Monday
August 31, 2015

Homework Help: Science: Biology

Recent Homework Questions About Biology

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 by marie

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 by Cara

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 by Cara

biology
Communication between cells,tissues and organs.What Blood component?And mode action? Can someone help me please?
Monday, November 12, 2012 by marie

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 by Victoria

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 by jack

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 by dynesha

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 by Madi

biology
What is the role of channel proteins in facilitated diffusion?
Saturday, November 10, 2012 by Amna

Biology 100
1. What did you observe for the carrying capacity of each species?
Friday, November 9, 2012 by Anonymous

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 by Cara

biology
provide information the muscles found within the forearm and hand
Thursday, November 8, 2012 by tina

Biology
Bacteroides and Escherichia are both gram-negative rods found in the large intestine. Why are they in different phyla?
Wednesday, November 7, 2012 by Aubrey

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 by Deb

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 by ay

biology
What is the different between tissue-specific knockout mouse and an inducible knockout mouse
Tuesday, November 6, 2012 by nam

biology
What is the different between tissue-specific knockout mouse and an inducible knockout mouse
Tuesday, November 6, 2012 by nam

biology
What is a tissue-specific knockout mouse and an inducible knockout mouse?
Monday, November 5, 2012 by Poonam

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 by john

biology
purpose of the special sense organs
Sunday, November 4, 2012 by jessica

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 by Isla

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 by Sanya

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 by alisa khan

biology
what is the function of pancreas
Saturday, November 3, 2012 by jessica

biology
what is the function of adrenel glands
Saturday, November 3, 2012 by jessica

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 by Sanya

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 by help me

Biology
Name of banana's stem,flower
Thursday, November 1, 2012 by Ajai

biology
what is the function of the diaphragm?
Wednesday, October 31, 2012 by jessica

biology
how does the bladder act in elimination?
Wednesday, October 31, 2012 by jessica

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 by Amanda

biology
what are the different parts that comprise the musculoskeletal system
Tuesday, October 30, 2012 by jessica

biology
what is included in the special sense organs
Tuesday, October 30, 2012 by jessica

biology
Choose the total number of each item requested below. 4C6H12O6 Carbon atoms Hydrogen atoms Oxygen atoms Molecules
Monday, October 29, 2012 by Anonymous

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 by Debbie

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 by ashley

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 by ashley

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 by alleyx3

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 by Alex

Biology
WHY WOULD PLANT CELLS HAVE 1 LARGE CENTRAL VACUOLE AND NOT SEVERAL SMALL ONES LIKE IN AN ANIMAL CELL?
Tuesday, October 23, 2012 by Ashley

Biology
WHY WOULD PLANT CELLS HAVE 1 LARGE CENTRAL VACUOLE AND NOT SEVERAL SMALL ONES LIKE IN AN ANIMAL CELL?
Tuesday, October 23, 2012 by Ashley

Biology
HOW DOES A CELL WALL HELP WITH “TURGOR PRESSURE?”
Tuesday, October 23, 2012 by Ashley

Biology
WHAT CELL PART AIDS IN MOVEMENT AND INCREASES THE SURFACE AREA?
Tuesday, October 23, 2012 by Ashley

Biology
WHAT ORGANELLE WILL BE USED DURING CELLULAR REPRODUCTION TO HELP ANCHOR THE SPINDLE FIBERS?
Tuesday, October 23, 2012 by Ashley

Biology
WHAT ORGANELLE AIDS IN TRANSPORTING SUBSTANCES?
Tuesday, October 23, 2012 by Ashley

Biology
WHAT ORGANELLE IN THE ANIMAL CELL AIDS IN DIGESTING OLDER CELL PARTS AND WASTES?
Tuesday, October 23, 2012 by Ashley

Biology
WHERE IN AN ANIMAL CELL IS WATER STORED?
Tuesday, October 23, 2012 by Ashley

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 by Redgy22

Biology
Explain why the pH scale stretches between the numbers 0 to 14.
Friday, October 19, 2012 by Brian Ho

12th science (mathbio) biology
Two plants biological information
Thursday, October 18, 2012 by Harsha

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 by Lea

Biology
How do variations arise during meiosis?
Wednesday, October 17, 2012 by brenda Houchins

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 by brenda Houchins

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 by brenda Houchins

biology
what effect would the absense of carbohydrates have on an animal cell membrane?
Wednesday, October 17, 2012 by mandy

biology question??
explain how Eukaryotic cells are attached to eachother? why is it important??
Wednesday, October 17, 2012 by mandy

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 by Milen

biology, test tom!
how is plants doing sesxual and asexual an adaptation?
Monday, October 15, 2012 by rebekah

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 by melody

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 by melody

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 by melody

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 by melody

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 by melody

Biology
How does long term survival of a species depend on resources that may be limited from time to time?
Monday, October 15, 2012 by Fahad

