Recent Homework Questions About Biology
A distribution of 800 test scores in a biology course was approximately normally distributed with a mean of 35 and a standard deviation of 6. Calculate the proportion of scores falling between 20 and 40
Saturday, June 18, 2011 at 1:09am
Biology question about molecules? I need to arrange the following in terms of smallest to largest representative size... triglyceride, disaccharide, carbon atom, protein, carboxylic acid please help! thank you!!
Wednesday, June 15, 2011 at 8:34pm
Carbon is a an element with an atomic number of 6. Based on this information, which of the following statements is true? A. Carbon can be broken down into simpler component substances. B. Each carbon atom will always have 6 protons. C. Each carbon atom will always have 6 ...
Wednesday, June 15, 2011 at 2:44am
You are a botanist hired in the future to make a distant planet, Xyloph, habitable for human life. Your job is to help seed the planet with plant life by working with the Terraforming Team. All four major kinds of plants will be introduced into this new world. You are to help...
Sunday, June 12, 2011 at 12:07pm
I did a lab with catalase breaking down hydrogen peroxide. A question asks, what gas is being formed (oxygen), suggest a method I could use to determine this. I don't know any method?
Thursday, June 9, 2011 at 9:54pm
1. Record your observations of the roots of the bean and radish plants in the appropriate data chart. Be sure to include a sketch of each plants roots. Answer: Data Chart: Bean Plant Nodules present? Number of nodules Number of pink nodules Number of green nodules Sketch...
Wednesday, June 1, 2011 at 3:38pm
Could you please check these adjectives referring to personality? Thank you very much. 1) I'm outgoing, sensible, sincere, touchy and hard-working. 2) I'm quite confident about myself. I'm anxious about next week's biology test. 3) If I were you, I'd study ...
Wednesday, June 1, 2011 at 10:16am
I really need help with biology!!
I need help understanding my bio assignment. Can you tell me weather or not I got them right and if I didnt get them right can you correct them and tell me the right answer to give me a better understanding? I put a star (*) next to my answer. 1. Which type of muscle makes up ...
Friday, May 20, 2011 at 11:14pm
Charle Darwin made theory of natural selection but couldnt explain why there is variation within populations. Explain two reasons why there is variation within population ? PLEASE help me answer this question is for my test
Friday, May 20, 2011 at 2:39pm
Can someone help answer this question please is one of my study guide for the test? What are some adaptation that hominid populations developed as opposed to primates ? thank you
Thursday, May 19, 2011 at 6:29pm
Among protostomes, which morphological trait has shown the most variation? A. Type of symmetry (bilateral vs. radial vs. none) B. Type of body cavity (coelom vs. Pseudocoelom vs. acoelom) C. Number of embryonic tissue types (diploblastic vs. triploblastic) D. Cephalization (...
Wednesday, May 18, 2011 at 5:25pm
Name two ways in which antibodies in the blood will prevent a pathogen from making you sick. This is all I can think of: 1. An antigen in the body will bind to an antibody that was made by...
Friday, May 13, 2011 at 1:42pm
In order to produce many copies of a protein fast, the cell uses A. DNA replication. B. intron self-splicing. C. single-unit ribosomes for high speed translation. D. codon-anticodon reciprocal duplication. E. many RNA polymerase molecules to produce mRNA transcripts at the ...
Friday, May 13, 2011 at 1:49am
The number of oyster beds in Chesapeake Bay,which is an arm of the Atlantic Ocean,is dwindling rapidly.what effect would this have on the surrounding area?On the human community?
Tuesday, May 10, 2011 at 12:27am
Grade 12 Biology
If a life-form has six different bases-ABCDEFG. the percentage composition of A,B and C is same as EFG. Hypothesis the structure of the nucleic acid. I TRIED the search engine but didnt help, please help!
Monday, May 9, 2011 at 3:43pm
Would you like to help me answers some of my questions in Biology? 1/ Darwin concluded that the most well adapted individuals in a population will leave the most offspring for future generations. This can be considered a measure of an individual's.. a/ phylogeny b/ family ...
Sunday, May 8, 2011 at 11:03pm
How does the identification of cultural universals impact our understanding of what it means to be human. How does the search for Universals help us better understand human cultural behavior? What examples for out own culture can illustrate the ideas that our behaviors are ...
Sunday, May 8, 2011 at 11:48am
14 points Save A photosynthesis experiment uses Chlorella to track the route taken by 14C in photosynthesis. The 14C is provided from CO2 and no new sources of CO2 are available. After the experiment the scientist extracts all of the starch produced and analyses the Carbon ...
Saturday, May 7, 2011 at 9:01am
science - biology
A photosynthesis experiment uses Chlorella to track the route taken by 14C in photosynthesis. The 14C is provided from CO2 and no new sources of CO2 are available. After the experiment the scientist extracts all of the starch produced and analyses the Carbon present. She ...
