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October 1, 2014

Homework Help: Science: Biology

Recent Homework Questions About Biology

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biology
what is a descriptive title for an experiment consisting of how alka seltzer dissolves if one is crushed and the other one is whole in warm and cold water?
Wednesday, September 11, 2013 at 5:53pm

Biology
Give two examples of each classes of phylum mullusca?
Wednesday, September 11, 2013 at 10:22am

Biology
What is torism? How do echinodermata digest larger prey out side their body?
Wednesday, September 11, 2013 at 10:18am

biology
concentration of methyl mercury in fish and number of meals safely consumed per month which is the dependent and independent does the dependent go on the y or x-axis
Tuesday, September 10, 2013 at 6:15am

biology
3.68kg=____________g
Monday, September 9, 2013 at 3:53pm

Biology
By what process are molecules absorbed into the large intestine?
Monday, September 9, 2013 at 9:16am

biology
Pseudoscience and nonscience differ in that:
Saturday, September 7, 2013 at 4:24pm

biology
Methyl mercury is a toxic substance that can harm the nervous system. Some fish are contaminated with high levels of methyl mercury. In many places, these fish are an important food source. Experiments are being conducted to determine how many meals of contaminated fish can be...
Friday, September 6, 2013 at 6:07pm

biology
Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the special juice to drink while they ...
Thursday, September 5, 2013 at 10:20am

biology
You need a 5 microgram glucose/ml aqueous solution, but the lab balance is accurate to only 0.01g (ie., it displays 2 digits to the right of the decimal point) Describe 2 methods by which you could accurately prepare this solution using the lab balance. I don't know what ...
Wednesday, September 4, 2013 at 2:56pm

Biology
Which of the following is a correct statement? A. Decomposition is an important part of only two of the three nutrient cycles. B. The nutrient cycles contain paths of elements through the living world but not through the nonliving world. C. Living organisms are able to convert...
Wednesday, September 4, 2013 at 12:38pm

Science/ biology PLEASE HELP!
Pick the correct answer to the following question. Write a brief statement explaining why each choice of answers is correct or incorrect. In diabetes mellitus, because of insufficient insulin production, glucose cannot enter cells. instead it accumulates in the blood plasma. ...
Tuesday, September 3, 2013 at 3:51pm

Science/Biology
Pick the correct answer to the following question. Write a brief statement explaining why each choice of answers is correct or incorrect. In diabetes mellitus, because of insufficient insulin production, glucose cannot enter cells. instead it accumulates in the blood plasma. ...
Tuesday, September 3, 2013 at 1:49pm

URGENT Science question
Justin wants to be the captain of an aircraft carrier when he gets out of school. Which subjects should Justin study to help him prepare for this career? biomedical science and meteorology oceanography and paleontology chemistry and biology physics and computer science*** Am I...
Tuesday, September 3, 2013 at 1:03pm

Please Help Biology Question
Pick the correct answer to the following question. Write a brief statement explaining why each choice of answers is correct or incorrect. In diabetes mellitus, because of insufficient insulin production, glucose cannot enter cells. instead it accumulates in the blood plasma. ...
Tuesday, September 3, 2013 at 12:20pm

Biology (Please Help: Urgent)
The Hardy-Weinberg formulas allow scientists to determine whether evolution has occurred. Any changes in the gene frequencies in the population over time can be detected. The law essentially states that if no evolution is occurring, then an equilibrium of allele frequencies ...
Friday, August 30, 2013 at 8:37am

Biology
Pick the correct answer to the following question. Write a brief statement explaining why each choice of answers is correct or incorrect. In diabetes mellitus, because of insufficient insulin production, glucose cannot enter cells. instead it accumulates in rhe blood plasma. ...
Wednesday, August 28, 2013 at 4:05pm

Biology
Which of the following is true? A.Biased thinking promotes scientific ideas. B.Open-mindedness restricts scientific thinking. C. Creativity fosters scientific discovery. D. Skepticism inhibits scientific exploration. I think it is C...?
Wednesday, August 28, 2013 at 10:39am

Biology
Describe how enzymes affect chemical reactions and explain why this makes enzymes important to living things. I need help this will be on my test I am studying for.
Wednesday, August 28, 2013 at 10:38am

Biology
Amino acid is to protein as A. fat is to lipid B. DNA is to RNA C. sugar is to fat D. simple sugar is to cellulose I think it is A..?
Wednesday, August 28, 2013 at 10:04am

