AC-HPAT Biology 2601 Midterm Exam #1 || All Questions & Answers (100% Correct)
AC-HPAT Biology 2601 Midterm Exam #1 || All Questions & Answers (100% Correct)
For one ectotherm, what should the sum of all heat inputs and outputs be? - ANSWER - The sum should be 0 - Radiation + Convection + Condu...
, AC-HPAT Biology 2601 Midterm Exam
#1 || All Questions & Answers (100%
Correct)
For one ectotherm, what should the sum of all heat inputs and outputs be? -
ANSWER - The sum should be 0 - Radiation + Convection + Conductance + Latent
Heat Exchange = 0
How do plants affect their leaf temperature? - ANSWER - Leaf colour alters radiation
absorption, shape affects convection
Where does ectotherm heat come from? - ANSWER - Futile cycling in plants and
muscle contractions in animals
Why do plants need metabolic heat? - ANSWER - Warm up tissues to a more
optimal temperature and to abstract pollinators in the early spring
Why do fish have a problem keeping the heat that they generate? - ANSWER -
Because they are surrounded by thermally-conductive water
Are fish endotherms or ectotherms? - ANSWER - They are ectotherms because they
lose heat to the environment very quickly
What is the most important biological process on earth? - ANSWER - Photosynthesis
Light-dependent reactions - ANSWER - Uses water to produces oxygen, uses ADP
and NADP+ to produce ATP and NADPH
Light-independent reactions - ANSWER - Uses CO2 to produce sugars, uses ATP
and NADPH to produce ADP and NADP+
Light = - ANSWER - Energy
Pigments - ANSWER - Molecules that absorb photons that all of photochemistry
relies on
What does the absorption of a photon do? - ANSWER - It increases the energy level
of the molecule
What is the energy stored in carbs used for? - ANSWER - Used to power cellular
processes in the plant and serves as energy resources for all forms of life
What happens within chloroplasts? - ANSWER - Chlorophylls absorb light energy for
the oxidation of water, releasing oxygen and generating NADPH and ATP
What are NADPH and ATP used for? - ANSWER - They are used to reduce carbon
dioxide to form sugars
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