High School Level Science

Calvin Cycle

Calvin Cycle

What are the functions of NADPH, ATP and CO2 in the Calvin Cycle?

Thanks?

bob-e   2033   4 Replies

bio_man

Taxonomic

Taxonomic

Hi everyone I have a few questions that I need help with =)

How does the taxonomic classification system in this lesson compare to the classification system in Lesson 1 (biosphere, biome, ecosystem, community, population, species)?

ghosthunter   4941   2 Replies

ghosthunter

Which of hte following is a correct statement about the relationship between pH and the hydrogen-ion

Which of hte following is a correct statement about the relationship between pH and the hydrogen-ion

HI please help me wiht the correct answer and why it is correct. thaaaaankkkkks

1. Which of hte following is a correct statement about the relationship between pH and the hydrogen-ion concentration of a solution?
A. There are no hy

patsfan22   1182   1 Reply

bio_man

Animals produce most of their nitrogen-containing wastes during

Animals produce most of their nitrogen-containing wastes during

Thanks for your help! please help me with the correct answer and an explantion why it is correct

1. Animals produce most of their nitrogen-containing wastes during
A. Protein digestion
B. Carboyhydrate digestion
C. Lipid dig

patsfan22   4517   1 Reply

bio_man

Which of the following is an example of a hydrogen bond?

Which of the following is an example of a hydrogen bond?

Please help me choose the right answer and explain why it is correct. Thanks so much

1. Which of the following is an example of a hydrogen bond?
A. The peptide bond btwn amino acids in a protein
B. The bond btwn an oxygen atoms a

patsfan22   1158   3 Replies

bob-e

True or false: cellular respiration

True or false: cellular respiration

1.  The following reaction takes place in animal cells but not in plant cells
             C6H12O6 + 6O2 -> 6CO2 + 6H2O

I picked true but the answer states that it's false.  Does cellula

bob-e   1497   1 Reply

bio_man

matter cycles and energy

matter cycles and energy

On Earth, matter cycles and energy “flows.”

a) To make this statement clearer, explain how the concept of matter is different from that of energy in matter and energy exchange in the biosphere.

b) Use graphics software to draw

BlueMoon   7340   3 Replies

bio_man

echnology is generally developed to meet your needs and to make you better at completing tasks. Disc

echnology is generally developed to meet your needs and to make you better at completing tasks. Disc

Technology is generally developed to meet your needs and to make you better at completing tasks. Discuss how technology affects your ecological footprint positively and negatively.

BlueMoon   4217   1 Reply

bio_man

Identify the biogeochemical cycles that are involved in acid deposition, and explain how it forms.

Identify the biogeochemical cycles that are involved in acid deposition, and explain how it forms.

a) Identify the biogeochemical cycles that are involved in acid deposition, and explain how it forms.
 
(Would nitrogen cycle be one?)

   
b) Describe the impact of acid deposition on a deciduous forest ecosystem.

BlueMoon   3642   2 Replies

star

some ecological questions

some ecological questions

hey every body >>> i have some easy cheesy ecological questions

1.name an habitat of a tiger?
2.what is your niche? (can i say : I'm a student)

AND THAT'S ALL >>> THANK U    &nbs

hasanqusay   1290   1 Reply

bio_man

How do you recognize the cycling of water?

How do you recognize the cycling of water?

How do you recognize the cycling of water? 

BlueMoon   704   1 Reply

bio_man

Enzyme Catalase Lab

Enzyme Catalase Lab

Hello everyone!

We are about to begin this lab concerning catalase breaking down hydrogen peroxide.
I just wanted to do some extra research before we begin, and ask what are the properties of catalase, how does it break down hydrogen

rainbows246   8338   12 Replies

star

The Changing Atmosphere and Global Warming

The Changing Atmosphere and Global Warming

List four factors that could affect the current oxygen and carbon dioxide levels, and then predict possible effects if the levels changed. Be sure to provide clear and reasonable answers.


