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July 24, 2014

Homework Help: Science: Biology

Recent Homework Questions About Biology

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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 at 4:52pm

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 at 1:47pm

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 at 2:50am

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 at 10:02pm

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 at 7:22pm

biology
science has limitation because?
Monday, October 1, 2012 at 7:10pm

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 at 4:44pm

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 at 3:29pm

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 at 8:45pm

Human Biology
Tendon sheaths are used to?
Thursday, September 27, 2012 at 5:42pm

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 at 11:13am

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 at 9:31pm

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
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
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!!
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
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

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

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

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

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

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
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
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
what is burgess shale? what is the significance of this discovery to evolutionary biology
Saturday, September 8, 2012 at 3:53pm

biology
Which are more closely related... Ants and Bees or Flies and Beetles... Thanks! :)
Saturday, September 8, 2012 at 11:10am

Biology
How are radioisotopes used to make biochemical reactions?
Saturday, September 8, 2012 at 10:28am

Biology
characteristics of life
Friday, September 7, 2012 at 8:05pm

biology
A water molecule is held together by two single polar covalent bonds true or false?
Thursday, September 6, 2012 at 2:24pm

College Biology help!
Is this true? Explain. To make a 100 osmolar solution of magnesium chloride, 60g of the salt are placed in a liter of water.
Wednesday, September 5, 2012 at 12:43am

Biology
Produce a self portrait showing you carrying out the characteristics of life. Could you explain what exactly is expected of me.
Tuesday, September 4, 2012 at 2:37pm

biology
what units are typically used to measure volume?
Tuesday, September 4, 2012 at 9:50am

AP Biology
Damaraland mole-rats are relatives of naked mole-rats. In their clans, too nonbreeding individuals of both sexes cooperatively assist one breeding par. Even so, breeding individuals in wild Damaraland mole-rat colonies usually are unrelated, and few suboordianes move up in the...
Monday, September 3, 2012 at 8:57pm

Biology
Down syndrome or trisomy 21, in humans is caused by an extra copy of relatively small chromosome 21. if a male with down syndrome could have children what is the likelihood that his children will also have down syndrome? a. 0 b. 25 c.50 d. 75 e. 100
Monday, September 3, 2012 at 5:57pm

Probability
4.3. In a certain college town, 27.5 percent of the students failed Mathematics (Math), 19.8 percent failed Biology (Bio), and 11 percent failed both Math and Bio. A student is selected at random. Let A represent the event of failing Math, so that A' is the probability of ...
Sunday, September 2, 2012 at 11:32pm

Biology (Science)
What is the biological definition of life?
Sunday, September 2, 2012 at 10:24pm

biology
What do u mean by floral formula?
Sunday, September 2, 2012 at 12:50am

science
how to make an acrostic for biology?
Saturday, September 1, 2012 at 11:57am

biology
Discuss the major cell and tissue types found in the typical animal body.
Saturday, September 1, 2012 at 11:30am

biology
Discuss the flowering plant body from the cell to the entire plant.
Saturday, September 1, 2012 at 11:30am

Biology
what is spontaneous generation How was it disproved
Thursday, August 30, 2012 at 12:57pm

biology
can any one help me by giving correct answer for the following question give reason:left ventricle is thicker than right ventricle.
Thursday, August 30, 2012 at 7:48am

biology
Compare isomers and sterioisomers of glucose?
Tuesday, August 28, 2012 at 9:29am

Human Biology
When you eat a salad with lettuce, croutons, hard-boiled egg, bacon bits, and salad dressing, which one of those components will pass through your body with the least digestion? Why?
Monday, August 27, 2012 at 4:08pm

biology
how did the surface area affect the diffusion of the cube?
Sunday, August 26, 2012 at 9:09pm

Biology
1. Which of the following is the definition of ecology? the social movement with a goal to protect the environment the recycling of human-made materials to reduce waste going into landfills the study of interactions among organisms and between organisms and their environment ...
Friday, August 24, 2012 at 4:06pm

biology
Suppose you plant a seed and observe that a tree of large mass grows from it. The tree achieves a final mass that changes very little for years afterward. Which of the following is true about the tree? (1 point) Both anabolic and catabolic reactions took place in the seed and ...
Friday, August 24, 2012 at 2:38pm

biology
what does the word hypothesis come from?What is the meaning?
Thursday, August 23, 2012 at 9:30pm

Biology - genetics
How does crossing over change the combination of alleles in gametes? Thanks :)
Thursday, August 23, 2012 at 3:01am

biology
What is meant by the statment living things do not exist in isolation?
Tuesday, August 21, 2012 at 9:05pm

biology
How do I convert km to nm? Like 299.32 km = nm
Sunday, August 19, 2012 at 11:29pm

biology
2. Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water.
Sunday, August 19, 2012 at 10:41pm

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