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Homework Help: Science: Biology

Recent Homework Questions About Biology

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.

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?

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 ...

Biology
Why are alveoli so numerous (why not just a single large air sac for gas exchange)?

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.

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?

biology
Why is fermentation an important process for some organisms?

biology
would you expect whitefish embryo cells to divide indefinitely?

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?

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 &

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?

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?

Biology
Should companies that market high-solute beverages be able to say these drinks quench your thirst?

Biology
What other factors can contribute to the rising in temperatures besides global warming?

Biology
What role does the environment play in convergent evolution?

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.

Biology
Describe the changes you'll see (evolution wise) if you were granted 1 million years of life.

Biology
Describe the changes you'll see (evolution wise) if you were granted 1 million years of life.

biology
explain how single celled organisms that live in freshwater adapted to living in a hypotonic environment

biology
define natural selection

Biology
How do connective tissue cells differ from nerve cells

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 should be...

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 ...

biology
i need help with my genisis essay and it cant involve religion

biology
• What is the overall goal of photosynthesis

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.

biology
communication between cells,tissues and organs. IN What Blood component? What is the mode action? Can someone help me please?

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

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 ...

biology
Communication between cells,tissues and organs.What Blood component?And mode action? Can someone help me please?

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 should be...

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.

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

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 ...

biology
What is the role of channel proteins in facilitated diffusion?

Biology 100
1. What did you observe for the carrying capacity of each species?

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 ...

biology
provide information the muscles found within the forearm and hand

Biology
Bacteroides and Escherichia are both gram-negative rods found in the large intestine. Why are they in different phyla?

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.

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: first, ...

biology
What is the different between tissue-specific knockout mouse and an inducible knockout mouse

biology
What is the different between tissue-specific knockout mouse and an inducible knockout mouse

biology
What is a tissue-specific knockout mouse and an inducible knockout mouse?

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.

biology
purpose of the special sense organs

Conservation Biology
What is the population total at one hundred years if you begin with two animals and they reproduce at 25% annually?

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 ...

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

biology
what is the function of pancreas

biology
what is the function of adrenel glands

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 ...

personal statement
this is my personal statement. please 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 ...

Biology
Name of banana's stem,flower

biology
what is the function of the diaphragm?

biology
how does the bladder act in elimination?

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?

biology
what are the different parts that comprise the musculoskeletal system

biology
what is included in the special sense organs

biology
Choose the total number of each item requested below. 4C6H12O6 Carbon atoms Hydrogen atoms Oxygen atoms Molecules

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 ...

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

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

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 ...

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 molecule is...

Biology
WHY WOULD PLANT CELLS HAVE 1 LARGE CENTRAL VACUOLE AND NOT SEVERAL SMALL ONES LIKE IN AN ANIMAL CELL?

Biology
WHY WOULD PLANT CELLS HAVE 1 LARGE CENTRAL VACUOLE AND NOT SEVERAL SMALL ONES LIKE IN AN ANIMAL CELL?

Biology
HOW DOES A CELL WALL HELP WITH “TURGOR PRESSURE?”

Biology
WHAT CELL PART AIDS IN MOVEMENT AND INCREASES THE SURFACE AREA?

Biology
WHAT ORGANELLE WILL BE USED DURING CELLULAR REPRODUCTION TO HELP ANCHOR THE SPINDLE FIBERS?

Biology
WHAT ORGANELLE AIDS IN TRANSPORTING SUBSTANCES?

Biology
WHAT ORGANELLE IN THE ANIMAL CELL AIDS IN DIGESTING OLDER CELL PARTS AND WASTES?

Biology
WHERE IN AN ANIMAL CELL IS WATER STORED?

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 interested...

Biology
Explain why the pH scale stretches between the numbers 0 to 14.

12th science (mathbio) biology
Two plants biological information

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?

Biology
How do variations arise during meiosis?

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?

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?

biology
what effect would the absense of carbohydrates have on an animal cell membrane?

biology question??
explain how Eukaryotic cells are attached to eachother? why is it important??

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?

biology, test tom!
how is plants doing sesxual and asexual an adaptation?

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 ...

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+.

Biology
Describe the process of gastrulation in the sea urchin – what molecular and cellular changes are needed to drive the movements that one observes?

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.

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 ...

Biology
How does long term survival of a species depend on resources that may be limited from time to time?

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 ...

biology
what is the relationship between interactions and interdependence

biology project
i want a topic for investigatory project of biology...

Biology
A bacterium that synthesizes an enzyme that neutralizes an environment toxin would probably use a(n) _____________ operon to regulate production of the enzyme.

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...

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.

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?

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.

practical biology
need a help for investigatory project i want a practical topic for this project. can anybody help me out? pls reply fast!!!

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's ...

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Homework Help: Science

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