Thursday
April 17, 2014

Homework Help: Science: Biology

Recent Homework Questions About Biology

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BIOLOGY
how would i find the osmotic pressure of something from "0.9% NaCl solution and MW is 58 grams" .. ? is there a formula or some sort i am missing? if so can you tell me what that is cause i have several problems like these that i don't know how to solve
Tuesday, April 8, 2014 at 4:00pm

ap biology
Since this is not my area of expertise, I searched Google under the key words "barriers to plasmid acquisition" to get these possible sources: https://www.google.com/search?client=saf​ari&rls=en&q=barriers+to+plasmid+acquisi​tion&ie=UTF-8&oe=UTF-8 In the ...
Tuesday, April 8, 2014 at 2:48pm

ap biology
What barriers might hinder the acquisition of plasmids?
Tuesday, April 8, 2014 at 1:05pm

Biology
how would i find the osmotic pressure of something from "0.9% NaCl solution and MW is 58 grams" .. ? is there a formula or some sort i am missing? if so can you tell me what that is cause i have several problems like these that i don't know how to solve
Tuesday, April 8, 2014 at 12:41pm

Biology
Compare and contrast two classes of genes involved in regulating the cell cycle
Tuesday, April 8, 2014 at 11:31am

Biology
b
Monday, April 7, 2014 at 10:29pm

Biology
A A - good job B
Monday, April 7, 2014 at 9:49pm

Biology
Can someone please tell me if I have the right answers? Pasteur's experiments led to which theory? A. biogenesis theory B. endosymbiont theory C. evolution theory D. spontaneous generation theory I think its A or D Scientists have fossil evidence for which idea for the ...
Monday, April 7, 2014 at 9:28pm

biology
The parents' genotypes are Bw and ww. Use a punnett square. https://www.google.com/search?client=saf​ari&rls=en&q=punnett+square&ie=UTF-8&oe=​UTF-8
Monday, April 7, 2014 at 12:05pm

Biology
How do endotherms and ectotherms differ? a) Endotherms are warm-blooded and ectotherms are cold-blooded. b) Endotherms and ectotherms differ in the means by which they regulate their body temperature. c) Endotherms are regulators and ectotherms are conformers.
Monday, April 7, 2014 at 11:44am

Biology
Select the correct statement describing feedback control in animals. Select the correct statement describing feedback control in animals. a) All ectotherms are conformers with respect to temperature. b) An animal may be a regulator for one environmental variable but a ...
Monday, April 7, 2014 at 11:43am

Maths, Biology, Business Economics
Hi I want to study Psychotherapy and be a Dance therapist but cannot find any courses for Dance Therapy in South Africa.
Monday, April 7, 2014 at 8:56am

Biology please help
I have a project due tomorrow and i cant find a good place to start. Cardiacmuscle disease is a disease that is a result of the cytoskeleton not functioning properly. I cant find anything on cardiac muscle disease. THIS IS NOT CARDIOMYOPATHY
Sunday, April 6, 2014 at 9:43pm

Biology
Can someone please tell me if I have the right answers? Pasteur's experiments led to which theory? A. biogenesis theory B. endosymbiont theory C. evolution theory D. spontaneous generation theory I think its A or D Scientists have fossil evidence for which idea for the ...
Sunday, April 6, 2014 at 9:06pm

biology
*Black coat, White coat A. 1,3 B. 3,1 C.4,1 D.4,0
Sunday, April 6, 2014 at 9:53am

biology
In cat, the gene for black coat is dominant to the gene for white coat. A heterozygous black cat is crossed with a white cat. which of the following is true about the ratio of the offspring from the cross? black coat white coat A 1 3 B 3 1 C 4 1 D 4 0 can you please give me an...
Sunday, April 6, 2014 at 9:52am

mathematics
If Musa scored 75 in Biology instead of 57, his average mark in four subjects would have been 60. what was his total mark?
Saturday, April 5, 2014 at 2:30am

