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August 22, 2014

Homework Help: Science: Biology

Recent Homework Questions About Biology

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College Biology
The RBC osmolarity of a patient is 300 mOsm/L and is given 1L of distilled water and starts with 3L of plasma. What is the plasma osmolarity after infusion mixes with plasma but before water enters her RBC? Once infused water equilibrated between plasma nad RBA what is her ...
Sunday, January 30, 2011 at 12:24pm

science:Biology
how can you identify the following living organisms using key bird,goat,dog,lizard,fish
Sunday, January 30, 2011 at 8:58am

Biology
Which of the following statements about sexual and asexual reproduction is FALSE? A)Genetic diversity occurs in sexual reproduction. B)Asexually reproducing organisms can repair their own DNA. C)There are no special reproductive cells in asexual reproduction. D)A gametophyte ...
Friday, January 28, 2011 at 4:31am

biology
well i need to know why these equation equals 2Mol the equation is: 116g por litro es 2M and 11.6g en 100mL is 2M
Thursday, January 27, 2011 at 8:53pm

biology
1-What are the various types of blood cells seen circulating within the body and how are they distinguished from each other? What impact do they have on the immune system.
Thursday, January 27, 2011 at 5:52pm

Biology
What is the relationship between an increase in light intensity and photosynthetic rate in leaves from a corn plant? How does this relationship compare with the tomato plants?
Thursday, January 27, 2011 at 1:06am

Biology!!
The lifespan of plants varies depending on genetics and survival strategies. Discuss the adaptive value of annual, biennial, and perennial life spans.
Wednesday, January 26, 2011 at 2:33am

biology
A gene for flower color can have multiple alleles like purple, white, or red. true or false?
Tuesday, January 25, 2011 at 11:45pm

biology
Suppose you have monohybrid snapdragons in your garden and you find that they produce red seeds to white seeds in the ratio of 3:1. If the alleles are designated R (red seeds) and r (white seeds), what are the probable phenotypes of the parents (P1)? a all white b all red c ...
Tuesday, January 25, 2011 at 11:33pm

SCIENCE/BIOLOGY
How does alanine differ from glycine
Tuesday, January 25, 2011 at 10:44pm

Biology/Zoology
Do bony fishes have a dermal bone?
Tuesday, January 25, 2011 at 7:52pm

biology
I'm doing a paper on a case study. The man, John Doe, is 55 years old, has high cholesterol, and has experienced frequent chest pains, profuse sweating, dizziness, and shallow breathing. These are the questions I have to answer: 1) What physiological response helped John ...
Tuesday, January 25, 2011 at 2:03pm

biology
What physiological response helped John to survive this heart attack?
Tuesday, January 25, 2011 at 1:49pm

Biology
Explain how negative feedback systems maintain homeostasis in non-stable environments.
Tuesday, January 25, 2011 at 6:11am

Biology
What are 3 components of the regulatory control system of the body?
Tuesday, January 25, 2011 at 6:10am

Biology
In each set up the dialysis tubing contains a solution of 30% glucose and safranin. However, the set ups differ in the contents of the beaker. The control set up has the same solution in the beaker while in the experimental set up it contains just water. In both the level of ...
Monday, January 24, 2011 at 7:30pm

Biology
10. In some cats the gene for tail length shows incomplete dominance. Cats with long tails and cats with no tails are homozygous for their respective alleles. Cats with one long tail allele and one no tail allele have short tails. For each of the following construct a punnett ...
Monday, January 24, 2011 at 6:01pm

biology
Most homeostatic mechanisms are controlled with a negative feedback loop. Explain why this mechanism may be more efficient at maintaining homeostasis as compared to positive feedback mechanisms. Provide examples of both
Sunday, January 23, 2011 at 10:21pm

biology
a biologist prepared a strip of agar (a gelatin- like substance) as shown in the figure below. at position 7, he placed a concentrated sample of amino acid A and at position 1, a concentrated sample of enzyme E. E is known to catalyze the conversion of A to a product P. Assume...
Sunday, January 23, 2011 at 8:42pm

biology
I am posting this question in Biology instead of Algebra even though it is a question from my Algebra class. Thanks. A male bee has only one parent(a mother) and a female bee has two parents (a mother and a father).Assuming all ancestors are distinct, how many great, great, ...
Sunday, January 23, 2011 at 8:23pm

