science, biology

40,352 results, page 54

9th grade biology honors

What would happen if you placed a grape in a bowl with highly concentrated sugar water? and also i need help with this question: "Talking about osmosis, what would happen to a jellyfish placed in a freshwater lake?

BIOLOGY

Botulism (a toxin produced by bacteria that causes food poisoning) and curare (a natural poison) inhibit the action of acetylcholine. What symptoms would you expect to find in someone exposed to botulism or curare? Provide an explanation for the symptoms.

9th Grade Biology

Assume that the fish have an average mass of 280g. The average caloric value is 8kcal/g. The heron is able to digest 60% of the fishes’ mass. How many will it need to eat to sustain its caloric intake of 3,000kcal/day?

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/help please

Can you help me find an everyday object that has a similar function as : 1-Golgi Bodies an example 2-Lysosome an example kitchen garberator 3- peroximes example a gym 4-Vesicules/vacuoles an example water bottle 5-Cytoskeleton an example 6-Microvilli an example Can you help me...

biology

Can you help me find an everyday object that has a similar function as : 1-Golgi Bodies an example 2-Lysosome an example kitchen garberator 3- peroximes example a gym 4-Vesicules/vacuoles an example water bottle 5-Cytoskeleton an example 6-Microvilli an example 7- Cilia an ...

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 ...

Biology

Differentiating the affects of environment vs the affects of DNA and how they affect "who we are" is often quite difficult. Other than 'Twin Studies' do you have any suggestions of how we can study which one - environment or DNA affects each trait more?

biology

Data Table: Rate of Photosynthesis Trial # Number of Bubbles/Minute 1 2 3 4 5 6 7 8 9 10 Trial 1 1 4 6 9 10 12 13 15 18 20 Trial 2 3 7 11 14 16 20 25 28 32 35 Making a Graph 2. In the space below, make a line graph showing the data from both trials

BIOLOGY!

In order to keep veggies crisp, grocery stores use coold water or ice. Which would keep veggies crisper, tap water or distilled water? Explain. I have no idea...

Biology

1. Why must DNA be able to make copies of itself? 2. Define DNA replication? 3. What is the first step that must occur in DNA replication?

biology

I understand that a prokaryotic cell has ribosomes smaller than 70s. But what i don't understand is what 70s accutually means. Please could someone explain what 70s means to me? thank you

Biology!!

Would a cell make enzymes for other cells? For example, would a cell make a lysosomal enzyme and send it to a different cell?

biology

The length of DNA HELIX occupied by one nucleotide pair is 3.4 angstroms. What is the length in angstroms of this unknown DNA fragment? How do you calculate Angstroms?

Biology

If you cross 1 inflated pea pod with a constricted pea pod and all of the offspring turn out inflated,is inflated dominant or recessive?

Biology

How can NaHCO3 function as both the acidic component of the NaHCO3/Na2CO3 buffer system and as the basic compnent of the H2CO3/NaHCO3 buffer system?

Biology

During transcription, when RNA nucleotides form base pairs with the DNA template, does this mean that RNA nucleotides and DNA nucleotides pair up?

Biology

My AP Biology class is exploring alpha amylase production in germinating barley seeds. There are three treatments the seeds, or more specifically the half-grains, are put in. 1) half grains with no embryo and no GA 2) half grains with an embryo present 3) half grains with no ...

Science - Mercury

So I'm in the middle of working on a science portfolio and it says: How will you overcome these challenges with the design of your spacecraft? you see I'm planning my own mission to space and I'm traveling to mercury, but I don't know how my spacecraft should overcome the ...

6th grade science project

My 1st science project and we have something to turn in each week from now till the science fair. this week it is the variables. Project from science buddies. I am doing-Ocean Currents: modeling the 'Global Conveyer Belt' in your Kitchen. Am I correct in my experimental design...

GED

Is the English Writing test the most difficult GED test? I find Math easy. Am I required to memorize the Science and Social Studies? or will I be provided information and is the Science and Social Studies actually a reading test? Thank You in Advance.

biology

What is the relationship between mass, weight,and gravity? Mass and gravity determine your weight? correct

BIOLOGY

Is DNA found in the nucleus, cytoplasm, or both? Is RNA found in the nucleus, cytosplasm, or both?

