Q: When menstrual periods become less frequent and finally cease; this is called? Choices: - climax - hormonal imbalance - metabolic - menopause A:
menopause

(Question)
Q: Some sea anemones establish what kind of relationship with hermit crabs by attaching to the crab's shell? Choices: - pathogenic - parasitic - predatory - mutualistic A:
(Answer)
mutualistic

Ques: Q: What is a person who studies the frequency and distribution of disease within human populations and environments called? Choices: - biologist - entymologist - anthropologist - epidemiologist A:
Ans: epidemiologist

(Q).
Q: What muscle is found only in the walls of the heart? Choices: - respiratory muscle - abdominal muscle - skeletal muscle - cardiac muscle A:
(A).
cardiac muscle

Ques:Q: What is the term for a change in an object's motion, which occurs whenever an object is acted upon by an unbalanced force? Choices: - rotation - compression - inclination - acceleration A:

Ans:acceleration

Question: Q: What catalyst substances may also allow reactions to occur by different pathways that have lower activation energy? Choices: - carbohydrates - hormones - calories - enzymes A:
Answer:
enzymes