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Homework Help: Science: Biology

Recent Homework Questions About Biology

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biology
What is a tissue-specific knockout mouse and an inducible knockout mouse?
Monday, November 5, 2012 at 6:45pm

biology
In which sequence did aerobes, anaerobes, chemolithotrophs and cyanobacteria evolve? What evidence is there to support your answer. If someone can answer please. I think its talk about how cyanbactoria evolve.
Sunday, November 4, 2012 at 7:57pm

biology
purpose of the special sense organs
Sunday, November 4, 2012 at 4:23am

Conservation Biology
What is the population total at one hundred years if you begin with two animals and they reproduce at 25% annually?
Saturday, November 3, 2012 at 10:28pm

SAT Essay
Assignment: Can knowledge be a burden rather than a benefit? Plan and write an essay in which you develop your point of view on this issue. Support your position with reasoning and examples taken from your reading, studies, experiences, or observations Essay: Knowledge can ...
Saturday, November 3, 2012 at 7:14pm

biology
If they are both tall, the tall gene is dominant. You can use a Punnett square to determine the possible linkages. If you don't know how to use a Punnett square, Google it.
Saturday, November 3, 2012 at 12:55pm

biology
A homozygous tall Man got married to a heterozygous tall woman and they produce four offspring. Illustrate with cross - links the phenotype and genotype of their children
Saturday, November 3, 2012 at 11:30am

biology
http://www.montana.edu/wwwai/imsd/alcoho​l/Vanessa/vwpancreas.htm
Saturday, November 3, 2012 at 11:22am

biology
http://pancreasmd.org/education_home.htm​l
Saturday, November 3, 2012 at 11:21am

biology
what is the function of pancreas
Saturday, November 3, 2012 at 7:41am

biology
what is the function of adrenel glands
Saturday, November 3, 2012 at 7:40am

SAT Essay
Assignment: Can knowledge be a burden rather than a benefit? Plan and write an essay in which you develop your point of view on this issue. Support your position with reasoning and examples taken from your reading, studies, experiences, or observations Essay: Knowledge can ...
Friday, November 2, 2012 at 3:33pm

personal statement
this is my personal statement. plese check my grammar and what other stuff i can add or remove? thanks Ever since I was a little kid and till a year ago, I really didn’t know what I wanted to be in life. I imagined myself to be a teacher when I was 8 years old. As I grew ...
Friday, November 2, 2012 at 2:54pm

Biology
Name of banana's stem,flower
Thursday, November 1, 2012 at 9:15pm

biology
It helps in breathing.
Wednesday, October 31, 2012 at 8:25pm

biology
It holds urine/urea.
Wednesday, October 31, 2012 at 8:22pm

biology
what is the function of the diaphragm?
Wednesday, October 31, 2012 at 6:57am

biology
how does the bladder act in elimination?
Wednesday, October 31, 2012 at 6:55am

Biology
In humans, W=widows peak while w=normal hair line and A=attached earlobes while a= unattached earlobes. A heterozygote in both traits reproduces with a similar heterozygote in both traits. What is the chance of any one child having the same genotype of the parents?
Tuesday, October 30, 2012 at 8:02pm

biology
THE ORGANS of the senses may be divided into (a) those of the special senses of taste, smell, sight, and hearing….
Tuesday, October 30, 2012 at 2:56pm

biology
http://www.google.com/search?q=musculosk​eletal+system&hl=en&prmd=imvnsb&tbm=isch​&tbo=u&source=univ&sa=X&ei=-P-PUNaDDcfjq​gGJw4H4CA&sqi=2&ved=0CDcQsAQ&biw=711&bih​=453
Tuesday, October 30, 2012 at 12:28pm

biology
what are the different parts that comprise the musculoskeletal system
Tuesday, October 30, 2012 at 6:18am

biology
what is included in the special sense organs
Tuesday, October 30, 2012 at 6:11am

biology
Choose the total number of each item requested below. 4C6H12O6 Carbon atoms Hydrogen atoms Oxygen atoms Molecules
Monday, October 29, 2012 at 12:21pm

Biology
Chemical bond formation
Monday, October 29, 2012 at 12:23am

BIOLOGY/CHEMISTY
a student uses the unduiluted glucose stock solution in a reaction and finds that the absorbance values over 90 seceonds are all 1.900. What does this result tell you abou the enzyme activity of glucose oxidase in this reaction after the 90 seconds time point? Would it be ...
Sunday, October 28, 2012 at 11:33pm

