Eduqas A-Level Biology Core Concepts overview quiz quiz

Condensation

Hydrolysis reaction

Oxidation reaction

Reduction

Blue to brick-red

Blue to lilac or purple

Orange-brown to blue-black

A white emulsion

Ribosomes for protein synthesis

A cell-surface membrane made of phospholipids

A peptidoglycan (murein) cell wall

A membrane-bound nucleus

50 micrometres

0.5 micrometres

500 micrometres

5 micrometres

Movement of water from higher to lower water potential across a partially permeable membrane

Movement of water from a region of low water potential to one of high water potential using ATP

Movement of dissolved solutes down their concentration gradient through channel proteins

Movement of ions against their concentration gradient using carrier proteins

All of the substrate has been completely used up by the faster reaction at higher temperatures

The enzyme is denatured as bonds break and the active site changes shape

The activation energy of the reaction increases sharply

The enzyme is killed by the heat

It binds directly to the active site and can be overcome by simply adding much more substrate

It raises the maximum rate of the reaction

It binds an allosteric site, changes the active-site shape and lowers the maximum rate

It has no measurable effect on the active site at all

Adenine with guanine, cytosine with thymine

Adenine with cytosine, guanine with thymine

Adenine with uracil, cytosine with guanine

Adenine with thymine, cytosine with guanine

Each new molecule has one original strand and one new strand

Both strands of each new molecule are entirely newly made from free nucleotides

Only one of the two daughter molecules is actually copied

The original DNA is conserved fully without any copying

A new complementary DNA strand

A molecule of mRNA

A polypeptide chain

A tRNA anticodon

Two

Three

Four

Eight

Prophase, the first stage of mitosis

Anaphase of mitotic division

Cytokinesis, when the cell divides

The S phase of interphase