Monday
July 25, 2016

Homework Help: Science: Biology

Recent Homework Questions About Biology

Biology (High school science)
If non-nucleated cells of meristematic tissue are used for tissue culture, then growth rate will be : a) High b) Average c) Very low d) Growth may not take place. Please help!
Wednesday, March 30, 2016 by Shreya

Biology
What is considered the most critical function of erythrocytes? the transport of oxygen the transport of carbon dioxide buffering against changes in blood pH assisting in clot formation All of the answers are considered the most critical functions of erythrocytes.
Tuesday, March 29, 2016 by Anonymous

Biology
The normal flow of blood through the heart would be right atrium → right ventricle → lungs → left atrium → left ventricle. right atrium → left atrium → left ventricle → aorta. lungs → right atrium → right ventricle → ...
Tuesday, March 29, 2016 by Anonymous

Biology
Systolic blood pressure is the pressure in veins. pressure in major arteries caused by the contraction of the left ventricle. pressure in major arteries when the heart is relaxing. difference in pressure that causes the pulse. hard im thinking its B
Tuesday, March 29, 2016 by Anonymous

Biology
The major vein that delivers blood from the lungs to the heart is the femoral vein. inferior vena cava. superior vena cava. pulmonary vein. jugular vein.
Tuesday, March 29, 2016 by Anonymous

Biology Honors
Hardy-Weinberg: Within a population of birds, 21 percent of them display the recessive phenotype for a particular trait. What are the allele frequencies for this trait assuming the population is in genetic equilibrium? I'm absolutely confused on this ;l
Sunday, March 27, 2016 by Edward

Biology (Please Help!)
When we spin around in one place and stop, we feel as though we are still moving. This feeling is caused by continued Select one: A. transmission of nerve impulses from cochlea to auditory nerve B. movement of fluid against cochlea C. vibrations of tympanum D. movement of ...
Wednesday, March 23, 2016 by Anonymous

Biology
When we spin around in one place and stop, we feel as though we are still moving. This feeling is caused by continued Select one: A. transmission of nerve impulses from cochlea to auditory nerve B. movement of fluid against cochlea C. vibrations of tympanum D. movement of ...
Wednesday, March 23, 2016 by Anonymous

biology
a)what are the main similarities b/n cholera and typhoid? b)what are the main d/ce b/n cholera and typhoid? c)how can the spread of cholera and typhoid be prevented as far as possible?
Tuesday, March 22, 2016 by yaekob

Biology
Treehoppers have either purple, or green, or white skin. Other geneticists have determined that: (1) whenever one white treehopper is mated with another white treehopper all the progeny are white. (2) whenever two pure bred purple treehoppers are mated all their progeny are ...
Monday, March 21, 2016 by Jared

biology
When chromatids separate during anaphase two (in meiosis), do all the maternal and paternal chromatids stay together or do they randomly separate into the daughter cells?
Monday, March 21, 2016 by Larry

Biology i need your help
list the risks of calcium(Ca) for our health.
Monday, March 21, 2016 by Yaekob

Science
Please Check! 1. How does nanotechnology help engineers make products for the future? a. By changing a materials atomic structure, it can be made from elements that are easier to obtain.*** b. By changing a material's atomic structure, its physical properties can also be ...
Friday, March 18, 2016 by SpitFireRedHead

Science Please Check
Please Check 1. How does nanotechnology help engineers make products for the future? a. By changing a materials atomic structure, it can be made from elements that are easier to obtain.*** b. By changing a material's atomic structure, its physical properties can also be ...
Friday, March 18, 2016 by Blair

biology assignment
How are cohesion and adhesion properties of water linked to photosynthesis
Thursday, March 17, 2016 by salz

biology assignment
How are cohesion and adhesion properties of water linked to photosynthesis Assignment: maximum of 3 pages Introduction, main body, conclusion, reference (havard referencing system)
Thursday, March 17, 2016 by salz

biology
Muscle tissue that is under voluntary control and contains cells with many nuclei is cardiac. skeletal. smooth. cartilage. squamous.
Wednesday, March 16, 2016 by Anonymous

Biology
Which tissue type forms glands? connective epithelial muscle nervous glandular help? hard
Wednesday, March 16, 2016 by Anonymous

