Energy
Objects that are moving are said to possess....
A) stored energy.
B) chemical energy.
C) potential energy.
D) kinetic energy.
D) kinetic energy.
What is the name of the part of the plant responsible for gas exchange?
A) stroma
B) stoma
C) matrix
B) stoma
How many net ATP molecules are made in glycolysis?
A) 38
B) 2
C) 34
D) 1
E) 6
B) 2
Catalysts act to
A) reduce the amount of products.
B) reduce the amount of activation energy.
C) increase the amount of reactants.
D) increase the amount of activation energy
B) reduce the amount of activation energy.
Entropy is a measure of__________ in a closed system.
A) kinetic energy
B) chemical energy
C) disorder
D) potential
C) disorder
Plants absorb blue and__________ light, and reflect__________ light.
A) green; violet
B) violet; red
C) red; green
D) green; red
C) red; green
Oxidative metabolism takes place in what organelles of the cell?
A) endoplasmic reticulum
B) Golgi complex
C) nucleus
D) mitochondria
D) mitochondria
25) Molecules that result after a chemical reaction occurs are called
A) reactants.
B) products.
C) catalysts.
D) substrates.
B) products.
A catabolic reaction:
A) breaks molecules apart while releasing energy
B) is an exothermic reaction that adds heat
C) builds molecules while putting energy into the system
A) breaks molecules apart while releasing energy
Within chloroplasts, the fluid-like matrix in which the Calvin cycle occurs is called the
A) mesophyll.
B) thylakoids.
C) stroma.
D) granum.
C) stroma.
Energy released by the electron transport chain is used to pump H+ ions into which location?
A) mitochondrial intermembrane space
B) mitochondrial matrix
C) cytoplasm
A) mitochondrial intermembrane space
The enzyme responsible for converting pyruvate to acetyl CoA is called
A) ATP synthase.
B) pyruvate dehydrogenase.
C) phosphofructokinase
B) pyruvate dehydrogenase.
What does the first law of thermodynamics state?
A) Energy can be changed from one form to another, but cannot be created or destroyed.
B) When energy is used, it is destroyed, but solar energy creates new energy for ecosystems.
C) Energy cycles through organisms and then is returned to plants by decomposition.
D) Energy is constantly being created by entropy events.
A) Energy can be changed from one form to another, but cannot be created or destroyed.
What are the products of the light-dependent reactions that will be used in the Calvin cycle?
A) ATP and NADPH
B) NADPH and oxygen
C) CO2 and oxygen
D) ATP and CO2
A) ATP and NADPH
Select the correct sequence of molecules produced and stages of cellular respiration during the metabolism of glucose.
A) glycolysis → acetyl-CoA → pyruvate → electron transport chain → Krebs cycle
B) glycolysis → acetyl-CoA → pyruvate → Krebs cycle → electron transport chain
C) glycolysis → pyruvate → acetyl-CoA → electron transport chain → Krebs cycle
D) glycolysis → pyruvate → acetyl-CoA → Krebs cycle → electron transport chain
D) glycolysis → pyruvate → acetyl-CoA → Krebs cycle → electron transport chain
Cocaine binds to the same spot on a receptor as norepinephrine and blocks norepinephrine from binding and working. This is an example of:
A) competitive activation
B) non-competitive inhibition
C) competitive inhibition
C) competitive inhibition
When substrate-level phosphorylation occurs,
A) ATP is converted into ADP plus a phosphate group.
B) NADH is converted into NAD+ + H+.
C) ADP is converted into ATP by addition of a phosphate group.
D) NAD+ is converted into NADH.
E) AMP is converted into NADH by adding a phosphate group.
C) ADP is converted into ATP by the addition of a phosphate group.
Most of atmospheric oxygen is produced as a result of photosynthesis. From which of the following molecules is the oxygen derived?
A) glucose
B) carbon dioxide
C) chlorophyll
D) water
D) water
During the citric acid cycle, also called the Krebs cycle, how many ATP are created from the breakdown of a single acetyl-CoA?
A) 3
B) 24
C) 2
D) 1
D) 1
As you increase the concentration of a non-competitive inhibitor, what does that do to the velocity of a reaction and why?
A) it reduces the velocity by binding to the active site and preventing the substrate from binding
B) it reduces the velocity by decreasing the amount of available enzymes
C) it increases the velocity by activating the active site
B) it reduces the velocity by decreasing the amount of available enzymes