Biology

What kind of animals have eggs that contain yolk? Do all eggs have yolk?

Biology

A plant's cell wall is made of cellulose fibers. What is the purpose of a plant's cell wall?

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

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 the radiometric dates of: Homo sapiens, stone tools, sabre toothed cat, wolly mammoth, apes, whales, horses, dinosaursflowering plants, birds, earthworms, reptiles, spiders, sharks, amphibians, land plants, jawless fish, jellyfish bacteria and photosynthetic organisms?

biology

I have 2 problems/questions I am unsure of the answers. 1. how would you demonstrate the Valsalve maneuver using the model lung? 2. If a woman is breathing rapidly and deeply after exercise, would TLC, RV, TV, IRV, and ERV stay the same, increase or decrease? Thank you for any...

Finite Math

A biology quiz consists of 10 multiple -choice questions. 7 must be answered correctly to receive a passing grade. If each question has 4 possible answers, of which only one is correct, what is the probability that a student who guesses at random on each question will pass the...

earth (or Biology?)

You collect some pond water and filter out the different organisms into separate jars. You add no food to the water, but one kind of organism is still alive long after the others have died. That species is best described as being _________.

Geography/Science

Science is the literature of truth? in other words, Science is knowledge socially produced... I need some opinions, do you agree or disagree, why? I choose disagree because even science has and will sometimes come to wrong conclusions. Thank you for using the Jiskha Homework ...

Biology/ms. sue

ms. sue help =-(

Biology

Describe two practical applications for being able to extract DNA from cells. Genetically engineering insulin producing bacteria Crime lab testing of blood (white cells have DNA) and semen what are some biome characteristics for a freshwater wetland

Biology

Ok i have three questions that i can't find anywhere... 1. Carbon dioxide and water are excreted here during exhalation. 2. Structures in the skin which excrete water. salts, and some urea. 3. Removes toxic substances from the blood and converts excess amino acids to urea. ...

Biology

Hi, I tested the three most sensitive areas of my body and it was the fingertip, the tounge and the lower lip, and the question asks me "why do you think it is so?" I researched everywhere but cant find the answer probably because there are different sensitive areas other ...

biology

Which of the following words or phrases describes the heterotrophic bacteria, the cyanobacteria, both or neither? a.lack of nuclear envelope b.photosynthesize similarly to green plants c.possess a cell wall d.eukaryotic cells e.symbiotic relationships f.saprobes I know that d-...

Biology

20. Three common characteristics of adult vertebrates are a. skull, notochord, and complex organ system b. backbone, segmentation, and open circulatory system c. two pairs of jointed appendages, cephalization, and internal skeleton d. hydrostatic skeleton, bilateral symmetry, ...

Biology

20. Three common characteristics of adult vertebrates are a. skull, notochord, and complex organ system b. backbone, segmentation, and open circulatory system c. two pairs of jointed appendages, cephalization, and internal skeleton d. hydrostatic skeleton, bilateral symmetry, ...

biology

You are gardening and accidentally puncture your arm with a nail that was in the soil. No significant occurred but your arm was swollen. Recall that soil contains many microorganisms that could be pathogenic. Describe in detail the nonspecific and specific mechanisms that ...

biology

find an instance of an ecological “mess” that has taken place in your city/county/region. Outline the history of the problem – what caused it? What is being done to resolve the problem? Suppose that you had been in charge of the situation. What might you have done ...

biology

please help me with these to questions! The trait that viruses share with living things is the ability to a. adapt. b. use food. c. respond. d. reproduce. and Some viruses cause the host cell to reproduce both itself and the virus. Groups of these cells become a. polio. b. ...

