Post a New Question

Homework Help: Science: Biology

Recent Homework Questions About Biology

Biology
What is an artery

Biology
If gene frequency for PTC nontaster is 0.4, then what will be the number of heterozygotes tasters in a population?

Biology
1. How do mutations play into the fitness of an organism? 2. Describe how variation, selection and time fuel the process of evolution.

Biology
1. How do mutations play into the fitness of an organism? 2. Describe how variation, selection and time fuel the process of evolution.

biology
what does an inhibitory interneuron do?

Help: biology
1. You have in front of you three vials containing a clear liquid. You are told that each vial contains one of the following carbohydrates: Fructose, Sucrose, Amylose. What experiments could you carry out to determine the composition of each vial. What would be the expected ...

biology
HI, i'm in need of sites/articles that explain what invertebrate, chordate, and primates are.

biology
in need of journal articles that talk about the structures,characteristics , nutrition,growth and control of bacterias,viruses and eukarya in general...please help

biology
The voltmeter showed a negative reading and the sodium ion concentration remained constant outside the axon. This could be explained best by the fact that the

biology
All of the following factors contribute to a polarized membrane except

biology
1) Choose invertebrate to research. Explain how body plan and anatomy enables invertebrate to perform the essential functions it needs to survive. Explain how your chosen invertebrate fits into the cladogram of invertebrates. 2) Chordates (not a primate) Explain how body plan ...

biology
Workout a cross between a homozygous tall pea plant with axial flower (TTAA) and a homozygous dwarf pea plant with terminal flower (ttaa) Note:(a)considering the table that provides and summarize the contrasting character of pea plant,(1)state the phenotype ratio of the F1 ...

cell biology
How can we differentiate MMPs from different proteolytic enzymes

biology
At what stages of meiosis 1 and 2 are the chromosomes unreplicated and replicated At what stages of meiosis 1 and 2 are the chromosomes diploid and haploid

biology
what are some complications of diabtetes mellitus?

Biology
Hi, I am trying to work out a hypothesis to compare Estrogen receptors in breast cancer cells to normal breast tissues. Am I right in thinking that this will be a hypothesis using "effect" words instead of association ?

Biology
What Are The Main Similarities Between Typhoid And Cholera?

Biology (check answer)
Transcription is similar to DNA replication in all of the following ways except: a) the DNA strands unzip b) the polymerase enzyme is involved c) complementary bases are paired up d) a new strand of mRNA is built from the existing DNA molecule is it d?

biology
if there is no colonies on the wild type or lysate or ADP-6only plates, did you obtain an approximate 10x-fold change in colony numbers between the different dilutions? did you expect this? pls help

Biology
The p53 enzyme system prevents progression to which stage of the cell cycle? choices are: 1. G1 2.Cytokineses 3.S phase 4. Mitosis 5. G2 * I think it's S phase, It's not G1 right?

Biology
A 2n cell has 23 pairs of chromosomes. At the end of Meiosis 1, how many individual chromosomes will each daughter cell have? ____ IS it 46?

biology
HELP PLEASE!!!! How does the outcome of a chemical reaction that absorbs energy differ from one that releases energy?

Biology
Fossils are (select all correct choices) * 1. molds and casts of organisms in the past. 2. drawings of ancient animals and other organisms. 3. footprints or burrows of small animals that lived in the past. 4. the preserved remains or traces of organisms that lived in the past...

Biology
Why do mosquitoes like biting the face more than other part of the body?

biology 30
suppose that sample of beef broth initially contains 16 bacterial cells. after 4.0 h, there are 1.6 x 106 bacterial cells in the sample. calculate the growth rate of the bacterial population for the given time interval. (record your answer in scientific notation: x x 10n )

biology
a)what are the main similarities b/n cholera and typhoid?

maths
3. Suppose a bookcase shelf has 5 Mathematics texts, 3 Biology texts, 6 Chemistry texts and 4 Physics texts. Find the number n of ways a student can choose: a. one of the texts; b. one of each type of text.

Biology
What is one of the outputs or products of respiration? It has to be a four letter word with the second letter being e because it is the hint that my teacher gave us. I couldn't find anything on it. So far I have disocovered is carbon dioxide, water, and atp.

Biology
Why does our fingers have a number of hinge joints rather than one or two?

Biology
The gene for red hair is recessive to the gene for black hair.What will be the hair colour of a child if he inherits a gene for red colour from his mother and a gene of black hair from his father?Express with the help of a flow chart..if you can..otherwise can you please tell ...

biology
Where is the spinal nerve and what is it made of?

Biology
Which of the following mechanisms for osmoregulation or nitrogen removal is correctly paired with its corresponding animal? A) metanephridium-earthworm B) Malpighian tubule-frog C) kidney-insect D) flame- bulbsnake

Biology
the eventual evolution of living organisms on earth is based upon the following theory: during the early stages of the earth's history the chemical characteristics of the world changed as the conditions on the planet changed. The changes established the conditions necessary ...

Biology
Cladograms and phylogentic trees can give you information about relatedness of species and evolutionary history True or False

Biology
Is medulla oblongata responsible for peristalsis?

