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April 16, 2014

Homework Help: Science: Biology

Recent Homework Questions About Biology

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biology
Consider the pedigree below. This pedigree represents a family with a rare genetic disease. Note two very important assumptions: Individuals who marry into the family may carry a disease allele. The disease is completelely penetrant. That is, any individual with a genotype ...
Sunday, April 7, 2013 at 9:00am

biology - environmental
How does the edge (shoreline) of a marsh/wetland affect the wetland? Would it be better for the wetland to have a round or broken shoreline? Are coves, peninsulas and islands important to have? How does the shape affect wave action and exposure to wind?
Saturday, April 6, 2013 at 8:21pm

biology
90% if the released energy during the Krebs Cycle comes from what
Saturday, April 6, 2013 at 4:20pm

Biology
http://www.google.com/search?client=safa​ri&rls=en&q=punnett+square&ie=UTF-8&oe=U​TF-8
Saturday, April 6, 2013 at 3:16pm

Biology
a mother carried the sex-linked gene for color blindness and the father had normal color vision, what would be the probability of having a colorblind son? *using a Punnett Square
Saturday, April 6, 2013 at 1:26am

Biology
Since Jiskha doesn't have a biology expert at this time, please try posting your question at this site. http://www.biology-online.org/biology-fo​rum/
Friday, April 5, 2013 at 11:25am

Biology
Since Jiskha doesn't have a biology expert at this time, please try posting your question at this site. http://www.biology-online.org/biology-fo​rum/
Friday, April 5, 2013 at 11:22am

Biology
What are some of the treatments for coronary artery disease?
Friday, April 5, 2013 at 11:07am

Biology
Matching a donor's blood and a patient's blood is critical in transfusions. If someone with type A+ blood receives type AB+, he may have a severe hemolytic reaction. This can destroy many of his red cells and quickly kill him. While blood-typing and cross matching are ...
Friday, April 5, 2013 at 11:06am

Biology
Explain what happens when a person with AB+ donates blood to a patient with A+ blood type?
Friday, April 5, 2013 at 10:58am

Biology
Explain the role of white blood cells in the body's defense against foreign substances.
Friday, April 5, 2013 at 10:50am

Biology - URGENT Enzyme Lab
Did a catalase producing hydrogen peroxide lab, used manganese dioxide, fresh frozen liver, potato, ice, fine clean sand, etc. Basically just added hydrogen peroxide to the catalysts under diff conditions and stuff. Just dont get this question which is : how do you account for...
Friday, April 5, 2013 at 1:25am

maths literacy,biology,tourism,business studies
Most jobs require maths literacy. Tourism and business studies are needed for tour guides, motel managers, and other tourist related jobs. See Related Questions below.
Thursday, April 4, 2013 at 1:16pm

maths literacy,biology,tourism,business studies
what possible careers could i get into with these subjects
Thursday, April 4, 2013 at 1:02pm

Biology
I'm doing a lab for gel electrophoresis and we added the digests in the wells of the agarose gel Lane 2 – λ Hind III (a standard) Lane 4 – Tube 1 Lane 5 – Tube 2 Lane 6 – Tube 3 Lane 7 – Tube 4 Now will DNA in tube 1 which only has dh20, 10x ...
Tuesday, April 2, 2013 at 2:11pm

Biology
0.5
Tuesday, April 2, 2013 at 12:55pm

Biology
0.5
Tuesday, April 2, 2013 at 12:51pm

biology (incomplete)
What table?
Tuesday, April 2, 2013 at 12:39pm

Biology (incomplete)
You tell about individuals 1 and 2, but not 4 and 5. Who are 4 and 5? For 1 and 2, is the person with the recessive colorblindness and hemophilia male or female? If male, none of sons will be either, since they only get the Y-chromosome from him. If female, all the sons will ...
Tuesday, April 2, 2013 at 10:55am

science, biology
• So the mother is normal XX The father is color blind XiY (the i indicates that the gene is affected) To be color blind and hemophiliac a woman needs to have XiXi and a man needs XiY This is both the same for color blindness and hemophilia. A woman can also be XiX. This ...
Tuesday, April 2, 2013 at 9:56am

