Module 2 Lecture Quiz: Gen. Bio
Which of the following can be attributed to water's high specific heat?
A lake heats up more slowly than the air around it.
Which of the following effects can occur because of the high surface tension of water?
A raft spider can walk across the surface of a small pond.
Which of the following molecules is a part of ATP?
Adenosine
Why is carbon so important in biology?
It can form a variety of carbon skeletons and host functional groups.
Which of the following is true of carbon?
It can form both polar and nonpolar bonds.
Which of the following is considered to be a strong base (alkali)?
NaOH → Na+ + OH-
Which of the following statements is true about buffer solutions?
They maintain a relatively constant pH when either acids or bases are added to them.
A(n) ________ is a substance that increases hydrogen ion concentrations of a solution.
acid
Cohesion, surface tension, and adhesion are the properties of water molecules that ________.
are a result of hydrogen bonding
Hydrogen ions ________________ hydroxide ions in pure water.
are equal to
The figure shows the structures of glucose and fructose. These two molecules differ in the ________.
arrangement of carbon, hydrogen, and oxygen atoms
The element present in all organic molecules is ________.
carbon
Liquid water ________.
has a heat of vaporization higher than that of most other substances
The kind and number of bonds an atom can form depends on ________.
its electron configuration
In a single molecule of water, two hydrogen atoms are bonded to a single oxygen atom by ________.
polar covalent bonds
Rank, from low to high, the pH of blood, stomach acid, and urine.
stomach acid, urine, blood
The complexity and variety of organic molecules is due to ________.
the chemical versatility of carbon atoms
Differences among organisms are caused by differences in the ________.
types and relative amounts of organic molecules synthesized by each organism
