VCE Biology Question Thread

[Biology24123]

Pretty sure it's D because these are underneath the neck, and are an example of a different characteristic in A. afarensis than in humans.

I said D as well but the answer is C. I'm pretty certain it's wrong

[Sine]

What do we need to know about DNA profiling and DNA sequencing? Do we need to know the whole process?

[Biology24123]

What do we need to know about DNA profiling and DNA sequencing? Do we need to know the whole process?

Don't need to know the process, just the general concept

[Elizawei]

Pretty sure it's D because these are underneath the neck, and are an example of a different characteristic in A. afarensis than in humans.

Is that the CSE 2014 test? It's dodgy as.... quite a lot of mistakes in their multiple choice section...

[Biology24123]

Is that the CSE 2014 test? It's dodgy as.... quite a lot of mistakes in their multiple choice section...

Yeah loads of dodgy questions

[Elizawei]

Are electron carriers like NADP and FADH cofactors or coenzymes? 

[cosine]

Are electron carriers like NADP and FADH cofactors or coenzymes? 

Cofactors are the non-protein part of the enzyme that is not organic; coenzymes are the non-protein component that are organic. So in the case of the NADP+ and FAD+, these are cofactors.

Also, don't just say NADP or FAD, make sure you include the + because it indicates that they are in the state with one (or two in the state of FAD) less electrons, and when they carry the hydrogen ions, they also carry an electron with it.

[Biology24123]

Cofactors are the non-protein part of the enzyme that is not organic; coenzymes are the non-protein component that are organic. So in the case of the NADP+ and FAD+, these are cofactors.

Also, don't just say NADP or FAD, make sure you include the + because it indicates that they are in the state with one (or two in the state of FAD) less electrons, and when they carry the hydrogen ions, they also carry an electron with it.

True, it's better to put the + but doesn't really matter for VCE biol

[wobblywobbly]

I said D as well but the answer is C. I'm pretty certain it's wrong

No. It is C. You need to read these kinds of questions very carefully:

"fewer characteristics of modern humans above the neck than below". Which does NOT support the statement.

A and B are ruled out as they are different to humans above the neck, supporting the statement. We'll skip C.

D is a feature that is similar to humans, but the statement is asking for the same/similar characteristics below the neck, and different characteristics above the neck.

Once you see that's what they were asking for, D supports the statement, leaving C the odd one out. C describes a characteristic that is different below the neck, but we're looking for ones above the neck. Hope that made sense.

[cosine]

Few questions about hominin evolution:

1. I understand the two theories now, thankfully... But for the Out-of-Africa theory, it says that modern humans evolved INSIDE Africa, and then dispersed around the world in waves. So, that means that transitional fossils of modern humans must ONLY be found inside africa, right?

But a statement in my book said that Homo erectus migrated from Africa into Europe.. Does this mean that Homo erectus is not an ancestor of modern humans?

When it says transitional fossils, it means that the direct ancestors of humans, right? Like the very hominin species that modern humans evolved from were only in Africa?

enlighten me, please.

[Biology24123]

No. It is C. You need to read these kinds of questions very carefully:

"fewer characteristics of modern humans above the neck than below". Which does NOT support the statement.

A and B are ruled out as they are different to humans above the neck, supporting the statement. We'll skip C.

D is a feature that is similar to humans, but the statement is asking for the same/similar characteristics below the neck, and different characteristics above the neck.

Once you see that's what they were asking for, D supports the statement, leaving C the odd one out. C describes a characteristic that is different below the neck, but we're looking for ones above the neck. Hope that made sense.

So C isn't a characteristic of humans but D is?

[vox nihili]

Don't need to know the process, just the general concept

Which is such a shame because sequencing is really interesting! It's a really nifty technique

[wobblywobbly]

So C isn't a characteristic of humans but D is?

Actually... now that I think about it some more: Early hominins had larger arms, but the wording for the toes seems a bit iffy to me at least

[Biology24123]

Actually... now that I think about it some more: Early hominins had larger arms, but the wording for the toes seems a bit iffy to me at least

Haha, maybe you should read it more carefully. True, I was unsure about the elongated feet

[wobblywobbly]

Haha, maybe you should read it more carefully. True, I was unsure about the elongated feet

Should definitely take my advice more often !