Biology
What's the largest and most successful kingdom in the animal kingdom?

Biology
A biologist found that 20% of a population of bats are brown, which is recessive. assuming the population shows Hardy-Weinberg equilibrium, determine the genotype and the allele frequencies of the population?

biology (check answer)
What is different about every nucleotide of a DNA molecule? a) the deoxyribose sugar b) the phosphate group c) the shape of the molecule d) the nitrogen bases it's the nitrogen bases, am i correct?

Biology
Unikonta paraphyletic or monophyletic? Animalia paraphyletic or monophyletic?

biology
why does the knee jerk reflex work for someone with spinal cord injuries?

biology
why does the knee jerk reflex still work for people who have spinal cord injuries?

biology
how is the knee jerk reflex (like when a hammer hits the knee and the leg stretchs out) related to proprioception? if someone doesn't have proprioception why would their leg not move when it is hit by the hammer?

Biology
I am doing a project on the lymphatic system. I need ideas as a activity the class can do. I don't want there to be a lot of materials needed. Help?

Biology
Please help with these questions question: Oxygen consumption by a growing culture of Escheri... oxygen consumption by a growing culture of Escherichia coli bacteria. What could explain the gradual consumption of oxygen, even though no glucose has yet been added to the ...

Biology
Please help with these questions question: Oxygen consumption by a growing culture of Escheri... oxygen consumption by a growing culture of Escherichia coli bacteria. What could explain the gradual consumption of oxygen, even though no glucose has yet been added to the ...

Biology
Please help with these questions question: Oxygen consumption by a growing culture of Escheri... oxygen consumption by a growing culture of Escherichia coli bacteria. What could explain the gradual consumption of oxygen, even though no glucose has yet been added to the ...

Biology
Please help with these questions question: Oxygen consumption by a growing culture of Escheri... oxygen consumption by a growing culture of Escherichia coli bacteria. What could explain the gradual consumption of oxygen, even though no glucose has yet been added to the ...

biology
physics osmosis

biology
would it be easier if someone who doesn't have proprioception to go to space and return back to earth to walk normally or would it be the same?

Biology
What do the structures of Glycine and Arginine have in common? And what makes them different?

biology lab
26.2g of sodium chloride(NaCL) are dissolved in enough water to make 100mL of solution. What is the molarity of this solution?

biology lab
how many grams of mercury II Nitrate will you need to prepare 500mL of a .60 M solution ?

Biology
What amino acid property makes proteins highly functional? I would assume it would be the structure and sequence, but are there additional properties?

biology
If you were testing a reflex on your knee, why would that be slower than a conscious reflex (like if someone told you to grab something right when it falls) in your brain?

Biology
A life cycle in which organisms switch back and forth between diplid and haplid stages?

BIOLOGY
1. what are the differences between white blood cells and antibodies? 2.why is HIV not detected immediately as foreign material once it enters our blood stream or white blood cells? 3.what is the enzyme used by HIV to convert RNA to DNA?

Biology
What is the reaction that creates polysaccharides? What covalent bond forms between 2 sugars? Which is the main group involved in this bond formation? I've been reading my book for hours and I can't find the answer to this

biology
if you have 1.0*10^9 molecule in tube and perform a 10^-7 dilution, how many molecule will in the new tube?

biology
if you want to make 50 ml of a 1x TAE solution fro a 50X stock, how would you prepare it?

Biology
number of water molecules produced when 14 amino acids are join to form a polypeptide bond?

Biology
We know that variations (differences) within a population are necessary for natural selection to occur. Which of the following is NOT a source of genetic variation? a. Mutations b. Independent assortment c. Crossing over d. Mitosis

biology
you added 3ml stock solution of 0.05mg/ml of dye and 7ml of water, what will be the final concerntration.

Biology
What is the path that electrons take in C3 photosynthesis?

biology
A bacterium has a genome size of 6.0 X 106 base pairs. There is one Origin of Replication (ORI) and each DNA polymerase catalyzes the addition of 1,000 nucleotides/second. How much time is needed to replicate the entire genome?

biology
a. what are the composition in nutrient broth? b. give 5 different types of media used for cultivation of microbes and define each?

EDTECH
1. Which of the following could be an engineering project that could better protect the planet? -finding a new landfill site -designing a better trash compacter -deciding which product can be recycled*** -growing microbes that eat oil 2. Engineers who are working to find ...

biology
what kind of bond holds the hydrogen to the oxygen in one water molecule??

Biology
how many grams of sucrose would I need to make 350mL of an 18% solution?

math
In a class of 80 students,53 study Art,60 study biology,36 study art and biology,34 study art and chemistry,6 study biology and 18 study biology but not chemistry.Determine the number of students who study =Art only =Chemistry only

Maths
In a class of 80 students,53 study Art,60 study biology,36 study Art and biology,34 study Art and chemistry,6 study biology but not chemistry.Illustrate the information on a Venn diagram.Determine the number of students who study Art only And Chemistry only

biology
If allele frequencies change, natural selection must be acting in some way. True or False?

biology
A devastating tsunami wipes out most of the population of a frog species that lives on just one tropical island. What is the most likely outcome of this event? A) frequency-dependent selection B)inbreeding depression C)rapid adaptive evolution D)purging of all deleterious ...

