A single regulatory molecule can shut down multiple metabolic pathways if it is able to
A producer organism is called a “producer” because it produces
A useful way for a cell biologist to de ne energy is
An allosteric enzyme
An ATP molecule carries potential energy in the easily broken bond
An excess amount of product accumulates at the end of a metabolic pathway. The product then binds to the allosteric site of the rst enzyme along the pathway shutting down the pathway. We call this process
Autotrophic organisms are supportive of man. They
DNA contains two chains of nucleotides in which ______ and ______ alternate in supporting each chain structurally.
DNA is stored within the ____________ of a cell in a __________ ber called chromatin.
Each wavelength of light has its own
Enzymes lower activation energies by
Existing chemical bonds between atoms are broken and new ones are formed between different atoms. This process
For most chemical reactions in the non‐living world, the energy required to break bonds in the reactant molecules
Griffith exposed weak living bacteria to just the uids from dead virulent bacteria. Some of these weak bacteria became virulent and could now kill mice. What control experiment did he do to argue that his weak bacteria changed to virulence in these studies?
If the final end product of a metabolic pathway is continually removed and used elsewhere then
If the final product of a metabolic pathway begins to build up in excess, the pathway can often be slowed down by a process called
If the nal product of a metabolic pathway begins to build up in excess, the pathway can often be slowed down by a process called
In a crowded, unventilated room, the temperature rises because
In respiration, chemical energy is transferred from glucose to ATP. The energy transfer however, is not 100% e cient. In the transfer, some of the energy is lost as
In the chloroplast, light dependent reactions take place in the __________________ while light independent reactions take place in the
In the process of glycolysis one molecule of _______ is converted to two molecules of
is a reactant in the process of aerobic respiration and _______ is a product of the same process.
Light dependent reactions are carried out both on and in between photosystems. This process is like the last stage of aerobic respiration in that both
On a cold day, your cells depend on ________ to maintain an operating temperature of 37 degrees Celsius.
One of the laws governing the behavior of energy in living things describes energy conversion as inefficient, with much energy being lost in the form of
organisms build their own energy‐rich molecules using solar energy.
Physicists define energy as
Plants are considered autotrophic because their cells contain
Producer organisms convert _______ energy to chemical energy—the energy of C―H and C―O―H bonds.
Reactants like hydrogen and oxygen molecules and are converted into a product like water molecules in the course of
The activation energy of a reaction can be lowered if the reaction is catalyzed by
The energy storage molecule that connects endergonic and exergonic reactions, driving endergonic reactions forward, is
The immediate product of photosynthesis, three‐carbon PGALs
The Krebs cycle’s NADH products are of value because
The overall process that uptakes energy‐poor molecules (CO2 and H2O) from their reservoirs in nature and converts them into energy‐rich molecules is
The physicist’s de nition of energy is _______________ for use in de ning energy changes within a living cell.
The process of aerobic respiration begins with
The structure of DNA was unraveled using
The three metabolic pathways that make up aerobic respiration are really all parts of one larger pathway because
The value of the three stages of aerobic respiration is their ability to break down glucose, a single molecule, with the resultant production of about
Three phosphate groups linked to a ribose sugar which, in turn, is linked to a pyrimidine base known as adenine: this phrase describes the structure of
When activation energy is not available for a given chemical reaction
When light of the correct wavelength hits a photosynthetic pigment molecule
When your car engine burns the octane in gasoline, at least 50% of the energy of the octane
Which of the following features of glycolysis is a value to the cell?
Which of the following is a stage of aerobic respiration?