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Homework Help: Science: Biology

Recent Homework Questions About Biology

Please Help Biology Question
Pick the correct answer to the following question. Write a brief statement explaining why each choice of answers is correct or incorrect. In diabetes mellitus, because of insufficient insulin production, glucose cannot enter cells. instead it accumulates in the blood plasma. ...

Biology (Please Help: Urgent)
The Hardy-Weinberg formulas allow scientists to determine whether evolution has occurred. Any changes in the gene frequencies in the population over time can be detected. The law essentially states that if no evolution is occurring, then an equilibrium of allele frequencies ...

Biology
Pick the correct answer to the following question. Write a brief statement explaining why each choice of answers is correct or incorrect. In diabetes mellitus, because of insufficient insulin production, glucose cannot enter cells. instead it accumulates in rhe blood plasma. ...

Biology
Which of the following is true? A.Biased thinking promotes scientific ideas. B.Open-mindedness restricts scientific thinking. C. Creativity fosters scientific discovery. D. Skepticism inhibits scientific exploration. I think it is C...?

Biology
Describe how enzymes affect chemical reactions and explain why this makes enzymes important to living things. I need help this will be on my test I am studying for.

Biology
Amino acid is to protein as A. fat is to lipid B. DNA is to RNA C. sugar is to fat D. simple sugar is to cellulose I think it is A..?

Biology
You are testing a hypothesis that population density of a particular plant species influences the rate at which a pathogenic fungus infects the plant. Because the fungus causes visible scars on the leaves, you can easily determine whether a plant is infected. Design an ...

biology
Does each sister chromatid contain double stranded DNA?

Biology
What does the notation 4n = 28 tell you about how many types of chromosomes there are and how many of each type of chromosome are present in a cell? I am a little confused on how this is determined. Would it be 4 sets of chromosomes with 7 of each type of chromosome?

Biology
1. Given the following concordance rates, is the identified trait primarily genetic or environmental? Explain. MZ Twins DZ Twins Height 0.94 0.44 Measles 0.95 0.87 Migraine headaches 0.80 0.39 Body fat percentage 0.73 0.22

Biology
The intracellular fluid concentration is 300 mOsm/kg. The extracellular fluid concentration is 280 mOsm/kg. The net movement of water is in which direction?

Biology
The intracellular fluid concentration is 300 mOsm/kg. The extracellular fluid concentration is 280 mOsm/kg. The net movement of water is in which direction?

Biology (Science)
Which of the following is not true about a hypothesis? 1) Previous knowledge can help support it. 2) It is a tentative explanation. 3) It can be proven to be false. 4) It must be testable to be useful. 5) It can be proven to be true. I know for sure that 2 and 4 is not the ...

Biology (Science)
John uses mechanical "predators" to approach frogs at a pond shore, and he records the distance between predator and frog as the frogs jump. (PEER REVIEW) On a walk around pond John sees that small frogs on the shore only allow him to get within 5 feet before jumping into the ...

Biology
Draw a Punnett square to demonstrate the inheritance of cystic fibrosis with both parents being carriers

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?

BiologyI
Discoveries in DNA, cell biology, evolution, biotechnology have been among the major achievements in biology over the past 200 years with accelerated discoveries and insights over the last 50 years. Consider the progress we have made in these areas of human knowledge. Present ...

Biology
The father of a mating pair expresses Huntington disease. The mother is healthy. What is the recurrence risk for the offspring? Draw a Punnett square to demonstrate the inheritance.

Biology
Which of the following statements about the compound HCl is true? *The physical and chemical properties of HCl are different from those of H2 and Cl2. *Only the physical properties of HCl are different from those of H2 and Cl2. *Only the chemical properties of HCl are ...

biology
identify and describe how organism could respond to an external stimulus

Biology please help
1. Contraction of the diaphragm causes: A. a person to exhale. B. the size of the chest cavity to increase. C. air to flow from the lungs to the outside. D. compression of the lungs. is it B 2. The function of the large intestine is to: A. supply enzymes for digestion. B. ...

Biology
1. Muscles are grouped in antagonistic sets because: A. muscles cannot lengthen by themselves. B. muscles push but cannot pull. C. they do not like one another. D. there is an increase in metabolic efficiency if they are present in antagonistic sets. is it A 2. In most women's...

Biology
1. Contraction of the diaphragm causes: A. a person to exhale. B. the size of the chest cavity to increase. C. air to flow from the lungs to the outside. D. compression of the lungs. is it B 2. The function of the large intestine is to: A. supply enzymes for digestion. B. ...

