Exam 1-Clicker Questions

Question 1

Which of the following statements about chloroplasts is FALSE?

They have three membranes

The space inside the third membrane is called the thylakoid space

The space inside the first two membranes but outside the third membrane is called the matrix

they contain the Calvin Cycle reactions of photosynthesis

they contain the light reactions of photosynthesis

Answer 1

The space inside the first two membranes is called the matrix

Question 2

Which of the following statements about chlorophyll is FALSE?

Chlorophyll absorbs red light

Chlorophyll molecules are soluble in the storm of the chloroplasts

A photosystem is composed of about 100 chlorophyll molecules

chlorophyll absorbs blue light

none of the statements are false

Answer 2

Chlorophyll molecules are soluble in the stroma of the chloroplasts

Question 3

Which of the following statements about photosynthetic electron transport is FALSE

Water is split into H+, e, and O2

It occurs in the thylakoid membrane of the chloroplast

It produces a high concentration of protons in the stroma and low concentration of protons in the thylakoid space

Electrons are donated to NADP+ at the end

None of the statements is false

Answer 3

It produces a high concentration of protons in the stroma and low concentration of protons in the thylakoid space

Question 4

Which of the following statements about photosynthetic electron transport is TRUE?

Cyclic transport splits H2O into H+, e, and O2

Noncyclic electron transport produces only ATP

Both PSI and PSII must run to produce NADPH

Cyclic electron transport produces only NADPH

Cyclic Electron transport does not produce a proton gradient

Answer 4

Both PSI and PSII must run to produce NADPH

Question 5

TRUE or FALSE

Do plant cells have mitochondria?

Answer 5

TRUE

Question 6

Which of the following statements about the Citric Acid Cycle is TRUE?

produces ATP via Proton gradient

produces 2 pyruvate from 1 glucose

uses oxygen

produces CO2

none of the statements are true

Answer 6

The citric Acid Cycle produces CO2

Question 7

Which of the following statements is FALSE

The inter membrane space has a higher concentration of protons than the matrix

the electron transport chain is located in the inner membrane of the mitochondria

the citric acid cycle produces CO2

Glycolysis occurs in the mitochondria

ATP is produced from a proton gradients in the mitochondria

Answer 7

Glycolysis occurs in the mitochondria

Question 8

which of the following occurs in both aerobic respiration and anaerobic fermintation?
2 ANSWERS!!!

Glycolysis

citric acid cycle

formation of proton gradient

net production of NADH

production of CO2

Answer 8

Glycolysis
and
Production of CO2

Question 9

Which of the following statements about mitochondria is FALSE?

Mitochondria have two memranes

mitochondria perform aerobic respiration

mitochondria are found in both prokaryotic and eukaryotic cells

mitochondria are found in both plant and animal cells

mitochondria contain ribosomes

Answer 9

mitochondria are found in both prokaryotic and eukaryotic cells

Question 10

The formation of ATP and Pi ADP+pi–> ATP

is exergonic

does not consume or release energy

releases energy to the environment

requires an input of energy

liberates heat, which becomes the heat of metabolism

Answer 10

requires an input of energy

Question 11

Which of the following statements about mitochondria is true

Mitochondria are part of the endomembrane system

mitochondria are synthesized in the nucleus

mitochondria contain digestive enzymes

mitochondria have two membranes

mitochondria have a nucleus

Answer 11

mitochondria have two membranes

Question 12

which of the following statements is FALSE?

some carbohydrates are polymers

proteins are polymers of nucleotides

amino acids are attached to one another with a peptide bond

saturated fats tend to be solid at room temperature

a phospholipid contains two fatty acids

Answer 12

proteins are polymers of nucleotides

They are polymers of amino acids!!!!

Question 13

There is one very common type of eukaryotic cell that doesn’t have a nucleus:

stem cell

nerve cell

red blood cell

dermal cell

egg cell

Answer 13

red blood cell

to carry more oxygen, but this limits their lifespan and thus need to be made continually

Question 14

phospholipids form bilayers because:

they are completely uncharged and therefore hydrophilic

one end to the molecule is charged and the other end is not

fatty acids form hydrogen bonds with water

fatty acids form hydrogen bonds with each other

fatty acids form polymers that line up in bilayers

Answer 14

one end to the molecule is charged and the other end is not

Question 15

which of the following is NOT part of the endomembrane system?

endoplasmic reticulum

nuclear membrane

plasma membrane

lysosome membrane

lysosome

ribosome

Answer 15

ribosome

They have no membrane

Question 16

which of the following is FALSE?

polymers are formed from monomers

polymers are formed by dehydration reaction

a monosaccharide is sugar

simple sugars are polymers of monosaccharides

a dehydration reaction forms a water molecule

Answer 16

Simple sugars are polymers of monosaccharides

simple sugars are just simple sugars

Question 17

which of the following statements is FALSE?

all proteins have primary structure

primary structure is the sequence of amino acids in the polypeptide chain

an a-helix is a type of secondary structure

all proteins have quaternary structure

all proteins are polymers of amino acids

Answer 17

all proteins have quaternary structure

Question 18

two strands of DNA wrap around each other to form a double helix. The two strands are held together by:

Covalent bonds

ionic bonds

hydrogen bonds

oppositely charges ions

magic

Answer 18

hydrogen bonds

Question 19

a hydrogen bond is formed when:

Two atoms are held together by shared electrons

Molecules have unevenly distributed electrons and unlike charges attract

molecules share electrons with neighboring molecules to form a bond

electrons are lost from one molecule and gained by another

the nuclei of two atoms interact

Answer 19

Molecules have unevenly distributed electrons and unlike charges attract

Question 20

What is specific heat?

The inherited amount of molecular motion in a substance

the amount of energy required to raise the temperature of a substance

the amount of heat released when a substance changes state from solid to liquid

the amount of heat to maintain a substance in the gaseous form

Answer 20

the amount of energy required to raise the temperature of a substance

Question 21

a solution with a pH of 3 has________ a solution with a pH of 6

twice the concentration of H+ as

half the concentration of H+ as

3 times the concentration of H+ as

1000 times higher concentration of H+ as

1000 times lower concentration of H= as

Answer 21

1000 times higher concentration of H+ as

10^3 = 1000

the lower the number of pH, the higher the amount of H+

Question 22

Which of the following statements about hydrogen bonding is FALSE?

occurs between two molecules

occurs between polar molecules

are weaker then covenant bonds

form between hydrogen atoms

form between water molecules

Answer 22

form between hydrogen atoms

Question 23

96% of the mass of all organisms is:

carbon, nitrogen, oxygen, hydrogen

carbon, oxygen, potassium, hydrogen

carbon, nitrogen, phosphorus, hydrogen

carbon, oxygen, nitrogen, helium

Answer 23

carbon, nitrogen, oxygen, hydrogen

Question 24

How many micrometers in a meter?

100

1000

100,000

1,000,000

Answer 24

1,000,000

ONE MILLION!!!!

Question 25

the earth is approximately:

4 thousand years old

4 million years o ld

4 billion years old

40 billion years old

400 billion years old

Answer 25

4 billion years old

Question 26

Most of the organisms on the earth today are:

Prokaryotic

Eukaryotic

Answer 26

Prokaryotic