A difference between marathon runners and sprinters is:
marathon runners have more slow twitch fibers in their leg muscles
sprinters perform better in activities that require low, prolonged movements.
sprinters have a higher proportion of muscle fibers that need oxygen to make ATP.
marathon runners have more fast twitch fibers in their leg muscles
Humans are both
heterotrophs and autotrophs
heterotrophs and consumers
autotrophs and producers
producers and consumers
Photosynthetic organisms are:
consumers that obtain organic molecules from another living organism.
producers that make all their own organic matter from inorganic molecules.
decomposers that obtain nutrients from the soil
producers that make all of their organic matter from organic molecules that they take in.
The waste products of cellular respiration include:
water and carbon dioxide
carbon dioxide only
water only
water and glucose
What compound directly supplies the energy needed for cellular work?
glucose
ATP
water
fat
An aerobic process requires ________________.
carbon dioxide
carbohyrates
oxygen
Respiration describes the exchange of gases between your blood and the outside air. Cellular respiration ________________.
produces glucose
produces carbon dioxide
produces oxygen
produces ATP
Which of the following equations describes aerobic cellular respiration?
glucose --> lactic acid + energy
energy + carbon dioxide + water --> glucose + oxygen + water
glucose + oxygen -->carbon dioxide + water + energy
none of the above
During cellular respiration, electrons move through a series of electron acceptor molecules. Which of the following is a true statement about this process?
Oxygen is eventually reduced by the electron to form water.
The electrons release large amounts of energy each time they are transferred from one electron acceptor to another.
The electrons gain energy as they move from one electron acceptor to another.
Glucose is eventually reduced by the electrons to form water.
The first electron acceptor of cellular respiration is _________________.
NAD+
O2
CO2
H2O
Where in the cell does the process of glycolysis take place?
between the inner and outer mitochondrial membrane
Smooth Endoplasmic Reticulum
within the fluid just inside the inner mitochondrial membrane
Cytoplasm
Which of the following is the correct sequence of stages in cellular respiration?
electron transport, glycolysis, citric acid cycle
citric acid cycle, electron transport, glycolysis
citric acid cycle, glycolysis, electron transport
glycolysis, citric acid cycle, electron transport
Which of the following is a result of glycolysis?
a net loss of 2 ATPs per glucose molecule
conversion of glucose to pyruvic acid
production of CO2
conversion of NADH to NAD+
What must pyruvic acid be converted to before it can enter the citric acid cycle?
ethyl alcohol
lactic acid
acetyl CoA
citric acid
Aerobic cellular respiration generates about ________________ ATP from one glucose.
2
6
32
3
Human muscle cells use lactic acid fermentation to
produce ATP without oxygen
produce ATP using the electron transport chain
regenerate NADH
produce more ATP than is possible through aerobic respiration
Anaerobic respiration produces a maximum of ___________________ ATP per glucose.
10
38
4
ATP synthase plays a role in ____________________________.
pulling electrons down the electron transport chain
generating ATP
pumping hydrogen ions using active transport across the inner mitochondrial membrane
glycolysis
Which of the following molecules are responsible for the burn felt in your muscles after sprinting?
In which phase of cellular respiration is the most ATP produced?
the citric acid cycle
fermentation
the electron transport chain
