Exam 1-Clicker Questions Flashcards
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
The space inside the first two membranes is called the matrix
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
Chlorophyll molecules are soluble in the stroma of the chloroplasts
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
It produces a high concentration of protons in the stroma and low concentration of protons in the thylakoid space
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
Both PSI and PSII must run to produce NADPH
TRUE or FALSE
Do plant cells have mitochondria?
TRUE
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
The citric Acid Cycle produces CO2
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
Glycolysis occurs in the mitochondria
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
Glycolysis
and
Production of CO2
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
mitochondria are found in both prokaryotic and eukaryotic cells
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
requires an input of energy
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
mitochondria have two membranes
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
proteins are polymers of nucleotides
They are polymers of amino acids!!!!
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
red blood cell
to carry more oxygen, but this limits their lifespan and thus need to be made continually
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
one end to the molecule is charged and the other end is not
which of the following is NOT part of the endomembrane system?
endoplasmic reticulum
nuclear membrane
plasma membrane
lysosome membrane
lysosome
ribosome
ribosome
They have no membrane
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
Simple sugars are polymers of monosaccharides
simple sugars are just simple sugars
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
all proteins have quaternary structure
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
hydrogen bonds
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
Molecules have unevenly distributed electrons and unlike charges attract
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
the amount of energy required to raise the temperature of a substance
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
1000 times higher concentration of H+ as
10^3 = 1000
the lower the number of pH, the higher the amount of H+
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
form between hydrogen atoms
96% of the mass of all organisms is:
carbon, nitrogen, oxygen, hydrogen
carbon, oxygen, potassium, hydrogen
carbon, nitrogen, phosphorus, hydrogen
carbon, oxygen, nitrogen, helium
carbon, nitrogen, oxygen, hydrogen
How many micrometers in a meter?
100
1000
100,000
1,000,000
1,000,000
ONE MILLION!!!!
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
4 billion years old
Most of the organisms on the earth today are:
Prokaryotic
Eukaryotic
Prokaryotic
