4.3 ATP Flashcards
What organelle in the cell often releases ATP?
The mitochondria
What does ATP Hydrolysis do?
Release energy
What does ATP synthesis do?
Produce ATP
When does ATP release energy?
When a covalent bond between two phosphates break
What are the three main parts of an ATP?
ATP is a nucleotide consisting of ribose, a nitrogenous base, and three phosphate groups.
How does hydrolysis of ATP supply energy for cellular functions?
Hydrolysis breaks the unstable bond between the second and third phosphate group which releases energy
What molecule temporarily stores energy in cells?
ATP
What reaction releases a large amount of energy that the cell can use to do work?
hydrolysis of ATP to form ADP
An ATP molecule is unstable and primed to release energy because its ______ groups are negatively charged and repel each other.
Carboxyl, R, Amino, or Phosphate?
Phosphate groups
When the endmost phosphate group is removed from ATP, what molecule is produced?
ADP
Select all of the following that describe endergonic reactions.
cellular respiration is an example
require an input of energy
products contain more energy than the reactants
photosynthesis is an example
release energy
photosynthesis is an example
require an input of energy
products contain more energy than the reactants
Select all of the cellular processes that require ATP.
moving chromosomes in cell division
diffusion of substances down their concentration gradient
synthesizing large molecules
active transport of substances across the membrane
moving chromosomes in cell division
synthesizing large molecules
active transport of substances across the membrane
Removal of an electron is oxidation or reduction?
Oxidation
A phosphate group can be added to ADP to form what?
ATP
Where is the most energy stored in an ATP molecule?
covalent bonds between phosphates
