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May 31, 2016

Homework Help: Science: Biology

Recent Homework Questions About Biology

biology
In evolutionary terms, RNA is thought to have preceded proteins and DNA. Which of the following provides the most convincing support for this hypothesis? a. there are more types of RNA than there are of DNA b. RNA can both store genetic information and act as an enzyme c. ...
Thursday, September 24, 2015 by Tim

Biology
Which of these classifications is most specific? Family Genus Phylum Order I really need help on this question, and if u can do it THANK YOU SO MUCH! Its for my Biology test.
Thursday, September 24, 2015 by Michael

Biology
2. Which macromolecules were present in your saliva
Thursday, September 24, 2015 by Shia

biology
In evolutionary terms, RNA is thought to have preceded proteins and DNA. Which of the following provides the most convincing support for this hypothesis? a. there are more types of RNA than there are of DNA b. RNA can both store genetic information and act as an enzyme c. ...
Thursday, September 24, 2015 by Tim

biology
Which of the following is the key factor driving cellular differentiation in the body? a. chemical gradients in the cellular environment b. expression of genetic coding c. rate of transcription d. cellular nutritional status c? confused cuz transcription is the first step in ...
Thursday, September 24, 2015 by SOS

Biology
How would you prepare 100 ml of the following aqueous solution: 25 mM TrisCl, 50 mM EDTA, 2% (w/v) NaCl, 5 X M9? You have been provided with stock solutions of 1 M TrisCl, 0.5 M EDTA, 25 X M9 and crystals of NaCl.
Thursday, September 24, 2015 by Madie

Biology
What is the phase where chromatin condenses to form chromosomes
Wednesday, September 23, 2015 by John

algebra
An “A” is considered 4.0, a “B” is 3.0, a “C” is 2.0, a “D” is 1.0, and an “F” is 0. In your first semester you received the following grades. Calculate your grade point average English = credits 3.0 Grade = C Biology = credits...
Tuesday, September 22, 2015 by Kristen

Biology/ Chemistry
You want to prepare 0.5 L (500mL) of a 0.250M Na2SO4 solution. How many grams of do you need to measure out for the solution? [MW of Na2SO4 = 142 g
Monday, September 21, 2015 by Aileen

Biology
Osmosis is an example of passive transport. How might the results have changed in this lab if the gummy bear had been able to use active transport to move sugars out?
Monday, September 21, 2015 by Ariel

Biology
Imagine that you have a stock solution with a concentration of 4.6 M glucose (C1). You want to use the stock solution to prepare a diluted solution of 0.22M glucose (C2). You need a total volume of 10mL of 0.22M glucose (V2). What volume of water you need to use for making 0....
Sunday, September 20, 2015 by Marco

Biology
What roles do survival and reproduction play in the evolution of antibiotic resistance?
Sunday, September 20, 2015 by Anonymous

Biology
What role does mutation play in the evolution of antibiotic resistance?
Sunday, September 20, 2015 by Anonymous

Biology
What are the differences between primary succesion and secondary? Why are there these differences? How do I answer the second question
Saturday, September 19, 2015 by Anonymous

Biology
1.A white flowered plants is crossed with a plant that is heterozygous for the trait. What percentage of he offspring will have purple flowers? 2.Two plants, both heterozygous for he gene that controls flower color are crossed. What percentage of their offspring will have ...
Saturday, September 19, 2015 by Gina

Biology
Which statement is not true regarding illness associated with malfunctioning cellular organelles? The illness _____ a. can result in a diverse set of sumptoms b. may impact multiple body systems c. is typically simple to diagnose d. may be lethal
Saturday, September 19, 2015 by Gina