Biology-Ecology

Multiple choice: For a natural ecosystem to be self-sustaining, many compounds must be: 1. converted into new forms of energy. 2. cycled between organisms and the environment. 3. permanently removed from the environment. 4. changed into fossil fuels such as oil and coal

biology

After a family picnic, Ella dumped the ice and rock salt from the ice cream maker in the back yard. That area of yard now contains dead, brown grass. Explain why this happened, and use the words hypotonic, hypertonic, and plasmolysis in your explanation

Biology

Hormones are _____? a) produced only in response to environmental stress b) are all under the control of the pituitary gland c) signals that must interact with DNA in order to be effective d) always proteins I feel like it is b) because hormone receptors are always proteins, ...

Biology

Hormones are _____? a) produced only in response to environmental stress b) are all under the control of the pituitary gland c) signals that must interact with DNA in order to be effective d) always proteins I feel like it is b) because hormone receptors are always proteins, ...

biology

suppose some natral disaster occured and a speices of finch is forced to relocate from its original island where it dined on cactus flowers to an adjacent island with many fewer cacti but an over abundance of orchids what would be the imediate consequences to the speices in ...

Biology

Evolution by artificial selection is a common way by which people breed plants and animals to have characteristics that we find desirable. Imagine that you are working in a lab where scientists are trying to breed a strain of apple that has much higher sugar content. How might...

Biology

How are proteins, lipids, and polysaccharides similar? A) They contain the same atoms are types of bonds between atoms. B) They are natural polymers composed of repeating monomeric units. C) They are formed during exergonic metabolic reactions in a cell. D) They have ...

Biology Lab gr 12

hi, i did this lab, from this website and I was wondering if anyone could come up with 3 sources of error, and they can't be human error. Thanks! You are saving me! Seeing as I am not allowed to post to the website :(, search on google liver lab with sand, and it is with a ...

biology

two reasons potassium is more concentrated in urine than in the filtrate why are blood cells and proteins usually not found in filtrate? why are glucose and other nutrients found in the filtrate along with urea and other wastes?

BIOLOGY

A high-powered microscope that produces an image from scattered secondary electrons is the a. immunofluorescence microscope b. bright-field light microscope. c. transmission electron microscope (TEM) d. scanning electron microscope (SEM). e. confocal microscope.

Biology

Suppose you have monohybrid pea plants in your garden and find that they produce round seeds to wrinkled seeds in the ratio of 3:1. If the alleles are designated R and r, respectively, what are the probable genotypes of the wrinkled seeds produced by your plants?

AP Biology

The type of learning that is involved in predator/prey interactions where an alteration in behavior is a response to stimulus is called? A. Habituation Learning B. Cognitive Learning C. Instinctive Learning D. Associative Learning E. Non-associative Learning Please, answer A.S...

AP Biology

They type of learning that is involved in predator/prey interactions where an alteration in behavior is a response to stimulus is called A. Habituation Learning B. Cognitive learning C. Instinctive Learning D. Associative Learning E. Non-associative Learning I believe it can ...

Honor Biology

In an experiment, plants were grown under colored filters that allowed equal amounts of light of different colors to strike different plants. Under which filter do you think plants grew the slowest? Why?

Biology

Suppose you have monohybrid pea plants in your garden and find that they produce round seeds to wrinkled seeds in the ratio of 3:1. If the alleles are designated R and r, respectively, what are the probable genotypes of the wrinkled seeds produced by your plants?

biology

The agricultural research facility during a research accidentally changed the DNA sequence of a wheat plant from GCCATGTT to GCGTACTT and this mutation resulted in a stronger plant variety. What kind of mutation did the plant undergo?

biology

The agricultural research facility during a research accidentally changed the DNA sequence of a wheat plant from GCCATGTT to GCGTACTT and this mutation resulted in a stronger plant variety. What kind of mutation did the plant undergo?

biology

What part absorbs light and converts it into nerve impulses What part bends light that enters the eye so that what you see is focused on your retina What part transfers the image the eye sees to the brain for perception

Biology

How does chloroplasts move when placed in a different solution? I understand that chloroplasts are just randomly scattered through out the cytoplasm, but what does placing the cell in a different solution that can be hypotonic or hypertonic affect the placement of chloroplasts?