Biology
You are testing a hypothesis that population density of a particular plant species influences the rate at which a pathogenic fungus infects the plant. Because the fungus causes visible scars on the leaves, you can easily determine whether a plant is infected. Design an ...
Monday, August 26, 2013 at 12:24pm

biology
Does each sister chromatid contain double stranded DNA?
Sunday, August 25, 2013 at 7:36pm

Biology
What does the notation 4n = 28 tell you about how many types of chromosomes there are and how many of each type of chromosome are present in a cell? I am a little confused on how this is determined. Would it be 4 sets of chromosomes with 7 of each type of chromosome?
Saturday, August 24, 2013 at 11:17pm

Biology
1. Given the following concordance rates, is the identified trait primarily genetic or environmental? Explain. MZ Twins DZ Twins Height 0.94 0.44 Measles 0.95 0.87 Migraine headaches 0.80 0.39 Body fat percentage 0.73 0.22
Thursday, August 22, 2013 at 4:38pm

Biology
The intracellular fluid concentration is 300 mOsm/kg. The extracellular fluid concentration is 280 mOsm/kg. The net movement of water is in which direction?
Wednesday, August 21, 2013 at 4:14pm

Biology
The intracellular fluid concentration is 300 mOsm/kg. The extracellular fluid concentration is 280 mOsm/kg. The net movement of water is in which direction?
Wednesday, August 21, 2013 at 4:13pm

Biology (Science)
Which of the following is not true about a hypothesis? 1) Previous knowledge can help support it. 2) It is a tentative explanation. 3) It can be proven to be false. 4) It must be testable to be useful. 5) It can be proven to be true. I know for sure that 2 and 4 is not the ...
Wednesday, August 21, 2013 at 2:28pm

Biology (Science)
John uses mechanical "predators" to approach frogs at a pond shore, and he records the distance between predator and frog as the frogs jump. (PEER REVIEW) On a walk around pond John sees that small frogs on the shore only allow him to get within 5 feet before jumping...
Wednesday, August 21, 2013 at 1:15pm

Biology
Draw a Punnett square to demonstrate the inheritance of cystic fibrosis with both parents being carriers
Tuesday, August 20, 2013 at 7:20pm

biology
which of the following properties of water would be most important in protecting a fish in a shallow pond on a hot summer day?
Tuesday, August 20, 2013 at 1:08pm

BiologyI
Discoveries in DNA, cell biology, evolution, biotechnology have been among the major achievements in biology over the past 200 years with accelerated discoveries and insights over the last 50 years. Consider the progress we have made in these areas of human knowledge. Present ...
Monday, August 19, 2013 at 2:20pm

Biology
The father of a mating pair expresses Huntington disease. The mother is healthy. What is the recurrence risk for the offspring? Draw a Punnett square to demonstrate the inheritance.
Sunday, August 18, 2013 at 9:09pm

Biology
Which of the following statements about the compound HCl is true? *The physical and chemical properties of HCl are different from those of H2 and Cl2. *Only the physical properties of HCl are different from those of H2 and Cl2. *Only the chemical properties of HCl are ...
Thursday, August 15, 2013 at 5:07pm

biology
identify and describe how organism could respond to an external stimulus
Wednesday, August 14, 2013 at 2:27pm

Biology please help
1. Contraction of the diaphragm causes: A. a person to exhale. B. the size of the chest cavity to increase. C. air to flow from the lungs to the outside. D. compression of the lungs. is it B 2. The function of the large intestine is to: A. supply enzymes for digestion. B. ...
Saturday, August 10, 2013 at 11:59am

Biology
1. Muscles are grouped in antagonistic sets because: A. muscles cannot lengthen by themselves. B. muscles push but cannot pull. C. they do not like one another. D. there is an increase in metabolic efficiency if they are present in antagonistic sets. is it A 2. In most women&#...
Saturday, August 10, 2013 at 11:47am

Biology
1. Contraction of the diaphragm causes: A. a person to exhale. B. the size of the chest cavity to increase. C. air to flow from the lungs to the outside. D. compression of the lungs. is it B 2. The function of the large intestine is to: A. supply enzymes for digestion. B. ...
Saturday, August 10, 2013 at 10:39am