Biology
Substance X is converted to substance Y in a chemical reaction. What role would a catalyst play in this scenario? A. It would increase the solubility of substance X into the solvent needed to speed up the reaction. B. It would speed up the reaction by becoming part of the ...
Wednesday, September 16, 2015 by Jello

biology
a field mouse eats 10000 g of leaves each year, among other things. If each gram of leaves has absorbed 150kj of energy from the sun, about how much energy is available for the mouse ?
Wednesday, September 16, 2015 by radman

biology
digital readout for micropipettor for 0 7 0 in microliters?
Tuesday, September 15, 2015 by Anonymous

biology
which micropipettor would be appropriate to measure 250 microliters? P20, P200, or P1000?
Tuesday, September 15, 2015 by Anonymous

ap biology
why should you not rotate the volume adjuster of a micropipettor above or below the range written on the instrument? what two things could happen?
Tuesday, September 15, 2015 by Anonymous

ap biology
If you have fluid in the pipet tip and want to expel it all, should you only depress the plunger to the first stop or should you continue on to the second stop? why not choose the other option? what could happen?
Tuesday, September 15, 2015 by Anonymous

ap biology
if you depress the plunger to the first stop, place the tip into a solution and then release the plunger, does it withdraw the sample, expel the sample, or eject the tip?
Tuesday, September 15, 2015 by Anonymous

biology
Besides coal and oil (fossil fuels) what type of rocks store a great deal of carbon?
Tuesday, September 15, 2015 by Clarissa

ap biology
why should you not rotate the volume adjuster of a micropipettor above or below the range written on the instrument?
Tuesday, September 15, 2015 by Anonymous

Biology (Genetics)
How would you solve these problems? I am confused about what it is asking and how to start it. A step by step process with explanation would be greatly appreciated. Also, are there any simple ways to work out the problems without getting confused, or is there a way to know ...
Tuesday, September 15, 2015 by Airin

Biology
Based on Figure 2-4, what is the mass number of carbon? It says on the table (2-4) that carbon has 6 neutrons and 6 atomic number How do I solve this? Please help!
Monday, September 14, 2015 by SkatingDJ

Biology
The maltose molecule can be broken down into two individual glucose molecules with the help of an enzyme produced within a cell. Which of the following changes is most likely to slow down this reaction? Adding more maltose molecules Increasing the volume of the cell Adding ...
Monday, September 14, 2015 by eee

biology
circle all the things from the list that would be included in a community. Explain why you circled those items. deer ticks mushrooms rotting leaves lady bug 3 inches of rainfall oak tree soil 75 degrees celsius kudzu 6 hours of daylight
Sunday, September 13, 2015 by biology

Physics
how are the fundamental laws and principles of physics related to the complexity that we see in nature? 2) How do the laws of physics apply to other sciences such ad biology, chemistry, and earth science? Give a specific example to show the connection - is it because there ...
Sunday, September 13, 2015 by anonymous

Biology
My mom was average height and my dad was short and mine short. I am think my genotype is heterozgous. My mom weight is average and my dad was overweight and my was average. I am think my genotype is homozygous.
Saturday, September 12, 2015 by M

Biology
My hair color is blonde and so is my parents.What is my genotype?
Saturday, September 12, 2015 by M

Biology
My mom has eye color hazel and my dad has the eye blue and my eye color is blue. Would my Genotype be homozgous? My mom hair has blonde and my dad has blonde hair and I have blonde hair would my genotype be heterozgyous? Biology - woody, Friday, Se
Friday, September 11, 2015 by M

Biology
My mom has eye color hazel and my dad has the eye blue and my eye color is blue. Would my Genotype be homozgous? My mom hair has blonde and my dad has blonde hair and I have blonde hair would my genotype be heterozgyous?
Friday, September 11, 2015 by M

biology
An individual who is heterozygous for Eye color would be? A.two alleles for brown eyes. B. One allele for brown eyes and one blue eyes. C.two alleles for blue eyes.d.blue eyes I am think b.
Friday, September 11, 2015 by woody

Biology
how does the number of electrons in an atom determine what kind of bond it can form?
Friday, September 11, 2015 by dylan

biology
circle all the things from the list that would be included in a community. explain why you circles those items. deer ticks mushrooms rotting leaves lady bug 3 inches of rainfall oak tree soil 75 degrees Celsius kudzu 6 hours of daylight
Thursday, September 10, 2015 by sahsa

biology
the species in a forest include moose, wolves, lichens, mosses, lake trout, mosquitoes, and spruce trees, what level of organization does this group of species form?? is it community?
Thursday, September 10, 2015 by sahsa

