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Homework Help: Science: Biology

Recent Homework Questions About Biology

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biology
What structure in the moss is like the spore case in ferns?
Wednesday, September 26, 2012 at 9:11am

biology
draw digrams of phases of meiosis in a cell with 2N=. include with both divisional sequence, but not draw any of the subdivision of the phase e.g early prophase. distinghish between chromosomes from each parent, and detail the event of synapsis, recombination and crossing over...
Wednesday, September 26, 2012 at 12:17am

Biology (PLZ HELP)
Researchers discovered that zooplankton in Narragansett Bay now graze on floating algae more actively through the winter than they ever did before. What effect do you think this might have on the annual late-winter "bloom" of algae that occurs in the water?
Tuesday, September 25, 2012 at 7:06pm

Biology
Researchers discovered that zooplankton in Narragansett Bay now graze on floating algae more actively through the winter than they ever did before. What effect do you think this might have on the annual late-winter "bloom" of algae that occurs in the water?
Tuesday, September 25, 2012 at 6:17pm

Biology
They eat the garbage and turn it into fertilizer.
Tuesday, September 25, 2012 at 5:50pm

Biology
How are decomposers like a city's recycling center?
Tuesday, September 25, 2012 at 5:23pm

BIOLOGY
1.Which of the following principles is not part of Darwin's theory of evolution by natural selection? Individuals with the most favorable traits have the best chance of reproducing. More individuals are born than will be able to survive. Mutations are the ultimate source ...
Tuesday, September 25, 2012 at 4:54pm

biology
I am doing a project on Eukarya, Bacteria and Viruses where I have to explain why they are different. I know of their structural and reproductive differences but I am not sure about their uses or funtions. Please help!!
Tuesday, September 25, 2012 at 4:38pm

Biology
Kdl
Monday, September 24, 2012 at 9:20pm

Biology
Write a brief description of the procedure required to make 10mL each of 2 M, 1.5 M, and 1 M NaCl solution from a 2 M Stock NaCl. Write the description.
Sunday, September 23, 2012 at 10:34pm

biology
what would happen if an excess of mg(oh)2 is used
Sunday, September 23, 2012 at 10:19pm

Biology
Need to write a brief description of the procedure required to make 900mL of a 0.5 M NaCl solution. The formula weight of NaCl is 58.4g/mole.
Sunday, September 23, 2012 at 10:13pm

biology
how can you recognize carbohydrates from a list of biological molecules
Sunday, September 23, 2012 at 2:01pm

Biology
You have a flask with 100ml of fresh media. You place 200 bacteria int he flask. Assume that the bacterai were previously growing in the same kind of media and so the lag is 0. If you knew that this species of bacteria has a doubling time of 45 min in these particular conditon...
Sunday, September 23, 2012 at 1:45pm

Biology Help!!
Both. They are equivalent terms.
Sunday, September 23, 2012 at 12:46pm

Biology Help!!
Neurotransmitters are chemicals crossing the synapse.
Sunday, September 23, 2012 at 12:45pm

Biology
A company seeks to develop an herbicide that kills plants by directly interfering ( at the cellular level ) with plants' ability to maintain turtle pressure. An herbicide could accomplish this by disrupting the membrane of A) chloroplast B) chormplasts C) amyloplasts D) ...
Sunday, September 23, 2012 at 12:42pm

Biology Help!!
CT scans are not useful for studying cognitive processes because these processes occur in real time or occur in regions of the brain not accessible to CT scans Please explain.
Sunday, September 23, 2012 at 3:40am

Biology Help!!
valleys in the brain surface are called ______. sulci, fissures, or both? Give an explanation.
Sunday, September 23, 2012 at 3:20am

Biology Help!!
chemical information is transmitted from one neuron to another through neurotransmitters, terminal buttons, or axons?
Sunday, September 23, 2012 at 3:17am

Biology
Explain the medical importance of brain-mapping experiments?
Saturday, September 22, 2012 at 6:34pm

biology
how can you recognize carbohydrates from a list of biological molecules
Saturday, September 22, 2012 at 1:34pm

Biology
oxygen, oxygen. The process by which this occurred is highly speculative.
Saturday, September 22, 2012 at 12:15pm

