Biology 1002B: Midterm Exam with
Guaranteed Pass Solutions 2025-2026
Updated.
what is the function of light for life - Answer ultimate source fo energy for almost all
organisms
provides organisms with information about physical environment
what is chlamydomonas - Answer unicellular green algae
eukaryote
has one large chloroplast
has eyespot
has flagella
what organelles does chlamydomonas have - Answer vacuole
flagella
mitochondrion
eyespot
nucleus
chloroplast
chlamydomonas diagram - Answer
what does chlamy use the eyespot foe - Answer gather information about light intensity and
direction
,does chlamy do photosynthesis - Answer yes
electromagnetic radiation - Answer a form of energy that exhibits wavelike behavior as it
travels through space
light - Answer Visible illumination; a type of electromagnetic radiation, corresponding to a
small slice of wavelengths in the middle of the electromagnetic spectrum
relationship between wavelength and frequency - Answer inversely proportional
large wavelength - Answer low frequency
which color is lowest frequency - Answer red
small wavelength - Answer high frequency
what color is high frequency - Answer blue
what has to happen to light to be used as an energy source - Answer light must be absorbed
light is absorbed when - Answer energy of the photon is transferred to an electron within a
molecule
energy transfer excites electron
ground --> excited state
what is a pigment - Answer Light-absorbing molecule
What is chlorophyll? - Answer A green pigment found in the chloroplasts of plants, algae,
and some bacteria
what is chlorophyll a used for - Answer photosynthesis
what is retinal used for - Answer vision
,how are pigments able to capture light - Answer they have a region where carbon atoms are
covalently bonded to each other with alternating single and double bonds
conjugated system
delocalization of electrons
electrons available for absorbing energy
conjugated system - Answer double bonds separated by a single bond
what is the difference between pigments - Answer arrangement of conjugated system and
chemical structure
each pigment absorbs different wavelengths
in order for a photon to be absorbed - Answer energy of the photon must match exactly the
amount of energy needed move delocalized electron from ground to excited stated
if energy of photon does not match - Answer light not absorbed
what determines color of pigments - Answer ability to absorb certain wavelengths
Why is Chlamydomonas a model system - Answer it requires very little space for growth, has
a short generation time compared with higher plants, the nuclear and chloroplast genomes
have been sequenced and annotated, and new genes can be introduced into both these
genomes by transformation.
Is chlamydomonas unicellular or multicellular? - Answer unicellular
Is Chlamydomonas heterotrophic or autotrophic? - Answer autotrophic
is Chlamydomonas haplontic or diplontic - Answer haplontic
haplontic - Answer having a life cycle in which the main form is haploid, with a diploid zygote
being formed only briefly.
, diplontic - Answer describes a life cycle in which the diploid stage is the dominant stage
commitment phase - Answer commitment to divide
has to be large enough in size
what is needed for commitment - Answer large enough in size
growth independent phase - Answer can divide at this point
but can continue to grow
growth curve - Answer
what are the phases of the growth curve - Answer lag, exponential, stationary
lag phase - Answer A short period of time
prior to exponential growth
during which no, or very limited, cell division occurs.
exponential phase - Answer highest growth rate
exponential, straight growth
steeper= faster growth
what is the slope of a growth curve proportional to - Answer growth rate
what is used to calculate growth rate - Answer doubling/generation time
Chlamydomonas phylogeny - Answer diverged from plants
Guaranteed Pass Solutions 2025-2026
Updated.
what is the function of light for life - Answer ultimate source fo energy for almost all
organisms
provides organisms with information about physical environment
what is chlamydomonas - Answer unicellular green algae
eukaryote
has one large chloroplast
has eyespot
has flagella
what organelles does chlamydomonas have - Answer vacuole
flagella
mitochondrion
eyespot
nucleus
chloroplast
chlamydomonas diagram - Answer
what does chlamy use the eyespot foe - Answer gather information about light intensity and
direction
,does chlamy do photosynthesis - Answer yes
electromagnetic radiation - Answer a form of energy that exhibits wavelike behavior as it
travels through space
light - Answer Visible illumination; a type of electromagnetic radiation, corresponding to a
small slice of wavelengths in the middle of the electromagnetic spectrum
relationship between wavelength and frequency - Answer inversely proportional
large wavelength - Answer low frequency
which color is lowest frequency - Answer red
small wavelength - Answer high frequency
what color is high frequency - Answer blue
what has to happen to light to be used as an energy source - Answer light must be absorbed
light is absorbed when - Answer energy of the photon is transferred to an electron within a
molecule
energy transfer excites electron
ground --> excited state
what is a pigment - Answer Light-absorbing molecule
What is chlorophyll? - Answer A green pigment found in the chloroplasts of plants, algae,
and some bacteria
what is chlorophyll a used for - Answer photosynthesis
what is retinal used for - Answer vision
,how are pigments able to capture light - Answer they have a region where carbon atoms are
covalently bonded to each other with alternating single and double bonds
conjugated system
delocalization of electrons
electrons available for absorbing energy
conjugated system - Answer double bonds separated by a single bond
what is the difference between pigments - Answer arrangement of conjugated system and
chemical structure
each pigment absorbs different wavelengths
in order for a photon to be absorbed - Answer energy of the photon must match exactly the
amount of energy needed move delocalized electron from ground to excited stated
if energy of photon does not match - Answer light not absorbed
what determines color of pigments - Answer ability to absorb certain wavelengths
Why is Chlamydomonas a model system - Answer it requires very little space for growth, has
a short generation time compared with higher plants, the nuclear and chloroplast genomes
have been sequenced and annotated, and new genes can be introduced into both these
genomes by transformation.
Is chlamydomonas unicellular or multicellular? - Answer unicellular
Is Chlamydomonas heterotrophic or autotrophic? - Answer autotrophic
is Chlamydomonas haplontic or diplontic - Answer haplontic
haplontic - Answer having a life cycle in which the main form is haploid, with a diploid zygote
being formed only briefly.
, diplontic - Answer describes a life cycle in which the diploid stage is the dominant stage
commitment phase - Answer commitment to divide
has to be large enough in size
what is needed for commitment - Answer large enough in size
growth independent phase - Answer can divide at this point
but can continue to grow
growth curve - Answer
what are the phases of the growth curve - Answer lag, exponential, stationary
lag phase - Answer A short period of time
prior to exponential growth
during which no, or very limited, cell division occurs.
exponential phase - Answer highest growth rate
exponential, straight growth
steeper= faster growth
what is the slope of a growth curve proportional to - Answer growth rate
what is used to calculate growth rate - Answer doubling/generation time
Chlamydomonas phylogeny - Answer diverged from plants