Biology
If I have 2.5 amylase stock solution, 2.5 PBS Buffer, and final amylase concentration of 25 [ug/ml] , how do you calculate the amylase dilution factor?

Biology
Why would the GBI (Georgia Bureau of Investigation) want to use gel electrophoresis? A. Determine if someone has a genetic disease B. Determine the paternity of a child C. Determine the proper genetic sequence to make insulin D. Determine the identity of a criminal Not sure help?

Biology
DNA is a nucleic acid made up of monomers called A. nucleotides B. polypeptides A?

Biology
A heterozygous brown eyed (Bb) parent and a homozygous brown eyed parent (BB) have offspring. Which of these genotypes would not occur in their offspring? A. bb B. Bb C. BB Not positive but A?

Biology
A genotype represented by the letters TT is considered to be which of the following? A. Heterozygous dominant B. Homozygous recessive C. Homozygous dominant D. Heterozygous recessive A? Not sure

Biology
The short stem trait (t) is recessive to the tall stem trait (T). If a homozygous short pea plant is crossed with a heterozygous tall plant, what is the chance that the offspring will be short? A. one out of four B. three out of four C. all four D. two out of four ???

Biology
John has blue eyes. Blue eyes are recessive to the dominant trait for brown eye color. His genotype is bb. What is Johns phenotype? I don't know. Explain?

Biology
Mendel crossed two pea plants. One pea plant was homozygous tall (TT) and the other was homozygous short (tt). What are the possible phenotypes (how many tall plants and how many short plants did he get?) I don't understand questions like this.

Biology
A homozygous short dog (dd) is crossed with a heterozygous tall dog (Dd). What is the probability that the offspring will be short? Not sure ?

biology
what role doescarbon dioxide play in plant processes

Biology
During the Late Carboniferous, Indiana lay close to the equator, making the climate humid and warm. Swamps and wetlands were prominent in much of the state. Dominant fossil plants from this time include lycopods, conifers, and seed ferns (extinct gymnosperms). Plant material ...

Biology
John has blue eyes, blue eyes are recessive to the dominant trait for brown eye color. his genotype is bb . What is johns phenotype? A. brown B. Bb C. Blue D. bb My best answer is B

biology
John has blue eyes, blue eyes are recessive to the dominant trait for brown eye color. his genotype is bb . What is johns phenotype? A. brown B. Bb C. Blue D. bb My best answer is B

biology
1)Can you suggest reasons why a phylogeny based on molecular evidence and a phylogeny based on morphology and other evidence might not be exactly the same? 2) Zoologist worldwide are sequencing a mitochondrial gene CO1 (cyctochrome c oxidase subunit), which is found in all ...

biology
Which of the following organs remove nitrogenous waste from the body? a. Liver b. Large Intestine c. Kidneys d. Gall Bladder

Biology
27. Part A. Make a punnett square (as best as you can in this online format) and cross parents both with the thumb genes Aa (A=normal thumb, a=hitchhikers thumb) and show the results. (1 pt) A a A AA Aa a Aa aa 27 Part B. (1 pt) Approximately what percentage of their children ...

BIOLOGY/EVOLUTION
Q7. In the Mountains and Valleys exercise, which of the following parameters had the largest influence on whether the finch population evolved a bimodal distribution? The speed at which the model ran. The difference in carrying capacity between the wet versus dry sides of the ...

DAV; subject biology
What are bio - degradable pollutant?

biology
Scientific Method Project In a 2-page maximum type written paper, complete research on a topic of question from the readings. Utilizing the scientific method, document the application of the steps in determining your hypothesis and findings. Each step is worth up to 20 points...

biology
Which is an ion found in a glass of water? i think it would be oxygen, correct?

Biology
An example of homologous structures would be our front teeth and ___: a. the mandibles of a crab b. the mouthparts of a mosquito c. the beak of a bird d. the tentacles of a sea worm e. the front teeth of a horse I'm having difficult on which answer is right (my answer would be...

Biology
A green flower (GG) is crossed with a white flower (gg). Which combination of alleles is a possible outcome? * a. GG only b. gg only c. Gg only Not sure to be honest? Help?

Biology
Explain the meanings of Mendel’s principle of segregation and principle of independent assortment. Under what circumstances does the principle of independent assortment hold true? Give an example in which this law does not apply.

Biology
I have a question on plant science, wondering where I can get the answer..

Biology
2 g of glycine (C2H5NO2) are dissolved in water to a total volume of 3 L. What is the concentration of the glycine solution in M? Round answers to two significant figures.

Biology
what is the definition of respiration?

Biology
What is DNA replication?

biology
Can you please explain this to me? List all the possible genotypes of a pea plant with purple flowers and round seeds.

  1. Pages:
  2. 1
  3. 2
  4. 3
  5. 4
  6. 5
  7. 6
  8. 7
  9. 8
  10. 9
  11. 10
  12. 11
  13. 12
  14. 13
  15. 14
  16. 15
  17. Next>>

Homework Help: Science

Post a New Question