Biology Paper 1

[danial 234]

Okay so excretion of carbon dioxide was diffusion and muscular contraction only na? Insulin in the blood remains constant and its secretion varies. What else was there?

first ans is correct. and the second ans is wrong.

 

[Snowysangel]

first ans is correct. and the second ans is wrong.

No it's correct too. I wasn't conforming the ans..I know it's right:/ It's secretion depends on the amount of glucose in the blood, and when it's not needed anymore, it's broken down by the liver hence it's concentration remains constant

 

[Snowysangel]

Cuticle is the no cellular layer that prevents water loss...what other questions were thee

 

[tayyabaaijaz]

tell the answers:
1. cuticle- a transparent layer that allows light to enter?
2. Insulin- both constant?
3. excretion of carbon dioxide?
4. hormone missing?
5. in the block diagram ttpe in which we had to identify producers?
6. a new organism is discovered. what is could be and what it could not be?

 

[Snowysangel]

tell the answers:
1. cuticle- a transparent layer that allows light to enter?
2. Insulin- both constant?
3. excretion of carbon dioxide?
4. hormone missing?
5. in the block diagram ttpe in which we had to identify producers?
6. a new organism is discovered. what is could be and what it could not be?

Cuticle: impervious non cellular layer that prevents water loss. Insulin: secretion varies, amount in blood constant. Excretionco2: only muscles and diffusion. Hormone: oestrogen. 5: B. 6: can be bacteria, can't be virus

 

[danial 234]

how the concentration in blood remains constant. when glucose is high it is secreted and its conc increases. if it is always present then how on earth would glucagon work

 

[thementor]

Yes

are you guys serious? Oestrogen and progestrone were clearly shown.......it was FSH (A)

 

[thementor]

how the concentration in blood remains constant. when glucose is high it is secreted and its conc increases. if it is always present then how on earth would glucagon work

yeah both secrection and concentration is varied.

 

[thementor]

Cuticle: impervious non cellular layer that prevents water loss. Insulin: secretion varies, amount in blood constant. Excretionco2: only muscles and diffusion. Hormone: oestrogen. 5: B. 6: can be bacteria, can't be virus

how can insulin secretion be varied but concentration in blood be constant..? seriously...that is common sense. I have checked on wikiepdia as well, insulin concentration and secretion rate are both varied

 

[thementor]

No it's correct too. I wasn't conforming the ans..I know it's right:/ It's secretion depends on the amount of glucose in the blood, and when it's not needed anymore, it's broken down by the liver hence it's concentration remains constant

how the concentration in blood remains constant. when glucose is high it is secreted and its conc increases. if it is always present then how on earth would glucagon work

precisely danial....they are both varied

 

[thementor]

tell the answers:
1. cuticle- a transparent layer that allows light to enter?
2. Insulin- both constant?
3. excretion of carbon dioxide?
4. hormone missing?
5. in the block diagram ttpe in which we had to identify producers?
6. a new organism is discovered. what is could be and what it could not be?

Cuticle is a non-cellular layer preventing water loss...that was the answer
Insulin-both VARIED not constant
3.Muscles and diffusion
4.According to people it is Oestrogen...I do not knw...I choose FSH
5.B was the producer bcoz all carbon dioxide was going towards it
6.Virus not bacteria

 

[thementor]

What was NOT an effect of global warming? Was it animals migrating to cooler places? Does anyone remember option A? please share!

option A it was reduction in sea levels......global warming causes rise in sea levels NOT reduction.

 

[thementor]

According to me, it was A, i.e volume was increasing (breathing in) and the rib cage would rise accordingly.

yes it was A

 

[thementor]

Chloride ions taken by diffusion and nitrate ions taken by active transport as indicated by the graph.

yes got that one right too.

 

[thementor]

that's the FIRST impression the graph gave, i noticed the PRESSURE graph started decreasing at D, and by A it had partially decreased, while inspiration the diaphragm contracts and WE HAD TO POINT OUT WHEN IT FISRT started contracting!

look it was A bcoz it said when it started contracting..,NOT FIRST....I told you I have a good memory, I dont forget that easily........Anyways at A volume was increasing, which is why pressure was decreasing.If pressure in lungs is decreasing that means it is getting ready to take in air(inhalation) and so at A the diaphragm muscles STARTED CONTRACTION.,....there was no FIRST

 

[danial 234]

there was something amiss in hormone ques

 

[Snowysangel]

how the concentration in blood remains constant. when glucose is high it is secreted and its conc increases. if it is always present then how on earth would glucagon work

Oh. I thought it meant during the times when blood glucose is constant :/

 

[Snowysangel]

Cuticle is a non-cellular layer preventing water loss...that was the answer
Insulin-both VARIED not constant
3.Muscles and diffusion
4.According to people it is Oestrogen...I do not knw...I choose FSH
5.B was the producer bcoz all carbon dioxide was going towards it
6.Virus not bacteria

It was estrogen. Fsh was the curve which rose at the start of the period, while the uterine lining was still shedding. After the 7th day, estrogen level was supposed to increase but there was no curve depicting such a phenomenon

 

[Snowysangel]

Cuticle is a non-cellular layer preventing water loss...that was the answer
Insulin-both VARIED not constant
3.Muscles and diffusion
4.According to people it is Oestrogen...I do not knw...I choose FSH
5.B was the producer bcoz all carbon dioxide was going towards it
6.Virus not bacteria

Q6 was bacteria, not virus cause of the presence of DNA. I don't think virus not bacteria was given as an option

 

[Snowysangel]

how the concentration in blood remains constant. when glucose is high it is secreted and its conc increases. if it is always present then how on earth would glucagon work

But why would I take it that way? What was the exact question? The firsts colomb said sectetion...what was written in the 2nd one?