Physical Science

Hello! I need help with this science questions. Thank You! 2. One of the reasons E=mc^2 is important to us is because it explains how our sun produces huge amounts of energy through nuclear fusion of hydrogen atoms. Use this example to describe the relationship between the ...

science need help

So I have a portfolia for science and we have to make a food web and it has to be about animals native to were we live but I live in broken arrow and I just moved here so I know nothing like that and everytime I try to do the research I can never find anything so do any of you...

Biology

Researchers working on Alzheimers disease identify a gene which may help treat the condition., but use a shortened version of the gene ..which codes for all necessary amino acids .. can anyone explain how the shortened version may be obtained .. If any could flag the main ...

Advanced Biology

At the end of the Cambrian Period, fossil evidence indicated that: A.) a great adaptive radiation of amphibians occured B.) amphibian species reached their greatest number C.) most amphibian species became extinct d.) amphibians first appeared

Biology -Please

Can someone give me a web site that shows the internal diagram of a chicken wing: I need the tendon, ligament and cartilage. I have been looking a long time for chicken wing and even birds but can't find what I need. Thanks

biology

Need help with FOV area (mm2) totally confused? im confused i have the FOV diameter they are: 4x = 5 10x = 2 40x = 0.5 a classmate told me she thinks the area for 40 x is: pi(5/2)^2 = 19.6 not sure if that's true or how to do it for the low and medium, magnification. please ...

Chemistry - Biology

Explain why glucose is improtant to humans ? Ans:Glucose is important to the body cecause it helps the reporduction of cells, coposition of proteins and nucleic acids foundin all cells. It helps growth and repairs tissues . Is that correct??

biology

Small gene big plasmid Question 2 Part E wrong. Question 2 Part F Determine the DNA sequence of PCR products. I do not understand how to handle this problem. On home works they were wrong and the solutions were confusing. Please give me a clue.

Biology

When the CO2 concentration in the cells of a C3 plant is low compared with the O2 concentration, an enzyme combines RuBP with O2 rather than with CO2. What effect would this enzymatic change have on photosynthesis? Under what environmental conditions would it be more likely to...

Biology - Diversity

A scenario where bacteria will undergo sexually reproduction instead of taking the "safe route" and reproducing asexually. I know that they reproduce sexually when conditions are not favorable and will enter a dorment stage until conditions get better but what scenario would ...

yo help!

k PGAL may be converted to glucose phosphate right? what other products can be produced???? Glyceraldehyde 3-phosphate can be converted to dihydroxyacetone phosphate, and these two molecules can be joined by aldolase to form fructose 1 ... glyceraldehyde 3-phosphate can be ...

science

I'm in 5th grade and I'm doing a science project on if seawater can be desalted by freezing... I tested three cups of seawater, each with different times in the freezer.. I have my control which is the seawater at room temperature... What do I chart on my bar graph... do I ...

Science

Hi! I'm in 8th grade science 8-B in Connections academy. I have a question that I'm stuck on. Can anyone help me? Thx! 2. Where do most Earthquakes occur most often? Why I am taking a guess that areas such as California have more earthquakes than most. I don't know why areas ...

computer science

How can i create my computer science project which is to draw a game and make a file on your game which you can create?

Science And Technology Engineering Mathematics

Do you know some site where can I look for Science And Technology Engineering Mathematics books?

Science

lesson 9: energy and the environment unit test science 8 A Unit 4: Energy and the environment Please HELPPPPPP!!!!!!!

math

Eighty students participate in an after school enrichment program consisting of science and creative writing. If 540 of the students take science and 45 take creative writing, how many take both subjects?

European History

Explain the role of science and empiricism in reshaping Europen cities in the nineteenth century. How did advancements in science and technology improve the lives of the working class in Europe? These sites may be of help. http://en.wikipedia.org/wiki/Modern_philosophy http://...

biology

which of the following is an example of human-caused durbance to an ecosystem a. a tsunmi destroys a coastal forest and causes flooding b. a river is diverted to irrigate farmlands during a drought c. after a volcanic eruption, global avarage temperatures lower*** d. the snow ...

biology

please help me unscrample the following words: (the space means thate the anagram has two words in it, but the space is not necessarily at the space) rmns teizysecntiore nt roetssieitrsic id ksdxlne so derrecisgntdie Thank you very much for your time! -Lily ...

biology

how does the life cycle of hatena compare to the origin of eukaryotic cells as noted in Margulis’ Endosymbiotic Theory? something about how one life form engulfs another and incorporates it, evolving until it becomes dependent on it and has created an entirely new life form?

