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AQA A-LEVEL BIOLOGY (NEW SPEC) UNIT 1A - BIOLOGICAL MOLECULES.ALL ANSWERS
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AQA A-LEVEL BIOLOGY (NEW SPEC) UNIT 1A - BIOLOGICAL MOLECULES.ALL ANSWERS
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AQA A-LEVEL BIOLOGY (NEW SPEC)UNIT 1A - BIOLOGICAL
MOLECULES.ALL ANSWERS
UPDATED
.
Monomers - correct answer-Small basic molecular units
n nn n n n n
Examples of monomers - correct answer-monosaccharides, amino acids and
n n n nn n n n n
nucleotides
n
Polymers - correct answer-Large complex molecules composed of long chains of
n nn n n n n n n n n
monomers joined together
n n n
Examples of polymers - correct answer-Carbohydrates, proteins and nucleic acids
n n n nn n n n n n
What type of sugar is glucose? - correct answer-Hexose
n n n n n n nn n
How many types of glucose are there? - correct answer-2
n n n n n n n nn n
, What are the names of the types of glucose? - correct answer-Alpha-glucose and
n n n n n n n n n nn n n
beta-glucose
n
Structure of Alpha Glucose - correct answer-
n n n n nn n
Structure of Beta Glucose - correct answer-
n n n n nn n
Are the types of glucose isomers? - correct answer-Yes
n n n n n n nn n
What is a condensation reaction? - correct answer-When 2 molecules join together
n n n n n nn n n n n n
with the formation of a new chemical bond, releasing a water molecule
n n n n n n n n n n n n
Condensation reactions join which molecules? - correct answer-Monosaccharides
n n n n n nn n
What type of chemical bond forms between 2 monosaccharides? - correct answer-
n n n n n n n n n nn n
Glycosidic
What is formed when 2 monosaccharides join together? - correct answer-
n n n n n n n n nn n
Disaccharide
Which 2 molecules make maltose? - correct answer-Alpha glucose and alpha
n n n n n nn n n n n
glucose
n
What is sucrose made from? - correct answer-Alpha glucose and fructose
n n n n n nn n n n n
Which 2 molecules make lactose? - correct answer-Alpha glucose and galactose
n n n n n nn n n n n
What is a hydrolysis reaction? - correct answer-When 2 molecules are broken apart
n n n n n nn n n n n n n
using a water molecule
n n n n
What is broken down by hydrolysis to form monosaccharides? - correct answer-
n n n n n n n n n nn n
Carbohydrates
Benedict's Test for Reducing Sugars I - correct answer-Add Benedict's reagent to a
n n n n n n nn n n n n n
sample and add it to a water bath which is boiling
n n n n n n n n n n n
Benedict's Test for Reducing Sugars II - correct answer-If the test is positive, it will
n n n n n n nn n n n n n n n
form a coloured precipitate, if it's negative, it'll stay blue
n n n n n n n n n n
Benedict's Test for Non-Reducing Sugars I - correct answer-Get a new sample of
n n n n n n nn n n n n n
the test solution, add DILUTE HCl and heat it in a water bath that has been brought
n n n n n n n n n n n n n n n n n
to the boil
n n n
Benedict's Test for Non-Reducing Sugars II - correct answer-Neutralise the solution
n n n n n n nn n n n
with sodium hydrogencarbonate
n n n
Benedict's Test for Non-Reducing Sugars III - correct answer-Carry out the
n n n n n n nn n n n
Benedict's test as normal
n n n n
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