Photosynthesis Flashcards
(29 cards)
what is photoautotroph ?
Photoautotrophs are organism that gather energy directly from light and use it to assimilate small inorganic molecules into their own tissues.
what is heterotroph ?
Heterotrophs are organisms that cannot do this but instead take in organic molecules and respire them, obtaining the energy available in them.
what is holoparasites ?
Differences between photoautotroph vs heterotroph ?
from plant’s viewpoint, how many types of light ?
From a plant’s viewpoint, light has three important properties: (1) quality, (2) quantity, and (3) duration.
Describes types of light ?
Quality of sunlight refers to the colors or wavelengths it contains.
• Quantity of light, which refers to light intensity or brightness, is affected by several factors.
• The duration of sunlight refers to the number of hours per day that sunlight is available.
what color will plant receive when it growing in the shade of other plants ?
Plants growing in the shade of other plants receive not only dim light, but light depleted of red and blue.
Does all leaves receive equal amount of sunlight? How can color indicate?
Not all leaves of a tree receive equal amounts of light; this self- shading is more severe in latitudes farther away from the equator. Colors indicate the percentage of full sunlight that reaches the various parts of a tree.
where does algae perform photosynthesis ?
underwater
how kelps grow? what color does it receive? what color does it appear?
Many kelps (brown algae) grow in deep ocean water and receive mostly green and blue tight. Their accessory pigments absorb these wavelengths; therefore, the kelps appear yellow-brown to us.
why kelps can perform photosynthesis ?
because there’s blue and green light that flex to the water
what is respiration ?
Respiration is essentially the release of energy from glucose molecules that are broken down to individual carbon dioxide molecules.
equation of phtosynthesis ?
equation of aerobic respiration ?
equation of anaerobic respiration ?
difference between photosynthesis and respiration ?
difference between photosynthesis and respiration ?
what color of the maximum absorption of the chlorophylls ?
The maximum absorption of the chlorophylls is in the blue and red wavelengths.
what color of the maximum absorption of the carotenoids ?
The maximum absorption of the carotenoids is in the blue-green to green parts of the visible spectrum.
what are the benefits of chlorophyll ?
antioxidant activity
anticancer activity
anti-inflammation
what is carotenoid? / role of carotenoid? / what do carotenoid do ?
Carotenoids is important in absorbing excessive light and thus protecting chlorophylls.
how many types of carotenoid ?
There are two types of carotenoids: Carotenes lack oxygen, but xanthophylls (such as lutein) have it. Both are accessory pigments that protect the chlorophyll from excess sunlight.
what is beta-carotene? role of it?
• Beta-Carotene is a naturally-occurring retinol (vitamin A) precursor obtained from certain fruits and vegetables with potential antineoplastic and chemopreventive activities.
• As an antioxidant, beta carotene inhibits free-radical damage to DNA.
• This agent also induces cell differentiation and apoptosis of some tumor cell types, particularly in early stages of tumorigenesis, and enhances immune system activity by stimulating the release of natural killer cells, lymphocytes,
and monocytes.
what is primary metabolites ?
• Primary metabolites are compounds/products produced
continuously during the phase of growth and development and are involved in primary metabolic processes such as respiration and photosynthesis.
