science, biology

40,352 results, page 55

Earth Science

1. What are one internal and one external source of energy in the Earth system? 2. Earth scientists assume that the causes of natural events of phenomena can be discovered through... 3. Science constantly creates new technology. Does this new technology always benefit society?

Earth Science

1. What are one internal and one external source of energy in the Earth system? 2. Earth scientists assume that the causes of natural events of phenomena can be discovered through... 3. Science constantly creates new technology. Does this new technology always benefit society?

Science

I need some ideas for a science project. I need to find a picture of an everyday object which has a similar job or function as that cell part. For example, the nucleus is like a brain. My list includes lysosome, golgi body, cell membrane nucleolus, mitochondrion, endoplasmic ...

AED

1. As a construct, what is your approach to teaching?How does inquiry-based learning differ from the tradional model, with the teacher as the source of all instruction? Provide exapmles of each style. 2. How can you provide relevant hands on learning ina science classroom when...

Biology

This is a 2 factor cross punnett square- An albino, nonhemophilic man, marries a normally pigmented, nonhemophilic woman whose father was hemophilic and whose mother was albino. What kind of children can they have and in what proportion? Hemophilia is a sex-linked trait.

biology

consider two plants with genotypes Rrtt and rrTt where red color is(R) is domiant over white(r) and being tall(T) is dominat over being short(t). complete the following punnett squares to determine the possible gametes each parent can produce

Biology

why is there no production of ATP when detergent is treated in a test tube with mitochondria? in Aerobic and anaerobic respiration what is the final metabolic breakdown of molecule? 1 pyruvic acid 2 acetyl coenzyme A 3 citric acid 4 reduced coenzyme FADH2 5) ATP PLEASSEEEEEEEE...

Biology please help anybody!

there's this a level question in a ten-year series book in 2008, the question asks what is the sequence in which it occurs: 1. polyadenylation 2. removal of introns 3. splicing exons 4. capping And the options given are: a) 1,3,2,4 b) 2,4,1,3 c) 3,1,4,2 d) 4,2,3,1 I've looked ...

Biology

Which one of the following organelles would be especially abundant in the pancreatic cells that produce digestive enzymes? A. rough endoplasmic reticulum B. smooth endoplasmic reticulum C. lysosomes D. microfilaments E. mitochondria Apparently the answer is not lysosomes, so ...

Human and Social Biology

A calorimeter was used to oxidise completely 2g of a food sample,causing a temperature rise of 5degrees C in 100cm3 of water(this figure includes the water equivalent of the apparatus). How much energy was present in the food sample(in joule per g)?

Biology

Distinguish between breathing and respiration , i wrote: Breathing is the process of taking in oxygen and eliminating carbon dioxide. Respiration is the breakdown of oxygen in the body- although both are needed for all living organisms Is this true? If not may you please fix ...

biology PLEASE ASSIST!!

1.The structure and functions of the cell are controlled by what??? 2.Explain why DNA is able to play a role in the transmission of hereditary information. 3.State TWO functions of DNA 4. Explain how genetic fingerprinting can be used to prove is the identity of the father of ...

What is a biology lab practical?

Is it a test on paper or can I look at notes and answer questions? Do I have to dissect something, have the TA ask me a question and answer instead of dissecting as a group? I've just been quizzing myself on parts of the animal in case we can't use notes, but I don't know how ...

A - G requirements

I mest up real bad my freshmen year, I took general sciene which doesn't help me get into university. Now I'm a sophomore and I just started taking Biology, how embarassing. Any advice on how I could catch up? Also, does anyone know if health counts for the A-G? I took health ...

statistics check

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 ...

Biology

Explain why ice forming within a living organism may result in its death. Candice/ Michelle (Whoever you are) I think if you read the link I left above for you, it will be clear. Hint* If ice expands when it freezes and the cell wall/membrane can't stretch, what's going to ...

biology pleaseehelp!

In order to produce many copies of a protein fast, the cell uses A. DNA replication. B. intron self-splicing. C. single-unit ribosomes for high speed translation. D. codon-anticodon reciprocal duplication. E. many RNA polymerase molecules to produce mRNA transcripts at the ...

English

I want to improve the flow of this sentence. I would greatly appreciate any insight, minor or major. Here is the sentence, which is intended as a thesis: L. Ron Hubbard, in founding Scientology, has created a dangerous contemporary cult that suppresses free speech, mistreats ...

Science

Which of the following are examples of science? Mark all that apply. A. a journalist writes a story about a man who became rich by buying stock on Tuesdays B.a woman chooses an item to purchase based on its packaging C. a farmer consults a weather almanac to decide the best ...

Biology

Explain the processes that take place in the stroma including the reactants going in and the products produced from these processes in (a) bright sunlight and in (b) darkness. (c) What happens over an extended period of darkness of many days? I don't understand this I didn't ...

