1

Question 1

What are biological molecules

Answer 1

The molecules that make up living organisms/cells

Question 2

What are the different biological molecules needed by the body

Answer 2

Carbohydrates Vitamins
Fats minerals/inorganic ions
Proteins nucleic acids(dna&rna)
Water ( micro)
(Macro nutrients)

Question 3

Types of nutrition are

Answer 3

Autotrophic
Heterotrophic
Saprotrophic

Question 4

Cells obtain biological molecules from..

Answer 4

Nutrients

Question 5

Name the macro nutrients

Answer 5

Carbohydrates
Fats/lipids
Proteins
Water

Question 6

Name the micro nutrients

Answer 6

Vitamins
Nucleic Acids
Minerals(inorganic ions)

Question 7

What are the elements in carbohydrates

Answer 7

Carbon
Hydrogen
Oxygen

Question 8

Contents of a monosachharide …

Answer 8

Glucose and fructose

Question 9

What is the monomer of carbohydrates

Answer 9

Glucose

Question 10

Contents of dissacharides..

Answer 10

Sucrose and lactose

Question 11

Contents of polysacharrides

Answer 11

Starch,cellulose,chitin,glycogen

Question 12

What does mono mean?

Answer 12

1

Question 13

What does di mean

Answer 13

2

Question 14

What does poly mean

Answer 14

More than 2

Question 15

What is nutrition?

Answer 15

Taking in of materias for energy growth and development

Question 16

Which are the inorganic nutritients

Answer 16

Mineral ions
Water
Vitamins

Question 17

What is autotrophic nutrition?

Answer 17

The type nutrition where organisms naked theor own food eg photosynthesis by plants

Question 18

What is heterotrophic nutrition?

Answer 18

The tyoe of nutrition where organisms depend on plants and animals for food

Question 19

What is saprotrophic nutrition?

Answer 19

The type of nutrition where organisms feed on dead materials and decomposers eg fungus or vulture

Question 20

Which are organic nutrients

Answer 20

Carbohydrates
Fats
Nucleic acids
Proteins

Question 21

What is a polysaccharide

Answer 21

3 or more chains/links of monosachharides

Question 22

Why do organisms needs Carbohydrates

Answer 22

Provide energy

Question 23

What test do you take to detect the presence of carbohydrates(starch)?

Answer 23

Iodine test(with iodine solution)

Question 24

How to you test for monosacchirides(reducing sugars)

Answer 24

Benedict solution

Question 25

What does Benedict solution test for

Answer 25

Glucose

Question 26

What are the monomers of proteins

Answer 26

Amino acids

Question 27

How many types of amino acids are there)

Answer 27

20

Question 28

What are the different types of amino acids

Answer 28

Essential and Non essential

Question 29

What are essential amino acids

Answer 29

The body has to make them

Question 30

What are non essential amino acids

Answer 30

Obtained from different food substances

Question 31

Uses of protein

Answer 31

For building new cells Making enzymes which catalyze chemical reactions Make anti bodies >fight against disease causeing pathogens Hormomes> for coordinating a function

Question 32

What is a polypeptide

Answer 32

3 or more amino acids with 2 peptide bonds

Question 33

What is a dipeptide

Answer 33

2 amino acids with 1 peptide bond

Question 34

What chemical is biuret A

Answer 34

KOH potassium hydroxide

Question 35

What colour will show a positive protein result

Answer 35

Purple

Question 36

What elements are fats made up of

Answer 36

Carbon Hydrogen Oxygen

Question 37

What are the uses of fats

Answer 37

Energy(storage) Layers of fat can act as insulation Synthesizes sex hormones

Question 38

How do you test for fats

Answer 38

Fats are insoluble in h20. Soluble in ethanol. Mix thoroughly. Add drops of water. If cloudy precipitate appears, fats are present

Question 39

What are the elements of protein

Answer 39

Carbon Hydrogen Oxygen Nitrogen And SOME:Phosphorus and sulphur

Question 40

How to test for protein

Answer 40

Add equal volume of biuret reagent to unknown sample. If mixture turns purple- proteins present (Mixture remains blue if absent)

Question 41

What are thr mongers of fats

Answer 41

Fatty acids and glycerol

Question 42

What is between fatty acids and glycerol

Answer 42

A bond

Question 43

What is the pentagon shaped thing in DNA

Answer 43

Deoxyribose

Question 44

The circular shaped thing in dna

Answer 44

Phosphate

Question 45

What is another name for vitamin C

Answer 45

Ascorbic acid

Question 46

How to test for vitamin C

Answer 46

Place equal volume of DCPIP in test tubes. Add different types of fruit juices into the test tube having dcpip drop by drop. Higher vitamin C content fewer drops of dcpip needed

Question 47

What are Nucleic acids

Answer 47

Acids in the nucleus

Question 48

What is the polymer for Nucleic acids

Answer 48

DNA

Question 49

What is DNA

Answer 49

It is the genetic material of a living organism

Question 50

Where is DNA found

Answer 50

In the chromosome

Question 51

What does each chromosome have

Answer 51

A long DNA

Question 52

What does DNA stand for?

Answer 52

Deoxy ribo Nucleic Acid

Question 53

What does RNA stand for?

Answer 53

Ribonucleic acids

Question 54

What is a nucleotide made up of

Answer 54

A phosphate,deoxyribose(a sugar) and a nitrogen base

Question 55

What is a group of nitrogen bases called

Answer 55

Base pair

Question 56

What are the sides of DNA made of

Answer 56

Repeated units of sugar and phosphate

Question 57

What are the rungs(ladder steps) made up of

Answer 57

Nitrogen base

Question 58

Where idms DNA located

Answer 58

Inside the chromosome of the nucleus

Question 59

What is DNA

Answer 59

The genetic material in the nucleus

Question 60

What are the two strands of DNA heod together by?

Answer 60

Bonds that occur between nitrogen bases(HYDROGEN BONDS)

Question 61

What are the full names of ATGC

Answer 61

A- adenine T-thymine G-guanine C-cytosine

Question 62

There are 2 Hydrogen bonds between

Answer 62

A and T

Question 63

There are 3 Hydrogen bonds between

Answer 63

G and C