Biology DUE TOMORROW
Hello, I need help doing a 16 box Punnett Square on this problem: Tongue rolling (rolling the tongue into a “taco”shape) is dominant over not having the ability to roll the tongue (R and r- respectively). Having free earlobes is dominant to attached (F and f ...
Sunday, January 23, 2011 at 8:12pm

biology
For lunch, Jane Doe consumed the following: a turkey sandwich on whole wheat bread with mayonnaise, lettuce, and tomato; potato chips; and apple juice. (1) Trace the path of digestion through Jane from beginning to end.
Sunday, January 23, 2011 at 7:04am

Genetics- Biology
You have two parents (1)fast-growing vines with weak stalks, and (2) slow-growing vines with strong stalks. You cross the two pure-breeding vines but obtain only slow-growing plants with weak stalks. You then self-cross the F1 vines a number of times, but obtain only the F0 or...
Sunday, January 23, 2011 at 1:32am

biology
If I was 100% water what would my volume be?
Saturday, January 22, 2011 at 2:22pm

biology
Most homeostatic mechanisms are controlled with a negative feedback loop. Explain why this mechanism may be more efficient at maintaining homeostasis as compared to positive feedback mechanisms. Provide examples of both.
Friday, January 21, 2011 at 6:47pm

Biology
What would a cladogram look like?
Friday, January 21, 2011 at 6:42pm

Biology
OK, I give up. No where do I find a clear yes or no to this question. Fossil evidence indicates that humans have not undergone many anatomical changes over the last 200,000 years. From what I have read it seems like they have. Am I correct?
Thursday, January 20, 2011 at 2:04pm

Biology
Compare and contrast the terms aerobic process and anaerobic process.
Thursday, January 20, 2011 at 11:13am

Biology
Explain the importance of carbon's ability to form covalent bonds in straight chains, branched chains, or rings.
Thursday, January 20, 2011 at 11:13am

Biology
How do the heart, capilaries, arteries and veins work to distribute materials through the body?
Wednesday, January 19, 2011 at 10:17pm

Biology
I don't know any info an the first semester and midterms are tomorrow please help ( Populations, Communities, and Ecosystems Chemistry of Living Things History of Life on Earth: The First Simple Cells History of Life on Earth: Complex Cells Cells and Their Environment ...
Wednesday, January 19, 2011 at 9:57pm

algebra
neil was growing a culture of bacteria for a biology experiment. he noticed that the population doubled after 90 minutes. if the population grows exponentially, how many times the original population will there be after six hours?
Wednesday, January 19, 2011 at 4:08pm

biology/chem
How many grams of glucose (MW = 180 g) should we dissolve in one liter of water to get 1 molar solution?
Wednesday, January 19, 2011 at 12:54pm

biology/chem
How many grams of glucose should we dissolve in one liter of water to get a 0.9% solution?
Wednesday, January 19, 2011 at 12:53pm

biology
40. Explain the importance of carbon's ability to form covalent bonds in straight chains, branched chains, or rings. (3 points)
Tuesday, January 18, 2011 at 2:27pm

Biology (alert!)
Which sentence do you think does not agree with the true facts of coral reefs? 1. Off shore coral reefs are the cause of terrible storms in coastal communities. 2. Coral reefs form when the shells of thousands of corals join. 3. Sponges gives out chemicals that harden around ...
Tuesday, January 18, 2011 at 9:16am

gcse biology
who discovered dna? was it friedrich miescher,francis crick and james watson or rosalind franklin???? in know someone asked the same question yesterday but im still stuck any help would be great thankyou.
Tuesday, January 18, 2011 at 8:53am

biology
yesterday i posted a question about who discovered DNA and Ms Sue kindly helped me but im confused about who actually discovered DNA because there are four different names Friedrich Miescher,Rosalind Franklin,james D Watson and Francis Crick. my homework question is who ...
Tuesday, January 18, 2011 at 5:28am