Biology
yujuyjy
Saturday, April 5, 2014 at 1:02am

Science/Biology
Please check my answers: 1. Which of the following correctly states the relationship between monkeys and humans? A. Humans and monkeys evolved from apes. B. Humans evolved from monkeys. C. Humans and monkeys evolved from the same ancestor, which is now extinct. D. Humans ...
Friday, April 4, 2014 at 4:40pm

CHEM ABSTRACT
Depends on the lab. High school labs should run no more than 100 words, college maybe 200 words. I could write many descriptive HS labs in 50 words. <<The body of the abstract should indicate newly observed facts and the conclusions of the experiment or argument ...
Friday, April 4, 2014 at 2:11pm

Biology
http://en.wikipedia.org/wiki/Biological_​dispersal
Thursday, April 3, 2014 at 5:16pm

Biology
What are the three types of dispersion?
Thursday, April 3, 2014 at 5:12pm

Biology
Do you mean most inclusive? If so, ecosystem.
Thursday, April 3, 2014 at 1:16pm

Biology
Which is the highest? Ecosystem population community
Thursday, April 3, 2014 at 9:41am

biology
Give the phenotype and genotype for the F2 generation of a person with Type a heterozygous blood and a type O blood type. Remember to use all possible parents. Using Punnett squares I got 50% type a blood and 50% type o blood is this right??
Wednesday, April 2, 2014 at 1:03pm

Biology
Adenine and guanine are purines. Thymine and cytosine are pyrimidines.
Tuesday, April 1, 2014 at 11:03pm

biology
b
Tuesday, April 1, 2014 at 3:07pm

biology
Since this is not my area of expertise, I searched Google under the key words "photosynthesis light dark reactions" to get these possible sources: https://www.google.com/search?client=saf​ari&rls=en&q=photosynthesis+light+dark+r​eactions&ie=UTF-8&oe=UTF-8...
Tuesday, April 1, 2014 at 2:09pm

biology
Vas deferens
Tuesday, April 1, 2014 at 1:42pm

biology
Sperm cells are moved out of the testes in the
Tuesday, April 1, 2014 at 12:50pm

Biology
The purines in DNA are A.thymine and cytosine B.thymine and guanine C.adenine and guanine D.adenine and cytosine
Tuesday, April 1, 2014 at 10:12am

biology
On a hot, summer day, what would most likely be the limiting factor, the light reaction, or the dark reaction (in terms of photosynthesis)? I don't necessarily need the question answered. Rather, I don't quite understand how limiting factors, light and dark reactions ...
Tuesday, April 1, 2014 at 1:27am

Biology
jhbjkbjbnlknkl
Tuesday, April 1, 2014 at 12:48am

Biology
I know it is a bit long and maybe difficult, please help me to answer these.. 1) I have pET28a with insert inside. Insert is 400 bp in size. I want to check my insert with both single digestion and double digestion. I already isolated my plasmid but i do not know the next ...
Monday, March 31, 2014 at 5:11pm

Physics
It's called Mike's Online Biology: MOB University. Click physics Tutoring tab -> chapter 9 -> scroll down to question #13 with video below it. I used it as a guide.
Sunday, March 30, 2014 at 10:55pm

Biology (fetal pig)
Since this is not my area of expertise, I searched Google under the key words "glottis esophagus" to get these possible sources: https://www.google.com/search?client=saf​ari&rls=en&q=glottis+esophagus&ie=UTF-8&​oe=UTF-8 In the future, you can find the ...
Saturday, March 29, 2014 at 11:40am

Biology (fetal pig)
What substance passes through the glottis? [Is it Air??] What substances passes through the esophagus? [I don't know if this is food] please help. thanks
Friday, March 28, 2014 at 10:11pm

Science
Describe how the structure of DNA is correlated with its role as the molecular basis of inheritance in Biology.
Friday, March 28, 2014 at 12:32pm

AP Biology
DOES ANYONE HERE ACTUALLY ANSWER A QUESTION -___________- Production of Protein: Protein Synthesis 1. transcription (could image as to photocopy a page named RNA of a book called DNA) 2. translation (read page named RNA and turn it into protein) Transcription: Creation of ...
Thursday, March 27, 2014 at 8:09pm

