Biology Quiz

Question 1:

Which of the following cell organelles is responsible for generating energy through cellular respiration?

a) Golgi apparatus
b) Endoplasmic reticulum
c) Mitochondria
d) Lysosomes

Question 2:

Which blood vessel carries deoxygenated blood from the heart to the lungs for oxygenation?

a) Pulmonary artery
b) Pulmonary vein
c) Aorta
d) Superior vena cava

Question 3:

Which of the following is responsible for transmitting signals between neurons in the nervous system?

a) Hormones
b) Neurotransmitters
c) Enzymes
c) White blood cells

Question 4:

Which process involves the conversion of atmospheric nitrogen into a usable form by plants?

a) Nitrogen fixation
b) Photosynthesis
c) Transpiration
d) Respiration

Question 5:

Which of the following is responsible for the breakdown of carbohydrates into glucose during digestion?

a) Lipase
b) Amylase
c) Trypsin
d) Pepsin

Question 6:

Which structure in the human eye is responsible for refracting light and focusing it onto the retina?

a) Cornea
b) Iris
c) Lens
d) Sclera

Question 7:

Which of the following is the smallest unit of life?

a) Cell
b) Atom
c) Molecule
d) Organ

Question 8:

What is the function of the alveoli in the respiratory system?

a) Pumping blood to the heart
b) Exchanging gases (oxygen and carbon dioxide) with the blood
c) Producing mucus to trap dust and pathogens
d) Filtering waste products from the blood

Question 9:

Which hormone is responsible for regulating blood sugar levels in the human body?

a) Insulin
b) Estrogen
c) Testosterone
d) Thyroxine

Question 10:

In which stage of mitosis do the sister chromatids separate and move to opposite poles of the cell?

a) Prophase
b) Metaphase
c) Anaphase
d) Telophase