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November 29, 2014

Homework Help: Science: Biology

Recent Homework Questions About Biology

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Science/Biology
True or False. The volume of the lungs is the most important factor in determining their efficiency.
Tuesday, December 11, 2012 at 8:21pm

biology
1. Cystic Fibrosis is due to abnormal mucus-secreting tissue. Abnormal pancreatic secretions and respiratory problems will occur. This is an autosomal recessive disease. The mother and father are carriers for the disease. A. What is their genotype? B. What is their phenotype? ...
Monday, December 10, 2012 at 10:50pm

biology
find an instance of an ecological “mess” that has taken place in your city/county/region. Outline the history of the problem – what caused it? What is being done to resolve the problem? Suppose that you had been in charge of the situation. What might you have ...
Monday, December 10, 2012 at 12:29am

biology
Stem cells may open the door to discoveries about many diseases and may allow treatments for diseases to be developed. However many ethical issues surround stem cell research which need to be addressed by scientists, governments, etc. a. Explain why scientists would want to ...
Sunday, December 9, 2012 at 11:19pm

college biology
if you have a father who is type A heterozygote blood and married to a woman who is type B heterozygote blood, find all the children's possible blood types and ratios.
Sunday, December 9, 2012 at 8:15pm

Biology
The half-life of Carbon-14 is 5730 years. What is the age of a fossil containing 1/16 the amount of Carbon-14 of living organisms? Explain your calculation.
Sunday, December 9, 2012 at 5:45pm

Cell Biology
1. Which molecule is the major contributor to the increase in mass observed in a full grown plant (i.e. tree) compared to a plant seed? I'm thinking it could be either of these three: D-glucose, C02, or H20.. help?
Saturday, December 8, 2012 at 12:15am

Biology help please
For which of the following organisms would you expect the DNA sequence to be least similar to the housefly’s? A)butterfly B)grasshopper C)monkey D)beetle im pretty sure its monkey but if someone else from connections could verify or help me out that would be great. or ...
Friday, December 7, 2012 at 2:53pm

Biology
For questions 1 and 2 use the table in Figure 12-3 to help you answer the question. Nitrogenous Bases Figure 12-3 1. The table in Figure 12-3 shows the results of measuring the percentages of the four bases in the DNA of several different organisms. Some of the values are ...
Thursday, December 6, 2012 at 6:12pm

Biology
Why are alveoli so numerous (why not just a single large air sac for gas exchange)?
Tuesday, December 4, 2012 at 3:17pm

Biology
Hemoglobin is physiologically designed to deliver more Oxygen to exercising tissues than to resting tissues. Discuss three pieces of evidence that support this argument.
Tuesday, December 4, 2012 at 3:05pm

Biology
Hi there, Internal membranes play important roles in protein production and processing except they do NOT a. anchor ribosomes in place. b. transport substances. c. contain the hereditary information for the protein. d. modify proteins to go into vesicles. Is it C?
Tuesday, December 4, 2012 at 11:34am

biology
Why is fermentation an important process for some organisms?
Monday, December 3, 2012 at 9:44am

biology
would you expect whitefish embryo cells to divide indefinitely?
Saturday, December 1, 2012 at 10:26pm

biology
why would a One serving of particular food that contains 16 g of carbohydrates, 2 g of proteins, and 10 g of fats hav 300 calories?
Thursday, November 29, 2012 at 9:36pm

BIOLOGY
An animal has the genotype Cc for a particular trait. If, through meiosis, a certain female produces 100 eggs, how many of these eggs would have the C gene? & PLEASE HELP &
Monday, November 26, 2012 at 9:37pm

BIOLOGY
An animal has the genotype Cc for a particular trait. If, through meiosis, a certain female produces 100 eggs, how many of these eggs would have the C gene?
Monday, November 26, 2012 at 9:05pm

biology
the molecular weight of the protein is about 45 kilodaltons, and the molecular weight of glucose is about 180 daltons. jHow can you estimate the number of molecules of glucose in the 5% solution compared to the number of albumin molecules in its 5% solution?
Monday, November 26, 2012 at 5:03pm

Biology
Should companies that market high-solute beverages be able to say these drinks quench your thirst?
Monday, November 26, 2012 at 9:35am

Biology
What other factors can contribute to the rising in temperatures besides global warming?
Friday, November 23, 2012 at 2:13pm

Biology
What role does the environment play in convergent evolution?
Tuesday, November 20, 2012 at 6:56pm

Cell Biology
How many molecules of ATP will be synthesized by the complete oxidation of one molecule of fructose 1, 6-bisphosphate to carbon dioxide and water by a liver cell? Show your work.
Monday, November 19, 2012 at 12:55am

Biology
Describe the changes you'll see (evolution wise) if you were granted 1 million years of life.
Saturday, November 17, 2012 at 8:48pm

