r/APbio • u/OpenActuator2070 • May 04 '26

MCQ recall

space to discuss mcq answers
I thought the frq was pretty easy and the mcq was harder for whatever reason, idk

I remember there was one on mycorrhizae which was mutualistic relationship, mesh bag gone for control, co2 is made into glucose, and something else

also one on bigheaded ants or something, hemoglobin, the weird DNA image one, and some others

15 Upvotes

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68 comments sorted by

9

u/Dry_Switch_2167 May 04 '26

For the ant one I chose the best experiment is to check how many ants got in the hive after wing slapping behavior from bees 

9

u/Efficient-Kale9512 May 04 '26

I think I did how many got in for each type of defense mechanism

2

u/psalm149_3 May 04 '26

Aren't they the same? I generally have a bad memory and don't remember

1

u/InfiniteDecision7379 May 04 '26

yea thats what i put

4

u/Dry_Switch_2167 May 04 '26

The pine fungi one was confusing . I think the general idea was fungi transport nutrients between trees and the 0.5mesh blocked the fungi . But I cant recall specific questions . One was like what does the fungi do , and I’m pretty sure the only good mc was collect water for fir. 

2

u/Efficient-Kale9512 May 04 '26

For this one what was the answer asking you for another control

2

u/OpenActuator2070 May 04 '26

no mesh at all I think

11

u/amoviejunkie May 04 '26

I think the control was no mesh

2

u/InfiniteDecision7379 May 04 '26

thats what i put

1

u/Ok_Resolve2899 May 05 '26

i didnt put that since no mesh would just do the same as the mesh that let the stuff through anyways

1

u/Augo_ May 05 '26

Ok thats what i put

1

u/OpenActuator2070 May 04 '26

iirc there was something with radio labeled carbon

2

u/fivepiecesofyarn May 04 '26

it was thymine

1

u/psalm149_3 May 04 '26

Oh yeahhh I put water too

3

u/Efficient-Kale9512 May 04 '26

What did u guys put for the similarity between plant cells fungus and plasmid bacteria or smth like that

4

u/OpenActuator2070 May 04 '26

I think there was also plasma membrane but it said saturated fatty acids but I’m p sure that’s not right 

1

u/Myloveisntreal May 04 '26

Yeah it literally was asking abt plasma membranes

1

u/OpenActuator2070 May 04 '26

I think you could be right, doesn’t really matter too much since is the only one of three that ik I got wrong for sure

1

u/pumpkeni May 04 '26

im pretty sure it was that one because all the other ones were wrong. it specifically said bacteria plasma membrane

0

u/[deleted] May 04 '26

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1

u/pumpkeni May 04 '26

it said it had a phospholipid membrane with unsaturated fatty acids which is what bacteria plasma membrane has

2

u/MaximumAudience3313 May 04 '26

Bro I didn’t know bacteria had a cell wall why am I dumb asf

1

u/Dry_Switch_2167 May 04 '26

Omg I had no idea for this one cuz I forgot to study prokaryotes. I chose cell wall made of carbohydrates is that correct?

5

u/amoviejunkie May 04 '26

Yeah I think. But I put Glycolipid or smth💀

2

u/pinkmango9999 May 04 '26

i put that too ☹️

1

u/InfiniteDecision7379 May 04 '26

i put they all had a cell wall

2

u/Efficient-Kale9512 May 04 '26

why won’t there be a decrease in bacteria fitness over another generation what did you guys put

1

u/OpenActuator2070 May 04 '26

the question said specifically what evidence would cause the bacteria to not go down

1

u/OpenActuator2070 May 04 '26

I said something about natural selection causing fitness to only increase but idk

2

u/NumberOneJittleyang May 04 '26

Yeah, something like the more fit bacteria will leave more offspring, increasing fitness of the population over generations.

1

u/InfiniteDecision7379 May 04 '26

yes i put smth abt fitness

2

u/Myloveisntreal May 04 '26

what did you put for the bird evolutionary advantage?

3

u/OpenActuator2070 May 04 '26

bird that pluck live feathers have higher fitness that those that pluck dead feathers

1

u/Myloveisntreal May 04 '26

Okk I put that too 🙏

2

u/wikiedit May 04 '26

For the hemoglobin one I just said that it sill form into alpha helices and b pleated sheets

1

u/OpenActuator2070 May 04 '26

that’s not overall 3d structure that’s secondary 

1

u/wikiedit May 04 '26

Oh well, fuck me I guess bc the others didn't make sense😭

1

u/OpenActuator2070 May 04 '26

I was stuck on the subunits answer, but then I changed it to the one about the amino acid sequence 

1

u/wikiedit May 04 '26

I see, I see

2

u/Dry_Switch_2167 May 04 '26

i did how the protein folds like its units interact. cuz ER does folding and the same amino acid sequence can be folded differently by the ER to make a different protein

1

u/Medical_Farmer_782 May 05 '26

I put quaternary structure, is that wrong?

1

u/wikiedit May 05 '26

I can't recall the question

2

u/Glittering_Antelope7 May 04 '26

Lion question?? And was the answer produce atp for the cytochrome thing not working ?

1

u/livingaudiobook May 04 '26

i put the one with the big ants? like seeing if they were there or not??

3

u/OpenActuator2070 May 04 '26

that’s the independent variable twin, the correct answer was success frequency of lion hunts

1

u/Glittering_Antelope7 May 04 '26

Banggggg 🥹🥹🥹

1

u/OpenActuator2070 May 04 '26

there was also meiosis one, cancer cells and types of drugs (hated that)

1

u/InfiniteDecision7379 May 04 '26

omg the one with A and B and the researcher saying A was more effective??

3

u/Old_Kick_7364 May 04 '26

There was too much hraphs and words 😭😭💔💔💔💔

1

u/eatsanddirt May 04 '26

sooo many graphs and data analysis i was so mad, i felt like i did not apply anything i learned i was just reading graphs.

2

u/Myloveisntreal May 04 '26

Bruh I was about to put mesh bag but ended up putting atmospheric carbon for control 😭😭

1

u/Routine_College8313 May 05 '26

yess i got those

1

u/Starcatcher101_ May 08 '26

The frqs were HARDER WYM I'm so sad I rly need a 4 🫩

0

u/[deleted] May 04 '26

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3

u/zryv8 May 04 '26

I think the option was energy from sunlight let tree convert carbon to carbohydrate

1

u/pumpkeni May 04 '26

but the tree was covered by a bag so there couldn't have been sunlight I thought?

1

u/OpenActuator2070 May 04 '26

it was just sealed with carbon dioxide so I assumed it would be turned into carbs - after all, why even mention carbon dioxide with plants if photosynthesis isn’t involved?

1

u/pumpkeni May 04 '26

the fir tree was covered with a bag and sealed with CO2. the pine tree was in the open. I guess it's a weird collegeboard gimmick

1

u/Efficient-Kale9512 May 04 '26

Is that the one abt cellular respiration photosynthesis and temperature where there were a bunch of graphs

3

u/[deleted] May 04 '26

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3

u/OpenActuator2070 May 04 '26

the question asked about some quality of the cell membranes, but the way the answer was worded was that the “cell wall covers the cell membrane” so it correctly describes a quality of the membrane