AP Biology

What are the four basic levels of ecological study, and what is the focus of inquiry at each of these levels? I don't know what it's asking to start with and can't find anything relevant online, in my textbook or in my study guide! Since it says levels, I think it might be 1) ...

biology

1. We share certain cells with other animals. In birds, these cells are formed in the bursa of Fabricius. Name these cells. 2. Differentiate between plasma and serum. 3. State the different proportions (in %) that each neutrophil is present in the blood. neutrophil eosinophil ...

Biology

Hi can someone please help me with this? What are the major advantages and disadvantages of an arthropod's exoskeleton? For the advantages I have provides framework for support, protects soft body tissue and slows water loss in animals that live on land. but as for the ...

math

The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were measured for 10 students in a beginning computer-science course. The results were as follows. (Give your answers correct to two decimal places.) x 7 10 19 9 20 22 6 ...

statistics

The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were measured for 10 students in a beginning computer-science course. The results were as follows. (Give your answers correct to two decimal places.) x 7 6 9 11 11 5 14 8 ...

Biology

Can someone explain allopatric speciation and sympatric speciation. I know that allopatric speciation is because of geographic isolation. I don't understand sympatric speciaiton, though.

biology

which region produce the most fish A the Indian ocean B the Atlantic ocean C the pacific D the Atlantic an Indian ocean e none above

Biology

The gene for color blindness in humans is found on the X chromosome. A boy has a color-blind father. Will the boy be color blind? Explain.

Grd.10 Science

So i did a science lab today, and i am supposed to come up with the skeleton equation for it The chemical reaction is decomposition (starting with one compound that will break off into 1 or more compounds after reaction) This is what i have so far : Cu (CO3) ---> CO2 + ____...

science Help for little brother

I have no clue how to do this... For a science fair experiment, you decide to testa cartain type of plant to see how well it can grow when it is kept out of sunlight. For two weeks, the plant leaces stay greean then they begin to look yellow. Use the terms photosynthesis, ...

Biology

What will happen when deionized water is added to red blood cells and then left to sit for 15 minutes? Will the blood cells mix with the water immediately and make a paler solution or will they be more dense than the water and sink to the bottom?

college biology-drug metabolism

You are interested in examining the metabolism of a new drug that has been developed in your company. Briefly describe how you would determine whether cytochrome P450 is involved in metabolizing the drug, and if so, which subtype is involved.

biology

A sceitists gradually increases the amount of carbon dioxide available to a plant. The plant's rate of photosynthesis increases at first, but then levels off. What else might tyhe plant need to further increase its rate of photosnthesis?

Honors Biology - URGENT!!!

In an experiment, plants were grown under colored filters that allowed equal amounts of light of different colors to strike different plants. Under which filter do you think plants grew the slowest? Why?

Biology

1.The four rows of data below show the boiling points for a solution with no solute, sucrose (C12H22O11), sodium chloride (NaCl), and calcium chloride (CaCl2) (not in that order). Which boiling point corresponds to calcium chloride?

Biology

You have a stock solution with following components: glucose: 44 g/L NaCl: 191 g/L Tris Buffer: 275 g/L You mix 71 mL of the solution with water and bring the resulting solution to a final volume of 750 mL. What is the final concentration of glucose in g/L?

MATH

LAMONT IS REQ TO READ 1 BIO, 1 SCIENCE, AND 1 POETRY BOOK EACH MONTH. HIS BOOK CHOICES ARE: 2 DIFF BIOS 3 DIFF SCIENCE 3 DIFF POETRY HOW MANY COMBINATIONS OF REQ BOOKS ARE POSSIBLE?

language arts

Which sentence is punctuated correctly? a)Briana, my partner for the science project had some great ideas. b)Briana my partner for the science project, had some great ideas. c)Briana, my partner, for the science project had some great ideas. d)Briana, my partner for the ...

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