Biology
It's B
Thursday, March 27, 2014 at 12:43am

Biology
Why does an increase in light intensity cause the rate of photosynthesis to increase?
Wednesday, March 26, 2014 at 2:46pm

biology - genetics
is the cis-regulatory sequence found in the exome?
Wednesday, March 26, 2014 at 2:01am

biology - genetics
how do you compare the reversibility of point mutations and microsatellites? I thought point mutations could reverse but microsatellites can't but idk the reason.
Tuesday, March 25, 2014 at 2:28pm

Biology
Not too sure
Tuesday, March 25, 2014 at 1:48pm

Biology
How does diving bradycardia reflex help explain why we can survive after falling into cold water and being submerged for long periods of time? Give a physiological reason that explains the relationship between lung size and body size. From a physiological perspective, why is ...
Monday, March 24, 2014 at 11:17am

Biology
yeah it's the skin only
Sunday, March 23, 2014 at 7:49am

Biology
The integumentary system includes • skin only** • hair only • nails only • skin, hair, and nails Is my answer correct? the **
Saturday, March 22, 2014 at 11:09pm

Biology
Read the DNA sequence given below in the 3' to 5' direction and please tell me all of the potential start codons (i.e. every time you see the DNA version of a start codon, even if it does not immediately come after a promoter). 3'-TTCCGTAACTTCGGCGCATCTAGCTTGAGCTCC...
Saturday, March 22, 2014 at 9:47pm

Biology
What 3' to 5' DNA sequence would correspond to a 5'-AUG-3' start codon?
Saturday, March 22, 2014 at 9:18pm

Biology
(This question ties into the previous question I posted about mRNA). Use the Universal triplet code to determine the sequence of amino acids that would be generated for each of the mRNA sequences that you generated in question 2. Remember that the reading of mRNA goes in the 5...
Saturday, March 22, 2014 at 9:17pm

Biology
Does it matter which strand is the 'code strand'? The following two sequences look identical, except one runs 3'-5' and the other 5'-3'. For each DNA sequence given below, write the mRNA sequence that would be coded from it. Make sure you indicate the ...
Saturday, March 22, 2014 at 9:05pm

Biology
For the DNA sequence given below, write the complementary DNA sequence that would compliment the double-strand DNA 3'--ATTGCTTACTTGCATGGTACCTCTAGCGTTTA​GGC--5'
Saturday, March 22, 2014 at 9:02pm

BIOLOGY
Which of the following statements is NOT true about gamete formation in mammals? a)In the female, the separation of cytoplasm is unequal during meiosis. b)Only one of the four cells resulting from meiosis goes on to become an oocyte. c)Only one of the four cells resulting ...
Saturday, March 22, 2014 at 2:04pm

human biology cardiology
The the right atrium lets blood flow to the right ventricle, which receives oxygen-poor blood. This blood goes to the lungs to get more oxygen. If the blood flows to the left atrium, the blood is not getting the oxygen it needs.
Saturday, March 22, 2014 at 1:23pm

human biology cardiology
A flow of blood directly from the right atrium to left atrium is a dangerous complication of certain heart abnormalities. It can lead to cyanosis. What do you know about the flow of blood through the heart and lungs that would explain this? Yes, I do know what cyanosis means. ...
Saturday, March 22, 2014 at 1:15pm

biology
"These structures are sometimes described as "cellular power plants" because they generate most of the cell's supply of adenosine triphosphate (ATP), used as a source of chemical energy.[2] In addition to supplying cellular energy, mitochondria are involved ...
Friday, March 21, 2014 at 11:00pm

Biology
b
Friday, March 21, 2014 at 9:05pm

biology
I need help with what is happening inside the mitochondria. may help me what's happening 0-50 secondes. h t t p: // w w w.y o u t u b e.c o m / watch ?v=RrS2uROUjK4
Friday, March 21, 2014 at 8:35pm

Biology
What is a mutation? a mutation is a change of a nucleotide sequence (AGTGCCATAA etc.) of the genome of an organism. How does this change the information in a DNA molecule? It changed the order of the nucleotide sequence. I.e. if you had a CTG sequence that codes for a protein ...
Friday, March 21, 2014 at 8:15pm