Biology
1. Unprotected seeds are found in: A. cones. B. perfect flowers. C. imperfect flowers. D. fruit. im confused between A n D 2. The most harmful parasite for plants and animals is the: A. roundworm. B. protozoan. C. fungus. D. flatworm. is it A 3. Benthic organisms are found: A...

biology- photosynthesis
There is a distinct oscillation of CO2 during each year as CO2 is added to the atmosphere each winter or removed from the atmosphere each summer. Explain what specific cellular processes lead to these changes in CO2 level. You must explain what causes CO2 to be released to the...

biology
Explain how new species can originate without geographical barriers.

biology
In a laboratory population of diploid, sexually reproducing organisms a certain trait is determined by a single autosomal gene and is expressed as two phenotypes. A new population was created by crossing 102 pure–breeding (homozygous) dominant individuals with 98 pure ...

biology
In a population that is in Hardy–Weinberg equilibrium for two alleles, C and c, 16% of the population shows a recessive trait. Assuming C is dominant to c, state the percent of the population shows the dominant trait? Show your work. Thank you!

biology
In a population with two alleles, B and b, and the allele frequency of b is 0.4. Calculate the allele frequency of heterozygotes if the population is in Hardy–Weinberg equilibrium? Show your work. Thanks for any help in advance!

biology multiple choice
I am preparing my self for a biology exam and i am going through past papers. Unfortunately they do not supply us with the answers, which in one way is good.(since you have to actually work for your answers) All I am asking of you people is that you run over my answers and see...

biology
Why all enzyme work well in their own optimum temperature and optimum pH ? i need more explanation about why different enzyme have different optimum temperature and different optimum pH to react. i hope to get a long explanation for my essay that contain 5 marks.

Biology
Which of the following best predicts the response of a trait to artificial selection? VA VG standard deviation h2 H2

biology
Do all enzymes function within the different temperature range, like they do with pH?

biology
Post a 200- to 300-word response to the following: Many studies have been conducted on cerebral lateralization revealing different functionalities of the left and right hemispheres. Describe four methods for studying cerebral lateralization.

biology
Properties of life and recognizing living and nonliving things What does it take to be a living organism

Biology
Is there any biology websites for teens??? (NOT games! notes and quizzes to practice). The Science of Biology The Chemistry of Life Cell Structure and Function Photosynthesis & Respiration Something REALLY easy to understand(btw I'm going to the 9TH GRADE). please help (having...

biology
This question consisted of a pedigree which involves certain inbred individuals which you are going to identify. The inbred coefficient is for one of the first cousins named Stormy is F = 0.08. An individual called Shady is a parent. Question: Is Shady inbred? How did you ...

biology
Certain spider toxins work by inhibiting Ca2+ channels. Briefly explain how this works and what happens to the person.

biology
1. Enzyme competition occurs when: A. one type of enzyme reacts with one type of substrate. B. an enzyme does not react with a substrate. C. three different types of enzymes react with one type of substrate. D. an enzyme stops a reaction. is it C 2. The proton pump is ...

Biology
1. Some people get repeated fungal infections because they cannot destroy these dangerous microbes after their white blood cells phagocytize them. This most likely means that these people have __________ that do not work properly. A. ribosomes B. lysosomes C. mitochondria D. ...

Biology
Will you please check my answers? 1. Single-celled organisms that do not have a membrane-bound nucleus are called A. organelles. B. prokaryotes. C. Golgi bodies. D. eukaryotes. 2. In cells, a form of active transport is A. a sodium-potassium pump. B. osmosis. C. facilitated ...

Biology
Which is NOT a major function of proteins? A. Provides cell structure B. Stores energy for the cell C. Functions as regulator molecules in cellular activity D. Functions as carrier molecules is it D

Biology
1. A theory and a hypothesis are different in that: A. you must have a theory before you can form a hypothesis. B. a theory is developed as a result of broad agreement among scientists and a hypothesis is a much less substantiated idea. C. a theory is much easier to disprove ...

biology
Olive oil is an unsaturated fat. Does the Sudan Red Test differentiate between saturated and unsaturated fats?

biology
An example of assimilation is the: a. synthesis of carbon b. synthesis of proteins c. hydrolysis of water d. hydrolysis of oxygen I think it is B or C but I am not sure. help please

biology
Relate membranes to energy metabolism, redox reactions, and ATP synthesis in both eukaryotic and prokaryotic cells.

biology
i wanted to see the daigram colony

biology
a woman whose father had hemophilia and whose mother was normal married a man whose father did not have hemophilia but whose mother did . if the couple's first child was a son what are the chances that he would show the trait of hemophilia?