Biology "Genetics"
Red-green Color Blindness and Hemophilia A are both sex-linked traits in humans. Both genes are on the X-chromosome and are tightly linked. Consider the pedigree below. Individual 1 is homozygous normal. Individual 2 is both red-green color blind and a hemophiliac. Individual ...
Tuesday, April 2, 2013 at 9:39am

biology
) To test linkage between the feather texture and feather color genes you complete a test cross with the F1, and find that the feather texture and feather color genes are linked. Only part of the data from the test cross is given below. Complete the table by giving the four ...
Tuesday, April 2, 2013 at 5:51am

biology
Since this is not my area of expertise, I searched Google under the key words " chromosome movement during cell division" to get these possible sources: http://www.google.com/search?client=safa​ri&rls=en&q=chromosome+movement+during+c​ell+division&ie=UTF-...
Monday, April 1, 2013 at 12:12pm

biology
0.5
Monday, April 1, 2013 at 1:46am

biology
how do chromosomes move inside a cell during each stage of cell division?
Sunday, March 31, 2013 at 9:03pm

biology
Consider the pedigree below. Individual 1 is homozygous normal. Individual 2 is both red-green color blind and a hemophiliac. Individual 6 is the as yet unborn son of 4 and 5. What is the probability that their son, 6, will be both color blind and a hemophiliac? Express your ...
Sunday, March 31, 2013 at 5:48pm

Biology dilutions
This is the homework exercise: You want to add 0.13 ul of DNA to 4.87 ul of extraction mix to have a final total of 5.0 ul of sample. But you don't want to make 0.13 aliquots because it is too small. Make a dilution to accomodate for the small aliquot. Any help would be ...
Thursday, March 28, 2013 at 9:10am

Biology
4 regulation
Wednesday, March 27, 2013 at 8:09pm

10 grade algebra
please help with this problem Your dad is taking Biology as part of the veterinarian program at the local community college. This semester he will spend a total of 40 hours in the biology lab, and he will take notes in class 6 hours per week. Define a variable for the number ...
Wednesday, March 27, 2013 at 7:06pm

Biology (dilutions)
This is the homework exercise: You want to add 0.13 ul of DNA to 4.87 ul of extraction mix to have a final total of 5.0 ul of sample. But you don't want to make 0.13 aliquots because it is too small. Make a dilution to accomodate for the small aliquot. Any help would be ...
Wednesday, March 27, 2013 at 3:37pm

Biology
This is the homework exercise: You want to add 0.13 ul of DNA to 4.87 ul of extraction mix to have a final total of 5.0 ul of sample. But you don't want to make 0.13 aliquots because it is too small. Make a dilution to accomodate for the small aliquot. Any help would be ...
Wednesday, March 27, 2013 at 10:01am

algebra 10th grade
please help with this problem Your dad is taking Biology as part of the veterinarian program at the local community college. This semester he will spend a total of 40 hours in the biology lab, and he will take notes in class 6 hours per week. Define a variable for the number ...
Tuesday, March 26, 2013 at 8:41pm

BIOLOGY
The forward primer was provided by the manufacturer as a lyophilized powder. If the manufacturer delivers 127.4 nmoles of this primer, what volume of buffer should you dissolve it in to make a 100 μM stock?
Tuesday, March 26, 2013 at 6:06pm

Biology
Use a Punnett Square. http://anthro.palomar.edu/mendel/mendel_​2.htm
Tuesday, March 26, 2013 at 2:38pm

Maths literacy,business,acounting,biology
what can i study?
Tuesday, March 26, 2013 at 4:41am

biology
SI units
Tuesday, March 26, 2013 at 12:12am

Biology { PLEASE HELP :D }
From an ATP production viewpoint, use fact B to make a statement regarding the efficiency of fats vs. carbs. Fact b - Carbs bind and store water. The metabolism of water yields no ATP. Fat has no water bound to it.
Monday, March 25, 2013 at 8:22pm

Biology
The original high estimate of the number of protein-coding genes in humans was based partly on the number of different known proteins made by the human organism. How can the small number of genes now thought to be present account for this larger number of proteins synthesized ...
Monday, March 25, 2013 at 5:52pm

