Thursday
May 26, 2016

Homework Help: Science: Biology

Recent Homework Questions About Biology

Human and social biology
where a disease is always present, why are preventitive measures better for the whole population than treatment?
Monday, September 29, 2014 by Malini

Human and social biology
how does an infection disease differ from a deficiency disease?
Monday, September 29, 2014 by Malini

Human and social biology
define the terms (a) Conservation and (b) Pollution and explain one activity of humans associated with each
Monday, September 29, 2014 by Malini

Human and social biology
Briefly outline how four important social problems may be reduced by the knowledge of biology
Monday, September 29, 2014 by Malini

biology
Which of the follow comparisons would be an inaccurate analogy between prokaryotic cells and eukaryotic cells? A - A eukaryotic cell is like a college campus was a prokaryotic cell is like a one-room schoolhouse B - A eukaryotic cell is like a flip phone while a prokaryotic ...
Sunday, September 28, 2014 by Sue

Biology
1. Describe 2 methods of viral infection 2. How can a virus be helpful to its host? Thank you:)
Saturday, September 27, 2014 by Nicki

Biology
What is the water potential of a 5.7 L water in which 2.1 moles of NaCl has been dissolved at 30 degrees celcisus? Help please? Can you show work as well? It'll be greatly appreciated. Thanks in advance.
Saturday, September 27, 2014 by Ali

Biology
Why does biomass decrease as we move up the biomass pyramid?
Saturday, September 27, 2014 by A

biology
Why is the term, "evolution" applied to Charles Darwin even today? and Why and how does it apply to a cultural anthropology? -Thank you
Friday, September 26, 2014 by Anonymous

biology
The following statement is false. Select the rewording that makes the statement true. Dalton discovered electrons inside of atoms by using thermal energy. Thompson discovered electrons inside of atoms by using cathode rays. Thompson discovered electrons inside of atoms by ...
Friday, September 26, 2014 by Angela

Biology question plz
Which of the following depends on bacteria? conversion of dead organic matter to fossil fuel photosynthesis dissolution nitrogen fixation I think its A but I feel it could also be D, could you plz help?
Friday, September 26, 2014 by Niki

Biology
How are RNA bases freed up during transcription to form base pairs?
Wednesday, September 24, 2014 by Anonymous

Biology
During transcription, when RNA nucleotides form base pairs with the DNA template, does this mean that RNA nucleotides and DNA nucleotides pair up?
Wednesday, September 24, 2014 by Anonymous

Biology
If Ms. Brown were serving as a donor, what ABO blood types could receive her blood safely? Ms. Brown has A+ blood type
Monday, September 22, 2014 by Milly

Biology
Explain how sunlight is the primary source of energy for your own life? Please help!
Monday, September 22, 2014 by Skye

Biology Help!!!
Describe the relationship between ATP and ADP and the importance of this relationship within a cell. My answer: ATP stands for Adenosine Tri-Phosphate, and is the energy used by an organism in its daily operations. It consists of an adenosine molecule and three inorganic ...
Monday, September 22, 2014 by School Lover

Biology
Why is it necessary to match the donors blood and the recipients blood before a transfusion is given
Sunday, September 21, 2014 by Emily

Biology
What ABO antigens are present on the red blood cells of Mr. Green's blood? Mr. Green Anti A serum - no clump Anti B serum - clump Anti Rh serum - no clump
Saturday, September 20, 2014 by cate

Biology
What is the role of Helicase in transcription? My textbook says RNA polymerase unzips the DNA during this process, so what does Helicase do?
Friday, September 19, 2014 by Anonymous

biology
How do changes in the nucleotide sequence lead to mutations and how could this affect the primary structure of proteins?
Thursday, September 18, 2014 by lou

Biology
How do you calculate the magnification on a microscope? Please help, I do not have any multiple choice to go by, I have to write a response!
Thursday, September 18, 2014 by Sky

Biology
How do you calculate the magnification on a microscope? Please help, I do not have any multiple choice to go by, I have to write a response!
Thursday, September 18, 2014 by Skye