Biology
IMPOACHING BY HUMAN AND DUE TO DEFORESTATION.
Sunday, October 28, 2012 at 11:29am

biology
If your ears were larger, you would: a. be able to hear sounds at lower amplitude (softer sounds) b. lose the ability to hear low amplitude high frequency sounds c. not experience any difference in your hearing ability d. none of the above
Saturday, October 27, 2012 at 6:18pm

biology
When the stereocilia of a hair cell in the inner ear bends, it causes: a. potassium ions to enter the hair cell b. you to hear low frequency sounds c. chloride ions to leave the basilar membrane d. all of the above
Saturday, October 27, 2012 at 6:14pm

science
http://www.biology4kids.com/files/plants​_photosynthesis.html http://biology.clc.uc.edu/courses/bio104​/photosyn.htm http://www.emc.maricopa.edu/faculty/fara​bee/biobk/biobookps.html
Saturday, October 27, 2012 at 11:51am

Biology
Ha fellow Jjay student
Thursday, October 25, 2012 at 12:04am

Biology
Oxidized (blue) DPIP becomes colorless when it is reduced – that is, when it receives electrons. A diagram of the photosynthetic light reaction shows that water molecules are the source of these electrons. How is it that the DPIP was only able to receive reducing ...
Wednesday, October 24, 2012 at 11:34pm

Biology
kasod oaef emeoj
Wednesday, October 24, 2012 at 7:08pm

biology
Explain how you might determine the role of an essential developmental gene using the following as a guide: *use of model organism? Why? *Use of conditional knockouts/knockouts/hypomorphic allele/null allele/ RNAi? Why? *locate its products, mRNA and protein *effects if ...
Wednesday, October 24, 2012 at 3:36pm

Biology
1)Animal cells prefer to be in isotonic solution, while plant cells prefer to be in hypotonic solution. Explain what this means and why it is so. 2.) In terms of Gibbs free energy, what does “unstable” mean? Also, give at least two additional ways to say that a ...
Wednesday, October 24, 2012 at 12:10pm

Biology
cuz they r boring
Wednesday, October 24, 2012 at 9:32am

Biology
thanks :)
Tuesday, October 23, 2012 at 9:49pm

Biology
Plants have to do photosynthesis which uses water, mainly found in vacuoles, however I do not know why animals have vacuoles.
Tuesday, October 23, 2012 at 9:41pm

Biology
WHY WOULD PLANT CELLS HAVE 1 LARGE CENTRAL VACUOLE AND NOT SEVERAL SMALL ONES LIKE IN AN ANIMAL CELL?
Tuesday, October 23, 2012 at 9:40pm

Biology
WHY WOULD PLANT CELLS HAVE 1 LARGE CENTRAL VACUOLE AND NOT SEVERAL SMALL ONES LIKE IN AN ANIMAL CELL?
Tuesday, October 23, 2012 at 9:38pm

Biology
HOW DOES A CELL WALL HELP WITH “TURGOR PRESSURE?”
Tuesday, October 23, 2012 at 9:30pm

Biology
WHAT CELL PART AIDS IN MOVEMENT AND INCREASES THE SURFACE AREA?
Tuesday, October 23, 2012 at 9:21pm

Biology
WHAT ORGANELLE WILL BE USED DURING CELLULAR REPRODUCTION TO HELP ANCHOR THE SPINDLE FIBERS?
Tuesday, October 23, 2012 at 9:19pm

Biology
Golgi apparatus
Tuesday, October 23, 2012 at 9:12pm

Biology
WHAT ORGANELLE AIDS IN TRANSPORTING SUBSTANCES?
Tuesday, October 23, 2012 at 9:10pm

Biology
WHAT ORGANELLE IN THE ANIMAL CELL AIDS IN DIGESTING OLDER CELL PARTS AND WASTES?
Tuesday, October 23, 2012 at 9:02pm

Biology
WHERE IN AN ANIMAL CELL IS WATER STORED?
Tuesday, October 23, 2012 at 9:01pm

Biology
Sure.
Tuesday, October 23, 2012 at 9:16am

Biology (cell-molec)
You wish to perform a restriction digest in a 20uL volume. Your DNA is 0.20 ug/uL and you wish to digest 1.0 ug. Your restriction enzyme is provided as 0.2 U/uL. Fill in the appropriate volumes: H2O, 10Xbuffer, DNA, and restriction enzyme. Please show work. I'm more ...
Monday, October 22, 2012 at 5:43pm