Language arts, all right?
(During the break between classes, LEE approaches CHANDRA, who is getting a book out of her locker.) LEE: Hi, Chandra. CHANDRA: Hi, Lee. Are you getting used to this new school yet? LEE (hesitantly): Well, I’m finding my classes all right, but… (whispers) Is it ...
Monday, March 14, 2016 by Cameron

biology
1.intermediate waters is caused by? 2.deep water currents are important because? 3. water that sinks are? 4.water that rises are?
Monday, March 14, 2016 by anonymous

Biology
Number of ATP by oxidative phosphorylation from a 24 carbon fatty acid? I have 96 because fatty acids go to CoA (2ATP) and the Krebs (22ATP). Glucose has 6C and so you add 2+22ATP and multiply by 4 to get 96. Is this right? If not, how do I figure this out?
Monday, March 14, 2016 by Anonymous

Biology
How much ATP energy would you get from a tripeptide that, upon hydrolysis and deamination, makes two acetyl CoA and one pyruvate molecule and undergo aerobic respiration?
Monday, March 14, 2016 by Anonymous

biology
what type of cell recognizes cells that have been infected by viruses because the infected cells have viral proteins on their surfaces?
Sunday, March 13, 2016 by katie

Biology
Compare and contrast between these two plant polysaccharides : starch and cellulose.
Sunday, March 13, 2016 by Petrus

Biology
How do I set up a trihybrid punnett square if the cross is TTRRPp x TtRrPp?
Saturday, March 12, 2016 by Liz

Biology
Why do we use dna primer for PCR but RNA primer for dna polymerase in cells
Friday, March 11, 2016 by asdasdfasdf

biology
It was observed that due to poor nourishment the average weight of beetles reduced. If this continues in a number of generation, will this feature direct evolution? Explain
Thursday, March 10, 2016 by pankaj

Biology
Multicellular organisms use a variety of communication methods to coordinate cell function. Choose ONE of the following examples below and describe the cell-to-cell communication that occurs, and then describe the types of responses that result from this communication. ...
Thursday, March 10, 2016 by nan

Biology
Define a protein kinase and explain its role in a signal transduction pathway. Then describe what can happen if an organism's cells experience abnormal protein kinase activity.
Thursday, March 10, 2016 by nan

Biology
Describe the G protein receptor system and the tyrosine-kinase receptor system. Explain how these two systems are similar and how these two systems are different, in terms of structure and function please.
Thursday, March 10, 2016 by nan

Biology
The Hershey-Chase experiment proved that DNA was the hereditary material because a- radioactive phosphorus in viral proteins was shown not to enter bacterial cells. b- radioactive phosphorus in viral DNA was shown to enter bacterial cells. c- radioactive sulfur in viral ...
Wednesday, March 9, 2016 by Steve

Biology
I have a research article about the early advancement of laying times for Flycatchers, a bird species through Europe and Asia. My variables are: - Annual temperature recordings in each study site - The species, flycatcher - Clutch size of the flycatchers - The location of each...
Monday, March 7, 2016 by Kevin

Biology - Evolution
Suppose you grabbed ten seeds from the large number of seeds that were present and planted them in a garden. During the summer you harvest 100 bean seeds from these 10 groups of plants? Would you wee the same distribution of seed size as when you first planted the seeds? ...
Monday, March 7, 2016 by Jen

Biology
I need help creating a pedigree using this description: Lily is 28 years old. She has a younger brother Nick who has hemophilia and a younger sister, Sharon. Lily's parents are George and Maureen. George has a older brother named Edward and a older sister named Rachel. ...
Sunday, March 6, 2016 by Amy

Biology
How do ATP and ADP function in capturing and releasing energy?
Saturday, March 5, 2016 by Halle

Biology
Describe what you observed in the hands-on animal behavior lab. What conclusions did you draw from the data? Explain your answer.
Friday, March 4, 2016 by nan

Biology
Describe a specific type of chemical or audible communication used by animals to respond to an external stimulus and the resulting change in behavior. Explain how this type of communication may relate to natural selection within a population.
Friday, March 4, 2016 by nan

Biology
In one signaling pathway, cyclic AMP (or cAMP) acts as a second messenger in a series of reactions that result in the relaxation of smooth muscle cells in artery walls. Define cyclic AMP and describe the role and properties of a second messenger. Then explain how a medication ...
Friday, March 4, 2016 by nan

Biology
Multicellular organisms use a variety of communication methods to coordinate cell function. Choose ONE of the following examples below and describe the cell-to-cell communication that occurs, and then describe the types of responses that result from this communication. ...
Friday, March 4, 2016 by nan