The percentage for carbon dioxide, 0.03%, se

BlueMoon   3261   1 Reply

bio_man

much questions about ecology

much questions about ecology

hey every body . i want some help with these 5 sheets . i already did them but i want to check my answers
so these are the 5 sheets

hasanqusay   1008   1 Reply

bio_man

In stages 1, 2, and 3 of cellular respiration (glycolysis, pyruvate oxidation and the kreb's ...

In stages 1, 2, and 3 of cellular respiration (glycolysis, pyruvate oxidation and the kreb's ...

In stages 1, 2, and 3 of cellular respiration (glycolysis, pyruvate oxidation and the kreb's cycle), every time that two hydrogen atoms are removed form a intermediate (eg. when malate becomes oxaloacetate) and a NAD+ molecule reduces to become

rainbows246   1028   1 Reply

bio_man

A Balance Between Energy and Matter

A Balance Between Energy and Matter

What might be the effects of increasing amounts of UVR
on productivity?

What indirect effects might increasing UVR have on
animals?

Suggest an approach to counteract increased levels of
UVR in ecosystems. What wou

BlueMoon   9161   1 Reply

bio_man

what does nucleolus do while other organelles in a cell make proteins?

what does nucleolus do while other organelles in a cell make proteins?

i am doing a little project about how a cell can make a protein....
and while i was explaining all the organelles' jobs, i was stuck
what is nucleolus? what does it do to make proteins?
cna you guys pleaseee use easy words bec

gangdongwon3   2753   1 Reply

sarah!

Bar graphs and graphing...

Bar graphs and graphing...

hey everybody <<<>>> happy Tuesday
i have another question about graphing an experiment

_-_-_-_-_-_-_ my question is _-_-_-_-_-_
CAN ANY
  BODY HELP
     ME WITH QUESTION    

hasanqusay   878   2 Replies

gangdongwon3

Which of the following interactions can be correctly be labeled as coevolution?

Which of the following interactions can be correctly be labeled as coevolution?

Part 2 on explanations for the correct answers:

1. Which of the following interactions can be correctly be labeled as coevolution?
A. a genetic change in a virus taht allows it to exploit a new host, which responds to virus-imposed se

patsfan22   6554   2 Replies

bio_man

Why does continental drift not have a direct effect on the amount of precipitation in an area?

Why does continental drift not have a direct effect on the amount of precipitation in an area?

PLease help with giving me an explanation as to why these answers are correct:
1. Why does continental drift not have a direct effect on the amount of precipitation in an area?

2. In temperate lakes, the surface water is replenished w

patsfan22   4896   4 Replies

patsfan22

How are these cells well adapted to their functions?

How are these cells well adapted to their functions?

Olfactory receptor cells.
Rod and cone cells in our eyes.
Stretch receptor cells?

breakeven   2641   1 Reply

bio_man

Me needy help on ecosytems :o

Me needy help on ecosytems :o

 How can changes in an ecosytem be determined and analyzed

Nalu-Chan   639   1 Reply

bio_man

URGENT

URGENT

the table below shows the observations made of three different cells. deteremine as much as you can about each type of cell. for example, are the cells prokaryotic or eukaryotic; plant or animal?

[   cell wall ] cell membrane][chlo

shyshy   954   3 Replies

rainbows246

Designing my own experiment?

Designing my own experiment?

I have to design an experiment for an enzyme in the duodenum.
Can anyone give me some ideas?

bob-e   980   3 Replies

bio_man

helppp

helppp

What organelles would be found in large quantities in a fat cell? In a B cell? In a kidney cell?

shyshy   790   1 Reply

bio_man

Enzyme questions?

Enzyme questions?

Why doesn't pepsin break down protein cells in the stomach?
Also, some bacteria are able to survive in the stomach despite the high pH level.  How do they do so?


thanks!

bob-e   977   1 Reply

bio_man

Biodiversity and Biomagnification

Biodiversity and Biomagnification

Hi,
I have 2 questions that i need help with:

How does the cycling of a harmful element compare to a biogeochemical cycle?

What can biodiversity and biomagnification tell you about the biosphere’s state of equilibrium?

BlueMoon   6781   1 Reply

bio_man

The 6th Step of Glycolysis?

The 6th Step of Glycolysis?

