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CH.10 AP BIO (PHOTOSYNTHESIS) QUESTIONS WITH ACCURATE ANSWERS
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CH.10 AP BIO (PHOTOSYNTHESIS) QUESTIONS WITH ACCURATE ANSWERS
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CH.10 AP BIO (PHOTOSYNTHESIS) QUESTIONS WITHACCURATE ANSWERS
Photosynthesis Accurate Answer - process by which plants and some
other organisms use light energy to convert water and carbon dioxide into
oxygen and high-energy carbohydrates such as sugars and starches
C4 Plants Accurate Answer - A plant that changes CO2 into a four
carbon compound before entering the Calvin cycle for photosynthesis, is
related to their unique leaf anatomy( 2 distinct bundle sheath cells and
looselty arranges mesophyll cells), CO2 is incorporated into the mesophyll
cells and PEP Carboxylase. (Sugarcane, Corn most Grasses)
Consumers Accurate Answer - an organism that obtains energy and
nutrients by feeding on other organisms or their remains.
Autotrophs Accurate Answer - organisms that use energy from
sunlight or from chemical bonds in inorganic substances to make organic
compounds, and are thefore called producers.
Heterotrophs Accurate Answer - An organism that obtains organic
food molecules by eating other organisms or their by-products, and are
therefore consumers.
Chloroplasts Accurate Answer - An organelle found only in plants and
photosynthetic protists that absorbs sunlight and uses it to drive the synthesis
of organic compounds from carbon dioxide and water.
Chlorophyll Accurate Answer - a green pigment that is present in most
plant cells, that gives plants their characteristic green color, and that reacts
with sunlight, carbon dioxide, and water to form carbohydrates, found mainly
in the cells of the mesophyll
Mesophyll Accurate Answer - The ground tissue of a leaf, sandwiched
between the upper and lower epidermis and specialized for photosynthesis
because it contains most of the chlorophyll.
, Stomata Accurate Answer - A microscopic pore surrounded by guard
cells in the epidermis of leaves and stems that allows gas exchange and some
water vapor exchange .
Stroma Accurate Answer - The fluid of the chloroplast surrounding the
thylakoid membrane; involved in the synthesis of organic molecules from
carbon dioxide and water. (Where Calvin Cycle takes place).
Thylakoids Accurate Answer - A flattened membrane sac inside the
chloroplast, used to convert light energy to chemical energy
Thylakoid Space Accurate Answer - space within each thylakoid which
is thought to be connected to the space within every other thylakoid
Grana Accurate Answer - A stacked portion of the thylakoid membrane
in the chloroplast. Grana function in the light reactions of photosynthesis
Guard cells Accurate Answer - Specialized cells in the epidermis of the
leaf that control the opening and closing of stomata by responding to changes
in water pressure.
Lignin Accurate Answer - A hard material embedded in the cellulose
matrix of vascular plant cell walls that functions as an important adaptation
for support in terrestrial species.
Van Niel Accurate Answer - (Last name) Hypothesized that oxygen was
released from water, not carbon dioxide, by using the fact that some bacteria
use H2S instead of Water for photsynthesis., 20 years after scientists used a
oxygen 18 as a radiotracer.
Light Reactions Accurate Answer - The steps in photosynthesis that
occur on the thylakoid membranes of the chloroplast and that convert solar
energy to the chemical energy of ATP and NADPH, evolving oxygen in the
process.
Calvin Cycle Accurate Answer - Also known as the dark reactions, , The
second of two major stages in photosynthesis (following the light reactions),
involving atmospheric CO2 fixation and reduction of the fixed carbon into
carbohydrate by addition of electrons (Occurs in the Stroma)
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