Biology
Stem height in the pea plant is one of the traits studied by Mendel. The tall allele is dominant to the short stem allele. What is the probability of a tall offspring if two heterozygous plants are mated? What proportion of the tall offspring is likely to be homozygous?
Monday, March 25, 2013 at 5:51pm

ap biology
Necleus
Monday, March 25, 2013 at 2:54pm

biology
How could individual cells continue to reproduce themselves without DNA? Body cells are constantly dying and reproducing.
Monday, March 25, 2013 at 2:42pm

Biology/Genetics
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Since this is not my area of expertise, I searched Google under the key words "meiosis stages" to get these possible sources: http...
Monday, March 25, 2013 at 1:28pm

MATHS
Hard to say. All we know is that if c students pass chemistry only, and x pass both, c + (c+6) + x = 60 2c = 54-x c = 27-x and x>0, so c<27 So, we could have 26 pass chemistry only, 32 pass biology only, 2 pass both all the way down to 0 pass chemistry only, 6 pass ...
Monday, March 25, 2013 at 10:35am

MATHS
in a class of 60 students,the number of students who pass biology is 6 more than the number who pass chemistry.every student passed at least one of the two subject.how many pass in only biology.how many pass in only chemistry.
Monday, March 25, 2013 at 3:20am

AP Biology
i donno
Sunday, March 24, 2013 at 11:14pm

biology
Why humans not evolve with one central repository of DNA rather than having it replicated throughout the body?
Sunday, March 24, 2013 at 9:39pm

math
After six biology tests, Ruben has a mean score of 73. What score does Ruben need on the next test to raise his average (mean) to 75?
Sunday, March 24, 2013 at 2:32pm

Biology
Identify the molecules that participate in the light dependant reactions and tell what they do.
Sunday, March 24, 2013 at 2:31pm

biology
Devise a plan to carry out the following growth curve: Seed cells on day -1. Transfer cells to the test media on day 0. From day 0, plan to carry out your growth curve for 10 days. During this time, the cells are to be fed three times (excluding the day 0 medium change), and ...
Saturday, March 23, 2013 at 1:31pm

biology
time day 0 day 1 day 3 day 4 day 5 day 7 count blank 7 10 5 14 9 8 low 45&49 64&70 62&69 75&79 80&82 68&72 high 45&49 72&78 100&112 180&195 250&267 208&226 Calculate the cell yield for the following data that were obtained using a coulter counter. Conditions: machine counting ...
Saturday, March 23, 2013 at 1:30pm

Biology
please help ASAP!
Saturday, March 23, 2013 at 7:21am

Biology
I know Darwin went the Galapagos islands and he viewed the finches found there how their beaks were different sizes and shapes because of the seeds they ate but they were all the same species but their beaks changed because of natural selection.
Friday, March 22, 2013 at 8:35pm

Biology
Well for one captive born animals do not know how to survive in the wild, in order for reintroduction to the wild the an must know how to survive, forage for food be excepted by a family if the animal lives with others there so many difficulties.
Friday, March 22, 2013 at 7:51pm

biology
Cheater.
Friday, March 22, 2013 at 11:39am

Biology
A bone thickens by A. Activity of osteocytes in the medullary cavity B. increased secretion of calcium salts by osteoclasts C. Adding blood vessels and nerves D. None of the above
Thursday, March 21, 2013 at 8:50pm

Biology
What three things must be known to perform radiometric dating?
Thursday, March 21, 2013 at 6:02pm

Biology DNA
Phosphodiester bond which a covalent bonds between a phosphate group and two 5-carbon ring carbohydrates (pentoses) over two ester bonds
Wednesday, March 20, 2013 at 11:50pm

Biology DNA
What are the components of DNA and how is the backbone of a single strand of DNA constructed? I put the components as nitrogenous base, deoxyribose molecule, and a phosphate group...I don't know the second part of the question :/
Wednesday, March 20, 2013 at 10:37pm

Biology
You'll have to read some biographies of Darwin. Google Charles Darwin biography.
Wednesday, March 20, 2013 at 8:03pm

Biology
You'll have to read some biographies of Darwin. Google Charles Darwin biography.
Wednesday, March 20, 2013 at 7:58pm

Biology
What was a event in Darwins life that lead him to the theory of evolution. When i googled it those were the only two that came up. And our teacher told us to not to do those
Wednesday, March 20, 2013 at 7:55pm

