Week 2 Quiz

Childbirth

A condition NOT regulated by a negative feedback loop would be:

lower the activation energy needed to start the reaction

An enzyme acts to

Isotopes

The nucleus of unstable _____ of an element will decay leading to emission of radiation

Atomic mass

This refers to a weighted average of the atomic weights of all naturally occurring isotopes of an element

Effector

Which feedback system structure receives output from the control center?

organism - organ system - organ - tissue - cellular - chemical

Which of the following correctly list the levels of structural organization in the human body from largest to smallest?

C and D

Which of the following is an example of the basic life process called growth? A. muscle contraction B. digestion of proteins C. lifting weights and gaining muscle mass D. mineral deposits accumulating between bone cells to cause a bone to lengthen

B only

Which of the following subatomic particles are shared by two atoms to form covalent bonds? A. neutron B. electron C. proton

Energy

Which term is defined as the capacity to do work?

Metabolism

Which term refers to the sum of all chemical processes that occur in the body?