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December 20, 2014

Homework Help: Science: Biology

Recent Homework Questions About Biology

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math
In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 16% of your total grade, each major test is worth 21%, ...
Sunday, June 3, 2012 at 1:39pm

biology
Help me to understand diverse organism! Pleas also include website that help you become better at taking notes. Thank you..
Thursday, May 31, 2012 at 6:01pm

biology i need help urgent
what characteristic distinguishes arthropods from other invertebrates? a. the colem b.the endoskeleton c.jointed appendages d.bilateral symetry
Wednesday, May 30, 2012 at 9:51am

biology
what is a notochord, and what is the notochord surrounded by
Wednesday, May 30, 2012 at 9:41am

biology
the gene for eye colour is located on ? a) x chromosome b) y chromosome c) both a and b d) non of them
Tuesday, May 29, 2012 at 4:04am

biology
which of the following cannot cause change in gene pool a) mutation b) migration c) meiosis d) genetic drift
Tuesday, May 29, 2012 at 3:43am

Biology
Which is the correct direction of blood flow? a) right atrium --> right ventricle --> pulmonary artery b) right atrium --> left atrium --> pulmonary artery c) left ventricle --> pulmonary artery --> aorta d) left ventricle --> left atrium --> aorta
Monday, May 28, 2012 at 8:15pm

Biology
The Kingdom Monera has been separated into two domains, the Archaea and the Bacteria. Which of the following was most important in prompting scientists to change the way these organisms were classified? a.)Major differences were discovered in the structure and operation of the...
Sunday, May 27, 2012 at 5:48pm

biology
In rabbits, there are four different versions of the gene for coat color. What pattern of inheritance is this?
Thursday, May 24, 2012 at 9:03pm

Biology
In general, how do neuron inhibit cells?
Wednesday, May 23, 2012 at 4:29pm

biology
Need help with FOV area (mm2) totally confused? im confused i have the FOV diameter they are: 4x = 5 10x = 2 40x = 0.5 a classmate told me she thinks the area for 40 x is: pi(5/2)^2 = 19.6 not sure if thats true or how to do it for the low and medium, magnification. please ...
Tuesday, May 22, 2012 at 3:33pm

Marine Biology
Surface currents are created by wind and the Earth's rotation. What creates deep water currents?
Tuesday, May 22, 2012 at 9:35am

Biology
- "problems that result as blood alcohol concentration increases" Basically, I'm supposed to put what page number the answer is on, and then what the answer is. I have the page number, yet the answer is no where on the page to be found. I've read it over ...
Tuesday, May 22, 2012 at 5:16am

english
I wrote an essay because i'm apply to get into the honor's program. I'm supposed to write about who i was, who i am now, and who I would like to be. I would appreciate it if I got some feed back along with grammar correction. Is my essay even close to being okay or...
Tuesday, May 22, 2012 at 1:12am

BIOLOGY
which nucleotide is always paired with adeine in a dna molecule
Wednesday, May 16, 2012 at 10:24pm

Biology for sister
my sister need help with biology homework she need to describe ecology of amoeba, paramecium, and diatom. telling where it be found. how it meet it nutritional needs using and explaining with the right terminology like autotrphic, photosyntetic, parasitic, etc. what impact it ...
Monday, May 14, 2012 at 6:29pm

Biology
A population of hawks increases in size by 5.5% each year. In how many years will this population quadruple?
Monday, May 14, 2012 at 5:56pm

Biology
What is a good question I can ask my class about Pulmonary Embolism that would create a good discussion?
Sunday, May 13, 2012 at 6:25pm

science-biology
can anyone help me by finding which enzymes are present in carbohydrates? is it salivary amylase(tyalin)
Saturday, May 12, 2012 at 1:39am

biology
How geographic isolation of a common ancestral species of finches has led to the development of 14 different species of finches in the Galapagos Islands?
Wednesday, May 9, 2012 at 1:27pm

biology
Most birth control measures are designed for and marketed to women. Why do you think this is the case? Is it just the woman’s responsibility? What could be the advantages of creating more birth control methods for men?
Tuesday, May 8, 2012 at 1:45am