Biology
What was a event in Darwins life that lead him to the theory of evolution. When i googled it those were the only two that came up. And our teacher told us to not to do those
Wednesday, March 20, 2013 at 7:47pm

Biology
How would you like us to help you with this assignment?
Wednesday, March 20, 2013 at 7:45pm

Biology
Research and discuss an event in Charles Darwins' life that lead to his theory of evolution. Events could be directly in Charles Darwin's life or could be individuals whose ideas Darwin incorporated into his work. Besides the voyage to Beagle and the visit to the ...
Wednesday, March 20, 2013 at 7:42pm

Biology
Since this is not my area of expertise, I searched Google under the key words "Eutrophication" to get these possible sources: http://www.google.com/search?client=safa​ri&rls=en&q=Eutrophication&ie=UTF-8&oe=U​TF-8 In the future, you can find the ...
Wednesday, March 20, 2013 at 1:09pm

Biology
which of the following statement is correct? a)multiple alleles for the same gene are always co dominant. b)when there are only two alleles of a particular gene,one alleles is always recessive to the other. c)in different indivual, the identities of dominant and recesive ...
Tuesday, March 19, 2013 at 10:38pm

Biology
What is the main cause of brown or photochemical smog? 1. emissions from aircrafts 2. aerosol cans and coolants 3. emissions from automobiles 4. coal-burning industries 5. river pollution through discharge of industrial wastes
Tuesday, March 19, 2013 at 7:07pm

Biology
Eutrophication refers to 1. the concentration of a toxic substance in the tissues of organisms. 2. depletion of mineral resources as a result of leaching. 3. the warming of the earth’s surface. 4. the damage to the ozone layer that protects the earth from UV light. 5. ...
Tuesday, March 19, 2013 at 6:24pm

Biology
Why is it difficult for a mutation to occur that would change the genetic code?
Tuesday, March 19, 2013 at 2:07pm

Biology
Where is the clitoris situated? What is transpiration? What is the function of Bertholin's Glands? What is the chemical composition of melanin? Where are the testicles situated in the human body?
Monday, March 18, 2013 at 2:32pm

Biology
To take the energy from an exergonic reaction and use it to power an endergonic reaction, a cell can: create the energy for the endergonic reaction to occur. Why is this false? I thought a exergonic reaction create energy for the endergonic reaction to occur?
Monday, March 18, 2013 at 1:13am

biology
Yes
Sunday, March 17, 2013 at 11:52am

biology
Is pore protein = channel protein?
Sunday, March 17, 2013 at 6:26am

Biology-Ecology
2: cycled between organisms and the environment The compounds must be taken in by consumption, and then recycled back through decomposition.
Sunday, March 17, 2013 at 12:39am

Biology-Ecology
Ultimate source of energy is light, which is captured by photosynthesis. Energy leaves as heat because animals give off heat.
Sunday, March 17, 2013 at 12:38am

Biology-Ecology
Multiple choice What is the ultimate source of energy for most ecosystems, and in what form does the energy leave the ecosystem? 1. plants; animals 2. light; heat 3. plants; heat 4. producers; consumers 5. heat; light
Saturday, March 16, 2013 at 9:01pm

Biology-Ecology
Multiple choice: For a natural ecosystem to be self-sustaining, many compounds must be: 1. converted into new forms of energy. 2. cycled between organisms and the environment. 3. permanently removed from the environment. 4. changed into fossil fuels such as oil and coal
Saturday, March 16, 2013 at 9:00pm

biology
Polar (may participate in hydrogen bonds): • Glutamine - Gln • Asparagine - Asn • Histidine - His • Serine - Ser • Threonine - Thr • Tyrosine - Tyr • Cysteine - Cys • Methionine - Met • Tryptophan - Trp Hydrophobic (normally buried ...
Thursday, March 14, 2013 at 8:18pm

biology
In this problem, 6 amino acids have been randomly selected from the 129 amino acids in lysozyme; they are shown as solid spheres. The remainder of the protein is shown as a cloud of tiny dots. Your task is to find out which of the 6 amino acids are on the surface of the ...
Thursday, March 14, 2013 at 6:45pm