Biology
1. Unprotected seeds are found in: A. cones. B. perfect flowers. C. imperfect flowers. D. fruit. im confused between A n D 2. The most harmful parasite for plants and animals is the: A. roundworm. B. protozoan. C. fungus. D. flatworm. is it A 3. Benthic organisms are found: A...
Tuesday, August 6, 2013 at 1:51pm

biology- photosynthesis
There is a distinct oscillation of CO2 during each year as CO2 is added to the atmosphere each winter or removed from the atmosphere each summer. Explain what specific cellular processes lead to these changes in CO2 level. You must explain what causes CO2 to be released to the...
Tuesday, August 6, 2013 at 8:51am

biology
Explain how new species can originate without geographical barriers.
Thursday, August 1, 2013 at 3:48pm

biology
In a laboratory population of diploid, sexually reproducing organisms a certain trait is determined by a single autosomal gene and is expressed as two phenotypes. A new population was created by crossing 102 pure–breeding (homozygous) dominant individuals with 98 pure ...
Thursday, August 1, 2013 at 2:48pm

biology
In a population that is in Hardy–Weinberg equilibrium for two alleles, C and c, 16% of the population shows a recessive trait. Assuming C is dominant to c, state the percent of the population shows the dominant trait? Show your work. Thank you!
Thursday, August 1, 2013 at 2:00pm

biology
In a population with two alleles, B and b, and the allele frequency of b is 0.4. Calculate the allele frequency of heterozygotes if the population is in Hardy–Weinberg equilibrium? Show your work. Thanks for any help in advance!
Thursday, August 1, 2013 at 12:20pm

biology multiple choice
I am preparing my self for a biology exam and i am going through past papers. Unfortunately they do not supply us with the answers, which in one way is good.(since you have to actually work for your answers) All I am asking of you people is that you run over my answers and see...
Thursday, August 1, 2013 at 6:13am

biology
Why all enzyme work well in their own optimum temperature and optimum pH ? i need more explanation about why different enzyme have different optimum temperature and different optimum pH to react. i hope to get a long explanation for my essay that contain 5 marks.
Wednesday, July 31, 2013 at 11:22am

Biology
Which of the following best predicts the response of a trait to artificial selection? VA VG standard deviation h2 H2
Wednesday, July 31, 2013 at 12:46am

biology
Do all enzymes function within the different temperature range, like they do with pH?
Monday, July 29, 2013 at 4:21pm

biology
Post a 200- to 300-word response to the following: Many studies have been conducted on cerebral lateralization revealing different functionalities of the left and right hemispheres. Describe four methods for studying cerebral lateralization.
Thursday, July 25, 2013 at 3:31pm

biology
Properties of life and recognizing living and nonliving things What does it take to be a living organism
Thursday, July 25, 2013 at 12:09pm

Biology
Is there any biology websites for teens??? (NOT games! notes and quizzes to practice). The Science of Biology The Chemistry of Life Cell Structure and Function Photosynthesis & Respiration Something REALLY easy to understand(btw I'm going to the 9TH GRADE). please help (...
Wednesday, July 17, 2013 at 6:01pm

biology
This question consisted of a pedigree which involves certain inbred individuals which you are going to identify. The inbred coefficient is for one of the first cousins named Stormy is F = 0.08. An individual called Shady is a parent. Question: Is Shady inbred? How did you ...
Sunday, July 14, 2013 at 7:39pm

biology
Certain spider toxins work by inhibiting Ca2+ channels. Briefly explain how this works and what happens to the person.
Saturday, July 13, 2013 at 6:36pm

biology
1. Enzyme competition occurs when: A. one type of enzyme reacts with one type of substrate. B. an enzyme does not react with a substrate. C. three different types of enzymes react with one type of substrate. D. an enzyme stops a reaction. is it C 2. The proton pump is ...
Saturday, July 13, 2013 at 3:13pm

Biology
1. Some people get repeated fungal infections because they cannot destroy these dangerous microbes after their white blood cells phagocytize them. This most likely means that these people have __________ that do not work properly. A. ribosomes B. lysosomes C. mitochondria D. ...
Saturday, July 13, 2013 at 2:59pm

Biology
Will you please check my answers? 1. Single-celled organisms that do not have a membrane-bound nucleus are called A. organelles. B. prokaryotes. C. Golgi bodies. D. eukaryotes. 2. In cells, a form of active transport is A. a sodium-potassium pump. B. osmosis. C. facilitated ...
Friday, July 12, 2013 at 6:40pm

Biology
Which is NOT a major function of proteins? A. Provides cell structure B. Stores energy for the cell C. Functions as regulator molecules in cellular activity D. Functions as carrier molecules is it D
Wednesday, July 10, 2013 at 3:38pm

