IB Biology- Molecular Biology Exam Study Test.
Molecular biology - CORRECT ANSWER living processes in terms of chemicals involved
Carbon - CORRECT ANSWER forms many different compounds due to four available covalent bonds
metabolism - CORRECT ANSWER series of enzyme controlled reactions
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Molecular biology - CORRECT ANSWER living processes in terms of chemicals involved
Carbon - CORRECT ANSWER forms many different compounds due to four available covalent bonds
metabolism - CORRECT ANSWER series of enzyme controlled reactions
anabolism - CORRECT ANSWER synthesis of macromolecules from monomers via condensation which
produces water
catabolism - CORRECT ANSWER breaks down larger molecules into smaller monomers via hydrolysis-
this uses water
vitalism - CORRECT ANSWER the products and components of living organisms, such as urea, can only be
made by such.
Urea - CORRECT ANSWER through artificial synthesis of urea from inorganic chemicals, vitalism was
disproved
glucose - CORRECT ANSWER a monomer in a 6 carbon hexagonal shape
ribose - CORRECT ANSWER a monomer with a pentagonal shape- 4 carbon and a single oxygen
saturated fatty acid - CORRECT ANSWER long carbon chain with many hydrogen off shoots. At one end
double bond with O and OH groups
, generalised amino acid - CORRECT ANSWER N bonded with two H, C bonded with R side chain and H, C
bonded to OH group and double bond with O
hydrogen bonds - CORRECT ANSWER form between water molecules (O attracted to H due to polarity)
cohesive - CORRECT ANSWER water molecules stick to eachother
adhesion - CORRECT ANSWER water molecules stick to other substances
solvent - CORRECT ANSWER water can dissolve similarly polar substances and ions
specific heat capacity - CORRECT ANSWER amount of energy released or absorbed as water changes
state- for water this is high
boiling point - CORRECT ANSWER high for water at 100 due to strong hydrogen bonds
freezing point - CORRECT ANSWER water becomes less dense as gets closer to freezing point
hydrophobic - CORRECT ANSWER aversion to water
hydrophilic - CORRECT ANSWER attracted to water
methane - CORRECT ANSWER non-polar with weak forces with no H bonds, thus lower heat capacity,
lower melting and boiling points
coolant - CORRECT ANSWER water acts as a coolant when expelled from body. absorbs much more heat
energy to evaporate due to high specific heat capacity
solubility in water - CORRECT ANSWER Polar glucose is soluble in water. Amino acids generally are with
the ions of amino acid playing a part. Cholestrol has a non-polar tail and thus is insoluble. Fats too are
non-polar. Oxygen has limited solubility, thus the need for hemoglobin.
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