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 by Nicole

biology
what is the relationship between interactions and interdependence
Saturday, October 13, 2012 by bob

biology project
i want a topic for investigatory project of biology...
Saturday, October 13, 2012 by Snehal

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 by Robert

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 by Toni

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 by NEED HELP

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 by Rayne

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 by Ameilia

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 by Snehal

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 by Aradia Megido

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 by Mary Beth

Science-Biology
why do plants grow better under certain lighting conditions than others?
Friday, October 5, 2012 by Lulu

BIOLOGY
BIOLOGY MEANS?
Thursday, October 4, 2012 by GEME

BIOLOGY
BIOLOGY MEANS?
Thursday, October 4, 2012 by GEME

Science/Biology
1. Describe a SPECIFIC EXAMPLE of how increased temperature can change cellular processes. 2. What FACTORS (can be properties of animals or the environment) determine how wide a range of temperatures a species can tolerate? Be as comprehensive as you can.
Wednesday, October 3, 2012 by Pag

biology
6. During division in cellular reproduction, the DNA and cytoplasm of the parent cell is distributed to two A. chromosomes. B. clones. C. simplified cells. [D. daughter cells.]
Wednesday, October 3, 2012 by jake

Biology
Scientists observe a newly established population of sexually reproducing plants growing on the shore of a small island. An observable trait of the plant has two possible phenotypes. It is determined by a single gene, with the dominant allele having complete dominance over the...
Wednesday, October 3, 2012 by Anne

Biology/Science
1. Describe a SPECIFIC EXAMPLE of how increased temperature can change cellular processes. 2. What FACTORS (can be properties of animals or the environment) determine how wide a range of temperatures a species can tolerate? Be as comprehensive as you can.
Tuesday, October 2, 2012 by Pag

BIOLOGY
Scientists observe a newly established population of sexually reproducing plants growing on the shore of a small island. An observable trait of the plant has two possible phenotypes. It is determined by a single gene, with the dominant allele having complete dominance over the...
Tuesday, October 2, 2012 by batmo

Biology!!!!!!!!!!!!!!!!
In preparing some blood for observation with a microscope, a student puts a drop of blood into a test tube containing 2 cm3 of water. After mixing, he examines a drop of the mixture. Explain why he cannot see any blood cells under the microscope.
Tuesday, October 2, 2012 by Nicole

Biology
How can NaHCO3 function as both the acidic component of the NaHCO3/Na2CO3 buffer system and as the basic compnent of the H2CO3/NaHCO3 buffer system?
Monday, October 1, 2012 by Jim

biology
what statement describes the 1st step of ecological community it is known as? A. reed plants attract dragonflies and mayflies. B. frogs and snakes arive after emergent plants are established. C.climax trees such as ash and beech appear and eventually dominate the area. D. ...
Monday, October 1, 2012 by tameka

biology
science has limitation because?
Monday, October 1, 2012 by tameka

math
65 men 75 women are enfolled in calculus. There are 30 business majors, 40 biology majors, 50 computer science majors, and 20 mathematics majors. No person has a double. If a single calculus student is chosen, find the probability that that the student is not a mathematics major
Friday, September 28, 2012 by greg

Biology
Which of the following statements correctly compares the functions of a plant's roots and stem? The stem contains a high percentage of cells that provide structural support, unlike the roots. The stem is the first part of the plant to emerge from a seed, followed by the ...
Friday, September 28, 2012 by Madi

Biology
1. How is both the external adn internal stimuli involved in doing this: You are hungry so you reach for an apple in a fruit bowl. 2. Why is a hypothesis important to controlled experiments? Is it becasue you are trying to explain the effect that it would have to a substance ...
Thursday, September 27, 2012 by Samantha

Human Biology
Tendon sheaths are used to?
Thursday, September 27, 2012 by Kayla

Biology
some proteins (such as HBB) can vary quite a bit from species to species. others (ex., tubulin) vary little from species to species? Why?
Thursday, September 27, 2012 by Becca

Biology
Some genes are said to be “linked”. Explain this term and the implications it has as to the inheritance of certain traits. Provide 2 (human) examples of linked genes? PLEASE HELP ITS A REQUEST
Wednesday, September 26, 2012 by jane

biology
What structure in the moss is like the spore case in ferns?
Wednesday, September 26, 2012 by Nina

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 by marina

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 by Alyssa

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 by Alyssa

Biology
How are decomposers like a city's recycling center?
Tuesday, September 25, 2012 by Alyssa

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 by batmo

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 by erica

  1. Pages:
  2. <<Prev
  3. 7
  4. 8
  5. 9
  6. 10
  7. 11
  8. 12
  9. 13
  10. 14
  11. 15
  12. 16
  13. 17
  14. 18
  15. 19
  16. 20
  17. 21
  18. Next>>

Homework Help: Science

Members