Biology
It's a logarithmic scale. http://www.sciencebuddies.org/science-fa​ir-projects/project_ideas/Chem_AcidsBase​spHScale.shtml
Friday, October 19, 2012 at 7:14pm

Biology
Explain why the pH scale stretches between the numbers 0 to 14.
Friday, October 19, 2012 at 7:11pm

biology: the study of life
3. false 4. true 4.true 6. alive...characteristcs 7.bio 8. idk and idc
Thursday, October 18, 2012 at 8:57pm

Question regarding career options
I assume you're in 9th or 10th grade. Take all of the physiology, biology, and phys ed courses you can. By about your junior year in college, you may have narrowed your goals to something more specific. I have doubts about the need for more gym franchises in the future, ...
Thursday, October 18, 2012 at 6:23pm

biology
sooo whats the answer?
Thursday, October 18, 2012 at 1:22pm

12th science (mathbio) biology
Two plants biological information
Thursday, October 18, 2012 at 4:14am

Biology
There might be recessive differences in the genotype that would not necessarily show up in the phenotype.
Thursday, October 18, 2012 at 2:13am

Biology
There might be recessive differences in the genotype that would not necessarily show up in the phenotype.
Thursday, October 18, 2012 at 2:13am

Biology
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See post under name of Leah.
Thursday, October 18, 2012 at 2:11am

Biology
What is the probability that any two humans with the same parents will be identical(other than identical twins)for each parent's gametes?
Wednesday, October 17, 2012 at 11:09pm

Biology
How do variations arise during meiosis?
Wednesday, October 17, 2012 at 10:59pm

Biology
What is the probability that any two humans with the same parents will be identical (other than identical twins) to make an identical zygote?
Wednesday, October 17, 2012 at 10:58pm

Biology
What is the probability that any two humans with the same parents will be identical(other than identical twins)for each parent's gametes?
Wednesday, October 17, 2012 at 10:57pm

biology
what effect would the absense of carbohydrates have on an animal cell membrane?
Wednesday, October 17, 2012 at 10:44pm

biology question??
explain how Eukaryotic cells are attached to eachother? why is it important??
Wednesday, October 17, 2012 at 10:22pm

Biology
4,000
Wednesday, October 17, 2012 at 8:43pm

Statistics
Thirty-two students took a 50-item Biology test. The average score obtained is 42. The next day, three students who were absent took the test and obtained 35, 39 and 43. What is the average score of the 35 students?
Wednesday, October 17, 2012 at 6:52pm

biology, test tom!
i know. but if a plant can do both. how is that an adaption?
Monday, October 15, 2012 at 8:26pm

biology, test tom!
It allows them to reproduce without a partner.
Monday, October 15, 2012 at 7:10pm

biology, test tom!
how is plants doing sesxual and asexual an adaptation?
Monday, October 15, 2012 at 7:08pm

Biology
11) The recent Nobel Prize in Physiology or Medicine was awarded based on two sets of experiments. The first of these is described in the following abstract: An important problem in embryology is whether the differentiation of cells depends upon a stable restriction of the ...
Monday, October 15, 2012 at 12:03pm

Biology
Compare and contrast fertilization in the mouse and the sea urchin – how they similar and how do they differ (and why?). Think about the structures, events and results. You might want to do this by breaking down the steps. Also address the key role of Ca2+.
Monday, October 15, 2012 at 12:02pm

Biology
Describe the process of gastrulation in the sea urchin – what molecular and cellular changes are needed to drive the movements that one observes?
Monday, October 15, 2012 at 12:02pm

Biology
We looked at four different families of signal transduction cascades. Describe three general, common features that are, in some way, part of each of these cascades.
Monday, October 15, 2012 at 12:01pm

Biology
3) The following statements are generalizations about cell signaling events made by a student with a basic knowledge of biology (a little knowledge is a dangerous thing). Your professor has requested that you tutor this student. You note that in each case there are several ...
Monday, October 15, 2012 at 12:01pm

Biology
true
Monday, October 15, 2012 at 9:40am

Biology
How does long term survival of a species depend on resources that may be limited from time to time?
Monday, October 15, 2012 at 9:32am

