HESI BIOLOGY A2 ACTUAL EXAM WITH VERIFIED ANSWERS. {GRADED A+}. NEW UPDATE. REAL EXAM!
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Course
HESI BIOLOGY A2
Institution
HESI BIOLOGY A2
HESI BIOLOGY A2 ACTUAL EXAM
WITH VERIFIED ANSWERS.
{GRADED A+}. NEW UPDATE.
REAL EXAM!
specific heat - ANS-the amount of heat necessary to raise the temperature of
1 gram of that molecule 1 degree celsius
water has high specific heat due to - ANS-the extent of hydrogen bonding
between wa...
HESI BIOLOGY A2 ACTUAL EXAM
WITH VERIFIED ANSWERS.
{GRADED A+}. NEW UPDATE.
REAL EXAM!
specific heat - ANS✔✔-the amount of heat necessary to raise the temperature of
1 gram of that molecule 1 degree celsius
water has high specific heat due to - ANS✔✔-the extent of hydrogen bonding
between water molecules, which allows waters to resist shifts in temperature
(ability of oceans or large bodies of water to stabilize climates)
cohesion - ANS✔✔-the ability of a molecule to stay bonded or attracted to
another molecule of the same substance (water running together on a newly
waxed car)
adhesion - ANS✔✔-the ability of water to bond to or attract other molecules or
substances (when water is sprayed onto the wall, some of it sticks to the wall)
when water freezes it forms - ANS✔✔-lattice crystals; causing the molecules to
spread apart, resulting in the phenomenon of ice floating
two distinct organelles that produce cell energy - ANS✔✔-1. mitochondria
(eukaryotic cells and are the site of cellular respiration/energy)
2. chloroplast (found in plants and are the site of photosynthesis)
, cellular membrane - ANS✔✔--consist of a bilayer of phospholipids with proteins,
cholesterol, and glycoproteins peppered throughout
-phospholipids are amphipathic molecules, creating a hydrophobic region
between the two layers making it selectively permeable
Adenosine triphosphate ATP - ANS✔✔-used as the energy currency of the cell
nicotinamide adenine dinucleotide NADH - ANS✔✔--acts as a reducing agent and
is a vehicle of stored energy
-used as a precursor to produce greater amounts of ATP in the final steps of
respiration
glycolysis - ANS✔✔--first step of metabolism of food cellular energy is the
conversion of glucose to pyruvate
-takes place in the cytosol of the cell and produces two molecules of ATP, two
molecules of pyruvate and two molecules of NADH
citric acid cycle (Krebs Cycle) - ANS✔✔--in step 2 the pyruvate is transported
into a mitochondrion and used in the first of series of reactions
-takes place in the mitochondria
-two ATP molecules, 6 molecules of carbon dioxide and 6 NADH molecules are
produced
polarity of water allows it to act as an - ANS✔✔-versatile solvent (used to
dissolve a number of different solvents)
carbohydrates - ANS✔✔-longs chains, or polymers of sugar
-used for storage, structure, and energy
-the backbone of important molecules such as DNA and RNA
lipids - ANS✔✔-known as fats, but specifically they are fatty acids,
phospholipids, and steroids
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