Biology

To survive as an individual, all animals must maintain homeostasis. Which of the following is NOT a part of homeostasis? A.eliminating wastes from their body B. gathering and responding to information in their environment C. reproduction- to produce viable offspring D. ...

science

how do different liquids affect egg shells? Sounds like a worthy science project. Why don't you try some liquids and find out? Some might dissolve or soften them, some will change their color. wwell it depends on what type of liquid your useing like soda the acid in it will ...

Math

Diegos class planning a field tripfor 25 students.They will go to aquarioum and then to science museum. Each ticket for science cost $2 more than each ticket to aquarium. Lunch for each student is $5 additional. Write and expression for total cost of trio.Describle the meaning...

biology /cell analogy

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 ...

biology

I have another experiment that I am not clear about the results. Any help? Put water, hydrogen proxide, and manganese dioxide powder in test tube, see what happens. Then put sand in the mixture. Results? Then,put liver in it. What happens? Thanks for helping.

Biology

Which of the following cranial nerve nuclei is a branchial motor nucleus and is, therefore, found in an intermediate position in the brainstem tegmentum? oculomotor nucleus abducens nucleus dorsal motor nucleus of vagus Edinger-Westphal nucleus nucleus ambiguus

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

3) For each of the following characteristics, will the migration of the protein speed up, slow down, or remain unchanged if you do not add SDS? a)increase molecular weight of protein b) increase concentration of acrylamide c)decrease charge on protein d) increase surface area ...

Biology

3) For each of the following characteristics, will the migration of the protein speed up, slow down, or remain unchanged if you do not add SDS? a)increase molecular weight of protein b) increase concentration of acrylamide c)decrease charge on protein d) increase surface area ...

Biology

3) For each of the following characteristics, will the migration of the protein speed up, slow down, or remain unchanged if you do not add SDS? a)increase molecular weight of protein b) increase concentration of acrylamide c)decrease charge on protein d) increase surface area ...

Biology

For each of the following characteristics, will the migration of the protein speed up, slow down, or remain unchanged if you do not add SDS? a)increase molecular weight of protein b) increase concentration of acrylamide c)decrease charge on protein d) increase surface area of ...

Biology 101

What are the factors that cause cells to reproduce in mitosis and meiosis depends on the cells. there's a huge difference between a livwr cell, nerve cell, and a bacterial cell. probably your instructor is looking for answers like: growth, food supply (nutrients), injury, ...

Help please!!

I am currently inrolled in a biology class, I pay attentionin class, I take all the notes possible, I study for the test at least 4-5 days in advance. I am putting 110% of my effort into this class. I am an A student but I am getting d's on the tests. I don't know what to do. ...

Biology

When a grouse eats berries, the berry seed are eliminated as waste materials and may be dropped in another part of the forest where they may sprout and eventually grow into new berry plants. How would you classify the symbiotic relationship between the berry plant and the ...

biology

what cells are involved in the diffusion of substances? (Broken Link Removed) All cells are involved in diffusion, across thier surfaces and between the intracellular orgelles and the intracellular fluid.

biology

Think of diets from an energy perspective. Where is the energy coming from, and how many organisms does it move through before it gets to the human? In what form is most of the energy in when it gets to the human, and how is that energy unleashed by the body?

Biology: Genetics

How do nucleotides and hydrogen bonds affect the structure of DNA? Maybe something like nucleotides make up DNA and hydrogen bonds hold the nitrogenous bases together? Can you help me explain?

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.

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.

biology

Genetic question If a man with blood type A, one of whose parents had blood type O, marries a woman with blood type AB, what will be the theoretical percentage of their children with blood type A?

Biology/Physiology

What organs of the human body are involved in the urinary system and what is the specific purpose of those organs? How does the urinary system interact with other systems within the body?

Biology

Suffering from acute glomerulonephrtis? if a person has acute glomerulonephrtis what would be the test result (negative or positive)for. a) urine color b) biuret test c)test for iron d)test for urea

Biology

What is the function of lactose in the body? I know what lactose is, but I'm having trouble finding if it does anything in the body (give energy...?) And also, what is the function of fructose in plants? I'm having the same problem.

Biology

Assume that a cell culture has a density of 10^8 cells/mL. You transfer 20 microliters of this culture onto the microscope slide. How many cells do you expect will be in this 20 microliters drop you placed under the microscope?

Biology

What could be a benefit for a plant that can switch between cyclic and non-cyclic electron transport? Think about the products of electron transport and what products are needed for the Calvin Cycle.

biology

A tall pea plants bearing violet flowers is crossed withshort pea plants bearing white flowers .work out the f1 &f2 generations.give f2 ratio

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

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

biology

In Angus cattle, the fur color black (B) is dominant to the color red (b). If we cross a homozygous dominant bull with a homozygous recessive cow is it possible for the offspring to be red?

