Biology Advanced higher - part of cell and molec

Question 1 of 22

1

Which is the only amino acid class that is hydrophobic

Select one of the following:

acidic
non-polar
polar
basic

Explanation

Question 2 of 22

1

The reaction that forms when two amino acid monomers are liked together is a hydration reaction

Select one of the following:

True
False

Explanation

Question 3 of 22

1

In which stage of the protein structure does interactions between R-groups of amino acids occur ?

Select one of the following:

primary
secondary
tertiary
quaternary

Explanation

Question 4 of 22

1

Which one is the description for hydrophobic interactions in the protein structure ?

Select one of the following:

Non-polar R groups are mostly arranged to the inside of the protein. The Polar, acidic and basic R groups are mostly arranged on the outside
Very weak attractions between the electron clouds of atoms
The weak negative charge of the oxygen of the C=o is attracted to the weak positive charge on a hydrogen of an OH or NH2 group
The COOH and NH2 groups ionise to become COO- and NH3+. These groups are strongly charged and can attract each other
Covalent bonds form due to reactions between the Sulphur-containing R groups of cysteines

Explanation

Question 5 of 22

1

Choose two purines

Select one or more of the following:

Adenine
cytosine
uracil
guanine
thymine

Explanation

Question 6 of 22

1

The phosphodiester bonds link in the ......

Select one of the following:

3' to 5' direction
5' to 3' direction
2' to 6' direction
6' to 2' direction

Explanation

Question 7 of 22

1

which of the following describes the structure of cytosine

Select one of the following:

A purine base with a single-ring structure
A purine base with a double bond structure
A pyrimidine base with a single-ring structure
A pyrimidine base with a double ring structure

Explanation

Question 8 of 22

1

how many hydrogen bonds link together cytosine and guanine

Select one of the following:

2
4
3
1

Explanation

Question 9 of 22

1

What do you call proteins that are easily removed from membranes in the laboratory using ionic washes

Select one of the following:

lateral
integral
horizontal
peripheral

Explanation

Question 10 of 22

1

Attachment proteins are Proteins which provide cytoskeleton attachment points within the membrane for the structural support of the cell.

Select one of the following:

True
False

Explanation

Question 11 of 22

1

The covalent chemical bonds between nucleotides in DNA are

Select one of the following:

peptide
phosphodiester
glycosidic
hydrogen

Explanation

Question 12 of 22

1

Refer to the picture - which colour shows the phosphate group

Select one of the following:

orange
blue
green
purple

Explanation

Question 13 of 22

1

Why is cholesterol important in the membrane structure ? (could be more than one answer)

Select one or more of the following:

reduced membrane fluidity
allows diffusion across the membrane
used to maintain the structure of the membrane
prevents solidification of the membrane at low temperatures
prevents solidification of the membrane at high temperatures

Explanation

Question 14 of 22

1

What converts inactive trypsinogen in to active trypsin

Select one of the following:

kinase
phosphate
protease
glycogen

Explanation

Question 15 of 22

1

which one is true about a positive modulator (could be more than one answer)

Select one or more of the following:

It is also known as an activator
reduces the affinity of the enzyme
binds to a different allosteric site
increases the formation of all products
also known as an inhibitor
changes the shape of the enzyme

Explanation

Question 16 of 22

1

End product inhibition is when the end product binds to the substrate

Select one of the following:

True
False

Explanation

Question 17 of 22

1

end product inhibition is a form of .....

Select one of the following:

non- competitive inhibitor
the induced fit hypothesis
extracellular signalling
negative feedback
positive modulator

Explanation

Question 18 of 22

1

The actions of protease

Select one of the following:

Hydrolysis of peptide bonds break down proteins
Hydrolysis of phosphodiester bonds to break down nucleic acids
Hydrolysis of the phosphodiester bond in ATP to form ADP and phosphate
Condensation reaction to add to phosphate group to another molecule

Explanation

Question 19 of 22

1

the actions of kinases

Select one of the following:

Hydrolysis of peptide bonds break down proteins
Hydrolysis of phosphodiester bonds to break down nucleic acids
Hydrolysis of the phosphodiester bond in ATP to form ADP and phosphate
Condensation reaction to add to phosphate group to another molecule

Explanation

Question 20 of 22

1

Find the incorrect answer on enzymes

Select one of the following:

they are biological catalysts
lower the activation energy
speeds up the reaction
regulate half of the metabolic reactions in a cell

Explanation

Question 21 of 22

1

competitive inhibitors are non-specific so can be used with a range of enzymes

Select one of the following:

True
False

Explanation

Question 22 of 22

1

which of the following are correct about inhibitors reducing reaction rates

Select one or more of the following:

they can alter enzyme's shapes so it becomes inactive
they can resemble the substrate
they bind to another part of the enzyme

	Created by Katie Bryden almost 9 years ago

part of cell and molecular course

Biology Advanced higher - part of cell and molec

Biology Advanced higher - part of cell and molec

Question 1 of 22

Which is the only amino acid class that is hydrophobic

Select one of the following:

Explanation

Question 2 of 22

The reaction that forms when two amino acid monomers are liked together is a hydration reaction

Select one of the following:

Explanation

Question 3 of 22

In which stage of the protein structure does interactions between R-groups of amino acids occur ?

Select one of the following:

Explanation

Question 4 of 22

Which one is the description for hydrophobic interactions in the protein structure ?

Select one of the following:

Explanation

Question 5 of 22

Choose two purines

Select one or more of the following:

Explanation

Question 6 of 22

The phosphodiester bonds link in the ......

Select one of the following:

Explanation

Question 7 of 22

which of the following describes the structure of cytosine

Select one of the following:

Explanation

Question 8 of 22

how many hydrogen bonds link together cytosine and guanine

Select one of the following:

Explanation

Question 9 of 22

What do you call proteins that are easily removed from membranes in the laboratory using ionic washes

Select one of the following:

Explanation

Question 10 of 22

Attachment proteins are Proteins which provide cytoskeleton attachment points within the membrane for the structural support of the cell.

Select one of the following:

Explanation

Question 11 of 22

The covalent chemical bonds between nucleotides in DNA are

Select one of the following:

Explanation

Question 12 of 22

Refer to the picture - which colour shows the phosphate group

Select one of the following:

Explanation

Question 13 of 22

Why is cholesterol important in the membrane structure ? (could be more than one answer)

Select one or more of the following:

Explanation

Question 14 of 22

What converts inactive trypsinogen in to active trypsin

Select one of the following:

Explanation

Question 15 of 22

which one is true about a positive modulator (could be more than one answer)

Select one or more of the following:

Explanation

Question 16 of 22

End product inhibition is when the end product binds to the substrate

Select one of the following:

Explanation

Question 17 of 22

end product inhibition is a form of .....

Select one of the following:

Explanation

Question 18 of 22

The actions of protease

Select one of the following:

Explanation

Question 19 of 22

the actions of kinases

Select one of the following:

Explanation

Question 20 of 22