

A B12 C D

10 Cell division producing two identical cells:

Meiosis Mitosis Fertilisation Fission

11 Enzyme in saliva that breaks down starch:

Pepsin Amylase Lipase Trypsin

12 Molecule that carries oxygen in blood:

Platelets Plasma Hemoglobin Antibodies

13 Arteries carry blood ___ from the heart.

toward away around both ways

14 Organelle where proteins are synthesised:

Nucleus Ribosome Golgi Vacuole

15 Three parts of a DNA nucleotide:

Sugar, phosphate, base Sugar, protein, base Phosphate, base, lipid Sugar, water, base

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