# TSR's Girls vs Boys Biology ChallengeWatch

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#1
Inspired by a thread I saw in the maths section, I thought it'd be a good idea to have a little game up in the biology forum, which can also be good for revision, learning new material or just a little fun!

Rules are quite simple, a user will post a biology question (to make it fair, we'll make the difficulty of the questions at A-level/GCSE level).

The first person to answer correctly will score a point for their gender! If the girls answer a question correctly, the score will decrease by 2 points. If the boys answer the question correctly, the score will increase by 2 points.

For example, we'll start on 50, girls win if the score reaches 0, whilst boys win if the score reaches 100.
Girl: 40
Boy: 42
Girl: 40

If you notice an incorrect answer, then we'll carry on as normal but feel free to quote the person letting them know what the right answer is.

Make sure you write the score in your post so we can keep track of it
If there's a victory eg. the score reaches 0 or 100, quote me so I can update the OP so we can keep score of who's winning and start again at 50.

Boy's 1-0 Girls olliehus with the winner

Anyone can join in! Even if you're not studying biology

I shall start: What are the 4 nucleotide bases in DNA?

50
1
6 years ago
#2

What's a polysaccharides? (lol old A-level stuff. I hope it's not outdated if I did mine in 2006).
1
#3
Polymer of monosaccharides (carbohydrate molecules) joined by glycosidic bonds

How many nucleotides are required to make a codon?

50
0
6 years ago
#4
0
6 years ago
#5
In regard to gaseous exchange in fish, explain what concurrent flow is!

Posted from TSR Mobile
0
#6
(Original post by becdaly)
In regard to gaseous exchange in fish, explain what concurrent flow is!

Posted from TSR Mobile
In fish, the blood flows in the opposite direction to the water, meaning fish are always able to maintain a high concentration gradient. This would not be the case if blood flow was in the same way as water flow. There's a nice explanation with pictures here if anyone's interested.

What's the chemical equation for photosynthesis?

50
1
6 years ago
#7
In fish, the blood flows in the opposite direction to the water, meaning fish are always able to maintain a high concentration gradient. This would not be the case if blood flow was in the same way as water flow. There's a nice explanation with pictures here if anyone's interested.

What's the chemical equation for photosynthesis?

50
6CO2 + 12H2O + Light energy from sun --> C6H12O6 + 6O2 + 6H2O

I hope it's correct :P

What is pyrosis?
{I don't understand the marks scheme, Eloades}
0
#8
(Original post by Dynamo123)
6CO2 + 12H2O + Light energy from sun --> C6H12O6 + 6O2 + 6H2O

I hope it's correct :P

What is pyrosis?
{I don't understand the marks scheme, Eloades}
Looks close enough to me! Pyrosis is chestburn I believe? (There isn't really a mark scheme, so I guess we'll assume every answer people put is correct, I'll update the OP to be a bit more clearer)

What are the 3 main components of a nucleotide?

54
0
6 years ago
#9
Looks close enough to me! Pyrosis is chestburn I believe? (There isn't really a mark scheme, so I guess we'll assume every answer people put is correct, I'll update the OP to be a bit more clearer)

What are the 3 main components of a nucleotide?

54
Isn't it...the base (adenine, etc), sugar and phosphate?

Where does chemiosmosis occur?
2
6 years ago
#10
Yes :P

The three main components of a nucleotide are:
1. Pentose sugar
2. Phosphoric acid
3. Nitrogenous base
0
#11
(Original post by Dynamo123)
Yes :P

The three main components of a nucleotide are:
1. Pentose sugar
2. Phosphoric acid
3. Nitrogenous base
0
6 years ago
#12
InadequateJustice: Across thylakoid membrane in photosynthesis.

What are F1 particles in mitochondria?
0
6 years ago
#13
Decribe how a DNA molecule is replicated.
1
6 years ago
#14
(Original post by plaha123)
Decribe how a DNA molecule is replicated.
I don't want descriptive questions!!! :O (just a little rant. )

DNA is replicated by the semi-conservative method. The DNA helicase unwinds the DNA double strand. The DNA polymerase starts the construction of the leading strand from the site of primer. The lagging strand is synthesized by the DNA polymerase in the form of short Okazaki fragments, which are later sealed by DNA ligase.
0
#15
Ok bit lost on the score, we'll go with 60.

Give the definition of an antibody and an antigen
0
6 years ago
#16
Here we go: :P
Antibodies: They are proteins called immunoglobulins synthesized by the vertebrates in response to antigens that destroy the antigens or immobilize them. They are specific i.e. they cause only the destruction of that antigen which caused their production. They are actually synthesized/manufactured in B Lymphocytes from where they are secreted in blood and lymph.

Antigens: These are more or less proteins called immunogens that stimulate the formation of antibodies.
0
6 years ago
#17
(Original post by Dynamo123)
I don't want descriptive questions!!! :O (just a little rant. )

DNA is replicated by the semi-conservative method. The DNA helicase unwinds the DNA double strand. The DNA polymerase starts the construction of the leading strand from the site of primer. The lagging strand is synthesized by the DNA polymerase in the form of short Okazaki fragments, which are later sealed by DNA ligase.
Correct. But I have no idea what the score is :/
0
#18
(Original post by plaha123)
Correct. But I have no idea what the score is :/
I've got the stuff explained in the OP, just trying to make a biology version of this thread here: http://www.thestudentroom.co.uk/show....php?t=2406274

Don't forget to ask a question once you've answered one, I'll ask the next one for you:

What are the bonds which hold the two strands of DNA together? (score is 62)
0
6 years ago
#19
I've got the stuff explained in the OP, just trying to make a biology version of this thread here: http://www.thestudentroom.co.uk/show....php?t=2406274

Don't forget to ask a question once you've answered one, I'll ask the next one for you:

What are the bonds which hold the two strands of DNA together? (score is 62)
Ah okay I never read the OP :/ cheers.

And I think its hydrogen bonds between the bases
0
#20
(Original post by plaha123)
Ah okay I never read the OP :/ cheers.

And I think its hydrogen bonds between the bases
Correct, question please. Score now 64.
0
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