York U anatomy and Phys I

[Curi0user]

 

 

I just studied from the lectures... didn't even buy the textbook.

 

She specifically told us she'll take questions from the textbook

But when did you take the class?

[aaronjw]

I'm organizing a phys study group for some time next week and will also try to do one for the saturday before the exam as a review slamdunk session.

 

Anyone interestec, send me your email by PM and i'll be in touch.

[medhopeful64]

She specifically told us she'll take questions from the textbook

But when did you take the class?

 

yah I'm wondering this too...I forced myself to read the appendices/chap 1 because she said she'd test from textbook too...but its sooo basic.

 

Oh, and thanks Aaron for uploading so many lectures!

[bored]

can anyone comment on the type of questions given for human phys 1? are they tricky? or simple basic stuff?

 

seems kinda cutting it really close .. 50 minutes and 47 Questions!

[aaronjw]

can anyone comment on the type of questions given for human phys 1? are they tricky? or simple basic stuff?

 

seems kinda cutting it really close .. 50 minutes and 47 Questions!

 

That should tell you the nature of the questions. Little time to think through a a question seems to suggest to me not *overly* complicated question sets.

[Curi0user]

can anyone comment on the type of questions given for human phys 1? are they tricky? or simple basic stuff?

 

seems kinda cutting it really close .. 50 minutes and 47 Questions!

 

I hear they are not easy. Not "difficult", but not easy.

[charmer08]

can anyone comment on the type of questions given for human phys 1? are they tricky? or simple basic stuff?

 

seems kinda cutting it really close .. 50 minutes and 47 Questions!

 

they are straightforward

 

for example: A covalent bond is likely to be polar if:

a. the two atoms sharing electrons are equally electronegative

b. one of the atoms sharing electrons is much more electronegative

c. it is between two atoms that are both very strong electron acceptors

d. the two atoms sharing electrons are of the same element

e. it is between two atoms that are both very strong electron donors

[Curi0user]

they are straightforward

 

for example: A covalent bond is likely to be polar if:

a. the two atoms sharing electrons are equally electronegative

b. one of the atoms sharing electrons is much more electronegative

c. it is between two atoms that are both very strong electron acceptors

d. the two atoms sharing electrons are of the same element

e. it is between two atoms that are both very strong electron donors

 

Lol in that case, nice.

[aaronjw]

they are straightforward

 

for example: A covalent bond is likely to be polar if:

a. the two atoms sharing electrons are equally electronegative

b. one of the atoms sharing electrons is much more electronegative

c. it is between two atoms that are both very strong electron acceptors

d. the two atoms sharing electrons are of the same element

e. it is between two atoms that are both very strong electron donors

 

I think the answer is b?

 

*prays*

[Curi0user]

I think the answer is b?

 

*prays*

 

Yeppeeeeers

[aaronjw]

Yeppeeeeers

 

Team america, fuk ya!

 

Lol

[charmer08]

Haha kk how about this one (its not from the phys):

 

For a protein to be exported from the lumen of the ER to the outside of the cell, how many membranes must it cross before it finally leaves the cell?

a. 0 b. 1 c. 2 d. 3 e. 4

[PhoenixFlare500]

I'm gonna go with 0.

[aaronjw]

Haha kk how about this one (its not from the phys):

 

For a protein to be exported from the lumen of the ER to the outside of the cell, how many membranes must it cross before it finally leaves the cell?

a. 0 b. 1 c. 2 d. 3 e. 4

 

I think 0

 

Ane the reason i think that is there are no lumen's connecting the ER to the outside. Am i right?

 

10char

[charmer08]

haha you guys are right... its 0 because its transported through vesicles... it never crosses any membranes

 

ok heres another one for practice (this ones not from phys either):

 

When a poison such as cyanide blocks the ETC, glycolysis and TCA soon grind to a halt as well. Which of the following is the best explanation for this?

a. A high level of NADH is present in the cell

b. The uptake of oxygen stops because the ETC was inhibited

c. NAD+ and FAD are not available for glycolysis and TCA to continue

d. Electrons are no longer available for the ETC to power glycolysis and TCA

e. They run out of ADP

[aaronjw]

Not a remote clue as i have no knowledge of how cyanide acts in the body.

[charmer08]

Not a remote clue as i have no knowledge of how cyanide acts in the body.

 

you should be able to answer the question because of your knowledge of cellular respiration... I am telling you that it acts by blocking the ETC..

 

but no worries... this question is a bit difficult that the kinda questions we had on our phys test

[Curi0user]

haha you guys are right... its 0 because its transported through vesicles... it never crosses any membranes

 

ok heres another one for practice (this ones not from phys either):

 

When a poison such as cyanide blocks the ETC, glycolysis and TCA soon grind to a halt as well. Which of the following is the best explanation for this?

a. A high level of NADH is present in the cell

b. The uptake of oxygen stops because the ETC was inhibited

c. NAD+ and FAD are not available for glycolysis and TCA to continue

d. Electrons are no longer available for the ETC to power glycolysis and TCA

e. They run out of ADP

 

C?

I myself have no idea I just dont think its B because glycolysis would run wihtout oxygen regardless.. and I dunno I also see how it can be D?

Ahhhh need to re-memorize all these redox reactions cos I completely forrgettt

[aaronjw]

C?

I myself have no idea I just dont think its B because glycolysis would run wihtout oxygen regardless.. and I dunno I also see how it can be D?

Ahhhh need to re-memorize all these redox reactions cos I completely forrgettt

 

You are right. Good job!!

[Curi0user]

You are right. Good job!!

 

Doesnt feel like a good job, i completely guessed. Ohhh boyy...

[aaronjw]

Doesnt feel like a good job, i completely guessed. Ohhh boyy...

 

Im starting to think D now as well simply because if ETC stops then you cant get back to glycolysis to restart the process since that is where the *stop* is?

[charmer08]

C?

I myself have no idea I just dont think its B because glycolysis would run wihtout oxygen regardless.. and I dunno I also see how it can be D?

Ahhhh need to re-memorize all these redox reactions cos I completely forrgettt

 

yeah you're right... its C because glycolysis requires NAD+ and ATP to form NADH and more ATP and one way to get that NAD+ is ETC... NADH goes to ETC and gives away its Hydrogen and becomes NAD+ which can go back and drive glycolysis! D is wrong cuz electrons are still available... nothing has happened to their supply... its just that the ETC is blocked so there is a traffic jam of electrons in the ETC.

[Curi0user]

You are right. Good job!!

 

Im starting to think D now as well simply because if ETC stops then you cant get back to glycolysis to restart the process since that is where the *stop* is?

 

Yep dont understand that one. There is a reduction in glycolysis, therefore it needs an electron?

AAAH!

[Curi0user]

yeah you're right... its C because glycolysis requires NAD+ and ATP to form NADH and more ATP and one way to get that NAD+ is ETC... NADH goes to ETC and gives away its Hydrogen and becomes NAD+ which can go back and drive glycolysis! D is wrong cuz electrons are still available... nothing has happened to their supply... its just that the ETC is blocked so there is a traffic jam of electrons in the ETC.

 

But ETC creates electrons when it splits water, so I figured thatd be a problem if theres no ETC.. lol

[medhopeful64]

that membrane question got me...guess I shouldn't be getting too comfy here! :S