Biology
The first cells evolved in an atmosphere that lacked free _____________. Their metabolism resulted in the accumulation of ________________ in the atmosphere. Fill in the blanks.
Saturday, September 22, 2012 at 11:53am

Biology
what ia molecules
Saturday, September 22, 2012 at 4:11am

Biology 9th grade (incomplete)
Whaqt following cellular structures and functions?
Saturday, September 22, 2012 at 12:59am

9th Grade Biology
Thank you SO much
Thursday, September 20, 2012 at 5:33pm

9th Grade Biology
3000kcal/day / (280g/fish * 8kcal/g * 60%) = 2.2 fish/day
Thursday, September 20, 2012 at 5:31pm

9th Grade Biology
Assume that the fish have an average mass of 280g. The average caloric value is 8kcal/g. The heron is able to digest 60% of the fishes’ mass. How many will it need to eat to sustain its caloric intake of 3,000kcal/day?
Thursday, September 20, 2012 at 4:54pm

biology
Heat destroys organic materials, doesn't it?
Thursday, September 20, 2012 at 10:31am

biology
darkies
Thursday, September 20, 2012 at 10:17am

biology
dorkies
Thursday, September 20, 2012 at 10:16am

BIOLOGY
Why does the quadrant streak technique able to give single colonies?
Thursday, September 20, 2012 at 9:48am

biology
Why are antibiotics and vitamins not normally autoclaved when preparing microbiological media?
Thursday, September 20, 2012 at 9:10am

biology
Why are antibiotics and vitamins not normally autoclaved when preparing microbiological media?
Thursday, September 20, 2012 at 9:09am

Biology 9th grade
Describle the following cellular structures and functions?
Wednesday, September 19, 2012 at 6:15pm

Biology 9th grade
describle plasma membrane
Wednesday, September 19, 2012 at 6:13pm

biology
What is the function of macronucleus and micronucleus in a paramecium?
Wednesday, September 19, 2012 at 5:07pm

biology
sorry babe gosh
Wednesday, September 19, 2012 at 1:06pm

biology
What are the step by step in finding the answer for this? 4C6H1206 carbon atoms: Hydrogen atoms: Oxygen atoms: Molecules:
Wednesday, September 19, 2012 at 12:32pm

Biology
1. c 2. c 3. d 4. c Just did the assessment :) Hope this helps! All of this was in the book and very easy to find so next time look it up in the book. Its easier then waiting, who knows how long, for an answer.
Wednesday, September 19, 2012 at 12:00am

Biology
Huh?????
Tuesday, September 18, 2012 at 10:24pm

Biology
Why is knee-jerk reflex exaggerated after the book is clenched?
Tuesday, September 18, 2012 at 10:07pm

biology
How does a glycerol mulecule differ from a carbohydrate molecule? Structeral formulas
Tuesday, September 18, 2012 at 9:41pm

Biology
An individual is born with a genetic abnormality that causes a reduction in the myelin found around a neuron. How might this disorder affect reaction rate? Explain your answer.
Tuesday, September 18, 2012 at 9:29pm

biology
Why are multicellular protista( seaweed) not classified in the plant kingdom?
Tuesday, September 18, 2012 at 8:12pm

Biology
How many lines surround the carbon symbol in a molecule?
Tuesday, September 18, 2012 at 6:24pm

Biology
http://anthro.palomar.edu/mendel/mendel_​2.htm
Monday, September 17, 2012 at 1:30pm

Biology
a. Do a Punnett square, with each parent is cs as a genotype. http://anthro.palomar.edu/mendel/mendel_​2.htm b. Try cc and ss.
Monday, September 17, 2012 at 1:29pm

biology
She is none of those names she i saying the truth it is cheating im only on here to check my answers so she dont deserve to be called that so you should back off bob
Monday, September 17, 2012 at 12:41pm

biology
slut
Monday, September 17, 2012 at 11:50am

biology
kims a biotch
Monday, September 17, 2012 at 11:49am

college biology
LDL is considered bad because it has a lower density, or weight per mass, and therefore tends to settle and accumulate along with excess cholesterol in the blood. HDL sweeps through to keep everything moving along and prevent clogging.
Monday, September 17, 2012 at 12:32am

