Less sensitive to light, one cone joins one neurone, high visual acuity, gives information in colour
2 of 24
How many potassium ions are pumped into the axon by the sodium-potassium pump?
2
3 of 24
What is hyperpolarisation?
When potassium ion channels are slow to close so there is a slight overshoot where too many potassium ions diffuse out of the neurone. The potential difference becomes more negative than the resting potential
4 of 24
What do antagonistic drugs do to synaptic transmission?
They block receptors so they cant be activated by neurotransmitters
5 of 24
Do chemical mediators stimulate local response or widespread response?
Local
6 of 24
How do ectotherms control their body temperature?
Behaviour
7 of 24
Where are Thermoreceptors found?
Skin AND the hypothalamus
8 of 24
What is the Sacrolemma?
the cell membrane of muscle fibre cells
9 of 24
Somatic therapy- does it involve altering the alleles in the muscle cells, body cells or the sex cells
Body cells
10 of 24
Disadvantage of gene therapy?
Allele inserted into a different place in the DNA
11 of 24
A DNA probe can be used to look for clinically inportant genes (mutated genes) ?
True
12 of 24
Can a DNA probe be used to look for a single gene or is it used to look for lots of genes at the same time
Both
13 of 24
Advising patients about the risks of genetic disorder is referred to as what?
Genetic counselling
14 of 24
How is the base sequence of a gene determined?
Restriction mapping and genes sequencing
15 of 24
What's a DNA Primer?
Short piece of DNA
16 of 24
DNA polymerase?
An enzyme that joins DNA nucleotides together
17 of 24
What is electrophoresis?
Separation of DNA fragments to make a genetic fingerprint
18 of 24
An example of stem cells would be
Embryonic cells
19 of 24
The genetic code is NOT what?
Overlapping
20 of 24
First stage of protein synthesis?
Transcription
21 of 24
What is the action of oestrogen?
Stimulates uterus lining to thicken
22 of 24
AlphA cells secrete glucagon into blood and beta cells secrete insulin into blood?
True
23 of 24
When is adrenaline secreted?
When low concentration of glucose in the blood
24 of 24
Other cards in this set
Card 2
Front
Correct description of a Cone cell?
Back
Less sensitive to light, one cone joins one neurone, high visual acuity, gives information in colour
Card 3
Front
How many potassium ions are pumped into the axon by the sodium-potassium pump?
Back
Card 4
Front
What is hyperpolarisation?
Back
Card 5
Front
What do antagonistic drugs do to synaptic transmission?
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