Biology - March 2007

no I'm not a geek, I just need to finish a stupid science essay.
No dumb answers please.

Thank you.

2007-03-26 06:36:18 · 5 answers · asked by supersonic_152000 1

2007-03-26 06:22:00 · 1 answers · asked by Mets 1

Look up the meanings of the pre-fixes: endo-, exo-, and cyto-. notice structures and processes have names that provide clues to their meanings.

2007-03-26 06:14:11 · 3 answers · asked by cherryvalley2006 2

2007-03-26 06:13:44 · 4 answers · asked by Mets 1

explain how a cell can take in substances too big to pass trhough teh membrane

2007-03-26 06:12:27 · 1 answers · asked by cherryvalley2006 2

2007-03-26 06:11:30 · 9 answers · asked by Car 2

name two active tranports mechanisms that enable cells to store certain substances

2007-03-26 06:10:37 · 1 answers · asked by cherryvalley2006 2

Many kinds of organisms, such as plants have a cell wall to protect and support their cells.
A.true
B.false

2007-03-26 06:06:15 · 5 answers · asked by Anonymous

Facilitated infusion channels enable sodium ions to?
A.absorb into the cell
B.rush away from the cell
C.rush back into the cell
D.surround the cell

2007-03-26 06:05:09 · 2 answers · asked by Anonymous

The sodium-potassium pump is an active transport system that enables to admit what?
A.ions
B.Proteins
C.cell membrances
D.sodium

2007-03-26 06:03:45 · 3 answers · asked by Anonymous

The mechanism of energy relases by the action of proton pumps is called?
A.diffusion
B.osmosis
C.chemiosmois
D.electrical currents
E.all the above
F.none of the above

2007-03-26 06:01:51 · 2 answers · asked by Anonymous

1. Imagine that you have done a gram stain and determined what antibiotic to use to kill the bacterium bacilli. If you expose the bacterium to the antibiotic, how will the antibiotic kill it?

2. If you expose the protozoan Amoeba to the antibiotic, would you expect it to kill the protozoan? Why or why not? (Hint: If you take an antibiotic, does it kill your body cells?)

2007-03-26 06:01:40 · 1 answers · asked by confidential 2

2007-03-26 05:58:33 · 2 answers · asked by sweetiepie2008 1

2007-03-26 05:57:14 · 3 answers · asked by Anonymous

I want to be throughal with my answer, so any info you can throw my way is greatly appreciated.

2007-03-26 05:54:52 · 2 answers · asked by skoolgirl 1

2007-03-26 05:52:52 · 2 answers · asked by skoolgirl 1

2007-03-26 05:34:49 · 5 answers · asked by Anonymous

2007-03-26 05:13:01 · 1 answers · asked by nogs 1

2007-03-26 05:06:30 · 9 answers · asked by Anonymous

How is the blood stopped from gushing out of the body whilst being operated on?

2007-03-26 05:06:08 · 5 answers · asked by Chaserette 1

2007-03-26 04:58:20 · 7 answers · asked by mandaloo_mandi 1

2007-03-26 04:32:37 · 4 answers · asked by blue_bee 4

1: Blood minus all cells and fibrin
corpuscle
capillary
serum
platelet

2: Blood cell that carries oxygen to the body cells
red corpuscle
white corpuscle
platelet
amoeba

3: Hereditary disease condition in which the blood fails to coagulate
anemia
color blindness
hemophilia
plasma

4: Vitamin in blood important for the part it plays in coagulation
Vitamin A
Vitamin D
Vitamin E
Vitamin K

5: Disease resulting from lack of or malfunctioning of hemoglobin in the blood
anemia
fainting
hemophilia
diabetes

6: Cells in blood that destroy invading disease-producing bacteria
platelets
skin cells
red corpuscles
white corpuscles

7: The wave of heart beat is called
tick
beat
flow
pulse

8: The largest artery in the body is the
vena cava
aorta
capillary
ventricle

9: Hardening of the arteries is referred to as
anemia
hemopbelia
pericardums
arteriosclerosis

10: The instrument used to measure blood pressure is a
electrocardiogram
watch
sphygmomanometer
arm band

11: The smallest blood vessel in the body is a
capillary
vein
artery
red corpuscle

12: A blood vessel that carries blood back to the heart is
artery
vein
capillary
platelet

13: The largest percentage of the body composition is
bone
skin
blood
water

14: The liquid which bathes the body cells is known as
blood
water
lymph
saliva

15: Blood is pumped from the heart to the entire body by the
ventricles
lungs
atria
nerves

2007-03-26 04:07:17 · 8 answers · asked by Anonymous

hmm...i wonder

2007-03-26 03:55:35 · 11 answers · asked by fullmental 2

Here's another situation. This time you predict what might happen! In Australia there used to be a lot of sugar cane plantations. These sugar cane plantations were plagued by a beetle known as the Frenchie Beetle. In order to control the Frenchie Beetle, plantation owners introduced a giant species of toad known as the cane toad that they hoped would eat the beetles. Unfortunately, the cane toad was not at all interested in eating the Frenchie Beetles. However they proved very adept at surviving in the Australian wilderness and their numbers soon multiplied. It turns out their skin has a mild toxin in it, so when the Australian predators tried to eat them they got violently sick and often died. Right now, there are an enormous number of these toads.

What do you think is going to happen in the future? Draw on Darwin's ideas to explain your prediction.

2007-03-26 03:55:24 · 3 answers · asked by bb761866 2

2007-03-26 03:52:59 · 6 answers · asked by blue_bee 4

How does this phenomenon illustrate Darwin's principles of evolution? Give at least three principles illustrated by this example and explain your reasoning.

2007-03-26 03:52:28 · 6 answers · asked by bb761866 2

A. Carbon dioxide is released into the atmosphere.
B. Animals consume the plants.
C. Plants use carbon dioxide to make biological molecules.
D. Bacteria break down organic molecules in dead organisms.

2007-03-26 03:46:04 · 2 answers · asked by jessica_stay 1

Which type of sugar solution would work best for this experiment? How would i work out the rate at which starch was being synthesised by the leaf discs?

2007-03-26 03:45:52 · 5 answers · asked by Anonymous

Blood that is 100% saturated with oxygen carries 105 cm^3 of oxygen in 1 dm^3 (litre) of blood.

Calculate the volume of oxygen released from 1 dm^3 of blood when that has become 90% saturated.

Now This is how i didn the question

100% ---> 105
90% ----> x

x= 90 x 105/100%

x= 94.5 dm^3

this may be wrong... Any suggestions into solving this problem would be very helpful. I have search in 4 texted books btw and no luck.

2007-03-26 03:19:51 · 4 answers · asked by Miss LaStrange 5