Biology
Exogenous treatment with the plant hormone, ABA or auxin, induces enhanced susceptibility against biotrophic pathogens. Design an experiment that can reveal whether these hormones use the same signalling pathway or independent pathways to induce susceptibility.
Friday, March 21, 2014 at 2:46pm

Biology
oil spills and leaks in the pacific ocean have harmed marine organisms and the environment. which kind of environmental issue is illustrated by this example? a) Resource Use b) Pollution c) Population Growth d) Biodiversity
Friday, March 21, 2014 at 2:46pm

More like Biology
Be sure to use http://www.google.com to look up terms and phrases in your assignment.
Friday, March 21, 2014 at 12:10pm

Biology
http://kidshealth.org/kid/htbw/kidneys.h​tml
Thursday, March 20, 2014 at 4:49pm

Biology
How do the kidneys clean the blood? (1 point) • Kidneys clean the blood by breaking down nutrients. • Kidneys clean the blood by filtering it to remove wastes. • Kidneys clean the blood by absorbing nutrients. • Kidneys clean the blood by destroying ...
Thursday, March 20, 2014 at 3:51pm

Biology- Please Check
Crossing over (genetic recombination) and independent assortment result in A.) genetic variation in the gametes B.) four identical gametes C.) two diploid cells D.) a very large number of mutations
Thursday, March 20, 2014 at 2:52pm

Biology- Please Help
Crossing over (genetic recombination) and independent assortment result in A.) genetic variation in the gametes B.) four identical gametes C.) two diploid cells D.) a very large number of mutations
Thursday, March 20, 2014 at 12:49pm

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/
Thursday, March 20, 2014 at 8:55am

biology
Can you give me a long list of smelly animals
Thursday, March 20, 2014 at 12:54am

College Math
74 are taking something 36+52 = 88, so 14 are taking both. So, 22 are taking biology only 22/200 = .11 is P(biology only)
Wednesday, March 19, 2014 at 4:35pm

College Math
In a group of 200 high school students, 36 are taking biology, 52 are taking Spanish, and 126 are taking neither biology nor Spanish. If one of these 200 students is to be chosen at random, what is the probability that the student chosen is taking biology but not Spanish?
Wednesday, March 19, 2014 at 2:49pm

biology
Yes, a flow chart would work.
Wednesday, March 19, 2014 at 2:31pm

biology
hi ms sue its me Anthony
Wednesday, March 19, 2014 at 2:28pm

biology
that isn't an option, but would flowchart be kind of close to a circle graph?
Wednesday, March 19, 2014 at 2:25pm

biology
http://www.google.com/webhp?source=searc​h_app#q=checkpoints+cell+cycle These images use a circle graph.
Wednesday, March 19, 2014 at 2:22pm

biology
What graphic could you use to best show the checkpoints in the cell cycle? a. line graph b. bar graph c. flowchart d. map I'm not sure, I think it's c?
Wednesday, March 19, 2014 at 2:16pm

biology
In chickens, males have two Z sex chromosomes (ZZ) and females have one Z and one W sex chromosome (ZW). The mechanism for inheritance of the sex chromosomes is exactly the same as for X and Y sex chromosomes in other species. In chickens the character of ‘barred’ or...
Wednesday, March 19, 2014 at 10:14am

Biology
A poultry farmer hopes to profit from the current craze for keeping egg laying chickens as pets and wishes to increase his stock of interesting and unusual breeds. (a) The farmer crossed a pure-breeding white chicken with a pure-breeding black chicken and found that 100% of ...
Wednesday, March 19, 2014 at 10:09am

Biology
http://www.google.com/search?q=portal+sy​stems+in+the+human+body.&tbm=isch&tbo=u&​source=univ&sa=X&ei=ed0oU9GTDseGyAGKi4Ho​DQ&ved=0CDgQsAQ&biw=1517&bih=714&dpr=0.9​
Tuesday, March 18, 2014 at 7:59pm

