Lecture 1A

Question 1

Of the four ways in which atoms can form molecules, NaCl is an example of which kind of bond?

Answer 1

Sodium chloride, ionic bond

Question 2

The outer shell of most atoms is considered “Stable” when it has how many electrons?

Answer 2

8 atoms

Question 3

The two ions mostly involved in generating an electrical signal down an axon are?

Answer 3

Sodium and potassium

Question 4

When a muscle is signaled to contract by the neurotransmitter at the neuromuscular junction, this ion is released from the sarcoplasmic reticulum and binds with troponin.

Answer 4

Calcium

Question 5

All living organisms have these six atoms in common

Answer 5

Sodium, calcium, nitrogen, phosphorus, sulfur