Q: The eyes of all vertebrates possess a single one of these structures? Choices: - vessel - sty - stalk - lens A:
lens

(Question)
Q: Salts are important in maintaining what balance of the blood? Choices: - kinetic - homeostasis - pulmonary - osmotic A:
(Answer)
osmotic

Ques: Q: The presence of what, which acts as a trigger, affects the rate of chemical reaction? Choices: - friction - heat - light - catalyst A:
Ans: catalyst

(Q).
Q: What results when gas particles rebound off the walls of their container? Choices: - light - pull - weight - pressure A:
(A).
pressure

Ques:Q: What structure connects the fetus to the placenta, allowing the exchange of gases? Choices: - sediment cord - skin cord - belly button - umbilical cord A:

Ans:umbilical cord

Q: What is a small protein that helps fight infections? Choices: - phenotype - zygote - glutamate - cytokine A:
cytokine