Q: What occurs when a substance diffuses through a cell membrane without any help from other molecules? Choices: - simple filtration - visible diffusion - visual diffusion - simple diffusion A:
simple diffusion

(Question)
Q: What term is used to describe how fast a chemical reaction occurs? Choices: - response time - catalysis - velocity - reaction rate A:
(Answer)
reaction rate

Ques: Q: Bond lengths are intermediate between covalent single bonds and what? Choices: - trivalent bonds - wavefunction double bonds - gravitational double bonds - covalent double bonds A:
Ans: covalent double bonds

(Q).
Q: What is the order and family of a meat-eating cat like a tiger? Choices: - Synapsida felidae - Mammalia felidae - hierarchies felidae - carnivora felidae A:
(A).
carnivora felidae

Ques:Q: The colloquial term "ribbon worm" refers to the mostly marine species of what phylum? Choices: - nematoida - lophophorata - gnathifera - nemertea A:

Ans:nemertea

Ques: Q: What did roots evolve from that plants used for aborption? Choices: - seeds - leguminous - oomycetes - rhizoids A:
Ans:
rhizoids