Biology
Define a protein kinase and explain its role in a signal transduction pathway. Then describe what can happen if an organism's cells experience abnormal protein kinase activity.
Friday, March 4, 2016 by nan

Biology
Explain how cell membranes and their components participate in intercellular signaling. Give a specific example of cell membrane involvement in one particular type of cellular signaling.
Friday, March 4, 2016 by nan

Biology
Describe the G protein receptor system and the tyrosine-kinase receptor system. Explain how these two systems are similar and how these two systems are different, in terms of structure and function please.
Friday, March 4, 2016 by nan

Biology
The single defining characteristic of the mammals is the presence of? mammary glands. a placenta. hair. warm blood. a skul
Thursday, March 3, 2016 by Anonymous

Biology
1.,you drink salty beverages (clams to) and eat pretzels all day. At the end of the day your weight is way up. Why? I think it has something to do with the fact that our cells shrink in size ? I have no clue? 2. Athletes drink Gatorade . Why? Given the description, tell the ...
Thursday, March 3, 2016 by Maya

Biology
1.,you drink salty beverages (clams to) and eat pretzels all day. At the end of the day your weight is way up. Why? I think it has something to do with the fact that our cells shrink in size ? I have no clue? 2. Athletes drink Gatorade . Why? Given the description, tell the ...
Wednesday, March 2, 2016 by Maya

Biology
What can happen to our virtual finch population if the weather changes between wet and dry conditions too rapidly? A- The mutation rate may fall to zero. B- The distribution of beak sizes may cease to be bimodal. C - The finch population may go extinct. D - Beak size may cease...
Tuesday, March 1, 2016 by Daniella

Biology
Why is coelom considered to be an evolutionary advantage
Tuesday, March 1, 2016 by Hasidiah

Biology
A person in Flint Michigan, has severe DNA damage due to heavy metal comtaminated water and the person is still alive. The doctors are now seeing tumors develop. Give two reasons, related to tumor suppression, DNA replication or some other topic covered to date in this class ...
Tuesday, March 1, 2016 by Broam

Science/Biology
the vessels that contain the largest volume in the vascular system are? I think Arteries
Tuesday, March 1, 2016 by Anonymous

biology
I got a biology project that's about the excretory system & I have to write the word excretory & draw pictures inside of the word that compares it to real life. What pictures can something be compared that involves with the system?
Monday, February 29, 2016 by Clarissa

biology
given the inefficiency of two of the pathway shown in figure 9-4 what advantage could there be to using these pathway to produce energy?
Monday, February 29, 2016 by Anonymous

Science/biology
A 62 year old man experiences sudden onset of difficulty breathing, followed by double vision, and later by abnormal kidney and liver function tests. Of the following conditions, which is most likely the cause of his problems? A. Vasculitis​​ B. Raynaud's ...
Monday, February 29, 2016 by Anonymous

biology
hi. I would like to know in reference to wind and insects moving pollen to different species of flowers at the same time, why doesn't pollen in one species fertilize egg of a second species thus forming hybrids?
Monday, February 29, 2016 by cat

biology
the amount of energy needed to start two reactants to form a product is?
Sunday, February 28, 2016 by lisa

SCIENCE
jamal's neighbor tells him that there are more bacterial cells than human cells in his body. which of these is the best reason that jamal should question his neighbors statement? a. jamal is older than his neighbor b. jamal does not like his neighbor very much. c. his ...
Sunday, February 28, 2016 by John Doswell

Science Help
jamal's neighbor tells him that there are more bacterial cells than human cells in his body. which of these is the best reason that jamal should question his neighbors statement? a. jamal is older than his neighbor b. jamal does not like his neighbor very much. c. his ...
Sunday, February 28, 2016 by John Doswell

BIOLOGY - HELP URGENT!!!!
How do the following terms relate to one another with respect to a single genetic locus? - Wild Type Allele(s) - Mutant Allele(s) - Gene Product(s) - Population - Genotype - Phenotype - Dominant Allele - Recessive Allele - Individual - Number of different alleles
Sunday, February 28, 2016 by Craig

Very quick question biology
I'm working on a biology project where I must make a molecule of glucose. I have finished my molecule but I want something in the middle of it which is the "centrepiece ". Can anyone give me any ideas of some things glucose is found in (food) in which I could ...
Sunday, February 28, 2016 by Nicki