Biology
A patient has type AB blood. If they received a transfusion of type B blood, predict and explain what would happen
Thursday, September 18, 2014 by Emily

BIOLOGY
What are the possible gametes produced by the individual SsYy?
Thursday, September 18, 2014 by CHEYENNE

Biology
A patient has type AB blood. If they received a transfusion of type B blood, predict and explain what would happen
Thursday, September 18, 2014 by Jannette

biology
A true breeding brown mouse is mated with a true-breeding white mouse and all their offspring are brown. If two of these brown offspring are mated, what percentage of the F1 and F2 generations will be brown?
Thursday, September 18, 2014 by bio

biology
Which of the following would NOT likely have occurred without the evolution of photosynthetic organisms? A. Life would be much less diverse. B. Most organisms would have gone extinct due to the increase in oxygen. C. Mitochondria-containing cells would not have evolved. D. ...
Tuesday, September 16, 2014 by Mike

Biology
Put the following in the correct order. Report results Determine if hypothesis is true Do background research Construct a hypothesis Collect data Analyze results and draw conclusions Design and implement an experiment State the problem / ask questions Correct Order State the ...
Tuesday, September 16, 2014 by Please help

Biology
Explain the role of a hypothesis in a scientific investigation
Tuesday, September 16, 2014 by Sara

Biology
In terms of energy, what is the difference between glucose and ATP?
Tuesday, September 16, 2014 by Sara

Biology
The function of a protein is determined by its ? Answer: shape The shape of a protein is determined by the ? of its ? ? First answer : ? Second two answers : primary structure
Monday, September 15, 2014 by Please help

Biology
How are the hydrogen bonds broken during DNA replication? Is it done by the DNA polymerases?
Monday, September 15, 2014 by Anonymous

chemistry
A Biology student wants to know if Mountain Dew will make plants grow faster than water. As a Chemistry student, you have agreed to assist in the planning of the experiment to make sure the student designs a valid experiment. 1) What is the experimental question? 2) What is ...
Monday, September 15, 2014 by eer

Biology
Are a replication fork and an origin of replication the same thing?
Monday, September 15, 2014 by Anonymous

Biology
Discribe in details how archaeopteryz sp.was fossilized?
Sunday, September 14, 2014 by Omega

Biology
Describe how you would prepare 90 mL of a 5 mM NaCl solution from a 2 M NaCl stock 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 units of measurement.
Sunday, September 14, 2014 by Ki

Biology
A student wishes to prepare 300 mL of 0.25 M sucrose. He puts 25.7 g of sucrose in a beaker and then adds 300 mL of dH2O. The total volume of the solution after the sucrose has been dissolved is 330 mL. a) What did he do wrong when preparing his solution? b) What is the actual...
Sunday, September 14, 2014 by Ki

Biology
A company seeks to develop an herbicide that kills plants by directly interfering (at the cellular level) with plants’ ability to maintain turgor pressure. An herbicide could accomplish this by disrupting the membrane of _____.
Friday, September 12, 2014 by Sabina

Biology
A hydrogen ion is the same as a proton true or fasle
Friday, September 12, 2014 by anonymous

Biology
Breaking the hydrogen bond between two water molecules is called dissociation. true or false
Friday, September 12, 2014 by anonymous

Biology
What is a reactant that binds to a catalyst? Answer: a catalyst An enzyme is a kind of ? Answer: a substrate
Thursday, September 11, 2014 by Please help

Biology
What is a reactant that binds to a catalyst? Answer: a catalyst An enzyme is a kind of what? Answer: a substrate
Thursday, September 11, 2014 by Please help

Science - Please Check My Four Answers
Please help me with the following questions: 1. Which is usually the best way to present or communicate inferred data? A. in a bar graph B. in a data table C. in a simple diagram D. in a written paragraph I know the answer isn't C or D(I got C wrong), but now I think the ...
Thursday, September 11, 2014 by Brady

