Edexcel A level Biology 2024 Exam
Questions and Answers
Molecular phylogeny - Answer>>It compares the structure of a
particular molecule from different organisms to discover their
degree of evolutionary relation.
Somatic cell - Answer>>A cell in an organism which isn't a
gamete.
DNA - Answer>>Deoxyribose nucleic acid. Carries the genetic
information for cells and some viruses.
mRNA - Answer>>Messenger ribose nucleic acid (single
stranded). The product of transcription.
Speciation - Answer>>The process through which a species is
created
Sympatric - Answer>>Due to reproductive isolation.
Allopatric - Answer>>Due to geographical isolation
Niche - Answer>>The role an an organism in an ecosystem.
Habitat - Answer>>The natural environment in which a species
lives.
Biodiversity - Answer>>The diversity of plant and animal life in a
particular habitat
Ecosystem - Answer>>Organisms and their interactions with
biotic and abiotic factors.
, Carpentered world hypothesis - Answer>>People who live in a
world with many straight lines and right angles tend to interpret
obtuse and acute angles as right angles.
Muller-Lyer Illusion - Answer>>An illusion where a man could
be pointing at two different objects, but depth cues let us know it
is the object in the foreground he is pointing to.
Inhibitory synapse - Answer>>These are synapses that make it
less likely that an action potential will happen in the post synaptic
membrane.
Auxins - Answer>>Plant hormones that stimulate growth by
causing cells to elongate.
Indoleacetic acid (IAA) - Answer>>A specific type of auxin.
Summation - Answer>>When the effect of multiple impulses
adds up.
Spatial summation - Answer>>Summation from many impulses
from different neurons.
Temporal summation - Answer>>Summation from multiple
consecutive impulses from a single neuron.
Excitatory synapse - Answer>>These synapses make the
postsynaptic membranes more permeable to sodium ions.
Synapse - Answer>>Where two neurones meet.
Synaptic cleft - Answer>>The gap in a synapse.
Questions and Answers
Molecular phylogeny - Answer>>It compares the structure of a
particular molecule from different organisms to discover their
degree of evolutionary relation.
Somatic cell - Answer>>A cell in an organism which isn't a
gamete.
DNA - Answer>>Deoxyribose nucleic acid. Carries the genetic
information for cells and some viruses.
mRNA - Answer>>Messenger ribose nucleic acid (single
stranded). The product of transcription.
Speciation - Answer>>The process through which a species is
created
Sympatric - Answer>>Due to reproductive isolation.
Allopatric - Answer>>Due to geographical isolation
Niche - Answer>>The role an an organism in an ecosystem.
Habitat - Answer>>The natural environment in which a species
lives.
Biodiversity - Answer>>The diversity of plant and animal life in a
particular habitat
Ecosystem - Answer>>Organisms and their interactions with
biotic and abiotic factors.
, Carpentered world hypothesis - Answer>>People who live in a
world with many straight lines and right angles tend to interpret
obtuse and acute angles as right angles.
Muller-Lyer Illusion - Answer>>An illusion where a man could
be pointing at two different objects, but depth cues let us know it
is the object in the foreground he is pointing to.
Inhibitory synapse - Answer>>These are synapses that make it
less likely that an action potential will happen in the post synaptic
membrane.
Auxins - Answer>>Plant hormones that stimulate growth by
causing cells to elongate.
Indoleacetic acid (IAA) - Answer>>A specific type of auxin.
Summation - Answer>>When the effect of multiple impulses
adds up.
Spatial summation - Answer>>Summation from many impulses
from different neurons.
Temporal summation - Answer>>Summation from multiple
consecutive impulses from a single neuron.
Excitatory synapse - Answer>>These synapses make the
postsynaptic membranes more permeable to sodium ions.
Synapse - Answer>>Where two neurones meet.
Synaptic cleft - Answer>>The gap in a synapse.