biology
From ucmp dot Berkly dot edu, ~~~~~~~~~~~~ Hooke had discovered plant cells -- more precisely, what Hooke saw were the cell walls in cork tissue. In fact, it was Hooke who coined the term "cells": the boxlike cells of cork reminded him of the cells of a monastery. ...
Thursday, March 14, 2013 at 7:54am

biology
when robert hooke observed cork through his compound microscope , all that he could see were empty chambers. why were hooke's chambers empty
Wednesday, March 13, 2013 at 8:56pm

biology
The Dopamine molecule cannot make ionic bonds. Edit the dopamine molecule so it now can make ionic bonds.
Wednesday, March 13, 2013 at 8:54pm

biology
In rabbits, there are four different versions of gene for coat color. What pattern of inheritance is this?
Wednesday, March 13, 2013 at 7:36pm

math help please ASAP
This isn't math... probably the science people won't look at it. This looks like biology to me.
Wednesday, March 13, 2013 at 7:32pm

Biology
I just wanted to add one thing. The importance of simple sugars has to do with their role in producing ATP. Without them, our cells would have a hard time producing the energy needed to carryout energetic unfavorable reactions.
Wednesday, March 13, 2013 at 6:10pm

Biology
Humans have specific enzymes to reduce glucose, galactose, and fructose. Most infants can break lactose into glactose and glucose, as can most adults (some adults have difficulty doing this chem cellular chem reaction. If humans had the proper enzymes, they could digest ...
Wednesday, March 13, 2013 at 6:00pm

Biology
Why are simple sugars required for metabolism? What makes them so important?
Wednesday, March 13, 2013 at 4:46pm

biology
The micelle and the liposome are two structures formed by phospholipids in an aqueous environment. They are represented here in cross section. The letters A, B, C, and D represent different regions. Four different molecules are shown below. For each, indicate if it would be ...
Wednesday, March 13, 2013 at 12:58pm

biology
Caffeine is the most widely used stimulant in the world today. This naturally produced molecule is found in popular beverages from coffee to black tea to Coca Cola. Although humans use caffeine to ward off drowsiness, the caffeine produced by plants makes the leaves and seeds ...
Wednesday, March 13, 2013 at 12:56pm

biology
Which of the following bond types is Fexofenadine capable of forming with a suitable partner molecule? Indicate your answer by checking "Yes" or "No" as appropriate. Bond type Can Fexofenadine form this bond? Hydrogen Bond Ionic Bond van der Waals forces As...
Wednesday, March 13, 2013 at 12:53pm

Biology
35.49
Wednesday, March 13, 2013 at 11:51am

biology
−C−H−− −N−−−H −O−H−−
Tuesday, March 12, 2013 at 5:37pm

biology
if you want to know what it is then go to google and type in your question and there you go and remember to click on the first link to the question so thst way you can know what the correct answer is!!!!!!!!!!
Tuesday, March 12, 2013 at 5:34pm

biology
Problem 5: Functional Groups On the structure of MTX below, identify the functional groups that are present by dragging the functional group name listed below onto the appropriate target boxes on the structure.
Tuesday, March 12, 2013 at 5:29pm

biology
Given the part of the molecule shown below, can the underlined atom participate in a hydrogen bond with an approriate bonding partner? −O−−−H −C−H−− −N−−−H −O−H−− −C−&#...
Tuesday, March 12, 2013 at 3:29pm

biology
Allegra is a blockbuster allergy medication that generated over $1.8 billion in global sales in 2004. Allegra, or Fexofenadine, decreases allergy symptoms by inhibiting the action of histamines. Histamines are naturally occurring molecules that are released from some cells ...
Tuesday, March 12, 2013 at 3:15pm

biology
(A) Delete the two OH and NH2 (B) Make NH2 N+ (C) Delete the polar groups. I hope this will be help :)
Tuesday, March 12, 2013 at 9:04am

Biology
can you show the diagram if th pedegree of the fipnob family
Tuesday, March 12, 2013 at 8:55am

biology
You should Google this question. There are many difference as bobpursley has already alluded to.
Tuesday, March 12, 2013 at 5:57am

biology
different? In structure? in DNA? in energy production? This question begs for specificity.
Tuesday, March 12, 2013 at 5:51am

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