Q: What organ system transports blood through the body and to and from the lungs? Choices: - metabolism - digestive - nervous - circulatory A:
circulatory

(Question)
Q: What occurs when there are differences in fitness among a population? Choices: - evolution - natural process - natural change - natural selection A:
(Answer)
natural selection

Ques: Q: In addition to insects, what large invertebrate phylum includes animals such as spiders, centipedes, and lobsters? Choices: - onychophora - fungi - ostracods - arthropoda A:
Ans: arthropoda

(Q).
Q: An excellent solvent that holds heat well and allows hydrogen bonds, what substance has many properties critical to life? Choices: - liquid - blood - plasma - water A:
(A).
water

Ques:Q: What large organelle comprised of cup-shaped discs is found close to the nucleus of the cell, where it modifies proteins that have been delivered in transport vesicles? Choices: - mitochondria - ribosome - chloroplast - golgi apparatus A:

Ans:golgi apparatus

Ques:Q: How do organophostbate pesticides work? Choices: - inhibiting reticulum - inhibiting cryptosporidium - inhibiting testosterone - inhibiting acetylcholinesterase A:

Ans:
inhibiting acetylcholinesterase