Saturday, May 7, 2011 at 8:57am
3. In Biology, it is found that the bacteria in a certain culture double every half-hour. If the initial number of bacteria in culture is 1000, A. Find the defining equation for the number N of bacteria in culture after T hours, assuming that no bacteria die. B. How many ...
Wednesday, May 4, 2011 at 1:34pm
The doubling time of a type of bacteria is 35 minutes. If every bacterium reproduces, then after 35 minutes a population of 64 bacteria will have grown approximately to what size?
Thursday, April 28, 2011 at 12:36pm
A population of animals has a dominant allele for dark-colored fur and a recessive allele for light-colored fur. If the population of animals is 100 and 12 members of the population have the light-colored fur, about what percentage of the population is heterozygous? What ...
Wednesday, April 27, 2011 at 11:46am
To ensure that the mother will have mature egg cells available for in vitro fertiliazation, she must be treated with chemicals that regulate her reproductive cycle. identify these chemicals tha tregulate the female reproductive cycle. Please help me
Sunday, April 24, 2011 at 10:12pm
Pharmacists who are trained in the United States must earn a Pharm.D. degree from an accredited college or school of pharmacy. The Pharm.D. degree has replaced the Bachelor of Pharmacy degree, which is no longer being awarded. To be admitted to a Pharm.D. program, an applicant...
Sunday, April 24, 2011 at 7:07pm
Genetic Inheritance Exercise 1: F1 Hybrid Cross Results: Punnett Square for F1 Cross ¡V Expected Genetic Outcomes F1 Parent, genes: _________ (student to fill in the blanks) ¡ð alleles > ¡ñ alleles v F1 Parent, genes:__________ (student fill in ...
Sunday, April 24, 2011 at 4:22pm
Biology for Kate
I want back and posted something today...about 3 posts back. Let me collect some of the Biology tests online for you. When I get them, I'll post them after this post. Sra
Friday, April 22, 2011 at 6:35pm
I believe that I have answered the following questions correctly, but would like some reassurance. organisms that are used to decontaminate soils may a. store contaminates in their tissues b. release pollutants into the air c. degrade the pollutants d. be plants or ...
Friday, April 22, 2011 at 5:13pm
I'm having trouble answering this: The average size of a large fish that humans use for food has been decreasing over time, Exp-lain how, exactly, this happens - be sure to discuss genes, proteins, traits, and selection pressure. This is all I can answer :( The large fish ...
Thursday, April 21, 2011 at 8:36pm
What 'EXPERIMENT' did Craig Venter & Francis Collins do in the Human Genome Project? Any links would be great! I've found a lot of info. on what it is, but I'm looking for info on what they did to get there.
Tuesday, April 19, 2011 at 6:01pm
Suppose you have monohybrid pea plants in your garden and find that they produce round seeds to wrinkled seeds in the ratio of 3:1. If the alleles are designated R and r, respectively, what are the probable genotypes of the wrinkled seeds produced by your plants?
Thursday, April 14, 2011 at 9:23am
I want to imaging collagen and elastin in porcine heart tissue without staining using a confocal microscopy. So far most of the articles that I found are using staining to differentiate the two, is anyone familiar with the microscopy method
Thursday, April 14, 2011 at 3:47am
Cellular slime molds begin life as a group of seperate organisms,or individuals.After congregation,they become a single multicellular individual.Describe what is meant by this statement.
Wednesday, April 13, 2011 at 11:46pm
specialized cells in animals are all descended from a single ancestor cell.How are the specialized and the nonspecialized cells of the cellular slime molds related?
Wednesday, April 13, 2011 at 11:34pm
What are some recent (a few months old would be fine) newspaper articles (found online) about molecular biology? (Eg: cloning, genetically modified food, mutation, etc)
Tuesday, April 12, 2011 at 8:51am
true or false.. 1) A mature pine tree produces either male or female cones (F) 2) Virtually all of our food is derived, directly or indirectly from flowering plants. (T) 3) In vegetative reproduction, new plants may be generated from stems or roots. (F)
Tuesday, April 12, 2011 at 7:49am
Compare and Contrast the following thyroid disorders? 1. IODINE DEFICIENCY a. Does it cause goiter (yes or no) b. Is the metabolic too high or too low? (indicate which) c. Effect on TSH levels (will they increase or decrease?) d. What is the most appropriate way to treat this ...
Monday, April 11, 2011 at 2:43am
1. Owls sleep during the day and are awake at night because of their kind of estivation habituation* circadian rhythm conditioning 2. When a bird sings to signal others of the same species to keep away, it is showing signs of cheerfulness courtship behavior conditioning ...
Friday, April 8, 2011 at 10:13pm
You are gardening and accidentally puncture your arm with a nail that was in the soil. No significant occurred but your arm was swollen. Recall that soil contains many microorganisms that could be pathogenic. Describe in detail the nonspecific and specific mechanisms that ...
Thursday, April 7, 2011 at 5:17pm