Human Biology Exam 1 Complete
Answers
(Choose all that apply) Which of the following statement(s) is/are correct about
Translation? - ANSWER-The tRNA molecules match their anticodons to the codons
of the mRNA molecules, the tRNA molecules carry the amino acids to the ribosomes
The process of DNA controlling the production of a protein is often referred to as -
ANSWER-gene expression
Which of the following statement(s) is/are correct about DNA replication? -
ANSWER-DNA replication requires energy, DNA replication is semi-conservative ,
DNA replication uses the complementary base pairing rules
When a human grows or repairs damaged tissue, which cellular process is used? -
ANSWER-mitosis
All chemical reactions in the human body that include build up or breakdown of
macromolecules are termed ____________. - ANSWER-metabolic reactions.
The proteins that catalyze chemical reactions in the body are called - ANSWER-
enzymes.
Activation energy is similar to the "push" needed to start rolling a stalled car down a
hill. How do enzymes fit into this analogy? - ANSWER-Enzymes decrease the effort
that's needed to start the car moving.
Chemical work can also be described by the word(s) - ANSWER-anabolism
What is the source of chemical energy used to power a muscle cell in your arm? -
ANSWER-adenosine triphosphate (ATP)
Which organelle performs photosynthesis? - ANSWER-Chloroplast
Assume that a plant is suffering from drought and is beginning to wilt. Which cell
component is most likely being affected, and what type of molecule is being lost from
this structure? - ANSWER-vacuole; water
Which of the following can't freely pass through a cell membrane without going
through a protein channel? - ANSWER-calcium ions
The movement of a substance OUT of a cell via a vesicle is called: - ANSWER-
exocytosis
How would amino acids from the bloodstream move across a cell membrane? -
ANSWER-facilitated diffusion
, Choose the statement(s) that is/are correct about facilitated diffusion. - ANSWER-no
energy is needed from the cell, the substance being moved is moving from an area
of high concentration to an area of low concentration, a protein carrier is used
The diffusion of water across a selectively permeable membrane is known as -
ANSWER-osmosis
Which of the following is a major component of a cell's plasma membrane? -
ANSWER-phospholipids
Which of the following requires the most ATP to move the molecule across a plasma
membrane? - ANSWER-an ion moving against a concentration gradient
Which of the following doesn't involve molecules moving across cell membranes? -
ANSWER-induced fit
What happens to the carbon dioxide produced from cellular respiration? - ANSWER-
It's converted to glucose by plants.
The basic formula for cellular respiration is - ANSWER-glucose + oxygen -> carbon
dioxide + water
In Aerobic respiration, most of the ATP's that are formed from the energy in the
glucose are formed during which phase? - ANSWER-Oxidative Phosphorylation
In Aerobic respiration, oxygen accepts the electrons and hydrogen ions during which
phase? - ANSWER-Oxidative Phosphorylation
If oxygen is not present human muscle cells cannot metabolize glucose. - ANSWER-
false
This process splits glucose into two smaller molecules called pyruvate. This process
occurs in the cytosol of the cell - ANSWER-glycolysis
This process occurs along the inner membrane of the mitochondria and is the actual
process making most of the ATP for a cell. - ANSWER-citric acid cycle
All cells have a cell membrane. This membrane is made of protein molecules and
molecules called __. - ANSWER-phospholipids
The organelle that performs protein synthesis. - ANSWER-ribosome
Everything inside of the cell membrane is called the _____. - ANSWER-cytoplasm
Another name for the cell membrane is the __ membrane. - ANSWER-Plasma
Fundamental forms of matter are composed of ______ that cannot be broken down
by normal physical means. - ANSWER-atoms
Answers
(Choose all that apply) Which of the following statement(s) is/are correct about
Translation? - ANSWER-The tRNA molecules match their anticodons to the codons
of the mRNA molecules, the tRNA molecules carry the amino acids to the ribosomes
The process of DNA controlling the production of a protein is often referred to as -
ANSWER-gene expression
Which of the following statement(s) is/are correct about DNA replication? -
ANSWER-DNA replication requires energy, DNA replication is semi-conservative ,
DNA replication uses the complementary base pairing rules
When a human grows or repairs damaged tissue, which cellular process is used? -
ANSWER-mitosis
All chemical reactions in the human body that include build up or breakdown of
macromolecules are termed ____________. - ANSWER-metabolic reactions.
The proteins that catalyze chemical reactions in the body are called - ANSWER-
enzymes.
Activation energy is similar to the "push" needed to start rolling a stalled car down a
hill. How do enzymes fit into this analogy? - ANSWER-Enzymes decrease the effort
that's needed to start the car moving.
Chemical work can also be described by the word(s) - ANSWER-anabolism
What is the source of chemical energy used to power a muscle cell in your arm? -
ANSWER-adenosine triphosphate (ATP)
Which organelle performs photosynthesis? - ANSWER-Chloroplast
Assume that a plant is suffering from drought and is beginning to wilt. Which cell
component is most likely being affected, and what type of molecule is being lost from
this structure? - ANSWER-vacuole; water
Which of the following can't freely pass through a cell membrane without going
through a protein channel? - ANSWER-calcium ions
The movement of a substance OUT of a cell via a vesicle is called: - ANSWER-
exocytosis
How would amino acids from the bloodstream move across a cell membrane? -
ANSWER-facilitated diffusion
, Choose the statement(s) that is/are correct about facilitated diffusion. - ANSWER-no
energy is needed from the cell, the substance being moved is moving from an area
of high concentration to an area of low concentration, a protein carrier is used
The diffusion of water across a selectively permeable membrane is known as -
ANSWER-osmosis
Which of the following is a major component of a cell's plasma membrane? -
ANSWER-phospholipids
Which of the following requires the most ATP to move the molecule across a plasma
membrane? - ANSWER-an ion moving against a concentration gradient
Which of the following doesn't involve molecules moving across cell membranes? -
ANSWER-induced fit
What happens to the carbon dioxide produced from cellular respiration? - ANSWER-
It's converted to glucose by plants.
The basic formula for cellular respiration is - ANSWER-glucose + oxygen -> carbon
dioxide + water
In Aerobic respiration, most of the ATP's that are formed from the energy in the
glucose are formed during which phase? - ANSWER-Oxidative Phosphorylation
In Aerobic respiration, oxygen accepts the electrons and hydrogen ions during which
phase? - ANSWER-Oxidative Phosphorylation
If oxygen is not present human muscle cells cannot metabolize glucose. - ANSWER-
false
This process splits glucose into two smaller molecules called pyruvate. This process
occurs in the cytosol of the cell - ANSWER-glycolysis
This process occurs along the inner membrane of the mitochondria and is the actual
process making most of the ATP for a cell. - ANSWER-citric acid cycle
All cells have a cell membrane. This membrane is made of protein molecules and
molecules called __. - ANSWER-phospholipids
The organelle that performs protein synthesis. - ANSWER-ribosome
Everything inside of the cell membrane is called the _____. - ANSWER-cytoplasm
Another name for the cell membrane is the __ membrane. - ANSWER-Plasma
Fundamental forms of matter are composed of ______ that cannot be broken down
by normal physical means. - ANSWER-atoms
