What does organic mean (in chemistry)?

It contains carbon and hydrogen

It costs more at the grocery store

It is made of many individual parts

Haemoglobin is a quaternary protein because:

It consists of more than one polypeptide chains

It has more than one peptide bonds

Water is polar because...

The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms.

The molecule has two poles, at which the it is colder than other regions of the molecule.

The unequal sharing of electrons gives the water molecule a slight negative charge near its hydrogen atoms and a slight positive charge near its oxygen atom.

Large bodies of water do not quickly fluctuate in temperature. Why?

Water has a high heat capacity.

You body sweats to help prevent you from overheating. How does water regulate temperature?

it absorbs a lot of heat, but only increases a little in temperature

it absorbs a lot of heat, then decreases in temperature

heat is afraid of water and avoids it

Water is polar. What does that mean?

it is a molecule with opposite charges on opposite ends

it is a molecule with no charge

it is a molecule with identical charges on opposite ends

it is a molecule with too many protons

Which of the following is LEAST likely to dissolve in water?

salt made of a positive sodium ion and a negative chloride ion

all of the substances will dissolve easily in water

Which of the following characteristics of water is not a result of hydrogen bonding?

All of the above are a result of hydrogen bonding.

A nucleotide is composed of

A phosphate, sugar and nitrogenous base

A phosphate, Adenine, and nitrogenous base

A protein, Adenine and nitrogenous base

AQA A Level Biological Molecules

Biology

11th Grade

NGSS covered

Used 17+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The monomers of proteins are

nucleotides

amino acids

monosaccharides

fatty acids

Starch, cellulose an glycogen belong to the class of

proteins

lipids

sugars

Polysachharides

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A carbon compound that contains two functional groups: amino and carboxyl

amino acid

enzyme

carbohydrate

nucleic acid

Three fatty acids bonded to glycerol

glycogen

polypeptide

protein

triglyceride

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A large molecule made up of many similar or identical subunits.

lipids

polymer

monomer

monosaccharide

Which of the following tests for starch?

Iodine

Benedicts

Biuret

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following tests for protein?

Iodine

Benedicts

Biuret

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AQA A Level Biological Molecules

The monomers of proteins are

Starch, cellulose an glycogen belong to the class of

A carbon compound that contains two functional groups: amino and carboxyl

Three fatty acids bonded to glycerol

A large molecule made up of many similar or identical subunits.

Which of the following tests for starch?

Which of the following tests for protein?

Which of the following tests for glucose?

Which test requires heat?

What is the colour change if you add Iodine (Brown colour) to the food contains protein?

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