Biology
Describe the changes you'll see (evolution wise) if you were granted 1 million years of life.
Saturday, November 17, 2012 at 8:21pm

biology
explain how single celled organisms that live in freshwater adapted to living in a hypotonic environment
Thursday, November 15, 2012 at 4:23pm

biology
define natural selection
Wednesday, November 14, 2012 at 7:31pm

Biology
How do connective tissue cells differ from nerve cells
Wednesday, November 14, 2012 at 6:06pm

Re: Plant biology
I'm doing a writing assignment on plant stress physiology. The stress that I chose to research was heat stress. One of the things that I have to do is describe at least 3 experiments that I plan to perform (hypothetically speaking, of course). At least one experiment ...
Wednesday, November 14, 2012 at 12:31pm

biology
9. A certain radar installation transmits electromagnetic radiation with a wavelength of 2.5 cm. What is the frequency of this radiation? 10. For the radar in #9 above, how many seconds will it take for a signal to reach an airplane 15 km away, and return to the radar ...
Wednesday, November 14, 2012 at 12:11am

biology
i need help with my genisis essay and it cant involve religion
Tuesday, November 13, 2012 at 6:48pm

biology
• What is the overall goal of photosynthesis
Monday, November 12, 2012 at 5:34pm

Biology
I need to make a cell membrane model out of a tissue box. Can you help me? I need ideas and more information about it.
Monday, November 12, 2012 at 3:19pm

biology
communication between cells,tissues and organs. IN What Blood component? What is the mode action? Can someone help me please?
Monday, November 12, 2012 at 2:30pm

Biology
Can you give me an order from 1 to 3 for the following materials, 1 being the best insulator and 3 being the poorest? styrofoam, plastic, aluminum
Monday, November 12, 2012 at 6:10am

Biology
hi! so I have to make an experiment on heat loss & insulation and so, I did an experiment on which material insulates best against the wind of a fan--styrofoam, plastic or aluminum can. each has hot water in it but the styrofoam took the longest for the hot water to cool ...
Monday, November 12, 2012 at 5:59am

biology
Communication between cells,tissues and organs.What Blood component?And mode action? Can someone help me please?
Monday, November 12, 2012 at 2:06am

plant biology
I'm doing a writing assignment on plant stress physiology. The stress that I chose to research was heat stress. One of the things that I have to do is describe at least 3 experiments that I plan to perform (hypothetically speaking, of course). At least one experiment ...
Sunday, November 11, 2012 at 6:13pm

biology
Identify the blood types arising from each of the progenitor cell types: a)Myeloid progenitor cells b)Lymphoid progenitor cells No one has answered this question yet.
Saturday, November 10, 2012 at 9:34pm

biology
Calculate the density of a solid cube that measures 5.18 cm on each side and has a mass of 197 g. Answer in units of g/cm3
Saturday, November 10, 2012 at 8:28pm

Biology! pleaseee helppp
About 70% of the human population can taste the bitter chemical phenylthiocarbamide (PTC), which is found in foods like broccoli. The allele, T, for tasting PTC is dominant over the allele, t, for not tasting it. Calculate the allele frequencies using the Hardy-Weinberg ...
Saturday, November 10, 2012 at 12:33pm

biology
What is the role of channel proteins in facilitated diffusion?
Saturday, November 10, 2012 at 7:15am

Biology 100
1. What did you observe for the carrying capacity of each species?
Friday, November 9, 2012 at 10:09am

Biology
hi! so for science we have to make an experiment on temperature. we have to base our experiment on the given materials (which include test tubes, aluminum foil, cotton, fan) i chose a fan and I'm thinking of doing an experiment on how the strength of wind affects body ...
Friday, November 9, 2012 at 8:50am

biology
provide information the muscles found within the forearm and hand
Thursday, November 8, 2012 at 4:50pm

Biology
Bacteroides and Escherichia are both gram-negative rods found in the large intestine. Why are they in different phyla?
Wednesday, November 7, 2012 at 11:23pm

Algebra/Biology
y=2.12x + 0.004 and Protein A treated w/Bradford Reagent and has an A595 of 0.53. Can you please explain how to calculate this problem so I know in the future? Thanks for your help.
Tuesday, November 6, 2012 at 8:19pm

biology
Assume that a mature female vegetarian consumed 2 pounds of food daily for one year. At the end of this one year, she weighed ½ pound more than she weighed at the beginning of that year. a. What was the percentage of biomass conversion at this trophic level? (hint: ...
Tuesday, November 6, 2012 at 4:55pm

biology
What is the different between tissue-specific knockout mouse and an inducible knockout mouse
Tuesday, November 6, 2012 at 8:42am

biology
What is the different between tissue-specific knockout mouse and an inducible knockout mouse
Tuesday, November 6, 2012 at 3:51am

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
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
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
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
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/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
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

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

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

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

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

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

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