Science
1. How does nanotechnology how engineers make products for the future? A. By changing a materials atomic structure, it can be made from elements that are easier to obtain. B. By changing a materials atomic structure, it's physical properties can also be changed. C. By ...
Saturday, February 27, 2016 by Rhyleigh

biology
A positive control group contains the dependent variable under study. true or false i guess it's true
Saturday, February 27, 2016 by Anonymous

Biology please assist
1. Where is pH found? 2.what is the function of pH? 3.what principle guides the phenomenon of pH? 4.what is acid rain ?how is it related to pH values?
Saturday, February 27, 2016 by Sarah

Biology
Draw map of nigeria and indicate the local biomes in the different state
Saturday, February 27, 2016 by Lee Mitchell

biology
In which part of the body are the crypts of Lieberkuhn?
Friday, February 26, 2016 by matty

Biology - Please check?
How does artificial selection differ from natural selection? (Free response) Here is what I wrote: While both of these selections have to do with breeding, artificial selection (same as selective breeding) is where either plants or animals are intentionally bred for scientific...
Wednesday, February 24, 2016 by SkatingDJ

Biology
1.) Prophage occurs when a.) It bonds with carbohydrates to create a virus b.) Bacteriophage DNA embeds itself in host DNA c.) It detaches from carbohydrates to create a virus. d.) Bacteriophage DNA detatches itself from host DNA. D.
Monday, February 22, 2016 by Help!

science/biology (cladogram)
How would a scientist use DNA or protein sequences from three different organisms to construct a cladogram? don't understand this how do I write this???? help!!!!
Monday, February 22, 2016 by e,mma

Biology
MEIOSIS 1)name the process unique to meiosis that occurs during bivalent formation that may increase genetic diversity? 2)how are sister chromatic made and what is the structure that holds them together? 3)what do we call package of genetic information (DNA), encoding a ...
Monday, February 22, 2016 by sk

Biology
How do mutations that alter the nucleotide sequence of a promoter influence the original function of that promoter and thus the entire cell? (Try to name all the biological consequences of possible mutations in the promoter.)
Sunday, February 21, 2016 by Ian

Biology help!!
what compounds (fats, starch, protein and simple sugar) do the following foods have? Oatmeal Margarine Salmon Whole milk Chocolate chip cookies Peach
Sunday, February 21, 2016 by Anonymous

Study Guide
Does anyone know where I could find an online or PDF version of the Holt Biology 2004 study guide?
Sunday, February 21, 2016 by Victoria

Biology
what compounds (fats, starch, protein and simple sugar) do the following foods have? Oatmeal Margarine Salmon Whole milk Chocolate chip cookies Peach
Saturday, February 20, 2016 by Mary

Biology
what compounds (fats, starch, protein and simple sugar) do the following foods have? Oatmeal Margarine Salmon Whole milk Chocolate chip cookies Peach
Friday, February 19, 2016 by Mary

Biology
In what way are bacteria and fungi similar? Ecological function Cell wall components Design of the nucleus Ribosome structure help
Friday, February 19, 2016 by kristina

Biology
bond that holds atoms together in a molecule are... A.radiation energy B. kinetic energy C. thermal energy D. potential energy
Thursday, February 18, 2016 by sharon

Biology
which nucleic acid statement is true? A. mRNA codes for DNA B. mRNA codes for protein C. tRNA makes amino acids D. tRNA makes lipids I think B
Thursday, February 18, 2016 by sharon

biology
Pepsin is... A. enzyme B. lipid C. carbohydrate D. nucleic acid I think A!
Wednesday, February 17, 2016 by sharon

Biology
key factor driving cellular differentiation in the body? A. rate of transcription B. cell nutrience C. expression of genetic coding D. chemical gradients in a cell environment I think A
Wednesday, February 17, 2016 by sharon

Biology
DNA can copy itself easier than RNA because? A. its a double helix B. polymer of nucleotide C. its confined to nucleus D.its supported by histone proteins I have no idea
Wednesday, February 17, 2016 by sharon

Enriched science
What is the goal of synthetic biology? A. The goal of synthetic biology is to mimic living cells B. The goal of Synthetic biology is to generate new tissues to replace damage tissues C. The goal of synthetic biology is to engineer living cells to perform specific functions D. ...
Wednesday, February 17, 2016 by Rhyleigh

Biology
Which nucleic acid statement is true A. mRNA codes for DNA B. mRNA codes for proteins C. tRNA makes amino acids D. tRNA makes lipids I think B
Wednesday, February 17, 2016 by sharon

