The Chem of Lyfe <3

Question 1

The key message in this Lecture is

Answer 1

Chemical structures affect biological functions

Question 2

In water molecule (H2O), the O atom is more electronegative than the two H atoms. It means

Answer 2

Electrons have greater attraction to the O atom

Question 3

Compared with H atoms, O atom in H2O is

Answer 3

electronegative

Question 4

Compared with H atoms, N atom in NH3 is

Answer 4

electronegative

Question 5

Hydrogen bond is

Answer 5

attraction between a hydrogen and an electronegative atom

Question 6

Carbon can maximally form __ bonds with other atoms.

Answer 6

4

Question 7

50 years ago, pregnant women who were prescribed thalidomide for morning sickness gave birth to children with birth defects. Thalidomide is a mixture of two enantiomers; one reduces morning sickness, but the other causes severe birth defects. This illustrates that

Answer 7

chemical structure affects biological functions greatly.