Q: What is the plasma membrane formed by? Choices: - a cytoplasm bilayer - cholesterol byproduct - single lipid layer - a phospholipid bilayer A:
a phospholipid bilayer

(Question)
Q: Structures like the human tail bone and whale pelvis are called what? Choices: - primordial structures - parasitic structures - adaptations - vestigial structures A:
(Answer)
vestigial structures

Ques: Q: The kidneys help control acid-base balance by excreting _____ and generating bicarbonate that helps maintain blood plasma ph within a normal range? Choices: - magnesium ions - sodium ions - lithium ions - hydrogen ions A:
Ans: hydrogen ions

(Q).
Q: All cells need what for processes like active transport? Choices: - hydrogen - sunlight - oxygen - energy A:
(A).
energy

Ques:Q: The white mountains in new hampshire are part of what province? Choices: - montreal - geologic - antarctic - appalachian A:

Ans:appalachian

Ques: Q: Nails cover the tips of what? Choices: - lips and teeth - fingers and lips - ribs and nerves - fingers and toes A:
Ans:
fingers and toes