Biology A 2021 - Unit 5 Lessons
Which statements correctly describe enzymes?
They only react with a specific substrate. They speed up chemical reactions.
ADP is a molecule related to the energy-storing ATP and it is repeatedly regenerated back into ATP by having a phosphate group added to it.
True
Which statements describe the cardiovascular system?
0.67 It transports nutrients and oxygen to the body's cells. It is composed of the heart, blood, and blood vessels
Study the image.https://cdstools.flipswitch.com/asset/media/1156791Which labeled part is the active site?
B
What tests can be used to diagnose phenylketonuria?
blood tests genetic tests
Which category of macromolecule does ATP belong to?
nucleotide
What results at the end of biochemical reactions that involve enzymes?
products
Which components are part of ATP's structure?
ribose adenine phosphate groups
Why is energy released from food molecules in stages, rather than all at once?
to prevent energy loss as wasted heat
Lesson 22
Making Cells Work
How are the waste products of respiration removed?
0.25 Oxygen molecules are removed by the cardiovascular system. The cardiovascular system transports waste products from cells to other systems. 0.25 Carbon dioxide is removed by respiratory organs. Oxygen molecules are removed by the cardiovascular system.
An enzyme catalyzes a chemical reaction, where A and B are joined to yield C.
A and B are reactants.
What molecule is used to power cellular processes in cells?
ATP
What is the role of ATP in transport across a cell membrane?
ATP is an energy molecule that helps with active transport.
Lesson 23
Aerobic Respiration Overview
What statement is true about the relationship between ADP and ATP?
Another phosphate group can be added to ADP to regenerate ATP.
What happens when ATP reacts with water to form ADP and a phosphate group?
Energy is released.
Identify the correct equation for aerobic respiration.
Glucose + Oxygen →→ Carbon Dioxide + Water + Energy
What can be said about phenylketonuria?
It causes excess phenylalanine accumulation. It is caused by a mutation on the PAH gene.
What is the role of respiration in living organisms?
It provides the energy needed by cells.
What is the role of respiration in living organisms?
It transforms the energy in food into energy that can be used by cells.
Which statements describe what happens when enzymes are added to a chemical reaction?
The activation energy is lowered. The chemical reaction is sped up.
What is the relationship between the cardiovascular system and respiration?
The cardiovascular system delivers oxygen and nutrients necessary for respiration to the cells.
What is the importance of respiration?
XXX It transports oxygen from the air to the cells. XXX It builds glucose molecules that are needed for producing energy in cells.
What is a metabolic pathway?
a series of enzymatic reactions where products become the reactants for the next step
What do enzymes react with?
a specific substrate
The following details describe a cell's energy process. involves a breakdown of glucose produces carbon dioxide and ATP occurs in both the cytoplasm and mitochondria Which process is being described?
aerobic respiration
Where does glycolysis occur in the cell?
cell cytoplasm
What are the stages of aerobic respiration?
citric acid cycle glycolysis electron transport chain
What systems supply food and oxygen needed for respiration?
digestive, respiratory, and cardiovascular
Which option lists the stages of aerobic respiration in the correct order?
glycolysis, citric acid cycle, electron transport chain
Where is amylase produced in the human body?
in the salivary glands and pancreas