biology
Some young men were told by their mothers not to wear tight briefs, as this could make them sterile and infertile. Explain how wearing tight briefs could do this. What alternative methods could you implement to avoid sterility and infertility, and why?
Tuesday, May 8, 2012 at 1:44am

biology
Both of Susie’s parents died from breast cancer. Susie tested positive for the BRCA1 gene, the BRCA2 gene, and HPV; however, she does not have any cancer cells in her body or any signs or symptoms. Susie just called you and told you that she has decided to undergo a ...
Tuesday, May 8, 2012 at 1:36am

biology
What reactions go on in your brain when you fall asleep? If you could give me a website that goes INDEPTH as to what happens in the brain when you fall asleep that would be great!
Monday, May 7, 2012 at 7:44pm

biology
Can change in heart rate due to exercise be expressed in percentage difference to compare the rest rate and the exercise rate? why is it a good/bad thing to do?
Monday, May 7, 2012 at 10:50am

biology
The Cell membrane contains A) a double layer of fatty acid tails and phosphate heads B) cholesterol C) protein channels or pores D) a and b E A,B, and C
Thursday, May 3, 2012 at 8:01pm

Biology
In pea plants the colour of the peas is genetically controlled. Each pea represents a separate fertilisation. Smooth texture (S) is dominant to wrinkly (s) and green (G) colour is dominant to yellow (g). Following a breeding experiment with pea plants, the following ratio of ...
Wednesday, May 2, 2012 at 7:53am

Biology
Another brain teaser I can't get: What are Mr. Rahn's favorite states" Hint: "it matters"
Tuesday, May 1, 2012 at 11:37am

Biology
I can't figure out these brain teasers: i.e.point act char er ILL GET IT
Tuesday, May 1, 2012 at 11:33am

Biology
What are the similarities of the evolution of birds on hawaiian islands and the finches on the Galapagos?
Monday, April 30, 2012 at 8:16pm

Biology
What are the similarities of the evolution of birds on hawaiian islands and the finches on the Galapagos?
Monday, April 30, 2012 at 6:56pm

biology
Initially, how do skeletal muscles (the type of muscle attached to bones) make ATP? write the reaction for this procss (Crp +ADP => Cr + ATP) as a 'coupled' reaction, identifying the exergonic and endergonic reactions. what would this type of ATP production be called?
Sunday, April 29, 2012 at 7:00pm

biology
Initially, how do skeletal muscles (the type of muscle attached to bones) make ATP? write the reaction for this procss (Crp +ADP => Cr + ATP) as a 'coupled' reaction, identifying the exergonic and endergonic reactions.
Sunday, April 29, 2012 at 6:58pm

biology
how does the REM help create a sleep signal sent from the pons in the brain that helps to stop motor neurons in the spine when a person sleeps. Please help me! I am looking for detailed information right down to the certain proteins and such! I have searched everywhere and ...
Sunday, April 29, 2012 at 3:01pm

biology
In some dogs, long hair (L) is dominat over short hair (l), and wavy hair (W) is dominant over straight hair(w). Draw a cross between a dog that is homozygous for long hair and straight hair with a dog that is homozygous for short hair and wavy hair. What would the genotype ...
Sunday, April 29, 2012 at 2:14pm

Biology
True or false? (if false, replace word in *here*) 1) The random changes of allele frequencies associated with genetic drift frequently lead to a *gain* in genetic diverse. 2) *sexual selection* helps maintain the Hb^a/Hb^s heterozygous conditions in humans. 3) bottleneck and ...
Sunday, April 29, 2012 at 12:38pm

biology
1,Why do autotrophs always occupy the lowest level of ecological pyramids? 2.Explain how the growth of one population can bring about the disappearance of another population during succession? 3. Describe some common plants and animals from a tropical rain forest and a ...
Thursday, April 26, 2012 at 10:19pm

Biology
What is the name of the protein encoded by FGFR3? Thanks for any help!
Thursday, April 26, 2012 at 10:16am

Biology
Is denitrification a biological or chemical process or both? Explain your answer.
Wednesday, April 25, 2012 at 9:35pm

