2020 Biology Exam

[failingenglish]

Anyone got a suggested answers for the multi choice? or whole exam would be even better.

YES PLSSSSS

[nirgun.kaur]

what did you guys put for the question after the explanation of mRNA and tRNA - something about 2 important things in RNA processing....

[Jinju-san]

what did you guys put for the question after the explanation of mRNA and tRNA - something about 2 important things in RNA processing....

I talked about alternative splicing, which removes introns (non-coding sequences) and joins exons together and enables an energy efficient process of gene expression in a cell. I also discussed how exon shuffling/juggling is used to rearrange exons (coding-sequences) and increase the functional diversity of proteins that can be produced from only one gene. I am not entirely sure how valid these two points are though.

[failingenglish]

what did you guys put for the question after the explanation of mRNA and tRNA - something about 2 important things in RNA processing....

I talked about exons being spliced out as well as the addition of a chemical cap and a poly A tail.

[THO0088]

Anyone got a suggested answers for the multi choice? or whole exam would be even better.

This would be amazing please!!!

[bamboozled]

Anyone know the answer for the cellular respiration multiple choice question? It was a diagram where I believe pathway 1 was anaerobic and pathway 2 was Krebs Cycle. One of the answers was ‘pathway 1 produces ATP’ and the other was ‘pathway 2 produces NADH to carry electrons for use in the electron transport chain’ - what did ya’ll put? Aren't these both true or am I stupid?

[failingenglish]

Anyone know the answer for the cellular respiration multiple choice question? It was a diagram where I believe pathway 1 was anaerobic and pathway 2 was Krebs Cycle. One of the answers was ‘pathway 1 produces ATP’ and the other was ‘pathway 2 produces NADH to carry electrons for use in the electron transport chain’ - what did ya’ll put? Aren't these both true or am I stupid?

GIRL i was so confused but i put the ATP one? idk doe it was a phat guess </3

[jonah ivelja]

pathway 1 was the link reaction to convert pyruvate into lactic acid and convert NADH back into NAD+. therefore ATP wasn't produced as glycolysis had already occured. I think

[bamboozled]

pathway 1 was the link reaction to convert pyruvate into lactic acid and convert NADH back into NAD+. therefore ATP wasn't produced as glycolysis had already occured. I think

Isn’t the conversion of pyruvate into lactic acid anaerobic respiration though?? And I’m 99 precent sure ATP is produced in anaerobic respiration ?

GIRL i was so confused but i put the ATP one? idk doe it was a phat guess </3

Literally same, I said eenie meenie miney moe and guessed - the multiple choice was so hard ;(( Imma just sit and pray that my bullshitting skills payed off in part B ;(

[valjaybj]

what did you guys write for that question related to the measles article, i think it was 'out of the children aged 5 and under, who is the least likely to die, explain why' or something like that?

[ActivationEnergy]

what did you guys write for that question related to the measles article, i think it was 'out of the children aged 5 and under, who is the least likely to die, explain why' or something like that?

I think you had to refer to the article and it said like 6-month-old babies had a greater survival rate and the explanation is due to natural passive immunity given from the mother via breastfeeding or travel of antibodies through the placenta before birth. That is what I wrote anyways, not 100% certain if that is correct.

[valjaybj]

I think you had to refer to the article and it said like 6-month-old babies had a greater survival rate and the explanation is due to natural passive immunity given from the mother via breastfeeding or travel of antibodies through the placenta before birth. That is what I wrote anyways, not 100% certain if that is correct.

okay yeah that's what I wrote too but I wasn't sure if that was correct, thanks!

[WhatisaMeMe]

hey guys was there a question where you had to label the rna or dna or something like that?

[ActivationEnergy]

hey guys was there a question where you had to label the rna or dna or something like that?

There was a question asking to label a RNA nucleotide.

[WhatisaMeMe]

There was a question asking to label a RNA nucleotide.

was that on the page where you had to fill a table?