IGCSE Biological molecules
Authored by le khanh
Biology
9th Grade
NGSS covered
Used 134+ times
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26 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Small molecules are used as the basic units in the synthesis of large food molecules. Which statement is correct?
Amino acids are basic units of carbohydrates.
Fatty acids are basic units of glycogen.
Glycerol is a basic unit of oils.
Simple sugar is a basic unit of protein.
Tags
NGSS.HS-LS1-6
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When a substance is added to meat, amino acids are produced. What is this substance?
a hormone
an enzyme
an oil
water
Tags
NGSS.HS-LS1-6
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The diagram shows part of a protein molecule. X What does X represent?
amino acid
fatty acid
glycerol
sugar
Tags
NGSS.HS-LS1-1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Four different foods were tested for their composition. The results are shown in the choices. Which food contains protein but not reducing sugar or starch?
Benedict’s test: blue/iodine test: black/ biuret test: purple
Benedict’s test: blue/iodine test: brown/ biuret test: purple
Benedict’s test: brick red/iodine test: black/ biuret test: blue
Benedict’s test: brick red/iodine test: brown/ biuret test: blue
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the smaller basic units of starch and glycogen molecules?
Starch: amino acid/ Glycogen: fatty acid and glycerol
Starch: amino acid/ Glycogen: simple sugars
Starch: simple sugars/ Glycogen: fatty acid and glycerol
Starch: simple sugars/ Glycogen: simple sugars
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The diagram represents a protein molecule. What do the small circles represent?
amino acids
fatty acids
glycerol
simple sugars
Tags
NGSS.HS-LS1-6
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which row shows the elements and basic units that are used in the construction of large food molecules?
food: fat/ molecules elements:carbon, hydrogen, oxygen, nitrogen/ basic units: glucose
food: fat/ molecules elements:carbon, hydrogen, oxygen, nitrogen/ basic units: glycerol
food: starch/ molecules elements:carbon, hydrogen, oxygen/ basic units: glucose
food: starch/ molecules elements:carbon, hydrogen, oxygen/ basic units: glycerol
Tags
NGSS.HS-LS1-6
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