Biology
Calculate the % change in concentration of oxygen when the water temperature rises from 10degree C to 15degree C.show your working?

social science
how is biology related to tourism?

Biology
Hi My bio HW is asking what are the symptoms and host response for tuberculosis.... i have the symptoms but I need help with what the host response are.... Thanks

biology
Explain how life on earth is dependent on both polarity of covalent chemical bonds and hydrogen bonding. Reference water, proteins and nucleic acids in your answer.

Biology
Explain how life on earth is dependent on both polarity of covalent chemical bonds and hydrogen bonding.

Psychology Help Please
When rethinking a problem why do people do a social comparison? What school of thought did client centered therapy come from? What is the biology of love based on? If a person sees the glass half full, what type of outlook do they have? Human sexuality is influenced by three ...

Biology
What are the three main type of producers?

Math>> Help!!
Seats for Mathematics, Physics and Biology in a school are in the ratio 5:7:8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats?

Biology
Describe how you would prepare 10 mL each of 2 M, 1.5 M, and 1 M NaCl solutions from a 2 M stock NaCl 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 ...

biology
wer can i get synthetic plant hormones

Biology
How does the structure of Earth’s interior affect seismic waves?

biology
Alkaptonuria results when an individual has no functional HGD enzyme. Without functional HGD, breakdown of excess tyrosine stops at homogentisate. The accumulated homogentisate is polymerized by the enzyme polyphenol oxidase to a complex set of molecules called “...

Biology
What is the defferent of prokaryotic and eukaryotic cells

BIOLOGY!!!!!!
What is the reletive amounts of mRNA that will e transcribed if there is no promoter and enhancer?

biology urgent
Glucose is transported into a cell through a process of co-transport, where it is moved against its concentration gradient through a membrane channel. Moving any molecule against its concentration gradient requires energy, but these glucose channels do not require ATP or any ...

Sociology of Sports
Would Someone PLEASE HELP? 1.Deviant overconformity is associated with some forms of violence in sports. The roots of this violence are grounded in (d) A. a desire for self-fulfillment and personal satisfaction. B.a lack of loyalty to team rules. C.the desire to gain ...

biology
ap biology lab -what barriers might hinder the acquisition of plasmids

bio
I am doing the biology ap bacteria DNA transformation lab and I came up with a transformation efficiency of 150,000. I read somewhere that they should be between 2,000-8,000. is my answer way off? My group counted an average of 1529 colonies to begin with so i don't see how ...

Biology
I need help in tying 3 things from: cellular respiration, energy transfer, osmosis, ATP to the water cycle

biology
For each of these restriction enzymes, determine whether or not the enzyme would cut the normal, Mutant A, Mutant B, or Mutant C DNA sequences described in part (g) and select your answers in the table below:

biology department
Approximately how many mL of 5% BaCl22H2O solution would be required to precipitate all the sulfate if we assume that your samples are pure sodium sulfate? Assume that the density of the barium chloride solution is 1.00 g/mL

biology
4.3kj of heat energy stands for how many burgers ?

biology
A researcher develops a new drug that kills cells by preventing transcription. The most direct effect of the drug is to prevent cells from? A. making new DNA. B. exporting substances to the cytoplasm. C. making protein. D. breaking down substances in the cytoplasm.

biology
The nonliving matrix of the connective tissue through which the blood cells freely flow is the? A. plasma B. extracellular fluid. C. intracellular fluid. D. submucosa

biology
The scientific binomial name of a species is Canis vulpis. Which of the following is true? A. the species belongs in the family Canis. B. the species belongs in the genus vulpis. C. the species belongs in the genus Canis. D. the species belongs in the family vulpis.

Biology
What causes mutations in bacteria? and Can mutations affect plasmids?

Biology
Consider the close-up view of a segment of DNA undergoing transcription from left to right. Transcription begins at and includes the G/C base pair shown in bold green type.

Biology
How does the changes in the DNA code from CTT to CAT in the beta chain of haemoglobin affect cell activity?

Biology
If a normal man marries a normal woman whose father was colourblind, what are the chances that their sons and daughters will be colourblind? Colourblindness is a sex-linked trait that affects males more often than females. With the aid of a Punnett square, indicate the ...

Biology
Once blood picked up nutrients from the small intestine, it must pass through the liver via the inferior vena cava. Explain the importance of this pathway.

Biology
Once blood picked up nutrients from the small intestine, it must pass through the liver via the inferior vena cava. Explain the importance of this pathway.

