Biology Predictions/Thoughts (3 Viewers)

[lily5885]

can someone give me a brief summary of kidneys in mod 8 lol

 

[lily5885]

GOOD LUCK GUYS WE CAN DO THIS, if in doubt just write like random keywords and fluff bc chances are u will get at least 1 mark

true true whatever my brain can think of honestly

 

[okayokay123]

Guys, for temperature negative feedback loops, is the receptor for the stimulus thermoreceptor nerves or the hypothalamus???

 

[Leadmen4y]

Guys, for temperature negative feedback loops, is the receptor for the stimulus thermoreceptor nerves or the hypothalamus???

thermoreceptor nerves

 

[okayokay123]

Thats what I was thinking, but I've seen some textbooks say hypothalamus, and the question in the 2019 paper on negative feedback loops also implies its the hypothalamus

 

[okayokay123]

Also for this one the answer is A, but can't C also be an advantage as mating rituals allow an organism to be more selective of mates and choose a partner with desiable qualities?

 

[mikrokosmos]

View attachment 34074
Also for this one the answer is A, but can't C also be an advantage as mating rituals allow an organism to be more selective of mates and choose a partner with desiable qualities?

yes BUT the bigger point made in C is mating rituals, these r very time consuming.

 

[mikrokosmos]

do yall know lots about the anatomy of the male and female reprod organs? i know more ab female bc of pregnancy stuff

 

[lily5885]

Guys, for temperature negative feedback loops, is the receptor for the stimulus thermoreceptor nerves or the hypothalamus???

the receptors are thermoreceptors however the hypothalamus is part of the brain which also has receptors that receives nerve impulses from structures in the skin called thermoreceptors , which give information about the surface temperature of the body. The hypothalamus also contains its own thermoreceptors, which are sensitive to the temperature of the blood.

 

[nini.nico]

View attachment 34074
Also for this one the answer is A, but can't C also be an advantage as mating rituals allow an organism to be more selective of mates and choose a partner with desiable qualities?

to me c seems more like a disadvantage
reason being mating rituals takes a long time, like organisms would have to form a relationship etc in order to have offspring
a would be the most correct because it ensures survival for the embryo and makes sure it doesn't die due to bad environment

 

[lily5885]

View attachment 34074
Also for this one the answer is A, but can't C also be an advantage as mating rituals allow an organism to be more selective of mates and choose a partner with desiable qualities?

yes but you have to chooose the best answer and the best answer is A because this increases fertilisation rates and continuation of species whilst mating is also advantage but its not the most suitable for creating lots of offspring

 

[lily5885]

C is a disadvantage that involves excess energy. A is the best option

but mating doesnt involve excess energy does it? i thought external reproduction requires more energy because species must produce a large amount of gametes?

 

[mikrokosmos]

but mating doesnt involve excess energy does it? i thought external reproduction requires more energy because species must produce a large amount of gametes?

a lot of animals have like dances etc for mating so thats more energy

 

[stressedadfff]

guys do we need to know action potentials?? and like depolarisation and stuff?

 

[stressedadfff]

guys do we need to know action potentials?? and like depolarisation and stuff?

orrrrr

 

[lily5885]

orrrrr

briefly but not rlly, this used to be more heavily assessed in the old syllabus, not now. But id just get a basic understanding

 

[theoneandonlyshrek]

Thanks for clearing that up guys. One more thing, in the dot point that talks about the effect of mutation, gene flow, genetic drift on the gene pool - is gene flow the change in the frequency of alleles due to movement of populations, emmigration etc, while genetic drift is a random event that causes changes to the gene pool such as a natural disaster that is selective against a specific part of the gene pool, leading to bottleneck (only a small portion survive, making much smaller gene pool) and founders effect (sample moves to new area, not fully representing allele frequency in the original population?

yes ur absolutely correct, our teacher taught it to us like people living on an island and all that could happen to them (they could flow and mate with other populations, drift like if their island broke in half) idk makes sense in my head

 

[cloud_berry]

i vaguely know mod 6 and 7 and i think i’m mostly good for mod 5 but i still don’t know wtf is going on in mod 8, tempted to leave things up to fate now

 

[sprngregon]

How are you all prepping for the big Covid 8 marker? I think I’m gonna watch some videos tonight just to know how mRNA vaccines work and get some Covid case studies

 

[stressedadfff]

How are you all prepping for the big Covid 8 marker? I think I’m gonna watch some videos tonight just to know how mRNA vaccines work and get some Covid case studies

what could it ask though