Q: What is the smallest unit capable of life known as? Choices: - living thing - organism - insect - a cell A:
a cell

(Question)
Q: An antigen is a macromolecule that reacts with components of what? Choices: - circulatory system - pulmonary system - digestion system - immune system A:
(Answer)
immune system

Ques: Q: What is the type of succession that happens after the destruction of a habitat? Choices: - primary succession - typical succession - tertiary succession - secondary succession A:
Ans: secondary succession

(Q).
Q: What causes food to move through the esophagus? Choices: - photosynthesis - proteolysis - apoptosis - peristalsis A:
(A).
peristalsis

Ques:Q: Which part of the nerve cell helps transmit nerve impulses? Choices: - dendrites - cell walls - synapses - long, threadlike extensions A:

Ans:long, threadlike extensions

Q: Defined as a difference in electric potential energy, a source of what is required in order to produce an electrical current? Choices: - wattage - momentum - magnetism - voltage A:
voltage