Campbell Essential Biology, 6th Edition,
Chapter 6 2025 PRACTICE TEST WITH
QUESTIONS AND GRADED ANSWERS
when there is enough oxygen reaching your cells to support their energy needs,
___________ is said to be ______________ - CORRECT ANSWER-metabolism;
aerobic
aerobic capacity - CORRECT ANSWER-the maximum rate at which O2 can be taken in
and used by your muscle cells (the most strenuous activity that your body can maintain
aerobically)
photosynthesis - CORRECT ANSWER-the process where plants convert the energy of
sunlight to the chemical energy of sugars and other organic molecules
autotrophs - CORRECT ANSWER-organisms that make all their own organic matter
from nutrients that are completely inorganic; "self-feeders"
____________, _____________, __________, & __________ are four examples of the
organic matter made by autotrophs - CORRECT ANSWER-carbohydrates, lipids,
proteins, & nucleic acids
heterotrophs - CORRECT ANSWER-organisms that cannot make organic molecules
from inorganic ones
heterotrophs get their food by _____________ in order to _______________ -
CORRECT ANSWER-eating organic material; get nutrients and provide energy for life's
processes
producers - CORRECT ANSWER-autotrophs
consumers - CORRECT ANSWER-heterotrophs
when your muscle cells don't have sufficient O2 they _____________________ -
CORRECT ANSWER-switch to an "emergency mode"
when your muscle cells switch into "emergency mode" they __________________ -
CORRECT ANSWER-break down glucose very ineffectively and produce lactic acids as
a by-product, causing impaired muscle activity
, the chemical ingredients for photosynthesis are _____________ & ____________ -
CORRECT ANSWER-carbon dioxide (CO2) & water (H2O)
carbon dioxide's role in photosynthesis - CORRECT ANSWER-it is a gas that passes
from the air into a plant via tiny pores
water's role in photosynthesis - CORRECT ANSWER-it is absorbed from the soil by the
plant's roots
chloroplasts - CORRECT ANSWER-organelles inside leaf cells that use light energy to
rearrange the atoms of CO2 and H2O to produce sugars
glucose - CORRECT ANSWER-C6-H12-O6
oxygen gas (O2) - CORRECT ANSWER-a by-product of photosynthesis that is released
through pores into the atmosphere
energy flows through the ecosystem by: - CORRECT ANSWER-entering as sunlight
and exiting as heat
cellular respiration is a(n) ________ process - CORRECT ANSWER-aerobic
cellular respiration - CORRECT ANSWER-the aerobic harvesting of chemical energy
from organic fuel molecules
how breathing and cellular respiration are similar when it comes to O2? - CORRECT
ANSWER-when breathing, you inhale O2 and it is delivered to your cells where it is
used in cellular respiration
how breathing and cellular respiration are similar when it comes to CO2? - CORRECT
ANSWER-CO2 is a waste product of cellular respiration and, when discarded, it diffuses
from your cells to your blood and travels to your lungs, where it is exhaled
the "simple" name for glucose, which is a simple sugar, is ____________ - CORRECT
ANSWER-monosaccharide
__________, the _____________, & ____________ are the three main stages of the
many chemical reactions that make up cellular respiration - CORRECT ANSWER-
glycolysis, citric acid cycle, & electron transport
glycolysis begins respiration by breaking down ____________ into two molecules of a
__ -carbon molecule called __________ - CORRECT ANSWER-glucose; 3; pyruvate
the enzymes for glycolysis are located in the __________ - CORRECT ANSWER-
cytoplasm
Chapter 6 2025 PRACTICE TEST WITH
QUESTIONS AND GRADED ANSWERS
when there is enough oxygen reaching your cells to support their energy needs,
___________ is said to be ______________ - CORRECT ANSWER-metabolism;
aerobic
aerobic capacity - CORRECT ANSWER-the maximum rate at which O2 can be taken in
and used by your muscle cells (the most strenuous activity that your body can maintain
aerobically)
photosynthesis - CORRECT ANSWER-the process where plants convert the energy of
sunlight to the chemical energy of sugars and other organic molecules
autotrophs - CORRECT ANSWER-organisms that make all their own organic matter
from nutrients that are completely inorganic; "self-feeders"
____________, _____________, __________, & __________ are four examples of the
organic matter made by autotrophs - CORRECT ANSWER-carbohydrates, lipids,
proteins, & nucleic acids
heterotrophs - CORRECT ANSWER-organisms that cannot make organic molecules
from inorganic ones
heterotrophs get their food by _____________ in order to _______________ -
CORRECT ANSWER-eating organic material; get nutrients and provide energy for life's
processes
producers - CORRECT ANSWER-autotrophs
consumers - CORRECT ANSWER-heterotrophs
when your muscle cells don't have sufficient O2 they _____________________ -
CORRECT ANSWER-switch to an "emergency mode"
when your muscle cells switch into "emergency mode" they __________________ -
CORRECT ANSWER-break down glucose very ineffectively and produce lactic acids as
a by-product, causing impaired muscle activity
, the chemical ingredients for photosynthesis are _____________ & ____________ -
CORRECT ANSWER-carbon dioxide (CO2) & water (H2O)
carbon dioxide's role in photosynthesis - CORRECT ANSWER-it is a gas that passes
from the air into a plant via tiny pores
water's role in photosynthesis - CORRECT ANSWER-it is absorbed from the soil by the
plant's roots
chloroplasts - CORRECT ANSWER-organelles inside leaf cells that use light energy to
rearrange the atoms of CO2 and H2O to produce sugars
glucose - CORRECT ANSWER-C6-H12-O6
oxygen gas (O2) - CORRECT ANSWER-a by-product of photosynthesis that is released
through pores into the atmosphere
energy flows through the ecosystem by: - CORRECT ANSWER-entering as sunlight
and exiting as heat
cellular respiration is a(n) ________ process - CORRECT ANSWER-aerobic
cellular respiration - CORRECT ANSWER-the aerobic harvesting of chemical energy
from organic fuel molecules
how breathing and cellular respiration are similar when it comes to O2? - CORRECT
ANSWER-when breathing, you inhale O2 and it is delivered to your cells where it is
used in cellular respiration
how breathing and cellular respiration are similar when it comes to CO2? - CORRECT
ANSWER-CO2 is a waste product of cellular respiration and, when discarded, it diffuses
from your cells to your blood and travels to your lungs, where it is exhaled
the "simple" name for glucose, which is a simple sugar, is ____________ - CORRECT
ANSWER-monosaccharide
__________, the _____________, & ____________ are the three main stages of the
many chemical reactions that make up cellular respiration - CORRECT ANSWER-
glycolysis, citric acid cycle, & electron transport
glycolysis begins respiration by breaking down ____________ into two molecules of a
__ -carbon molecule called __________ - CORRECT ANSWER-glucose; 3; pyruvate
the enzymes for glycolysis are located in the __________ - CORRECT ANSWER-
cytoplasm