Biology
1. A theory and a hypothesis are different in that: A. you must have a theory before you can form a hypothesis. B. a theory is developed as a result of broad agreement among scientists and a hypothesis is a much less substantiated idea. C. a theory is much easier to disprove ...
Wednesday, July 10, 2013 at 3:28pm

biology
Olive oil is an unsaturated fat. Does the Sudan Red Test differentiate between saturated and unsaturated fats?
Monday, July 8, 2013 at 1:02am

biology
An example of assimilation is the: a. synthesis of carbon b. synthesis of proteins c. hydrolysis of water d. hydrolysis of oxygen I think it is B or C but I am not sure. help please
Wednesday, July 3, 2013 at 3:22pm

biology
Relate membranes to energy metabolism, redox reactions, and ATP synthesis in both eukaryotic and prokaryotic cells.
Wednesday, June 26, 2013 at 8:29pm

biology
i wanted to see the daigram colony
Thursday, June 20, 2013 at 1:21pm

biology
a woman whose father had hemophilia and whose mother was normal married a man whose father did not have hemophilia but whose mother did . if the couple's first child was a son what are the chances that he would show the trait of hemophilia?
Wednesday, June 19, 2013 at 6:16am

Biology
Calculate the % change in concentration of oxygen when the water temperature rises from 10degree C to 15degree C.show your working?
Saturday, June 15, 2013 at 1:01pm

social science
how is biology related to tourism?
Thursday, June 13, 2013 at 9:45am

Biology
Hi My bio HW is asking what are the symptoms and host response for tuberculosis.... i have the symptoms but I need help with what the host response are.... Thanks
Wednesday, June 12, 2013 at 8:38am

biology
Explain how life on earth is dependent on both polarity of covalent chemical bonds and hydrogen bonding. Reference water, proteins and nucleic acids in your answer.
Sunday, June 9, 2013 at 4:42pm

Biology
Explain how life on earth is dependent on both polarity of covalent chemical bonds and hydrogen bonding.
Friday, June 7, 2013 at 7:12pm

Psychology Help Please
When rethinking a problem why do people do a social comparison? What school of thought did client centered therapy come from? What is the biology of love based on? If a person sees the glass half full, what type of outlook do they have? Human sexuality is influenced by three ...
Thursday, June 6, 2013 at 8:10pm

Biology
What are the three main type of producers?
Wednesday, June 5, 2013 at 7:24pm

Math>> Help!!
Seats for Mathematics, Physics and Biology in a school are in the ratio 5:7:8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats?
Wednesday, June 5, 2013 at 7:09pm

Biology
Describe how you would prepare 10 mL each of 2 M, 1.5 M, and 1 M NaCl solutions from a 2 M stock NaCl solution. Describe your actions–exactly what you would do –step-by-step–when preparing this solution. Also show all calculations. Be sure all amounts include ...
Wednesday, June 5, 2013 at 5:36pm

biology
wer can i get synthetic plant hormones
Saturday, June 1, 2013 at 12:19pm

Biology
How does the structure of Earth’s interior affect seismic waves?
Friday, May 31, 2013 at 3:10am

biology
Alkaptonuria results when an individual has no functional HGD enzyme. Without functional HGD, breakdown of excess tyrosine stops at homogentisate. The accumulated homogentisate is polymerized by the enzyme polyphenol oxidase to a complex set of molecules called “...
Tuesday, May 28, 2013 at 7:16am

Biology
What is the defferent of prokaryotic and eukaryotic cells
Monday, May 27, 2013 at 4:44pm

BIOLOGY!!!!!!
What is the reletive amounts of mRNA that will e transcribed if there is no promoter and enhancer?
Wednesday, May 22, 2013 at 5:33pm

biology urgent
Glucose is transported into a cell through a process of co-transport, where it is moved against its concentration gradient through a membrane channel. Moving any molecule against its concentration gradient requires energy, but these glucose channels do not require ATP or any ...
Tuesday, May 21, 2013 at 8:55am

Sociology of Sports
Would Someone PLEASE HELP? 1.Deviant overconformity is associated with some forms of violence in sports. The roots of this violence are grounded in (d) A. a desire for self-fulfillment and personal satisfaction. B.a lack of loyalty to team rules. C.the desire to gain ...
Saturday, May 18, 2013 at 1:47pm

biology
ap biology lab -what barriers might hinder the acquisition of plasmids
Friday, May 17, 2013 at 10:28am

bio
I am doing the biology ap bacteria DNA transformation lab and I came up with a transformation efficiency of 150,000. I read somewhere that they should be between 2,000-8,000. is my answer way off? My group counted an average of 1529 colonies to begin with so i dont see how the...
Friday, May 17, 2013 at 10:15am