During the sixth step, each 3-phosphoglycerate becomes oxidized by a NAD+.  However, in my textbook, it states that it forms a NADH + H.  I know a hydrogen comes off the 3-phosphoglycerate molecule and attches itself to the NAD+ to form NAD

bob-e   1325   1 Reply

bio_man

ATP production article questions?

ATP production article questions?

The article states:
the apparatus that manufactures ATP is shaped rather like a microscopic water wheel powering a hammer that mints coins.  The wheel is turned by a steadily flowing stream of hydrogen atoms.
note: the coins here repre

bob-e   1086   2 Replies

bio_man

The purpose of my lab?

The purpose of my lab?

I did a lab and there were 5 solutions.
1. pure distilled water
2. hydrochloric acid and distilled water
3. hydrochloric acid and pepsin
4. hydrochloric acid and sodium bicarbonate
5. hydrochloric acid and boiled pepsin.

bob-e   1015   5 Replies

bio_man

Carbon and H2O Cycle

Carbon and H2O Cycle

I need to make a Carbon and H2O cycle of the Brazilian wetlands 'Pantanal'. I need to cite specific sources of Carbon and specific things that take out CO2 of the region. I also need to state specific sources if water and things that take w

MattD   996   3 Replies

bio_man

What are the general uses/importance of this hydrocarbon? (Alcohol)

What are the general uses/importance of this hydrocarbon? (Alcohol)

Okay, not really.

For a project, can someone explain:
what are the general uses/importance of this hydrocarbon,
what are the sources of alcohol (where is it found or made),
and what are some properties of alcohol?

rainbows246   999   4 Replies

bio_man

The Optimum pH for pepsin?

The Optimum pH for pepsin?

I recently did a lab with egg whites and the enzyme pepsin. 
Out of the 5 test tubes, only the one with 5ml of hydrochloric acid and 5ml of pepsin dissolved the egg white.  However, before the egg white was put in the test tube, the p

bob-e   7495   3 Replies

bio_man

lab questions

lab questions

hey everybody >>> happy saturday >>> i have some lab questions today >>>

1.what should you do if you spill chemicals during a lab?
2.Which part of the meniscus should be level with the line?
3.which is

hasanqusay   800   1 Reply

bio_man

Biology seminars - URGENTLY needed help please!

Biology seminars - URGENTLY needed help please!

Can someone help find a scientific, peer reviewed article that pertains to molecular genetics and is controversial and discussion-provoking?
Or have any suggestions for a topic so I can have more ideas, that would be appreciated as well.
Th

rainbows246   1105   5 Replies

bio_man

Write the correct hypothesis for the problems...

Write the correct hypothesis for the problems...

 hey every body i want the hypothesis for each problem below

usually some of them it can be solved like this : "if.... increase then .... increase or dicrease" but some i don't know how to make a hypothesis for them

hasanqusay   1757   5 Replies

bio_man

Spontaneous Processes and Entropy?

Spontaneous Processes and Entropy?

water flowing downhill is a "spontaneous process" and that it increases the entropy of the environment.  Can someone explain why?
Also, water will not go uphill spontaneously because an input of energy is required.  Why would

bob-e   1831   1 Reply

bio_man

Science project ideas?

Science project ideas?

I have to come up with my own IA (basically a science project) and my teacher can't help me at all. All she can do is give me the subject.

The subject is basically 'the effect of ___ (pH, temperature, or concentration I can pick)

animallover435   1884   5 Replies

bio_man

Another Essay - How does cell structure relate to their function

Another Essay - How does cell structure relate to their function

As in my first post i will show you what i have got:

Unicellular - Unspecialised
- Paramecium
- Plasmodium

Multicellular
- Tracheal (cilliated cells)
- Alveoli epithelium
- Duodenum - (micro villi on

Xooki3   6509   3 Replies

bio_man

insulin

insulin

Diabetes mellitus patients who lack insulin have all of the following effects on the body except
A. cells that remain impermeable to glucose, which prevents the uptake of glucose by cells
B. the individuals is very tired as cells are starve

BIOLOGY FREAK   1094   3 Replies

bio_man