Biology
What is the difference between osmolality and osmolarity?
Wednesday, April 25, 2012 at 7:36pm

Human Biology
Starting with the right ventricle of the heart, describe the function of the heart and the movement of the blood through the pulmonary and systemic circuit. Include a description of gas exchange within the lungs. Now consider what happens if Jake starts smoking. Discuss in ...
Wednesday, April 25, 2012 at 3:41am

Biology
how many properties of blood exists
Wednesday, April 25, 2012 at 12:59am

Biology
Is depolarization positive and repolarization negative?
Tuesday, April 24, 2012 at 1:33am

Biology
What does follicular activity mean?
Monday, April 23, 2012 at 3:02pm

biology
two natural and two man-made causes for sulfur dioxide and nitrogen oxides in the atmospher
Monday, April 23, 2012 at 12:21pm

Biology
I am analyzing a scientific article for my biology class. I am trying to comprehend all of the terms used and am hoping I can gain other's insight as to where this article is flawed and what could have been done to improve it. The article is titled: Effect of age and ...
Monday, April 23, 2012 at 4:56am

Health
Jennifer is fifty-four. Her husband Brian died suddenly in a care crash. Not only was she emotionally distraught, but she found herself in serious financial turmoil. Brian had handled the finances (at least she had thought he had) throughout their 21 year marriage. Upon his ...
Sunday, April 22, 2012 at 11:51pm

Biology
what are some medicines that help someone sleep. and what is teh Chemistry Makeup of those medicines used for sleep and the effect on the brain
Sunday, April 22, 2012 at 7:29pm

biology
How does carbon dioxide emissions from factories, cars and trucks effect global warming? How does methane released from landfills and agriculture effect global warming?
Sunday, April 22, 2012 at 4:20pm

biology
what is the need for vertebrates to evolve from oviparity to viviparity?
Sunday, April 22, 2012 at 8:05am

biology
A farmer buys a land.There were lots of insectivorous plants in it.He was unaware of this,but when he came to know this he decided not to cultivate any crops and return the land.What could be the reason behind this decision?
Sunday, April 22, 2012 at 8:02am

biology
need help with a paper from news article on human biology using scientific method?
Saturday, April 21, 2012 at 3:26pm

biology
What geological process is used to explain how nearly identical animals that cannot swim, are found on continents separated by large oceans? What is the half-life of Uranium 238 and what did we use that radioisotope to date as the oldest item on Earth?
Saturday, April 21, 2012 at 1:29pm

biology
please help me by answering these questions: 1)how many salivary glands are present in our body? 2)what are the names of those salivary glands?
Thursday, April 19, 2012 at 3:19pm

Biology
can anyone help me by defining what is holophytic? please
Thursday, April 19, 2012 at 3:15pm

Biology
A plant's cell wall is made of cellulose fibers. What is the purpose of a plant's cell wall?
Thursday, April 19, 2012 at 1:56pm

biology
how could you set up an experiment to show that the oxygen is coming from the plant and not from the water???
Thursday, April 19, 2012 at 1:11pm

Biology 1010
Which of following is NOT characteristics of all fish? a.gills as respiratory organs b.two-chambered heart c.swim bladder for buoyancy organ d.skin with scales e.presence of jaws
Wednesday, April 18, 2012 at 9:47pm

Binomial Distribution
A biology quiz consists of twelve multiple-choice questions. Eight must be answered correctly to receive a passing grade. If each question has five possible answers, of which only one is correct, what is the probability that a student who guesses at random on each question ...
Wednesday, April 18, 2012 at 8:35pm

College General Biology
A man who is a non-tongue roller (t) marries a woman tongue roller (T) whose father was a non-tongue roller (t) - what would the expected genotype and phenotype percentage for their offspring?
Wednesday, April 18, 2012 at 2:01pm

biology
how can you identify gasses released by plants and animals
Tuesday, April 17, 2012 at 5:10pm

biology
Orange juice is often touted by nutritionists as being an excellent antioxidant. Within an essay response, discuss the following concepts: an antioxidant’s function, free radicals and their effect on the human body, sources of vitamin C, optimal delivery system for ...
Tuesday, April 17, 2012 at 2:07pm

science-biology
I am in 10th grade and can you please help me by defining what is bio-catalysts?
Tuesday, April 17, 2012 at 1:21pm