Biology
Which of the following depends on bacteria?
Wednesday, September 9, 2015 by Megan

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? the low density of water in the solid phase water’s strong forces of adhesion water’s high specific heat water’s solvent properties ...
Wednesday, September 9, 2015 by SkatingDJ

Biology
1) Large/tough seeds act as a selection pressure on what trait? a. Large bills b.Large feathers c.Dark feathers d.Long tails 2) What causes the change in bill depth between 1976 and 1978? a.The lack of rain b.The persistence of only larger seeds c.Differential survival of ...
Sunday, September 6, 2015 by Need Help Urgent

Biology
I did a lab and have been graded already. One of the questions asked us to pick good scientific questions from a list of choices. One of the choices read, "What soil properties determine the resulting color of a plant's flowers?". Note: I have changed the wording...
Saturday, September 5, 2015 by dylan

Biology
Justify why it is important to scientists to have a universal system of measurements. What does this mean? Can someone help explain it to me? I'm doing some research but I'm still confused. Please help? Thanks
Thursday, September 3, 2015 by SkatingDJ

biology
which of the following is a characteristic that could be applied to both living and nonliving things
Wednesday, September 2, 2015 by ciara

biology
Disadvantages of cross pollination
Wednesday, September 2, 2015 by lillian

Biology
Of the following, which is the most likely consequence of a manufacturing plant dumping its chemical waste into a nearby stream? increased oxygen levels in the water decreased flow rate of the stream loss of a keystone species an algal bloom <- my answer My question is ...
Wednesday, September 2, 2015 by Steve

biology
which of the following undergoes change during a chemical reaction
Tuesday, September 1, 2015 by ciara

biology
What type of extraction is needed to isolate integral proteins? (Hint: a type of amphipathic molecule is in this solution)
Sunday, August 30, 2015 by Belle

biology
What types of amino acids and domains are found in the "transmembrane" region of these proteins?
Sunday, August 30, 2015 by Bri

Biology
How does the "Patching and Capping" experiment verify the fluid concept of the Fluid Mosaic model?
Sunday, August 30, 2015 by Bri

biology-science
organism: 7 characteristics that make up all organisms biosphere: name our biospherE?
Wednesday, August 26, 2015 by kasha

biology
how is a protein different from a complex carbohydrate
Wednesday, August 26, 2015 by ciara

biology
why is carbon so abundant in living things when oxygen is the most abundant element on earth
Wednesday, August 26, 2015 by ciara

Biology -- metric
Which statement best describes the significance of the number 10 in the metric system? The system is used by 10 countries There are 10 metric prefixes There are 10 base units The system is based on multiples of 10. * my answer How many places would the decimal move in a ...
Tuesday, August 25, 2015 by Anonymous

biology
providing examples explain how sexual reproduction in plants has evolved to become less dependent on water?
Monday, August 24, 2015 by cali

Biology
What main region(s) of a peptide would be the major effectors of peptide folding?
Monday, August 24, 2015 by B

Cell Biology
If three amino acids are bonded together linearly, how many molecules of water are produced?
Sunday, August 23, 2015 by Bri

Biology
what is the scientific meaning to the word foundation?
Tuesday, August 18, 2015 by Jill

cp biology
include the following vocabulary when completing the concept map. be sure to PLACE THE WORDS in the correct step of the scientific method, and DISCUSS what occurs at each step. words: qualitative data quantitative data independent variable data analysis/ interpretation law ...
Tuesday, August 18, 2015 by rachel

Biology
Why does scenedesmus colony consist of 4,8 or 16 cells?
Sunday, August 16, 2015 by Max

Biology
How is a protein different from a complex carbohydrate? a.The monomers that make up a protein vary whereas the monomers that make up a complex carbohydrate are all the same. b.Proteins function as energy storage polymers whereas complex carbohydrates function to control rates ...
Saturday, August 15, 2015 by Steve

