Problem:

Question 1: A carbon atom of mass number 12 and a carbon atom of mass number 14 are

A) covalent

B) compounds

C) ions

D) isotopes

Question 2: A chlorine atom has 17 protons, 18 neutrons, and 17 electrons. The atomic number of

chlorine is

A) 8

B) 17

C) 35

D) 52

Quetion 3: If you place the probe of a pH meter in lye or sodium hydroxide (NaOH), it will read

pH 14. Sodium hydroxide is

A) an acid

B) neutral

C) a base

Question 4: This polysaccharide forms fibers that are a major component of plant cell walls:

A) glucose

B) starch

C) cellulose

D) glycogen

Question 5: Glycerol is a building block of

A) starch

B) enzymes

C) vegetable oil

D) DNA

Question 6: Which of these types of molecules contain nitrogen?

A) polysaccharides

B) proteins

C) phospholipids

Question 7: Prokaryotic cells, with no nucleus or membranous organelles, are found in

A) animals

B) bacteria

C) fungi

D) plants

Question 8: The main function of a ribosome is to

A) extract energy from glucose

B) synthesize glucose

C) store food in the form of fat

D) synthesize proteins

Question 9: Mitochondria

A) package proteins for secretion from cell

B) contain chromosomes

C) are sites of oxidation of glucose to generate ATP

D) synthesize proteins

Question 10: The plasma membrane consists of

A) a single layer of phospholipid molecules

B) a double layer of phospholipid molecules in which proteins are embedded

C) several layers of protein and carbohydrate molecules

D) a triple layer of phospholipids and carbohydrates

Question 11: The movement of molecules from a region of low concentration across a membrane

to a region of high concentration by use of ATP energy is

A) active transport

B) diffusion

C) passive transport

D) osmosis

Question 12: The oxygen in our atmosphere is produced by

A) greenhouse effect

B) cellular respiration

C) photosynthesis

D) volcanic eruptions

Question 13: Yeast cells break down glucose anaerobically into

A) ethanol and CO2

B) lactic acid and CO2

C) lactic acid and H2O

D) ethanol and H2O

Question 14: The net energy gain from complete cellular respiration is

A) 2 ATP

B) 4 ATP

C) 8 ATP

D) 36-38 ATP

Question 15: Carbon dioxide is released in

A) the light-dependent phase of photosynthesis

B) the Krebs cycle

C) glycolysis

D) the Calvin cycle

Question 16: If the concentration of glucose in the water outside of a cell is lower than the

concentration inside,

A) water will tend to enter the cell by osmosis

B) water will tend to leave the cell by osmosis

C) glucose will tend to enter the cell by osmosis

D) glucose will tend to leave the cell by osmosis

Question 17: What happens if a red blood cell is placed in a hypotonic solution?

A) the cell will shrink

B) the cell will swell and may burst

C) the cell will remain the same size

Please provide correct answer.