Biology
GENETICS PRACTICE PROBLEMS Worth 10 points each problem is either right or wrong 1. In humans, assume that brown eyes (B) are dominant over blue eyes (b). A blue eyed man, both of whose parents were brown eyed, marries a brown eyed woman whose father was brown eyed and whose ...
Monday, April 16, 2012 at 10:23pm

genetics/biology
I am having trouble wording this question. Describe the differences in the outcomes for a dihybrid cross ifgenes are: a. completely linked b. completely unlinked c. incompletely linked.
Sunday, April 15, 2012 at 9:50pm

biology
what all do i need to know for GCSE biology my teacher is absolutely rubbish i tried websites but i don't find them helpful thankyou
Sunday, April 15, 2012 at 4:03am

biology
is insomnia the same thing as sleep deprivation. im pretty sure they are different but i just wanted to check. also what in the brain causes insomnia. What parts of the brain create it adn what are the functions?
Saturday, April 14, 2012 at 7:11am

Biology
Having a really hard time following this diagram of the Kreb cycle and I need to answer these questions: 1. Total number of NADH molecules produced for each glucose molecule in the Krebs cycle. A)2 B)4 C)6 D)8 E)10 2. The theoretical yield of ATP from each NADH molecule. A)1 B...
Saturday, April 14, 2012 at 2:59am

biology
What must the systolic blood pressure be valued at for adequate mean arterial pressure if the diastolic pressure is 75? (Assume resting conditions) A. at least 90 B. at least 95 C. at least 100 D. at least 105 E. at least 110 F. at least 115 G. at least 120
Wednesday, April 11, 2012 at 11:02am

biology
Predict the expected change to blood flow should norepi act on arteries of the abdominal cavity? A. Blood flow increases B. Blood flow decreases C. Blood flow stays the same but pressure increases D. Blood flow stays the same but speed decreases E. None of the Above
Wednesday, April 11, 2012 at 11:02am

biology
What part of the brain controls sleep and how does it work. I am looking for a easy to understand answer because when i have searched i do not understand it.
Monday, April 9, 2012 at 2:09pm

biology
why a disease that was once on the decline might re-emerge?
Saturday, April 7, 2012 at 8:31pm

Biology
If agglutination occurs when blood with a certain antigen and blood with the corresponding antibody mix, why is blood type O the universal donor? Wouldn't the A or B antibodies from the O type blood attack the blood antigens of the recipient and cause clotting?
Friday, April 6, 2012 at 6:30pm

biology
1.Describe the pathway of an unfertilized egg as it travels through the female reproductive system
Friday, April 6, 2012 at 9:36am

How get caramel in caramilk bar
my sister have this question for biology how they get caramel into caramilk bar? she think the inject it in there, but she want to know how they do it.
Thursday, April 5, 2012 at 8:17pm

Biology
I'm learning about chromatography and photosynthetic pigments. My question is "how can we measure the light absoptive characteristics for a leaf extract?"
Thursday, April 5, 2012 at 10:58am

biology
why do breathing rates increase in crowded rooms. pls help
Wednesday, April 4, 2012 at 8:13pm

Biology
What does Rf, (or relative to front) mean?
Wednesday, April 4, 2012 at 5:14pm

Biology
If you are looking at a flame burning in a pit, what are the physical and chemical process/changes? Thanks
Tuesday, April 3, 2012 at 12:14pm

Biology
In class, I did an experiment with water and iodine solution in a beaker and also starch in a dialysis tube tied and placed in the beaker. There were discussion questions I couldn't answer surely... please check my answers. 1. a)Use your results to determine the direction ...
Tuesday, April 3, 2012 at 9:00am

biology
Below the human hemoglobin sequence are the first thirty amino acid sequences of several other species’ hemoglobins. Inspect the sequences and answer the following questions: Human) h l t p e e k s a v t a l w g k v n v d e v g g e a l g r l A) ml t a e e k a a v t a f w ...
Sunday, April 1, 2012 at 7:18pm