Biology/Biotany
the rise of water in plants is presently most satisfactorily explained by which element: magnesium, sulphur, calcium, phosphorus, or manganese?
Sunday, September 16, 2012 at 6:58pm

Biology
4) If a person with blood type AB marries someone with type O, what would be the possible genotypes and phenotypes of their children? (show work if you can please)
Sunday, September 16, 2012 at 5:04pm

Biology
3) Caucasian humans have a gene which determines the curliness of hair. Individuals with straight hair are homozygous for the straight allele while those with curly hair are homozygous for the curly allele. Heterozygotes have wavy hair. a) If two wavy haired people mate, what ...
Sunday, September 16, 2012 at 5:03pm

Biology
Difficulty seeing, damage to the retina?
Sunday, September 16, 2012 at 12:04pm

Biology
All cells are specialized...
Sunday, September 16, 2012 at 11:42am

Biology
why do certain cells contain more of certain structures than do others
Sunday, September 16, 2012 at 11:14am

Biology
What difficulties would be experienced by an individual who did not demonstrate a pupillary light response?
Saturday, September 15, 2012 at 11:49pm

Principles of Biology 1
A team of students hypothesizes that the amount of alcohol produced in fermentation depends on the amount of sugar supplied to yeast. They want to use 5, 10, 15, 20, 25 and 30% sugar solutions. They propose to run each experiment at 40 degrees celcius with 5 mL of yeast. What ...
Saturday, September 15, 2012 at 11:05pm

Biology
If you added .1 M NaOH to 1 M HCO2H a few millimeters at a time what would happen?
Friday, September 14, 2012 at 7:19pm

Biology
If you added .1 M NaOH to 1 M HCO2H a few millimeters at a time what would happen?
Friday, September 14, 2012 at 6:13pm

biology
Iron is a limiting factor (:
Thursday, September 13, 2012 at 8:43pm

biology
Iron is a limiting factor (:
Thursday, September 13, 2012 at 8:43pm

7th Grade Science
http://scienceray.com/biology/botany/the​-five-main-features-of-plants/
Thursday, September 13, 2012 at 6:29pm

biology
It classifies words as common or proper nouns, transitive or intransitive verbs, singular or plural nouns, parts of speech, plus it's arranged alphabetically.
Thursday, September 13, 2012 at 5:50pm

biology
how does a dictionary illustrate a form of classification?
Thursday, September 13, 2012 at 5:47pm

science ( biology)
What are the various method a farmer should do to increase his land fertility by spending less money ???
Thursday, September 13, 2012 at 7:55am

biology
draw a graph of balloon diameter vs. temperature. what is the correlation?
Wednesday, September 12, 2012 at 11:08pm

biology
what is the mass in grams of 1.03 kg 1105g and 1075000mg
Wednesday, September 12, 2012 at 9:50pm

Biology
http://exploringorigins.org/ribozymes.ht​ml
Wednesday, September 12, 2012 at 5:03pm

Biology
Describe the RNA world hypothesis, and discuss specific evidence that supports this scientific hypothesis. i know part of it is The RNA world hypothesis proposes that self replicating ribonucleic acid molecules were precursors to current life. but i dont know the evidence part.
Wednesday, September 12, 2012 at 4:44pm

AP Biology
1.Oparin and Haldane hypothesized that the Earth's early atmosphere was strongly (2 points) acidic. oxidizing. reducing. ~~ ionic. 2.The most significant outcome of the Miller and Urey experiments was that they (2 points) synthesized living cells from nonliving matter. ...
Wednesday, September 12, 2012 at 4:06pm

Biology
0 because it depends on the mother , not the father
Wednesday, September 12, 2012 at 3:09am