BIOLOGY
What are the factors that lead to have low energy in men during sexual activity?
Tuesday, January 18, 2011 at 3:14am

Biology help :(
Place the following process in the correct order. a) urine is stored in the bladder. b) blood enters the afferent arteriole. c) fluids pass from the glomerulus into Bowman's capsule. d) urine is excreted by the urethra. e) sodium ions, glucose and amino acids are actively ...
Monday, January 17, 2011 at 10:13pm

Biology
Your research team suspects that lactose intolerance is a recessive trait. Which of the following observations would contradict your theory? a) Two lactose intolerant parents always have children who are lactose intolerant b) Genetic analysis shows that individuals must ...
Monday, January 17, 2011 at 9:27pm

biology
which process most likely caused the change in CO2 level in the flask over the lasy 37 minutes?
Monday, January 17, 2011 at 9:00pm

biology
Most homeostatic mechanisms are controlled with a negative feedback loop. Explain why this mechanism may be more efficient at maintaining homeostasis as compared to positive feedback mechanisms. Provide examples of both to illustrate.
Monday, January 17, 2011 at 7:45pm

biology
Why might people in the United States be more likely to be malnourished as compared to undernourished? What is the difference between the two and why is this important to know?
Monday, January 17, 2011 at 5:59pm

biology
Jane is diabetic. How does this meal affect her condition and what interventions may be needed to return her body to homeostasis
Monday, January 17, 2011 at 1:21pm

biology
Who discovered DNA was it James Watson and Francis Crick or Friedrich Miescher ? thankyou
Monday, January 17, 2011 at 1:12pm

biology
what cgange occurred in the shape of the horse from hyracotherium to equus?
Monday, January 17, 2011 at 1:02pm

Biology 12-DNA
suppose you knew the makeup of specific proteind in a cell. how would you determine the particular DNA code that coded for them?
Sunday, January 16, 2011 at 8:23pm

Biology
Are prokaryotes able to live on inorganic energy sources?
Sunday, January 16, 2011 at 7:39pm

biology
compare asexual reproduction and sexual reproduction
Sunday, January 16, 2011 at 6:43pm

Biology!!
Darwin is considered the "father of evolutionary biology." Four of his contributions to the field of evolutionary biology are listed below. The nonconstancy of species. Branching evolution, which impleies the common descent of all species. occurrence of gradual ...
Sunday, January 16, 2011 at 5:25pm

biology
rana pipiens, a species of frog, has a diploid chromosome number of 26. a. how many chromosomes are present during metaphase i? per cell? b. how many chromatids are present during anaphase i ? per cell? c. how many centromeres are present during telophase I? per cell? d. how ...
Saturday, January 15, 2011 at 11:13pm

biology
which kind of mutation affects the individual and which kind of mutuation affects the population?Why?
Saturday, January 15, 2011 at 5:52pm

Biology
Why is the manner in which subjects are assigned to study groups important to the validity of scientific investigation?
Friday, January 14, 2011 at 9:14pm

Biology
Why is the manner in which subjects are assigned to study groups important to the validity of scientific investigation?
Friday, January 14, 2011 at 9:08pm

Biology
Im doing an experiment in Biology on a drug, but im not sure where I can find information on the drug Chantix. i also have a few general questions I was hoping you could help me with... 1. Why is it improtant to have as many subjects as possible in an investigation? 2. why is ...
Friday, January 14, 2011 at 6:32pm