Maths lit,History,Life Science and B.S.

What career should I take with these subjects. Maths Lit, Business Studies , Life Science and History?

science

1) what is the mass of 10 cc of water? 2) why does a block of wood float on water? 3)how and why can density by used to identify an unknown substance? 4) describe the relationship between density, water, an d things that float please help me just need these answers to study ...

Anonymous -- Science question

Anonymous -- Please click Post a New Question and then ask your question. Please be specific about the purpose of your science project, your grade, and the type of project that interests you.

biology

If two parents who's blood types are both B produce a child that has blood type O, what can you say about the parent's genotypes? A. one is ii B. one is IBi C. both are IBi D. nothing, this is impossible isnt this C?

BIOLOGY

A reference calls for the use of "one litre of 0.1 molar acetate buffer pH 5.2” Calculate the amounts of sodium acetate and acetic acid required to make up this buffer, given that for acetic acid Ka = 1.8 x 10-5

biology

Suppose you have monohybrid snapdragons in your garden and you find that they produce red seeds to white seeds in the ratio of 3:1. If the alleles are designated R (red seeds) and r (white seeds), what are the probable phenotypes of the parents (P1)?

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

will the impact of removing all the organisms in a trophic level be different for different levels?can the organisms of any trophic level be removed without causing any damage to the ecosystem?

Biology

What is the effect of substrate concentration on enzyme activity? How does enzyme activity change as substrate concentration decreases? Explain your observations by discussing this reaction on a molecular level.

Biology

Prokaryotes produce 38 ATP per glucose molecule and eukaryotes produce 36 ATP why? I know that the two are lost, but I am not sure if it is in the processing of the sugars or the transport? Does anyone know where these two are lost or why?

biology please help

explain how the small intestine is speicalized for digestion and absorption my answer the small intestine, is where the major part of digestion and most of the absorption takes place.

biology

After a meal rich in starch, the blood with the highest concentration of sugar would be in what blood vessel? What are the 2 blood vessels containing blood with the highest concentration of oxygen?

biology

The height of a man grows on cell division.During cancer there will be uncontrolled mitotic division.That is cell divides continuosly.Does the height of the person increase when he get cancer.

biology

Butane gas (C4H10) is burned to produce carbon dioxide and water vapour. If 12.8 mol of butane are completely burned, how many moles of water vapour are produced?

Biology

How do nucleotides and hydrogen bonds affect the structure of DNA? Maybe something like nucleotides make up DNA and hydrogen bonds hold the nitrogenous bases together?

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.

Biology

Alright, last ones on the test: 37. Hyphae a. increase the surface area-to-volume ratio of the fungus b. have slender filaments c. allow for efficient uptake of nutrients d. all of the above D? 38. In which process do tRNA molecules attach amino acids to the growing chain ...

biology ms sue

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 ...

Science

Astrologers relate the location of stars and planets to events in human lives. Many years ago, people classified astrology as a science. Why do modern scientists consider astrology to be a pseudoscience A. Astrology does not involve the use of telescopes. B. Astrology does not...

biology

Could a man with type B blood and a woman with type AB blood produce a child with type O blood? Explain

Biology

Are any of these anabolic reactions? a. making starch from many glucose molecules b. making proteins from many amino acids c. making many glucose molecules from many glycogen molecules Since this is not my area of expertise, I searched Google under the key words "anabolic ...

Biology

Why does Beta Glucose chains have more weak bonds between the chains than there are between alpha glucose chains?

IB Biology/Biology

Web feet is a sex linked characteristic in Dingbats. Female Dingbats are XX and males XY. A webbed male is crossed with a homozygous normal female and the baby Dingbat is a female with normal feet. Deduce whether the web allele is dominant or recessive. If their next baby is a...

biology

How is recombinant DNA technology used today? I have to use bacterial chromosomal or genomic DNA,plasmid,restriction enzyme, vector, sticky end, transformation, DNA ligase, gene cloning,restriction fragment, and restriction site in the answer.

biology

The mouth, small intestine, and kidneys have functions that involve the a. digestion of food, synthesis of vitamins, and filtering of the blood. b. intake, digestion, absorption, and elimination of food and its wastes. c. secretion of bile, digestion of food, and reabsorption ...

Biology

Why does the blood go from the lungs to pick up oxygen and then return back to the heart to be pumped around the body ? Why can't it just get out of the lungs from the first pump and then pick up an artery and go around of the body instead of returning ?

