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Biol 203 Exam 2 With Complete Solutions
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Nutrition - Answer Process by which nutrients are acquired from
the environment and used in cellular activities.
Macronutrients - Answer Required in large quantities; play principal
roles in cell structure and metabolism (proteins, carbohydrates)
Essential Nutrients - Answer Must be provided to an organism. Two
categories: macronutrients and Micronutrients (trace elements)
Organic Nutrients - Answer contain carbon and hydrogen atoms
and are usually the product of living things (methane, carbohydrates,
lipids, proteins, and nucleic acids)
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Inorganic Nutrients - Answer Atom or molecule that contains a
combination of atoms other than carbon and hydrogen (metals and
their salts, gases and water)
Heterotroph - Answer Must obtain carbon in an organic form made
by other living organisms (proteins, carbohydrates, lipids, and nucleic
acids)
Autotroph - Answer An organism that uses CO2, an inorganic gas as
its carbon source (not nutritionally dependent on other living things)
Chemotroph - Answer Gains energy from chemical compounds
Phototroph - Answer Gains energy through photosynthesis
Active Transport - Answer Requires energy and carrier proteins;
gradient independent. Forms of active transport: carrier mediated,
group translocation, endocytosis/bulk transport. Note: transport is the
movement of chemicals across the cell membrane.
Passive Transport - Answer Does not require energy; substances
exist in a gradient and move from areas of higher concentration toward
areas of lower concentration. Forms of passive transport: diffusion,
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osmosis, facilitated diffusion. Note: transport is the movement of
chemicals across the cell membrane.
Diffusion - Answer The molecule passes from one side of the
membrane with no assistance via protein or ATP. It is naturally traveling
from an area of high concentration to low concentration
Osmosis - Answer Water passes through the membrane from an
area of high water concentration (low solute concentration) to an area
of low water concentration (high solute concentration.)
Facilitated Diffusion - Answer A molecule passes through a
membrane with the help of a carrier protein. No ATP is involved and it
travels from an area of high concentration to low concentration, but
the molecule is too large, bulky, polar, or charged and cannot pass
through the phospholipid portion of the membrane.
Carrier Mediated Transport - Answer Special solute binding proteins
pick up the molecule and bring them to a transporter protein located in
the membrane. ATP is used to pump the molecule through the
transporter protein.
Group Translocation - Answer A molecule is captured by a protein
carrier and modified as it passes through the membrane.
PASS! 2026/2027
Biol 203 Exam 2 With Complete Solutions
100% Pass 2026 Update
EMAIL ME FOR MORE INFO :
Nutrition - Answer Process by which nutrients are acquired from
the environment and used in cellular activities.
Macronutrients - Answer Required in large quantities; play principal
roles in cell structure and metabolism (proteins, carbohydrates)
Essential Nutrients - Answer Must be provided to an organism. Two
categories: macronutrients and Micronutrients (trace elements)
Organic Nutrients - Answer contain carbon and hydrogen atoms
and are usually the product of living things (methane, carbohydrates,
lipids, proteins, and nucleic acids)
,INSTANT
PASS! 2026/2027
Inorganic Nutrients - Answer Atom or molecule that contains a
combination of atoms other than carbon and hydrogen (metals and
their salts, gases and water)
Heterotroph - Answer Must obtain carbon in an organic form made
by other living organisms (proteins, carbohydrates, lipids, and nucleic
acids)
Autotroph - Answer An organism that uses CO2, an inorganic gas as
its carbon source (not nutritionally dependent on other living things)
Chemotroph - Answer Gains energy from chemical compounds
Phototroph - Answer Gains energy through photosynthesis
Active Transport - Answer Requires energy and carrier proteins;
gradient independent. Forms of active transport: carrier mediated,
group translocation, endocytosis/bulk transport. Note: transport is the
movement of chemicals across the cell membrane.
Passive Transport - Answer Does not require energy; substances
exist in a gradient and move from areas of higher concentration toward
areas of lower concentration. Forms of passive transport: diffusion,
, INSTANT
PASS! 2026/2027
osmosis, facilitated diffusion. Note: transport is the movement of
chemicals across the cell membrane.
Diffusion - Answer The molecule passes from one side of the
membrane with no assistance via protein or ATP. It is naturally traveling
from an area of high concentration to low concentration
Osmosis - Answer Water passes through the membrane from an
area of high water concentration (low solute concentration) to an area
of low water concentration (high solute concentration.)
Facilitated Diffusion - Answer A molecule passes through a
membrane with the help of a carrier protein. No ATP is involved and it
travels from an area of high concentration to low concentration, but
the molecule is too large, bulky, polar, or charged and cannot pass
through the phospholipid portion of the membrane.
Carrier Mediated Transport - Answer Special solute binding proteins
pick up the molecule and bring them to a transporter protein located in
the membrane. ATP is used to pump the molecule through the
transporter protein.
Group Translocation - Answer A molecule is captured by a protein
carrier and modified as it passes through the membrane.