Biology (immune system)
How does the immune system help maintain homeostasis? Help me please :(
Thursday, January 13, 2011 at 9:17pm

english
Hi I have some questions and I would really if you answer my questions! I want to be Nurse Practitioner and I am very passion about it. But I have a lot of problems. First English is not my native language, second I am not good at math, third I am kind intimidated by the ...
Thursday, January 13, 2011 at 9:15pm

biology
A eukaryotic gene typically has all of the following features except: a) an operator b) control elements c) a promoter d) introns e) a terminator
Thursday, January 13, 2011 at 5:06pm

biology /cell analogy
Can you help me find an everyday object that has a similar function as : 1-Golgi Bodies an example 2-Lysosome an example kitchen garberator 3- peroximes example a gym 4-Vesicules/vacuoles an example water bottle 5-Cytoskeleton an example 6-Microvilli an example 7- Cilia an ...
Wednesday, January 12, 2011 at 10:50pm

biology
what adaptations do plants that live in low nitrogen habitats, such as the tundra ecosystem, possess?
Wednesday, January 12, 2011 at 10:07pm

biology
Nitrogen gas is the most abundant gas in the atmosphere. Why is it not useful to most organisms in its atmospheric state?
Wednesday, January 12, 2011 at 9:12pm

biology
Can you help me find an everyday object that has a similar function as : 1-Golgi Bodies an example 2-Lysosome an example kitchen garberator 3- peroximes example a gym 4-Vesicules/vacuoles an example water bottle 5-Cytoskeleton an example 6-Microvilli an example 7- Cilia an ...
Wednesday, January 12, 2011 at 7:57pm

Biology/help please
Can you help me find an everyday object that has a similar function as : 1-Golgi Bodies an example 2-Lysosome an example kitchen garberator 3- peroximes example a gym 4-Vesicules/vacuoles an example water bottle 5-Cytoskeleton an example 6-Microvilli an example Can you help me...
Wednesday, January 12, 2011 at 7:32pm

biology
What is the difference between ATP synthetase and ATP synthase?
Wednesday, January 12, 2011 at 5:50pm

Science
For my Biology class, I need to find and print out an article that talks about renewable resource technology or new technology that is beneficial to the environment. Can anyone help me find any good ones?
Wednesday, January 12, 2011 at 5:39pm

Biology
why is a cell small? and how can this be related to the diffusion rate and the synthetic capacity?
Tuesday, January 11, 2011 at 9:15pm

Biology
why is a cell small? and how can this be related to the diffusion rate and the synthetic capacity?
Tuesday, January 11, 2011 at 9:04pm

Biology
What role do high-energy electrons play in the electron transport chain?
Tuesday, January 11, 2011 at 8:33pm

Biology
What is a cell?
Tuesday, January 11, 2011 at 4:13pm

Biology
I have a biology worksheet that talks about secondary and primary succesion. I looked it up, and I found that Presque Isle is an example of primary succession. But, what happened there?
Monday, January 10, 2011 at 6:25pm

Biology
how does the external environment of an organism can affect gene function.
Sunday, January 9, 2011 at 10:32pm

high school biology
2. Discuss the implication of pollution of the marine and wet land environment. Sight examples from 2 named caribbean countries.
Sunday, January 9, 2011 at 7:20pm

Biology
Which of the following is NOT consumed by fungal decomposers? A. First-order heterotrophs B. Third-order heterotrophs C. Producers D. None of the Above
Saturday, January 8, 2011 at 7:53pm

Biology
Which of the following is NOT consumed by fungal decomposers? A. First-order heterotrophs B. Third-order heterotrophs C. Producers D. None of the Above
Saturday, January 8, 2011 at 7:45pm

biology
which level of organization encompasses all of the others? A. Ecosystem B. Community C. Population D. Division
Saturday, January 8, 2011 at 7:18pm

BIology
Reptiles have some specific adaptations that make them well suited to their environment. In your own words, discuss some of these adaptations by answering the following questions. Each answer should be constructed in one or two well-developed paragraphs. a. What is the ...
Saturday, January 8, 2011 at 5:33pm

biology
is glycine the most rigid amino acid in collagen
Wednesday, January 5, 2011 at 11:33pm

biology
are both ER and secretory vesicles have double bilayer membrane
Wednesday, January 5, 2011 at 8:51pm

biology
21% of a population is homozygous dominant, 49% are heterozygous and 29% are homozygous recessive. if the Hardy-Weinberg Law applies, what percentage of the next generation is predicted to be homozygous recessive?
Tuesday, January 4, 2011 at 6:58pm