Biology
Briefly describe a portal system and give the location of two portal systems in the human body.
Tuesday, March 18, 2014 at 7:55pm

biology - dna
its a. I checked
Tuesday, March 18, 2014 at 12:58pm

biology
a
Tuesday, March 18, 2014 at 8:17am

Biology
I'm sorry I made a mistake. Under "questions I have to answer" for question 2 the correction is... 2. What is being explored between treatments one and three.
Monday, March 17, 2014 at 11:37am

Biology
My AP Biology class is exploring alpha amylase production in germinating barley seeds. There are three treatments the seeds, or more specifically the half-grains, are put in. 1) half grains with no embryo and no GA 2) half grains with an embryo present 3) half grains with no ...
Monday, March 17, 2014 at 11:26am

Biology
Since this is not my area of expertise, I searched Google under the key words "mutation DNA" to get these possible sources: https://www.google.com/search?client=saf​ari&rls=en&q=mutation+DNA&ie=UTF-8&oe=UT​F-8 In the future, you can find the information ...
Sunday, March 16, 2014 at 8:03pm

Biology
B https://www.google.com/search?client=saf​ari&rls=en&q=water+to+steam&ie=UTF-8&oe=​UTF-8 In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
Sunday, March 16, 2014 at 8:01pm

Biology help please!
opinion on an hypothesis? Is this being taught by a science teacher? We only get into trouble when we start to espouse opinions on hypothesis... Think: what do wolves do? Second, if wolves were removed, what then would the limits on deer population be? Food? Water? What would ...
Sunday, March 16, 2014 at 4:53pm

Biology help please!
What is your opinion of the balance of nature hypothesis? Would the deer on the island be better off, worse off, or about the same without the wolves. Defend your position.
Sunday, March 16, 2014 at 3:36pm

Biology
When a teapot boils, we see a white cloud rising from the spout. The white cloud is composed of: A. water in the liquid phase B. water in the gaseous phase c. water molecules coming apart to from H+ and OH- ions D. H+ and OH- ions coming together to form water molecules. Explain!
Sunday, March 16, 2014 at 1:32pm

Biology
What is a mutation? How does this change the information in a DNA molecule?
Sunday, March 16, 2014 at 1:31pm

Science
I disagree. http://science.howstuffworks.com/life/bi​ology-fields/cave-biology3.htm
Saturday, March 15, 2014 at 1:06pm

Absorption spectra of pigments
On the graph light absorption in % vs wavelength, how come the color of chlorophyll is green? Since this is an absorption spectra, isn't it supposed to absorb blue and red and not green? Rather, it reflects green??? How would the graph be different if it is a reflection ...
Friday, March 14, 2014 at 3:00pm

AP Biology
The one-pod condition (P) is dominant to the three pod condition (p). Normal leaf (L) is dominant to wrinkled leaf(l). Determine the genotypes for the two parents for all possible matings producing the following: 150 one pod normal, 147 one pod wrinkled, 51 three pod normal, ...
Friday, March 14, 2014 at 1:58pm

Biology
Basic structural unit of a DNA molecule is called a nucleotide. Basics structural unit an of RNA molecule is also a nucleotide. Basic structural unit of a polypeptide is called an amino acid. DNA is translated into RNA which is transcribed into amino acids, which then link ...
Friday, March 14, 2014 at 1:50pm

Biology
What is the basic unit of information in a DNA molecule? In an RNA molecule? In a polypeptide?
Friday, March 14, 2014 at 12:47pm

scince biology
revalation ore u stupid
Friday, March 14, 2014 at 12:25pm

biology please help
whiich of these fit together A. lipase B. nuclease C. pancreatic amylase D. pepsin bread crumb stuffing butter mashed potatoes turkey
Thursday, March 13, 2014 at 3:39pm

Biology
Right
Thursday, March 13, 2014 at 10:11am

Biology
Are my answers correct? 1. What term describes the relationship of the ankle to the hip? Medial Proximal Distal this one Superior Anterior 2. What term describes the relationship of the nose to the mouth? Superior- this one Deep Anterior Inferior Superficial
Wednesday, March 12, 2014 at 11:23pm

biology
thank you!!
Wednesday, March 12, 2014 at 8:17pm

human biology need help
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your later post.
Wednesday, March 12, 2014 at 1:17pm

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