Science
I'm really bad at Biology and Science in general. Chemistry and Physics will be difficult for me because I'm not good at the Science branch even though I study and work hard for Science/Biology. What can I do to improve?
Monday, February 15, 2016 by Anonymous

Directions help (Biology)
I have to do a research paper for my biology class, and I'm having a hard time understanding what to exactly write about. The directions are written way different then how my teacher has ever addressed anything, I emailed her for clarification but it doesn't seem like ...
Monday, February 15, 2016 by Melody

biology
What kind of molecule forms the sodium-potassium pump? Genuinely in need of the answer to the question.
Monday, February 15, 2016 by Anonymous

biology
How is molecular weight related to the size of a molecule? Genuinely in need of the answer to the following question. Thank you.
Monday, February 15, 2016 by Anonymous

Biology (Animal)
How is molecular weight related to the size of a molecule?
Monday, February 15, 2016 by Anonymous

Math,english,further math,government,CRS,lit in english,yoruba,civic,agric,biology
The fourth and sixth term of an arithmetic progession are -4 and -10 respectively. Find A.the common difference B.the first term C.sum of the first twelve terms
Friday, February 12, 2016 by Comfort

Biology
How are the following terms related to the process of transcription and one another? Eukaryotes, Prokaryotes, membrane-bound nucleus, introns, exons, precursor RNA (pre-mRNA), mature RNA, heterochromatin, euchromatin, and structural gene.
Friday, February 12, 2016 by Henry

Biology ASAP
What is the scientific name ( genus and species level) of star fish, jelly fish, silk spider, mouse, and earth worm
Thursday, February 11, 2016 by Natasha

biology
Picture true of false The atom shown in the diagram has 4 energy levels or shells. 2. The atom shown in the diagram above has a total of 5 electron orbitals. 3. Each energy level consists of 2 or more orbitals. 4. The second energy level consists of 4 electron orbitals. 5. ...
Thursday, February 11, 2016 by Anonymous

biology
The atom shown in the diagram has 4 energy levels or shells. true or false
Thursday, February 11, 2016 by Anonymous

Biology
How can I describe the following things about water in sketches or drawings? please give me ideas 1.High heat capacity 2.High heat of vaporization 3.Water is a solvent 4.Water molecules are cohesive and adhesive 5. Frozen water is less dense than liquid water 6. Water has a ...
Wednesday, February 10, 2016 by Kylie

Biology
Which is an example of a population? all the squirrels in North America and Europe all the species of organisms in one state all the rose bushes around the world all the sugar maple trees in a state park
Wednesday, February 10, 2016 by Hailey

Biology /science
How can I describe the following things about water in sketches or drawings? please give me ideas 1.High heat capacity 2.High heat of vaporization 3.Water is a solvent 4.Water molecules are cohesive and adhesive 5. Frozen water is less dense than liquid water 6. Water has a ...
Wednesday, February 10, 2016 by Kylie

Biology
How can I describe the following things about water in sketches or drawings? please give me ideas 1.High heat capacity 2.High heat of vaporization 3.Water is a solvent 4.Water molecules are cohesive and adhesive 5. Frozen water is less dense than liquid water 6. Water has a ...
Tuesday, February 9, 2016 by Kylie

Earth Science
What are the two most common minerals located in Earth's crust? (A. Feldspar and quartz) B. Iron and copper C. Diamonds and gold D. Salt and saline Climatology is a subspecialty of A. environmental science. B. oceanography. (C. meteorology.) D. marine biology.
Tuesday, February 9, 2016 by Jocelynn

Biology
Two techniques which can help in early detection of bacteria or virus infection much before the symptoms appear in the body?
Tuesday, February 9, 2016 by Ri

Biology
Name an organ which is formed of tissues of two different individuals.
Tuesday, February 9, 2016 by Ri

Biology
Name of the vaccine which is obtained from transgenic yeast . Searched it but cant find it... Plx help !
Tuesday, February 9, 2016 by Ri

Biology
Use your understanding of natural selection to describe how the following trait might have evolved: Plants have pores on the surfaces of their leaves that allow carbon dioxide into the leaf (for photosynthesis), but also allow water to escape. Land plants have guard cells ...
Monday, February 8, 2016 by Lyndsay

Biology
Mammals and birds have evolved from reptiles. In what way does a comparative study of their embryology establish the validity of the statement ? P.S I dont have the"Modern Biology" Book ... so plz help me with the note!
Monday, February 8, 2016 by Ri

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Homework Help: Science