Biology, please help 9th
how the brain is related to human behavior and what the brain’s role is in the field of psychology.
Friday, August 14, 2015 by XenaGonzalez

Biology HELP!
1. Which of the following correctly identifies the composition of an oxygen atom? (1 point) 8 protons, 8 electrons, and 8 neutrons 6 protons, 6 electrons, and 6 neutrons 8 protons, 6 electrons, and 7 neutrons 6 protons, 6 electrons, and 12 neutrons 2. Which of the following ...
Thursday, August 13, 2015 by XenaGonzalez

biology
The (**) are my answers Which of the following is not a characteristic of life? (1 point) maintains homeostasis *** composed of cells composed of atoms carries out metabolism 2. Which of the following must be true to consider something to be alive? (1 point) It must be able to...
Wednesday, August 12, 2015 by Freshman Girly Girl

Biology HELP!
Which of the following is true? Mark all that apply. (2 points) A hypothesis can be proved incorrect through experiment. Conclusions cannot disprove a hypothesis. Conclusions are made based on the analysis of data. Opinion is used to analyze data. A/D
Monday, August 10, 2015 by XenaGonzalez

Biology
a) Initial filtration occurs when blood pressure forces fluid out of the __________ and into __________. b) Blood enters the glomerulus through the __________ and leaves through the __________. c) Describe what normally passes into Bowman's capsule. d) What substances are ...
Tuesday, July 21, 2015 by Anonymous

maths literacy, biology, geography, tourism
what course can i do with these subjects
Thursday, July 16, 2015 by zoliswa

Biology
1) Microscopic hairs of the windpipe are always __________. 2) The cilia of the windpipe move harmful substances __________. 3) You build a heavy gust of air when you __________ or __________. 4) Coughing and sneezing help push harmful substances from the __________.
Wednesday, July 15, 2015 by Anna

Biology
1) Mucus traps __________. 2) The windpipe is lined with sticky __________ and microscopic __________. 3) Tiny microscopic __________ are called cilia.
Wednesday, July 15, 2015 by Ben

Biology
1) The nose has small __________. 2) Hairs in the nose trap __________. 3) The nose makes a sticky liquid called __________.
Wednesday, July 15, 2015 by A

Biology
Breaks down proteins into polypeptides and amino acids What is the component?
Wednesday, July 15, 2015 by Anonymous

biology
Activates conversion of pepsinogen to pepsin. What is the component? What is the secretion?
Wednesday, July 15, 2015 by Anonymous

biology
what kind of wbc is involved in the production of antibodies
Thursday, July 9, 2015 by kisha

Biology
Record any two of the following temperatures in your lab environment. In each case, allow the end bulb of the Celsius thermometer to remain in or on the sample for one minute. Cold tap water in a 50 ml beaker = ___ Celsius Hot water in a 50ml beaker= _____ Celsius
Wednesday, July 8, 2015 by Penny

Science
Scientists who study abnormal animal behavior would probably know much about A. Astronomy B. biology C. Geography D. History
Wednesday, July 8, 2015 by Kimberly

biology
What is cyclosis?
Monday, July 6, 2015 by yasir Ali

Biology, evolution
how does biochemical molecules show evidence of evolution?
Thursday, July 2, 2015 by Crissy

Biology ( Ms.Sue help)
Ms.Sue I am sorry for not understanding you but I read your post and I still don't understand what the answer is. All I was asking for was a yes or no answer to my question.   Autosomes are _______ chromosomes.  A. abnormal B. homologous C. haploid...
Wednesday, July 1, 2015 by Brooklyn

Biology ( Ms.Sue help)
Sorry to bother you but am I correct for the answer homologous?
Wednesday, July 1, 2015 by Brooklyn

Biology ( Ms.Sue help)
   Autosomes are _______ chromosomes.  A. abnormal B. homologous C. haploid D. nonsex My guesses would be either B or D.
Tuesday, June 30, 2015 by Brooklyn

Biology
A large number of deer once lived on the Kalibab Plateau north of the Grand Canyon in Arizona, USA. In 1907 their predators, wolves, coyotes and pumas, were killed to protect the deer. What do you think happened after this?
Sunday, June 28, 2015 by Stoof

