BOT3015 EXAM 3 2024/2025 ACTUAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS
WITH RATIONALES (VERIFIED ANSWERS) |ALREADY
GRADED A+
mineral elements
(inorganic nutrients) - Answer-1. Macronutrients: used by plants in greater amounts,
constitute 0.5%-0.3% of the dry weight of plant (N, K, Ca, P)
2. Micronutrients: needed by plant in very small amounts, few parts per million of dry
weight
(Na, Co)
/.Certain algae require - Answer-Vanadium, Silicon, Iodine
/.hydroponics - Answer-a technique of growing plants (without soil) in water containing
dissolved nutrients
/.Photosynthesis - Answer-the conversion of light energy into chemical energy, which
ultimately produces carbohydrate, with oxygen being released as a byproduct
water, carbon dioxide, and chlorophyll are essential
/.Respiration - Answer-Cellular breakdown of sugar and other foods, accompanied by
release of energy
in aerobic respiration, oxygen is utilized
/.Metabolism - Answer-the sum of all interrelated chemical processes occurring in a
living organism
/.Enzymes - Answer-proteins that speed up chemical reactions in cells without being
used up in the reactions
/.Anabolism - Answer-metabolic reactions in which chemical bonds are formed
/.Catabolism - Answer-metabolic reactions which require chemical bonds to be broken
/.Most reactions of photosynthesis are ____________ - Answer-anabolic
they involve construction of molecules that are stored for energy
, /.cellular respiration - Answer-metabolic process that involves the breakdown of
carbohydrates to release energy
/.Photosynthesis builds organic compounds by combining _________ - Answer-CO2,
H2O
forming carbohydrates
/.Respiration breaks down - Answer-carbohydrates producing CO2, H2O
/.oxidation-reduction reaction - Answer-chemical reactions involving gain or loss of
electrons to form a compound
/.Oxidation - Answer-is the loss of one or more electrons
/.Reduction - Answer-is the gain of one or more electrons
/.When an electron is removed a _______ may follow - Answer-proton
results in H atom being often removed during oxidation and added during reduction
/.Oxidations can occur without oxygen being involved - Answer-True
/.Oil and coil provide _____ of energy needed to power trains, ships, factories, etc -
Answer-90%
/.Worlds green organisms produce between 100 billion and 200 billion tos of sugur each
year - Answer-True
/.1st products of photosynthesis may be converted to - Answer-Disaccharides: sucrose
Polysaccharides: starch
/.Photosynthesis produces more than 94% of the dry weight of green organisms -
Answer-True
/.40-50% of oxygen in atmosphere originates in oceans and lakes - Answer-True
/.PCBs - Answer-industrial pollutants that stop certain algae from carrying on
photosynthesis
/.ATP - Answer-a molecule with 3 phosphate groups found i all living cells: it is the
principal vehicle for energy storage and exchange in cell metabolism
/.Our atmosphere is made up of - Answer-78% nitrogen
QUESTIONS AND CORRECT DETAILED ANSWERS
WITH RATIONALES (VERIFIED ANSWERS) |ALREADY
GRADED A+
mineral elements
(inorganic nutrients) - Answer-1. Macronutrients: used by plants in greater amounts,
constitute 0.5%-0.3% of the dry weight of plant (N, K, Ca, P)
2. Micronutrients: needed by plant in very small amounts, few parts per million of dry
weight
(Na, Co)
/.Certain algae require - Answer-Vanadium, Silicon, Iodine
/.hydroponics - Answer-a technique of growing plants (without soil) in water containing
dissolved nutrients
/.Photosynthesis - Answer-the conversion of light energy into chemical energy, which
ultimately produces carbohydrate, with oxygen being released as a byproduct
water, carbon dioxide, and chlorophyll are essential
/.Respiration - Answer-Cellular breakdown of sugar and other foods, accompanied by
release of energy
in aerobic respiration, oxygen is utilized
/.Metabolism - Answer-the sum of all interrelated chemical processes occurring in a
living organism
/.Enzymes - Answer-proteins that speed up chemical reactions in cells without being
used up in the reactions
/.Anabolism - Answer-metabolic reactions in which chemical bonds are formed
/.Catabolism - Answer-metabolic reactions which require chemical bonds to be broken
/.Most reactions of photosynthesis are ____________ - Answer-anabolic
they involve construction of molecules that are stored for energy
, /.cellular respiration - Answer-metabolic process that involves the breakdown of
carbohydrates to release energy
/.Photosynthesis builds organic compounds by combining _________ - Answer-CO2,
H2O
forming carbohydrates
/.Respiration breaks down - Answer-carbohydrates producing CO2, H2O
/.oxidation-reduction reaction - Answer-chemical reactions involving gain or loss of
electrons to form a compound
/.Oxidation - Answer-is the loss of one or more electrons
/.Reduction - Answer-is the gain of one or more electrons
/.When an electron is removed a _______ may follow - Answer-proton
results in H atom being often removed during oxidation and added during reduction
/.Oxidations can occur without oxygen being involved - Answer-True
/.Oil and coil provide _____ of energy needed to power trains, ships, factories, etc -
Answer-90%
/.Worlds green organisms produce between 100 billion and 200 billion tos of sugur each
year - Answer-True
/.1st products of photosynthesis may be converted to - Answer-Disaccharides: sucrose
Polysaccharides: starch
/.Photosynthesis produces more than 94% of the dry weight of green organisms -
Answer-True
/.40-50% of oxygen in atmosphere originates in oceans and lakes - Answer-True
/.PCBs - Answer-industrial pollutants that stop certain algae from carrying on
photosynthesis
/.ATP - Answer-a molecule with 3 phosphate groups found i all living cells: it is the
principal vehicle for energy storage and exchange in cell metabolism
/.Our atmosphere is made up of - Answer-78% nitrogen