Science - Please Check My Answers
Please help me with the following: Which is usually the best way to present or communicate inferred data? A. in a bar graph B. in a data table C. in a simple diagram D. in a written paragraph I know the answer isn't C or D(I got C wrong), but now I think the answer is B. ...
Thursday, September 11, 2014 by Brady

biology
why do potatoes and onions have reducing sugar present
Thursday, September 11, 2014 by dmoses

biology
why do potatoes and onions have reducing sugar present.
Thursday, September 11, 2014 by dmoses

biology
jordan is doing a science fair project on the effect of music on the growth of tomatoes. he has two tomato plants, plant A and B, that he grows in a window and gives the same amount of water. plant A is exposed to classical music using headphones attached to the soil. ...
Wednesday, September 10, 2014 by rose fuentes

Biology
For each of these properties, give an example of how water’s properties affect life on earth. Able to dissolve salt or sugar • unable to dissolve oil • high surface tension (cohesion) • capillary action (cohesion + adhesion) • liquid more dense than ...
Tuesday, September 9, 2014 by Anonymous

Science/Biology
In DNA bases, CG is one pair and AT is another pair because the double ring bonds with the single ring. Why can't Guanine bond with Thymine?
Tuesday, September 9, 2014 by Anonymous

Biology
In DNA bases, CG is one pair and AT is another pair because the double ring bonds with the single ring. Why can't Guanine bond with Thymine?
Tuesday, September 9, 2014 by Anonymous

Biology
17.Which one of the following statements is true regarding voluntary and involuntary responses? A.Voluntary responses control the activity of glands. B.Involuntary responses are part of the autonomic system. C.Voluntary responses originate in the sensory receptors. D....
Tuesday, September 9, 2014 by Anonymous

Biology please help!
Is respiratory control more sensitive to small changes in arterial PO2 or in arterial PCO2
Monday, September 8, 2014 by Dan

Biology
Is respiratory control more sensitive to small changes in arterial PO2 or in arterial PCO2?
Monday, September 8, 2014 by Rachel

Biology - very urgent
Is respiratory control more sensitive to small changes in arterial PO2 or in arterial PCO2?
Monday, September 8, 2014 by Rachel

Biology
What happens to arterial PO2, PCO2, and H+ concentration during moderate excercise? How and why does this stimulate an increase in breathing rate?
Monday, September 8, 2014 by Krystal

Biology
Is respiratory control sensitive to small changes in arterial PO2 or in arterial PCO2?
Monday, September 8, 2014 by Greg

Biology
I have tried to look this up but can't find it... The basal metabolism rate can be measured by calculating the amounts of _______________ and ______________. (1 point) nitrogen and carbon dioxide nitrogen and oxygen oxygen and carbon dioxide - my guess oxygen and methane
Monday, September 8, 2014 by Sandra

Biology Help
Enzymes: a. increase the amount of energy release in a reaction b. decrease the amount of energy release in a reaction c. catalyze only redox reactions d. reduce the activation energy needed to for a reaction I think its d. or a. Help Please
Monday, September 8, 2014 by Stephine

biology
Q: Analyze an experiment in which one group of plants receive extra fertilizer and another group receives extra water. Is the experiment controlled or uncontrolled? Support your answer. My answer: The experiment is uncontrolled because there is no experiment used for ...
Sunday, September 7, 2014 by losa

Gr 11 Biology
if you were a snoker, what lung volumes (tidal volume, expiratory reserve volume or vital capacity) would be most affected? i think the answer would be the expiratory reserve volume
Sunday, September 7, 2014 by kathy

Gr 11 Biology
Which person do you think would be more physically fit: a) an individual with a normal expiratory reserve volume and high vital capacity OR B)an individual with a high expiratory reserve volume and normal vital capacity
Sunday, September 7, 2014 by kathy

Biology
How is type 1 diabetes mellitus similar to starvation?
Friday, September 5, 2014 by Moses

biology
how does light affect anthocyanins?
Friday, September 5, 2014 by haley

biology
How could you explain this statement "An ecosystem is constantly changing ,yet it remains the same."
Wednesday, September 3, 2014 by Sam

