Biology 1010 Exam 2 2026
Exam Questions and Correct
Answers | New Update
activation energy - ANSWER ✔✔the minimum amount of energy
required to start a chemical reaction
active site - ANSWER ✔✔The site on an enzyme that attaches to a
substrate.
active transport - ANSWER ✔✔energy-requiring process that moves
material across a cell membrane against a concentration difference
ADP - ANSWER ✔✔A molecule composed of adenosine and two
phosphate groups. The molecule ATP is made by combining a molecule
of ADP with a third phosphate in an energy-consuming reaction.
,ATP - ANSWER ✔✔A molecule composed of adenosine and three
phosphate groups; the main energy source for cells.
calorie - ANSWER ✔✔The amount of energy that raises the
temperature of 1 g of water by 1°C.
chemical energy - ANSWER ✔✔Energy stored in the chemical bonds
of molecules; a form of potential energy.
concentration gradient - ANSWER ✔✔An increase or decrease in the
density of a chemical substance within a given region. Cells often
maintain concentration gradients of hydrogen ions across their
membranes. When a gradient exists, the ions or other chemical
substances involved tend to move from where they are more
concentrated to where they are less concentrated.
conservation of energy - ANSWER ✔✔The principle that energy can
neither be created nor destroyed.
diffusion - ANSWER ✔✔The spontaneous movement of particles of
any kind down a concentration gradient; that is, movement of particles
from where they are more concentrated to where they are less
concentrated.endocytosis
, endocytosis - ANSWER ✔✔The movement of materials into the
cytoplasm of a cell via vesicles or vacuoles.
Energy - ANSWER ✔✔The capacity to perform work, or to move
matter in a direction it would not move if left alone.
Entropy - ANSWER ✔✔A measure of disorder, or randomness. One
form of disorder is heat, which is random molecular motion.
enzyme inhibitors - ANSWER ✔✔A chemical that interferes with an
enzyme's activity by changing the enzyme's shape, either by plugging up
the active site or binding to another site on the enzyme.
enzymes - ANSWER ✔✔A protein that serves as a biological catalyst,
changing the rate of a chemical reaction without itself being changed in
the process.
exocytosis - ANSWER ✔✔The movement of materials out of the
cytoplasm of a cell via membranous vesicles or vacuoles.
facilitated diffusion - ANSWER ✔✔The passage of a substance
across a biological membrane down its concentration gradient, aided by
specific transport proteins.
3
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
Exam Questions and Correct
Answers | New Update
activation energy - ANSWER ✔✔the minimum amount of energy
required to start a chemical reaction
active site - ANSWER ✔✔The site on an enzyme that attaches to a
substrate.
active transport - ANSWER ✔✔energy-requiring process that moves
material across a cell membrane against a concentration difference
ADP - ANSWER ✔✔A molecule composed of adenosine and two
phosphate groups. The molecule ATP is made by combining a molecule
of ADP with a third phosphate in an energy-consuming reaction.
,ATP - ANSWER ✔✔A molecule composed of adenosine and three
phosphate groups; the main energy source for cells.
calorie - ANSWER ✔✔The amount of energy that raises the
temperature of 1 g of water by 1°C.
chemical energy - ANSWER ✔✔Energy stored in the chemical bonds
of molecules; a form of potential energy.
concentration gradient - ANSWER ✔✔An increase or decrease in the
density of a chemical substance within a given region. Cells often
maintain concentration gradients of hydrogen ions across their
membranes. When a gradient exists, the ions or other chemical
substances involved tend to move from where they are more
concentrated to where they are less concentrated.
conservation of energy - ANSWER ✔✔The principle that energy can
neither be created nor destroyed.
diffusion - ANSWER ✔✔The spontaneous movement of particles of
any kind down a concentration gradient; that is, movement of particles
from where they are more concentrated to where they are less
concentrated.endocytosis
, endocytosis - ANSWER ✔✔The movement of materials into the
cytoplasm of a cell via vesicles or vacuoles.
Energy - ANSWER ✔✔The capacity to perform work, or to move
matter in a direction it would not move if left alone.
Entropy - ANSWER ✔✔A measure of disorder, or randomness. One
form of disorder is heat, which is random molecular motion.
enzyme inhibitors - ANSWER ✔✔A chemical that interferes with an
enzyme's activity by changing the enzyme's shape, either by plugging up
the active site or binding to another site on the enzyme.
enzymes - ANSWER ✔✔A protein that serves as a biological catalyst,
changing the rate of a chemical reaction without itself being changed in
the process.
exocytosis - ANSWER ✔✔The movement of materials out of the
cytoplasm of a cell via membranous vesicles or vacuoles.
facilitated diffusion - ANSWER ✔✔The passage of a substance
across a biological membrane down its concentration gradient, aided by
specific transport proteins.
3
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