Biology
An individual with blood type O receives type A blood. The phenomenon is agglutination. Can explain more?

Biology
true or false if an organism randomly develops a feature that gives it a survival advantage, then it will be more likely to survive than other organisms, and will also be more likely to produce offspring which also have this advantageous feature. Eventually, many organisms ...

biology
To produce human protein X in bacterial cells, the plasmid (vector) that is chosen should have a _______________ promoter, and the source DNA should be ___________________. Which of the following best completes the sentence above? strong, wild type genomic strong, mutant ...

biology
Alcanivorax is a naturally occurring oil-degrading marine bacterium that can quickly become the predominant microbe in oil-contaminated open oceans and coastal waters. To identify the genes important for the oil-degrading ability, you could attempt the following: 1) You might ...

biology
A plasmid (vector) designed for use in bacterial cells is different from a plasmid (vector) designed for use in yeast cells. Listed below are three DNA features found on both plasmid types. If the DNA sequence of each feature could be the same on the two different plasmids, ...

biology
A common first step in the making of a DNA library is to obtain DNA from many of your chosen organisms and cut this source DNA with a restriction enzyme. It is likely that some genes will contain sites for the chosen restriction enzyme, and in this case, your DNA library will ...

biology
Hemoglobin is a critical oxygen-carrying protein. The protein functions as a tetramer with two α-globin subunits and two β-globin subunits. Individuals homozygous for a specific single point mutation in the region that encodes the sixth amino acid in β-globin ...

biology
Consider the following 45 base-pair (bp) DNA sequence: 1 10 20 30 40 | . | . | . | . | . 5’-CGCACCTGTGTTGATCACCTAGCCGATCCACGGTG​GATCCAAGGC-3’ ||||||||||||||||||||||||||||||||||||||||​||||| 3’-GCGTGGACACAACTAGTGGATCGGCTAGGTGCCAC​CTAGGTTCCG-5’ You also ...

statistics
Paul received a score of 80 on a history test for which the class mean was 70 with a standard deviation of 10. He received a score of 75 on a biology test for which the class mean was 70 and the standard deviation was 2.5. On which test did he do better relative to the rest of...

biology
1. Which of the following statements does not describe a difference between the DNA of prokaryotes and the DNA of eukaryotes ? a.prokaryotic DNA is shorter and less complex than eurkaryotic DNA b. Prokaryotic DNA chains have two nucleotides, eukaroyotic DNA has four. c. ...

Biology Raynaud's Disease
Hey im doing a powerpoint presentation on this raynaud's disease, and could someone please give me some good sites to go through to get info abt this and please mention anything you know about the raynaud's disease as well, thanks.

Biology
1. Bone is formed from the deposition of __________ into connective tissue A. Calcium and Phosphate B.Sodium and potassium C. potassium and calcium D. Sodium and Phosphate E Actin and myosin 2. The major disadvantage of exoskeletons is A. Animal outgrows it B. it is not ...

Biology
Which of these systems is involved in connecting one body system with another? A. Integumentary B.Muscular C. Immune D. Digestive E. Endocrine I think its E

biology
1. The function of the circulatory system is to: A. Deliver oxygen and nutrients to every cell B. facilitate communication between different tissues c. Remove Wastes from tissues d. all of these e.none of these I believe the answer is D all of them

Biology
Is 9th grade biology hard? Is it interesting...?? I love life science but I just wondering if 9th grade biology hard??? I'm taking biology next year.

Biology
In lactic acid fermentation, ______ is _______ a) lactate...oxidized b) pyruvate...reduced c) ethanol...oxidized d) NAD+...oxidized e) NADH...reduced

biology
TRUE OR FALSE all mutations in a gene would have an effect on the protein encoded by that gene. please help! :)

Biology
The term "worm" is a description of a body shape. A worm had a long, thin body. Aew all worms in the same phylum? How do you know?

math
A textbook store sold a combined total of 462 biology and chemistry textbooks in a week. The number of biology textbooks sold was two times the number of chemistry textbooks sold. How many textbooks of each type were sold?

Biology
you are studying a single-gene locus with two alleles in a population that is in Hardy-Weinberg equilibrium. Examination of a large sample of individuals from the population reveals there are six times as many heterozygotes as there are homozygote recessive individuals in this...

biology
In a natural population of outbreeding plants, the variance of the total number of seeds per plant is 16. From the natural population, 20 plants are taken into the laboratory and developed into separate true-breeding lines by self-fertilization—with selection for high, low...

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