Bio 1201 Final QUESTIONS AND ANSWERS
How do cells regulate the production of enzymes
through feedback inhibition and gene regulation
what is the operon model
a mechanism for control of gene regulation
what charge do neutrons have
no charge (neutral)
how are protons charged
positively
how are electrons charged
negatively
how is the atomic mass calculated
protons + neutrons
how is the atomic number calculated
number of protons
are atomic mass and mass number the same
yes
what is dehydration
synthesizing of a polymer
what is hydrolysis
the breaking down of a polymer
what are the molecular formulas for carbohydrates
multiples of (CH2O)n
when is a disaccharide formed
when a dehydration reaction joins two monosaccharides
do lipids include true polymers
no
what are some examples of lipids
, fats, phospholipids, steroids
what do chromosomes do
carry genes
What do ribosomes do?
make proteins
what is the plasma membrane
a selective barrier that allows sufficient passage of oxygen, nutrients, and waste to
service the volume of every cell
what does the nuclear envelope do
encloses the nucleus, separating it from the cytoplasm
what do all stimuli represent
forms of energy
what do sensory receptors do
Convert a stimulus to an Intracellular response
when happens when a stimulus is processed by the nervous system
a motor response is generated
what is sensory reception
the dection of stimuli by sensory reseptors
what are sensory receptors
sensory neurons or cells that are able to respond to environmental stimuli
what is sensory transduction
the conversion of stimulus energy into a change in the membrane
What is a receptor potential?
change in membrane potential
what are perceptions
the brains construction of stimuli
how do stimuli from different sensory receptors travel
along dedicated neural pathways
how does the brain distinguish stimuli from different receptors
based on the path the action potentials arrive
what is amplification
How do cells regulate the production of enzymes
through feedback inhibition and gene regulation
what is the operon model
a mechanism for control of gene regulation
what charge do neutrons have
no charge (neutral)
how are protons charged
positively
how are electrons charged
negatively
how is the atomic mass calculated
protons + neutrons
how is the atomic number calculated
number of protons
are atomic mass and mass number the same
yes
what is dehydration
synthesizing of a polymer
what is hydrolysis
the breaking down of a polymer
what are the molecular formulas for carbohydrates
multiples of (CH2O)n
when is a disaccharide formed
when a dehydration reaction joins two monosaccharides
do lipids include true polymers
no
what are some examples of lipids
, fats, phospholipids, steroids
what do chromosomes do
carry genes
What do ribosomes do?
make proteins
what is the plasma membrane
a selective barrier that allows sufficient passage of oxygen, nutrients, and waste to
service the volume of every cell
what does the nuclear envelope do
encloses the nucleus, separating it from the cytoplasm
what do all stimuli represent
forms of energy
what do sensory receptors do
Convert a stimulus to an Intracellular response
when happens when a stimulus is processed by the nervous system
a motor response is generated
what is sensory reception
the dection of stimuli by sensory reseptors
what are sensory receptors
sensory neurons or cells that are able to respond to environmental stimuli
what is sensory transduction
the conversion of stimulus energy into a change in the membrane
What is a receptor potential?
change in membrane potential
what are perceptions
the brains construction of stimuli
how do stimuli from different sensory receptors travel
along dedicated neural pathways
how does the brain distinguish stimuli from different receptors
based on the path the action potentials arrive
what is amplification