Biology 111
They are basically simpler forms of proteins :D to cut it short
Wednesday, September 12, 2012 at 3:06am

college biology
If someone has abnormally low cholesterol levels then perhaps it is being consumed by processes that need cholesterol faster than it is being synthesized or brought in through the diet. Perhaps excess bile production, inability to use dietary cholesterol, excess steroid ...
Tuesday, September 11, 2012 at 9:31pm

biology
Explain why a single base deletion could be potentially more damaging to protein synthesis than a deletion of three consecutive bases confined to one triplet
Tuesday, September 11, 2012 at 8:29pm

biology
One in every 685 children born in the chicoutimi area of quebec province has tyrosinemia. It is cause by having two copies of the receissive allele. Under the assumptions of Hardy-Weinberg equilibrium, calculate the value of q required to produce this proportion of afflicted ...
Tuesday, September 11, 2012 at 7:10pm

college biology
Describe some reasons why a patient might have abnormally low blood cholesterol.
Tuesday, September 11, 2012 at 5:14pm

college biology
Why LDL is considered the bad cholesterol and HDL the good cholesterol
Tuesday, September 11, 2012 at 5:13pm

biology
Do production of anti-A, anti-B, and anti-Rh antibodies require the exposure to antigens
Tuesday, September 11, 2012 at 4:54pm

biology
A gene for flower color can have multiple alleles like purple, white, or red.
Tuesday, September 11, 2012 at 1:55pm

biology
All living things must have other life near them in order to survive.
Tuesday, September 11, 2012 at 11:52am

biology
What is meant by the statement, "Living things do not exist in isolation"?
Tuesday, September 11, 2012 at 11:44am

Biology 111
http://en.wikipedia.org/wiki/Amino_acid
Tuesday, September 11, 2012 at 10:51am

Biology 111
what is the amino acids?
Tuesday, September 11, 2012 at 9:45am

Biology
Plants require the right balance of macro and micro nutrients (macro=large amounts, micro= trace amounts) to assist them in growth, this balance is specific to different plant species. Potassium is an example of a macronutrients. One use of potassium is that it is the nutrient...
Tuesday, September 11, 2012 at 6:44am

Biology
A plant does not use potassium for a building material or energy source, but it stops doing photosynthesis and dies if it runs out of potassium. Why?
Tuesday, September 11, 2012 at 6:10am

Biology
A plant does not use potassium for a building material or energy source, but it stops doing photosynthesis and dies if it runs out of potassium. Why?
Tuesday, September 11, 2012 at 6:08am

Biology 1
http://www.jiskha.com/display.cgi?id=133​1587125
Monday, September 10, 2012 at 6:14pm

Biology 1
Briefly describe the basic characterisitics that all living things on Earth have in common.
Monday, September 10, 2012 at 6:07pm

Biology
make a statement relating hydrogen ion concentration to the acidity and basicity of solutions
Monday, September 10, 2012 at 11:40am

Biology
If a solution A has 10,000 times as many H+ ions as solution B, what is the difference in pH units between the two solutions?
Monday, September 10, 2012 at 11:39am

biology
For each of the four major classes of organic compounds, identify the subunits. Describe the general process by which all of these subunits are joined together to form larger molecules.
Monday, September 10, 2012 at 10:24am

math
I have a math question for my cell biology class. A molecule exchanges places with its neighbor every 10^-7 seconds. It will diffuse from one end of a 2 micrometer cell to the other in 1second. Ok now I have a 6M x 6M room filled with 4cm ping pong balls. I have to determine ...
Sunday, September 9, 2012 at 5:40pm

College Biology
Calculate the concentration in Moles for a 5mgMgCl2 sample in 2L of solution. Then how many ions are in it?
Sunday, September 9, 2012 at 2:03pm

Biology
Molarity (M) = mol / liter = moles/ 1000ml Therefore, 0.8M = 0.8 mol/ 1000 ml Know that the units cancel out to mol: (0.8 mol/1000 ml)*(150ml) = ? mol if you multipy ? mol by the molar mass of NaCl , you would end up with grams of NaCl (? mol)*(__ g/ mol)= ___g NaCl
Saturday, September 8, 2012 at 6:12pm

Biology
How many grams of NaCl do you need to make 150ml of a 0.8M stock solution?
Saturday, September 8, 2012 at 5:02pm

Biology
The Burgess Shale Formation, located in the Canadian Rockies of British Columbia, is one of the world's most celebrated fossil fields,[2] and the best of its kind.[3] It is famous for the exceptional preservation of the soft parts of its fossils. At 505 million years (...
Saturday, September 8, 2012 at 4:00pm

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