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Chemistry
The functional group -COOH is used for ______?
A
Carboxylic acids
B
Phenols
C
Alcohols
D
None of these
Correct Answer
A
Chemistry
Lactose is ______?
A
Grape sugar
B
Milk sugar
C
Hony sugar
D
None of these
Correct Answer
B
Chemistry
Glucose is ______?
A
Vitamin
B
Protein
C
Carbohydrate
D
Lipid
Correct Answer
C
Chemistry
The general formula for alkanes is _____?
A
CnH2n
B
CnH2n+1
C
CnH2n+2
D
None of these
Correct Answer
C
Chemistry
Substances that react with both acids and bases are called?
A
Conjugate acids
B
Conjugate bases
C
Amphoteric substances
D
Buffers
Correct Answer
C
Chemistry
Ozone layer is part of ______?
A
Mesosphere
B
Stratosphere
C
Thermosphere
D
Troposphere
Correct Answer
B
Chemistry
How much percentage (%) of the Earth's Surface is covered with water?
A
70% (71%)
B
60
C
50
D
40
Correct Answer
A
Chemistry
Amino acids are building blocks of ______?
A
Nucleic acids
B
Protein
C
Vitamins
D
Lipid
Correct Answer
B
Biology
Which condition results from an extra copy of chromosome 21?
A
Turner syndrome
B
Klinefelter syndrome
C
Down syndrome
D
Edwards syndrome
Correct Answer
C
Biology
Nondisjunction during meiosis can result in:
A
Polyploidy only
B
Aneuploidy
C
Identical twins
D
DNA replication
Correct Answer
B