Biology Year 12 Random Retrieval

This quiz contains all the questions in the year 12 biology section. The website will pick 20 questions at random.

1 / 20

A mutation in a population of bed bugs in New York City caused the bedbugs to have a thicker, waxier exoskeleton. Why will the allele for thicker , waxier exoskeleton in bed bugs increase in the population?

The thicker exoskeleton makes it easier to lay eggs. More eggs are laid, so more bed bugs with thicker exoskeleton.

The thicker exoskeleton means that the insecticide used to kill them is no longer effective. The thicker exoskeletal bed bugs are more likely to reproduce and pass on the new allele.

The waxy exoskeleton is waterproof, so they are less likely to drown.

2 / 20

True or false - The Founder Effect is a type of genetic bottle neck?

TRUE

FALSE

3 / 20

Some gene mutations will have no effect at all on the polypeptide, why not?

The genetic code is universal

The genetic code is degenerate

DNA is double stranded

4 / 20

On this diagram, what does B represent?

Sister Chromatids

Homologous Chromosomes

Loci

5 / 20

True or False : The sex chromosomes ( X and Y) are not an homologous pair?

TRUE

FALSE

6 / 20

What is an 'homologous chromosome'?

The same chromosome ( same number e.g. 21) but possibly with different alleles

An identical copy of a chromosome, with identical alleles.

When two alleles are the same, on a pair of chromosomes.

Any two chromosomes.

7 / 20

In the mass flow hypothesis, the water potential is reduced in the phloem near the sources. What will happen to water movement?

Water will move into the source cells via osmosis, from the phloem. Reducing the pressure in the phloem.

The same amount of water will move in as move out as it is now isotonic.

Water will move into the phloem via osmosis, increasing the pressure.

8 / 20

Which number represents a stoma?

7

8

9

9 / 20

If someone's PVR is 1.5dm³ min ^-1, and their tidal volume is 150 cm ³, how many breaths do they take in a minute?

15

10

22

7

10 / 20

What is the correct term for the cells which make up the alveolar wall?

Ciliated Epithelium

Capillary Epithelium

Alveolar Endothelium

Alveolar Epithelium

11 / 20

Other than glucose, which substance can be absorbed from the ileum via co-transport?

Fatty Acids

Amino Acids

Water

12 / 20

In the above experiment, two flasks contained identical masses of animal tissue, identical volume of a solution containing sodium ions, but an inhibitor of ATP production in flask F. Scientists concluded that flask G took up sodium ions by active transport. What is the evidence of this?

a) Uptake in flask G much greater than in flask F , showing use of ATP in flask G

b) Sodium ion concentration in flask G falls to zero, showing uptake against a concentration gradient

a

b

a & b

13 / 20

Which part is hydrophilic?

A

B

I

14 / 20

Which organelle will be found in supernatant C?

Mitochondria

Ribosomes

Nucleus

15 / 20

Which organelle will be found in pellet B?

Mitochondria

Ribosomes

16 / 20

Bacterial cell division creates.

4 identical daughter cells.

4 non-identical daughter cells.

2 identical daughter cells.

17 / 20

What is the best definition of a eukaryotic cell?

Not a prokaryotic cell.

A cell that contains membrane bound organelles.

A plant or animal cell.

18 / 20

What is the next reagent to be added after this initial treatment?

Copper Carbonate

Copper Sulphate

Copper Oxide

19 / 20

What does R stand for on an amino acid?

Reduction Region

Reactionary Region

Variable Region

20 / 20

What substance is added to the sample at the start of a test for lipids?

Ethanol

Water

Glycerol

Your score is

0%

Recent Posts

Categories