Biology
Suppose in a breeding experiment, you combined 7,000 AA individuals and 3,000 aa individuals, and they mated randomly. After the first generation, what would be the value of p2 (p squared) ? of q2 (q squared)? of 2 pq? what would be the value after the second generation if the...
Tuesday, January 4, 2011 at 6:36pm

biology
what are the sequences of event hat result in erythroblastosis fetalis
Monday, January 3, 2011 at 10:31am

biology
what are the sequences of event hat result in erythroblastosis fetalis
Monday, January 3, 2011 at 10:30am

biology
List,explain and provide an example of 3 natural interactions that exist between species.
Sunday, January 2, 2011 at 3:27pm

grade 9 science biology
What activities increase the amount of carbon dioxide in the atmosphere? What activities decrease the amount of carbon dioxide in the atmosphere?
Sunday, January 2, 2011 at 2:52pm

Biology
List and describe the steps involved when a gene in person's genotype is expressed to create a biochemical or physical characteristics that is a part of the persons phenotype.
Saturday, January 1, 2011 at 9:47pm

grade 9 science biology
What happens to the available energy in an ecosystem?
Wednesday, December 29, 2010 at 7:21pm

grade nine science biology
With aid of a diagram , I need to illustrate and explain how the following nutrients are cycled through each 4 spheres. Carbon nitrogen and water
Wednesday, December 29, 2010 at 6:19pm

biology can someone check
Identify each of the parentheses items as an independent or dependent variable. 1)The (number of red blood cells )independent in a mouse's blood at(different levels of iron) dependent in its diet. 20)The (amount of starch formed)dependent in a plant leaf for (different ...
Tuesday, December 28, 2010 at 9:41pm

biology can someone check
Decide if each of the following statements is true.If it is not rewrite the parentheses part to make it true. 1) Scientific methods include observation,(forming a hypothesis, and experiment). ans: false ;answer questions; solve problems 2)A statement that can be tested and ...
Tuesday, December 28, 2010 at 9:25pm

biology
.A ______________ _ is a signal to which an organism responds
Monday, December 27, 2010 at 10:56pm

biology /check please
Is this true or false? 1. Ideas about the value of knowledge gained through scientific research come from a society's social, ethical, and moral concerns. 2. Pure science is scientific research carried out primarily to solve specific environmental problem. 3. Technology is...
Thursday, December 23, 2010 at 1:36pm

biology can someone check
Is this true or false? 1. Ideas about the value of knowledge gained through scientific research come from a society's social, ethical, and moral concerns. 2. Pure science is scientific research carried out primarily to solve specific environmental problem. 3. Technology is...
Thursday, December 23, 2010 at 12:50pm

biology /check please
Use each terms below just once to complete the passage. (1)experimental results ,(2) experiment(s), (3)hypotesis ,(4) laws ,(5) scientific journals , (6)theory ,(7) valid ,(8) verify. When (experimental) results are reported in (scientific journals) other scientits may try to...
Thursday, December 23, 2010 at 2:02am

Biology
Thanks to SraJMcGin for the links but I really don't understand this and am hoping someone can give me a really simple explanation so I get get my head around the question..... Describe the cellular specialisation that has occured in muscle cells.
Wednesday, December 22, 2010 at 11:02pm

biology
1.can introduced species strengthen the immune system of the native species 2. can an introduced species change thec composition of the natural habitat so it is unsuitable for the native species
Wednesday, December 22, 2010 at 6:28pm

biology
can foreign species improve the stability of the habitat of the native cpecies
Wednesday, December 22, 2010 at 6:22pm

Biology
Which is the correct base pairing: Adenine - Guanine Adenine - Cytosine Thymine - Guanine Thymine - Adenine Cytosine - Thymine
Wednesday, December 22, 2010 at 5:52am

Biology
Describe the cellular specialisation that has occured in muscle cells.
Wednesday, December 22, 2010 at 5:50am

biology
does denitrification occur in root nodules of legumes?
Tuesday, December 21, 2010 at 7:25pm

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