3.1.2.1 Introduction to Biological Molecules Flashcards Preview

SHHS - Science - NEW AQA A-Level Biology (Year 1) > 3.1.2.1 Introduction to Biological Molecules > Flashcards

Flashcards in 3.1.2.1 Introduction to Biological Molecules Deck (39):
1

What are the units of the mole?

mol

2

what is a solvent?

The liquid that a solute is dissolved into to make a solution

2

Individual biological molecules that can be linked to form chains are called...

monomers

3

Which type of reaction take place every time a monomer undergoes polymerisation?

a condensation reaction

4

How many atoms of carbon-12 are found in 1 mole of carbon-12?

6.022 x 1023

4

Which polymer do many mononucleotides form?

Polynucleotides

5

Define a 'molar solution' (1 M)

A molar solution (1 M) is a solution that contains 1 mole of solute in every litre (dm3) of solution.

5

How else can 1 mol dm-3 be written?

1 mole per litre

1 Molar

1 M

5

Name the common biological monomers

mononucleotides (or just nucleotides)

monosaccharides

amino acids

6

Describe a hydrogen bond

When the positive charge of one polar molecule is attracted to the negative charge of another polar molecule.

8

How can we find the mass of 1 mole of a more complex molecule?

Look up the atomic masses of each element that make up the molecule and add them together.

9

The process of polymer formation from monomers is called...

polymerisation

9

a hydrolysis reaction requires...

the addition of water to separate a polymer into its monomers.

10

What is meant by metabolism?

All of the chemical reactions that are taking place in the human body

12

What is a solute?

The solid that is dissolved to make a solution

13

Name 3 common biological polymers

Polynucleotides

Polysaccharides

Polypeptides (proteins)

16

What is 6.022 x 1023 referred to as?

Avagadros Number

Avagadros Constant

The number of something in 1 mole

17

Describe a covalent bond

When atoms share a pair of electrons in their outer shell.

18

Which polymer do many monosaccharides form?

Polysaccharides

19

a condensation reaction releases...

a water molecule when monomers join

20

How else can 1 mole per litre be written?

1 mole dm-3

1 Molar

1 M

20

1 litre = _____ dm3

1 litre = 1 dm3

21

How many of something are there in 1 mole?

6.022 × 1023

22

Name the 3 types of bond that join biological molecules together

Covalent bonds

Ionic bonds

Hydrogen bonds

23

Long chains of monomer sub units are called...

polymers

25

Moles are used when talking about large numbers of substances such as...

Atoms

Molecules

26

What is a molecule?

When two or more atoms are chemically bonded together.

27

What is the mass of 1 mole of carbon?

12 g

27

Describe an ionic bond

When oppositely charge ions are attracted to one another e.g. Na+ and Cl-

29

What is an atom?

The smallest particle of a chemical element that can exist

30

How can we easily find the mass of 1 mole of an element?

Look up the atomic mass of the element on a periodic table.

32

Which polymer do many amino acids form?

Polypeptides (proteins)

33

Which type of reaction take place every time a polymer is broken down into monomers?

hydrolysis

34

name the molecule

Q image thumb

unsaturated fatty acid

35

Name a biological molecule that contains nitrogen

protein/amino acids

DNA

RNA

ATP/ADP

NAD/NADP

nucleotide

 

36

define a monomer

smaller/repeating unit/molecule from which a larger molecule is made (polymer)

37

What monomers make up lactose?

galactose and glucose

38

name the bond between 2 monosaccarides

glycosidic

39

name the bond between fatty acids and glycerol

ester