Biology

Transport Through the Cell Membrane Type of Transport Requires Name of Transport Protein Used Energy Transp- Input from ort Cell? Simple Diffusion Facilitated Diffusion Active Transport

Biology/Chemistry

Consider that the human brain weighs about 1 kg and contains 10^11 cells. Assuming that each cell is entirely filled with water, and knowing that 1 cm^3 of water weighs 1 g, calculate the volume of a brain cell (in picoliters).

College Math

Movies A survey of 350 customers was taken at Regal Cinemas in Austin, Texas, regarding the type of movies customers liked. The following information was determined. • 196 liked dramas. • 153 liked comedies. • 88 liked science fiction. • 59 liked dramas and comedies...

giving up

i'm depressed that no-one has answered my science question so i'm giving up and i don't care if i fail my science because it will be all googles fault the only thing i know about the xenon 135 is that it's a tennis/squash racket and i needed the element xenon 135 grrr p.s....

Genetics (science)

Please answer my science question (in detail if possible) Q: in rats the gene for black hair colour is dominant over the gene for brown hair colour. Draw a plunnet square and use it to predict the fractions of both the genotypes and phenotypes produced when two heterozygous ...

Biology

In the course of performing and interpreting daily vaginal lavages in a rat, a rat that had previously been exhibiting regular 4 day cycles starts a prolonged period of acyclicity which is dominated by cornified epithelial cells. A male rat also co-habits her cage, but is ...

science

i need help with these questions because i need to write a report on it helpp please What are the implications of stem cell reasearch for today and future generations What are stem cells? What are they capable of? How are they used in science/ medicine presently? What ...

biology

When an impulse moves down the axon, a. sodium ions first rush out of the cell. b. a small part of the axon momentarily reverses its polarity. c. the resting potential of the cell does not change. d. potassium ions are pumped into the axon. B?

Biology

Why can viruses of the family of the Poxviridae be genetically modified more easily than viruses of most other viral families? A. Because their genome is smaller. B. Because their genome is made of DNA. C. Because their genome mutates more slowly. D. Because their genomes have...

biology

i need help writing sentences with the following words? autotroph diversity eukaryote heterotroph indigenous infer prokaryote stimulus sustainability I would look the words up to be certain on the meanings: I would use your text definition first, if available. We can check ...

Microbiology- Biology 205

Can someone please help me with this question.... When you blow bubbles into a glass of water, the following reactions take place: H2O + CO2 --a--> H2CO3 --b--> H+ + HCO3- 1. What type of reaction is a? 2. What does reaction b tell you about the type of molecule H2CO3 is...

College biology

In testing synaptic transmission, you found that there were 300 failures in 1000 trails of stimulating a presynaptic neuron. The average EPSP size was .7 mV +/- .2mV (mean +/- SD), and the average 'mini' EPSP size was .6mV +/- .1mV. Does the synapse obey Poisson statis...

college biology

In testing synaptic transmission, you found that there were 300 failures in 1000 trails of stimulating a presynaptic neuron. The average EPSP size was .7 mV +/- .2mV (mean +/- SD), and the average 'mini' EPSP size was .6mV +/- .1mV. Does the synapse obey Poisson stati...

Biology

Research and discuss an event in Charles Darwins' life that lead to his theory of evolution. Events could be directly in Charles Darwin's life or could be individuals whose ideas Darwin incorporated into his work. Besides the voyage to Beagle and the visit to the Galapogos ...

biology

Dihybrid cross what is the phenotype distribution of each: Dominant green seeds Recessive yellow seeds Dominant purple flowers Recessive white flowers ?

Biology

Can you help me find statistics on the amount of people who suffer with genetic disorders/diseases every year or the amount of people who die from genetic disorders. Thanks a million.

biology

three and 14c have different number of isotopes of carbon 12c 13c and 14c have different number of electrons protons neutrons

Math 156

On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the student got 32 questions correct. What was the percent of increase?

biology

In sheep, the allele for white wool (A) is dominant over the allele for black wool (a). How would you determine the genotype of a white ram, or male sheep?

biology

1.can introduced species strengthen the immune system of the native species 2. can an introduced species change thec composition of the natural habitat so it is unsuitable for the native species

Science

We are doing a science fair and we are unsure of what our aim/investigation should be. However we know we want to do something with fingerprints. What can we do? Why don't you examine the prints of twins? Why don't you examine the prints of twins? What? Compare the ...

science

I have a science experiment and I'm not sure how to do this or have all the materials to do it can anyone help? For this portfolio, you will design an experiment to investigate the relationship between the number of coil loops and a strength of a solenoid. Once you have an ...

Science

What's the vocabulary word for the definition (application of biological science to create new products) http://en.wikipedia.org/wiki/Applied_Science

Physical science

Physical science a 2.0g metal ball that carries a charge of 10 uC is placed into an electric field. the ball at rest at point A is accelerated to point B with a speed of 1.0 m/s. what is the electric potential difference between point A and point B?

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 ...

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