SCIENCE:BIOLOGY>
1. How many seconds do you spend in school during the week (6.5 hours/day)? 2. How many micrograms are in 12 dekagrams? 3. How many centimeters are in 5 kilometers? 4. 3.25 liters are equal to how many kiloliters? 5. how man meters are in 0.65 hectometers? 6. How many grams ...
Wednesday, September 3, 2014 by Julia

biology
Suppose that a person inherited an allele of HGD from their father that had the proline 230 to serine mutation and also inherited an allele of HGD from their mother that had the glutamic acid 42 to alanine mutation. What would be that individual’s phenotype? Choose the ...
Wednesday, September 3, 2014 by aleks

biology
You have a stock solution that is 350g/L . You perform a 9-fold serial dilution four times. What concentrations will you have in each of your diluted tubes in g/L? (Separate your answers with a comma.)
Tuesday, September 2, 2014 by Tsion

Biology
PCSK9, a protease that regulates the level of LDL receptors, is a new target for lowering circulating levels of LDL. Excess PCSK9 leads to a decrease in LDL receptor levels. Which one of the following tools would you use in mice to model a potential therapy for humans with ...
Tuesday, September 2, 2014 by alex

Biology
What are two traits of an information source that may indicate the information given is scientifically unreliable? Answer: peer review does not necessarily indicate that the other field expert reviews are in agreement with conclusions of the original writer, and a well ...
Thursday, August 28, 2014 by Please Help

Biology
What are two traits of an information source that may indicate the information given is scientifically unreliable? Answer: peer review does not necessarily indicate that the other field expert reviews are in agreement with conclusions of the original writer, and a well ...
Wednesday, August 27, 2014 by Please Help

Biology
In a controlled experiment, a scientist is studying how long it takes pea plants growing in different soil types to develop flower buds. What is the manipulated independent variable? a) type of soil used b) number of flower buds produced c) how long it takes for flower buds to...
Wednesday, August 27, 2014 by Anonymous

Biology
Why are most factors held constant in a scientific experiment? Answer: the only part of an experiment that ever changes is the independent variable.
Wednesday, August 27, 2014 by Please Help

Biology
What is a written observation called? Answer: hypothesis
Wednesday, August 27, 2014 by Please Help

Biology
Is yeast living, nonliving, or dead? Explain why.
Tuesday, August 26, 2014 by Raven

Biology
Compare and contrast the structure and function of a compound light microscope and a scanning electron microscope. Be sure to discuss the structure and function of each as well as the function and usefulness of each when examining a specimen. Please help! I just need help ...
Tuesday, August 26, 2014 by School Lover

Biology
How would you describe the role that observations and inferences play in the scientific process?
Monday, August 25, 2014 by Catarina

biology
anonyms
Monday, August 25, 2014 by Anonymous

biology
Explain how both nucleic acids and proteins are polymers.Be sure to describe the monomers that make up the polymers.
Thursday, August 21, 2014 by Anonymous

biology
You want to design an experiment to test if a bacteria affects a transmembrane protein. What types of controls should you use to eliminate effects of confounding variables?
Thursday, August 21, 2014 by Tim

biology
Is this correct? 2 examples of reproduction is a starfish and a rose bush....
Tuesday, August 19, 2014 by Anonymous

biology
What are two examples of cellular organization.. Plz help Google sucks 😂
Tuesday, August 19, 2014 by I NEED HEEELLPPP

Science
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 his career? A.biomedical science and meteorology B.oceanography and paleontology C.chemistry and biology D.physics and computer science ...
Tuesday, August 19, 2014 by Gwen

Science
Which branches of science do pharmacists need knowledge of to do their job properly? A.physics and chemistry B.biology and chemistry C.chemistry and geology D.physics and computer science Is the answer B?
Tuesday, August 19, 2014 by Gwen

Biology
You are testing the injection of a new chemical on mice to see if it can shrink tumors. To properly administer the chemical, it must be dissolved in water with ascorbic acid (vitamin C) and injected into the middle of a tumor. As a positive control, you plan to similarly ...
Tuesday, August 19, 2014 by Jenny