Biology!!!!!
7)State whether the following sentences are true or false. Rewrite them if they are false. a) Every chemical reaction taking place in cells is regulated by a specific enzyme. b) Enzymes work inside cells only. c) Enzymes are carbohydates d) An active site is the part of the ...
Sunday, October 14, 2012 at 3:07am

biology
what is the relationship between interactions and interdependence
Saturday, October 13, 2012 at 2:33pm

biology project
http://www.google.com/webhp?source=searc​h_app#hl=en&output=search&sclient=psy-ab​&q=biology+project+ideas&oq=biology+pro&​gs_l=hp.1.1.0l4.1417.5331.0.8875.11.11.0​.0.0.0.129.1093.7j4.11.0.les%3Bcqn%2Ccco​nf%3D1-2%2Cmin_length%3D2%2Crate_low%3D0&#...
Saturday, October 13, 2012 at 11:03am

biology project
i want a topic for investigatory project of biology...
Saturday, October 13, 2012 at 10:58am

Physics
I have taught this in physiology, but never physics. Is your teacher a biology teacher? correct, but really brief. Depending on your need, you can do better. http://en.wikipedia.org/wiki/Cochlea
Thursday, October 11, 2012 at 4:51pm

Biology
A bacterium that synthesizes an enzyme that neutralizes an environment toxin would probably use a(n) _____________ operon to regulate production of the enzyme.
Tuesday, October 9, 2012 at 5:29pm

biology
what does gypsy moth do when faced with danger
Tuesday, October 9, 2012 at 5:04pm

practical biology
What area interests you? Apparently the choice is wide open, not limited to just plants or animals, but it could also include humans. Do you have a biological question that might relate to yourself that you could use?
Tuesday, October 9, 2012 at 2:15pm

Biology
It includes at least those areas?
Tuesday, October 9, 2012 at 2:09pm

Finite Math
A biology quiz consists of 10 multiple -choice questions. 7 must be answered correctly to receive a passing grade. If each question has 4 possible answers, of which only one is correct, what is the probability that a student who guesses at random on each question will pass the...
Monday, October 8, 2012 at 8:15pm

Biology (PLEASE HELP)
mark off a square meter, or better, do it at five locations, then count the flowers in each area. Then take the average. For the entire field, 1) assign the counting to your stupid brother, or 2) determine the area of the field, and multiply by the population density.
Monday, October 8, 2012 at 7:27pm

Bachelor in Science
Bachelor's degrees usually take 4 to 5 years to complete. You'll probably need to decide which field of science -- geology, physics, engineering, chemistry, biology, physiology, etc. to specialize in.
Monday, October 8, 2012 at 7:06pm

Biology (PLEASE HELP)
Suppose you are studying a population of sunflowers growing in a small field. How would you determine the population density of sunflowers in a square meter of the field and in the entire field? Describe your procedure.
Monday, October 8, 2012 at 6:50pm

Biology
On your travels through eastern Canada and the United States, you notice gray squirrels everywhere. What can you infer about the squirrels' geographic range?
Monday, October 8, 2012 at 5:04pm

Biology
A group of natural populations that are reproductively isolated from other such groups and which interbreed or could interbreed with each other is called a... a. biological genus. b. natural family. c. biological species d. biological phylum.
Monday, October 8, 2012 at 1:30pm

practical biology
need a help for investigatory project i want a practical topic for this project. can anybody help me out? pls reply fast!!!
Monday, October 8, 2012 at 10:52am

BIOLOGY
BIO means "life" and LOGY means "study of", so BIOLOGY means study of living organisms.
Saturday, October 6, 2012 at 9:27pm

Biology
The purpose of studying for midterms is for the student to go back over his/her notes and assigned reading. I urge you to spend a couple of hours finding these answers. Then -- if you're still stumped on one or two of them, we may be able to help you.
Saturday, October 6, 2012 at 6:27pm

Biology
1. Creates energy in the form of ATP 2. The gel-like liquid that fills the cell 3. Sorts, packages, and sends out proteins 4. Helps the chromosomes divide faster in animal cells only 5. Creates food energy from sunlight energy 6. Responsible for digestion 7. Forms the cell'...
Saturday, October 6, 2012 at 6:24pm

Biology
okay but you still didn't answer the question...
Friday, October 5, 2012 at 11:32pm

Biology
plant cells do not have mitochrondria
Friday, October 5, 2012 at 11:13pm

Biology
A detective gathers cell evidence at a crime scene. The victim is a 37 year old man, killed by a blow to the head. Closer examination of the evidence leads the detective to conclude that firewoods was used. Which of the following kinds of evidence BEST supports his conclusion...
Friday, October 5, 2012 at 11:04pm

Science-Biology
Plants grow faster and stronger in strong light than in weak light.
Friday, October 5, 2012 at 6:05pm

Science-Biology
Plants need light in order to survive.
Friday, October 5, 2012 at 6:05pm

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