Biology Errors

FSH

stimulates oestrogen release, peaks after menstruation and at ovulation

LH

stimulates progesterone release, peaks at ovulation

Oestrogen

inhibits FSH release, high before ovulation, peaks at ovulation

Progesterone

inhibits LH release, peaks after ovulation

Sensory Neuron

Cell body at Side

Relay Neuron

Really short

Motor Neuron

Massive cell body

Order of Neurones in Reflex Arc

Shri Rama

Ciliary Muscles and Suspensory Ligaments

they are RINGS!!!!! just remember that much

Phloem

amino acids and sucrose because pH, they are living cells forming a tube with holes, translocation occurs here.

Xylem

water and mineral salts, lignin walls and dead cells

translocation

occurs in the phloem to transport sucrose and amino acids, bidirectional

transpiration

occurs in xylem

advantages of pesticides

cheap and accessible,

have an immediate effect

kill every single pest

disadvantages of pesticides

resistance development,

can kill other organisms eg pollinators,

bioaccumulation (large concentration at top of food chain because they don’t break down),

need for constant reapplication

advantages of biological control

natural, no pollution

no resistance

specific targeting

long lasting/doesn’t need to be reapplied

disadvantages of biological control

cannot eliminate pest

may become pest itself

may consume other organisms

take longer to be effective

how to max discuss conclusion

ALWAYS LOOK FOR:

repeated or not? reliability

sample size? accuracy

CVs?

variation 4 marker

mutation causes variation

variation increases survivability

survival = reproduce and pass on allele

amount of organisms with allele increases

eventually whole species has allele

protein synthesis

transcription

mRNA leaves nucleus and enters cytoplasm

ribosomes

tRNA brings attached amino acids

with complementary bases

translates amino acids into polypeptide chain