Biology
While performing an experiment, a positive control group is given a treatment that was used one time previously in another experiment. This time, however, the positive control does not give the expected result that you received last time. Which of the following is a likely ...
Tuesday, August 19, 2014 by Jenny

Biology
You want to know if a new species of bacteria we identified (E. glados) has resistance to the antibiotic valinomycin. You make “plates” of LB-agar to culture bacteria on. Some of these are regular LB-agar plates that any bacteria will grow on and others have ...
Monday, August 18, 2014 by Jenny

Biology
A "tree of life" explains: a. how organisms are related to each other b. how organisms differ from each other c. the lineages of various organisms. d. All of the above
Monday, August 18, 2014 by Sara

Biology
Reptiles do not live in the Arctic; however, some birds do, even though they evolved from reptiles. In your own words, offer an explanation for this fact. Include information on the metabolic differences between the two groups' bodies, as well as what effect their ...
Monday, August 18, 2014 by Fawn

science(biology)
state three secondary functions of roots,stems and leaves
Sunday, August 17, 2014 by Elvis

BIOLOGY
A reference calls for the use of "one litre of 0.1 molar acetate buffer pH 5.2” Calculate the amounts of sodium acetate and acetic acid required to make up this buffer, given that for acetic acid Ka = 1.8 x 10-5
Saturday, August 16, 2014 by SAMUEL

biology
during the downpour in a village,the rainwater carried away excess of nitrogenous and other compounds present in the soil to a pond.how will they affect the growth of algae and phyloplankton in the pond?
Thursday, August 14, 2014 by Tina

Biology: Genetics
18.Which of these is trueof meiosis? A. n → 2n B. n → n C. 2n → n D. 2n → 2n Is it C.?
Wednesday, August 13, 2014 by Anonymous

Biology: Genetics
18.Which of these is true of meiosis? A. n → 2n B. n → n C. 2n → n D. 2n → 2n Is C. the right aswer?
Wednesday, August 13, 2014 by Anonymous

Biology
Diagram the genotypes of the P1 pea plants from the previous four questions by placing the correct answer on its correct place.
Tuesday, August 12, 2014 by Sabrina

math
In a high school, 30% of student take physics, 15% of students take chemistry. The rest of students are taking biology. What is minimum student taking biology? A.7 B.8 C.9 D.10 E.11
Sunday, August 10, 2014 by rabie

Biology
Suppose that a repressor regulated the expression of the galA gene. Which of the parenthesis would be correct? (((supposing hypothetical bacterium gene: "galA" – encodes an enzyme that is required for cells to digest the sugar galactose/and/ "argB" &#...
Saturday, August 9, 2014 by Janice

Biology
Should the point (0,0) be plotted on this graph? Average Temperatures in Degrees F. (1)Jan 52 (2)Feb 57 (3)Mar 65 (4)Apr 73 (5)May 80 (6)June 87 (7)July 89 (8)Aug 88 (9)Sept 82 (10)Oct 73 (11)Nov 63 (12)Dec 55 This data represents a repeating cycle. Should the point (0,0) be ...
Thursday, August 7, 2014 by Pratima

molecular biology
To confirm that the recombinant plasmids obtained were exactly what you wanted, you need to determine the DNA sequence of the PCR products found in several of the recombinant plasmids. To do this, you use the primer 5'-CACG-3'. You carry out a set of four dideoxy ...
Thursday, August 7, 2014 by bio

biology
If a microscope has a 40× objective lens in place and a 15× eyepiece lens, the magnification of the system under these conditions is
Wednesday, August 6, 2014 by oihln

biology
doing a biology project and they want us to figure out how long it takes to cook 6 different foods at 5 different temperatures and gather 30 seperate data points. They want us to identify an x(independent) and a y(dependent) variable that can be recorded on a table. Would x be...
Wednesday, August 6, 2014 by ava

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Homework Help: Science