Biology
I need help in tying 3 things from: cellular respiration, energy transfer, osmosis, ATP to the water cycle
Thursday, May 16, 2013 at 8:51pm

biology
For each of these restriction enzymes, determine whether or not the enzyme would cut the normal, Mutant A, Mutant B, or Mutant C DNA sequences described in part (g) and select your answers in the table below:
Wednesday, May 15, 2013 at 6:49pm

biology department
Approximately how many mL of 5% BaCl22H2O solution would be required to precipitate all the sulfate if we assume that your samples are pure sodium sulfate? Assume that the density of the barium chloride solution is 1.00 g/mL
Wednesday, May 15, 2013 at 2:33pm

biology
4.3kj of heat energy stands for how many burgers ?
Tuesday, May 14, 2013 at 10:57am

biology
A researcher develops a new drug that kills cells by preventing transcription. The most direct effect of the drug is to prevent cells from? A. making new DNA. B. exporting substances to the cytoplasm. C. making protein. D. breaking down substances in the cytoplasm.
Monday, May 13, 2013 at 4:57pm

biology
The nonliving matrix of the connective tissue through which the blood cells freely flow is the? A. plasma B. extracellular fluid. C. intracellular fluid. D. submucosa
Monday, May 13, 2013 at 3:12pm

biology
The scientific binomial name of a species is Canis vulpis. Which of the following is true? A. the species belongs in the family Canis. B. the species belongs in the genus vulpis. C. the species belongs in the genus Canis. D. the species belongs in the family vulpis.
Monday, May 13, 2013 at 3:02pm

Biology
What causes mutations in bacteria? and Can mutations affect plasmids?
Monday, May 13, 2013 at 1:20pm

Biology
Consider the close-up view of a segment of DNA undergoing transcription from left to right. Transcription begins at and includes the G/C base pair shown in bold green type.
Saturday, May 11, 2013 at 11:02am

Biology
How does the changes in the DNA code from CTT to CAT in the beta chain of haemoglobin affect cell activity?
Monday, May 6, 2013 at 9:35am

Biology
If a normal man marries a normal woman whose father was colourblind, what are the chances that their sons and daughters will be colourblind? Colourblindness is a sex-linked trait that affects males more often than females. With the aid of a Punnett square, indicate the ...
Sunday, May 5, 2013 at 2:55pm

Biology
Once blood picked up nutrients from the small intestine, it must pass through the liver via the inferior vena cava. Explain the importance of this pathway.
Sunday, May 5, 2013 at 2:27pm

Biology
Once blood picked up nutrients from the small intestine, it must pass through the liver via the inferior vena cava. Explain the importance of this pathway.
Sunday, May 5, 2013 at 1:28pm

Biology
An individual with blood type O receives type A blood. The phenomenon is agglutination. Can explain more?
Sunday, May 5, 2013 at 12:39pm

Biology
true or false if an organism randomly develops a feature that gives it a survival advantage, then it will be more likely to survive than other organisms, and will also be more likely to produce offspring which also have this advantageous feature. Eventually, many organisms ...
Sunday, May 5, 2013 at 9:12am

biology
To produce human protein X in bacterial cells, the plasmid (vector) that is chosen should have a _______________ promoter, and the source DNA should be ___________________. Which of the following best completes the sentence above? strong, wild type genomic strong, mutant ...
Thursday, May 2, 2013 at 2:51am

biology
Alcanivorax is a naturally occurring oil-degrading marine bacterium that can quickly become the predominant microbe in oil-contaminated open oceans and coastal waters. To identify the genes important for the oil-degrading ability, you could attempt the following: 1) You might ...
Thursday, May 2, 2013 at 2:50am

biology
A plasmid (vector) designed for use in bacterial cells is different from a plasmid (vector) designed for use in yeast cells. Listed below are three DNA features found on both plasmid types. If the DNA sequence of each feature could be the same on the two different plasmids, ...
Thursday, May 2, 2013 at 2:50am

biology
A common first step in the making of a DNA library is to obtain DNA from many of your chosen organisms and cut this source DNA with a restriction enzyme. It is likely that some genes will contain sites for the chosen restriction enzyme, and in this case, your DNA library will ...
Thursday, May 2, 2013 at 2:49am

biology
Hemoglobin is a critical oxygen-carrying protein. The protein functions as a tetramer with two α-globin subunits and two β-globin subunits. Individuals homozygous for a specific single point mutation in the region that encodes the sixth amino acid in β-globin ...
Thursday, May 2, 2013 at 2:43am

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