URGENT Spanish help please.
ok in the example it shows: ¿Comprendes espanol? Si, lo comprende ok for this question it's asking 1) do you and your siblings practice tennis my response: no, no los practicamos.. it said i was wrong how would I correct that 2) it asked does your mother teach ...
Sunday, April 1, 2012 at 4:09pm

biology
I have the fetal pig test on muscles in AP biology class coming up soon. And I was wondering if anyone knows any good online sites where thye give pictures and i can practice labeling the muscles on the pig.. thanks
Sunday, April 1, 2012 at 2:22pm

Biology
I estimated a possum population to be 260. It was later found that the possums rather enjoyed being trapped because of the tasty food used as bait. Does this mean the population estimate may be too high or too low?
Thursday, March 29, 2012 at 8:15am

Biology
Where is the Barnacle zone located in a rock platform ecosystem(Upper littoral, upper mid-littoral, lower mid-littoral or lower littoral zone)?
Thursday, March 29, 2012 at 7:25am

AP Biology
In 1918 a particularly virulent strain of influenza (an RNA virus) wiped out millions of health humans in the prime of their lives. Epidemiologists fear that such a super bug could revisit us in the future. And thus there was quest to find samples of the virus, and make a ...
Wednesday, March 28, 2012 at 8:39pm

Biology
do all specific proteins have the same function in different living organisms?
Wednesday, March 28, 2012 at 6:29pm

biology 2 ap
All living organisms share all of the following features in common except A. carry out metabolism B. transfer energy with ATP C. encode hereditary information in DNA D. are composed of one or more cells E. containing organelles
Wednesday, March 28, 2012 at 8:41am

biology
sir, there was a question in my biology test that required us to draw a graph of concentration of sucrose solution against rate of reaction. so how do I plot the graph? If i follow the question's requirement, i have to put the concentration of sucrose solution as the y-...
Wednesday, March 28, 2012 at 3:30am

biology
sir, there was a question in my biology test that required us to draw a graph of concentration of sucrose solution against rate of reaction. so how do I plot the graph? If i follow the question's requirement, i have to put the concentration of sucrose solution as the y-...
Wednesday, March 28, 2012 at 3:29am

Biology
List two ways bacteria and blue-green bacteria differ. Any help would be appreciated. :)
Tuesday, March 27, 2012 at 11:07am

Biology
What are the risk assessment if you went to a rock platform to compare the abundance of animal populations there?
Tuesday, March 27, 2012 at 2:27am

Biology
The main function of the stomach is to soften the food so that the food can pass through the body quickly. Is this True or False?
Monday, March 26, 2012 at 9:04am

Biology
Suppose that black hamsters were found to be 70% of the population and the gray hamsters 30% of the population. Calculate the percentage of BB, Bb, and bb hamsters in the next generation. - I don't know how to calculate the percentage of the genotypes.
Monday, March 26, 2012 at 12:09am

Biology
When you measure your heart rate for less than 20 seconds , why is it less possible for the results to be reliable? When you measure your heart rate for more than 20 seconds, why is it still less possible for the results to be reliable?
Sunday, March 25, 2012 at 5:03pm

biology
a class of pupils obtained results on a bar chart during a seashore investigation. they sampled the numbers of different seaweeds found in 0.25 m2 from the top shore (upper shore) to lower shore and found average percentage cover for each seaweed. describe how the pupils would...
Sunday, March 25, 2012 at 3:35pm

Biology
If you cross 1 inflated pea pod with a constricted pea pod and all of the offspring turn out inflated,is inflated dominant or recessive?
Saturday, March 24, 2012 at 8:10pm

Biology
What are gametes produced from the humanbody?
Saturday, March 24, 2012 at 8:07pm

Biology
If nonessential amino acids are missing from the diet, can essential amino acids be substituted in the protein? I would appreciate some help with this one-thank you
Saturday, March 24, 2012 at 3:31pm

biology
1. what is the function of the menstrual cycle? 2. Trace the path of a sperm from the male body? 3. Examine the two small lungs found on either side of the heart? Describe their size and function?
Friday, March 23, 2012 at 9:56pm

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