Q: What rigid layer surrounds the cell membrane of a plant cell? Choices: - bark - epidermis - cuticle - cell wall A:
cell wall

(Question)
Q: What does a virus inject into the host cell? Choices: - cells acid - Acetic acid - proteins acid - nucleic acid A:
(Answer)
nucleic acid

Ques: Q: What is the term for the smallest particle of an element that still has the properties of that element? Choices: - nucleus - electron - neutron - atom A:
Ans: atom

(Q).
Q: What is the common measure of how hot or cold something is? Choices: - variation - precipitation - weight - temperature A:
(A).
temperature

Ques:Q: Sickle-cell disease significantly impairs the function of what? Choices: - limbic system - nervous system - metabolism system - circulatory system A:

Ans:circulatory system

Ques: Q: What is the term for a random change in allele frequencies that occurs in a small population? Choices: - evolution - speciation - mutation - genetic drift A:
Ans:
genetic drift