bio 1 lab final
Which of the following organisms cannot perform photosynthesis?
fungus
The Calvin Cycle is also known as
the dark reactions
photosynthesis equation
6CO2+6H2O+light energy yields C6H12O6+6O2
effect of humidity on photosynthesis
as humidity is increased, there is more water available and so photosynthetic rate will rise
Prokaryotic cell division is known as
binary fission
Which of the following would happen if you planted more trees and shrubs?
decrease in CO2
G1, S and G2 make up this portion of the cell cycle:
interphase
MPF levels in the cell are highest during this phase:
interphase
Chromosomes become visible during this phase:
prophase
relationship between photosynthesis and cellular respiration?
the equations are inverse. photosynthesis's products are the reactants of cellular respiration and vice versa.
what links first and second reactions of photosynthesis?
the products of the first reaction are used in the second reaction.
Where are the photosystems located?
thylakoid membranes
This portion of the light spectrum supplies the energy for photosynthesis.
visible
What molecule does the oxygen released in photosynthesis originate from?
water
Eukaryotic cells spend the majority of their cell cycle in this phase:
G1 phase
what is a carotenoid?
a carotenoid is an accessory pigment which absorbs green/blue, reflects yellow/orange/red
what is a pigment? major photosynthetic pigment?
a pigment absorbs wavelengths of light and reflects other wavelengths of light. the main photosynthetic pigment is chlorophyll.
what is an action spectrum and an absorption spectrum?
an action spectrum graphs the effectiveness of different wavelengths in driving photosynthesis. an absorption spectrum graphs the light absorption versus wavelength.
effect of CO2 availability on photosynthesis
an increase in CO2 usually will lead to an increase in the photosynthetic rate
effect of light on photosynthesis
an increase in light will increase the rate of photosynthesis. inversely, a decrease in light will lead to a decrease in photosynthetic rate.
Sister chromatids are separated and chromosomes are pulled to opposite poles of the cell during this phase:
anaphase
Out of the following list, what color of light is absorbed MOST by a plant?
blue
Sections of DNA that code for traits in an organism are called:
genes
What are the two products produced during photosynthesis?
glucose and oxygen
Which of the following colors would be least effective in driving photosynthesis in a plant with chlorophyll a molecules?
green
products of 2 photosynthesis reactions
light dependent reactions produce ATP and NADPH. Light independent reactions produce glucose.
2 main photosynthesis reactions? where do they take place?
light dependent reactions take place in thylakoid membranes. light independent reactions take place in the stroma
Chromosomes line up along the equator of the cell during this phase:
metaphase
Spindle fibers are composed of:
microtubules
effect of rainfall on photosynthesis
more rain means more water. this will increase the photosynthetic rate. however, if too much water the roots get clogged and the photosynthetic rate will drop.
Microtubules extend and begin to form the mitotic spindle during this phase:
prophase
These pores allow the exchange of gases between the plant and the atmosphere.
stomata
difference between the stroma and stoma?
stroma is the inner matrix of chloroplasts. stoma is the opening in leaves where gas can enter or leave.