Biology ( Ms.Sue help)
 A parent with type AB blood could not produce a child with type  A. AB. B. A. C. B. D. O. I am stuck!
Thursday, June 25, 2015 by Brooklyn

Biology
  How does mitosis in plant cells differ from that in animal cells?      A. Plant cells lack centrosomes.">A. Plant cells lack centrosomes.B. Plant cells lack spindle fibers.">B. Plant cells lack spindle fibers.C. ...
Thursday, June 25, 2015 by Brooklyn

Biology
J.J. Thomson's experiments supported the existence of a particle that deflected away from a negative charge and toward a positive charge. Ernest Rutherford found that when positive particles were fired at gold foil, some of the particles deflected rather than passing ...
Wednesday, June 24, 2015 by Rafa

Biology ( Ms.Sue help)
Which one of the following is a trans fatty acid found in most snack foods?  A. Stearic acid B. Carboxyl acid C. Oleic acid D. Elaidic acid I've been trying to find this answer all day and I have no idea.
Wednesday, June 24, 2015 by Brooklyn

Biology
20.   Which of these is the smallest structure?  A. Dipeptide B. Polypeptide C. Protein D. Amino acid
Wednesday, June 24, 2015 by Brooklyn

Biology
Are nucleus and nuclei the same thing?
Tuesday, June 23, 2015 by Brooklyn

Biology
An example of a nonspecific defense provided by the skin is A)antibodies. B) fever. C) proteins. D) sweat. is it B?
Tuesday, June 23, 2015 by Rafa

Biology ( Ms.Sue help)
Which one of the following reactions occurs in the cristae of the mitochondria?    A. The prep reaction   B. Glycolysis   C. The electron transport chain   D. The citric acid cycle   B?
Tuesday, June 23, 2015 by Brooklyn

biology
A researcher puts brine shrimp in salt water for 24 hours. What is expected of this experiment?
Tuesday, June 23, 2015 by mmv

biology
the names of bons and cartilages in humen body
Monday, June 22, 2015 by nikita bhukar

Biology
  Which one of the following reactions occurs in the cristae of the mitochondria?   A. The prep reaction  B. Glycolysis  C. The electron transport chain  D. The citric acid cycle  B? 
Monday, June 22, 2015 by Brooklyn

Biology
Why do introduced species often disrupt an ecosystem?
Monday, June 22, 2015 by Sara

Biology
The water cycle is best described by which of the following statements? Water in the atmosphere must be converted to another chemical before animals can use it. The water on earth changes forms as it moves from one reservoir to another.>----- My answer As water moves ...
Sunday, June 21, 2015 by Sara

Biology
Which of the following biomes covers the largest area of earth? tundra marine-----> My answer grassland forest
Sunday, June 21, 2015 by Sara

Biology
In which case would a widely accepted scientific idea MOST likely be revised? A) when an error is found in a previous calculation B) when scientists calculate a quantity with greater accuracy C) when several well-tested findings go against the accepted idea Eliminate D) when ...
Friday, June 19, 2015 by Rafa

Biology
Genetic engineering is the manipulation of genes using cloning and transformation to change the gene structure. Genetic engineering has many positive outcomes. For example, A) gene therapy might cure one defect while creating another. B) genetic modification of foods can ...
Friday, June 19, 2015 by Rafa

Biology
   All of the rabbits, deer, and several bird species found within a field are considered to be part of a/an  A. population. B. ecosystem. C. biosphere. D. community. D?
Friday, June 19, 2015 by Brooklyn

biology help
Describe the hormeostatic control that occurs in the body of a normal person to increase blood glucose level when they are low
Thursday, June 18, 2015 by promice

Biology -- repost
(To whoever posted the first time -- DO NOT use any tutor's name where YOUR name should be. Impersonation of a tutor is not allowed on this website.) What are the biological terms of the following? 1.Reproductive structure in breadmould 2.acquired immunity obtained through...
Thursday, June 18, 2015 by Writeacher

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Homework Help: Science