science, biology

40,352 results, page 56

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 ...

biology

I need a site where I can find these ff microscopic images: a. allium cepa 1. interphase 2. metaphase 3. prophase 4. anaphase b. paramecium 1. interphase 2. metaphase 3. prophase 4. anaphase thanks in advance... facstaff.uww.edu/mckinnoj/Bio1Lb1bCell.doc

biology

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

Biology

The process that traps solids in the cell membrane and brings them into the cell is called: pinocytosis phagocytosis ion pumps I think it is phagocytosis because pinocytosis brings in fluid and dissolved substances. I'm not sure if I'm right

Biology

Which of the following will happen if mRNA fails to be translated? A The cell's nucleus will produce more chromatin. B. Ribosomes will not be able to create protein. C. Mitochondria will release ATP. D. The cell will produce more mRNA I think it's B

Science

I have to do an assignment on designing an animal that has adapted to life in the waters of the dead sea. But nothing can live in the dead sea so I don't know what to do. Can anyone help with suggestions? What about a micro organism? There are bacteria that can live in the ...

mathematics(pure), life science, business,tourism

Hi i need help with career choice. I am currrently Grade 9. I choice the subjects Life Science, Buisness,Tourism and Mathematics(pure) Where can this lead me into? And what College/university can i study at? Please help if any potions available. Thnx

Biology

I am doing a chart on function and structure and i am stumped by this question Modified cell products must arrive to specific docking sites—where they are necessary— What structure tells the vacuole to dock where it needs to? - Would this be the nucleus, the nucleus has ...

biology

At one time the continent of Australia was connected to Asia. About 50 million years ago Australia became separated. It has many unusual animals not found elsewhere, such as the Kangaroo and the Koala bear. Using the concepts of geographic isolation and gene pool , explain why...

Biology

In man, muscular dustrophy , is inherited as a sex linked recessive , a couple , both of whom are normal, have five children, three boys and two girls , the oldest boy is beginning to show symptoms of the disease, what could you tell them about the chances of their children ...

math (stats)

A biology professor gives a surprise quiz consist of a true/false question followed by a multiple choice question with four possible answers. If both questions are answered with random guesses, find the probability that both responses are correct. Please show your work.

Biology

What are two traits of an information source that may indicate the information given is scientifically unreliable? Answer: peer review does not necessarily indicate that the other field expert reviews are in agreement with conclusions of the original writer, and a well ...

Biology

What are two traits of an information source that may indicate the information given is scientifically unreliable? Answer: peer review does not necessarily indicate that the other field expert reviews are in agreement with conclusions of the original writer, and a well ...

Biology; PLEASE I NEED THIS ANSWERED QUICKLY!

1. Fill in the five levels of human body organization. ~~~ Not sure what it's asking for me to do. Is it asking for me to name the most important body systems? Because in that case EVERY SINGLE ONE comes to mind. Just need a simple explanation and I'll be on my way. Thanks in ...

Biology

The polymerase chain reaction (PCR) is useful for: A) making many copies of a small amount of DNA B) creating recombinant plasmids C) analyzing a person’s fingerprints D) cutting DNA into many small pieces E) allowing restriction enzymes to cut DNA at palindromes I can't ...

Biology

You wish to produce a human enzyme, protein A, by introducing its gene into bacteria. The genetically engineered bacteria make large amounts of protein A, but it is in the form of an insoluble aggregate with no enzymatic activity. Which of the following procedures might help ...

biology

An individual with the genetic condition cystic fibrosis has CFTR protein with the amino acid histidine (at position 482), where the normal CFTR protein has arginine. (No other changes are observed in the protein.) This is the result of a _________ mutation. Select one: a. ...

Biology

In the small intestine, the digestion of food molecules is completed and absorption occurs. Structures from the circulatory system are associated with the small intestine. Explain how these structures assist the small intestine in its function.

Biology 110

Displacement of O2 from its respiratory pigment: A. occur more rapidly in cold temp. B. occur more slowly when Ph alkaline. C. occur more slowly when O2 tissue level low. D. none of these.

Biology/History

Where did the Spanish Flu start? Not geologically, but who or what did it start from? Since we called it an infulenza pandemic did it start from a bird? And once this flu was transmitted to a human how could another human catch the flu?

Biology

From the problem above, which fish would be most likely to die when dropped into hot water at 30 degrees Celsius, a fish acclimatized to 4 degrees C or a fish acclimatized to 16 degrees C?

College General Biology

A man who is a non-tongue roller (t) marries a woman tongue roller (T) whose father was a non-tongue roller (t) - what would the expected genotype and phenotype percentage for their offspring?

Biology

Assume you had a round seed garden pea plant and you wanted to find out whether the round seed plant was homozygous or heterozygous. What would you do? (Round is dominant to wrinkled seed)

Science

I have a science project du and im trying to look for a problem on why the sky is blue. I know that why the sky is blue is a question but i cant find the actuall "problem" The sky is blue because of Rayleigh scattering. I know of no problem with that fact.

Science Fair Project

I need help thinking of a topic for an highschool science fair project the actual topic not a link please i really need help thinking of one Testing the water in your school for lead. DOES SODA LOSE IT;S CARBONATION FASTER AT LOW OR HIGH TEMPERATURE

English

Where did he get the idea for his project? 1. He got the idea from a science magazine. 2. He got the idea in a science magazine. (Which preposition should we use?)

Biology

A team of researchers do not use a full gene, but use a shortened version .. (which is coded for all necessary amino acids) Can anyone describe how the shortened version of a gene may be obtained ?? or provide a source to help please Thank you .... Totally stuck !

Biology

c. The cytoskeleton of eukaryotes serves many functions. One of these functions is served in eukaryotes by a different major structure. Which structural feature is it? How do these different structures serve the same function in the two cell types? Is it the cell wall? Thanks -MC

biology

i am researching an article and am having trouble understanding the title. can someone please explain to me in simple terms: Deficiency of a Beta-arrestin-2 signal complex contributes to insulin resistance. so what is a beta arrestin 2 signal complex?

Biology

1. Sponges a. are nonsymmetrical and have oscula b. lack organization into tissues and organs but have specialized cells c. possess cells that are capable of recognizing other sponge cells and have a simple digestive system d. both a and b I'm so confused on this question, ...

Biology

What structures of the embryonic and adult anatomy of manatees and elephants establish the evolutionary relationship between these two animals? manatees evolved from elephants..or elephants evolved from manatees

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

What is the effect of enzyme concentration on enzyme activity? Explain how enzyme activity changes as enzyme concentration decreases, and discuss why this occurs (on a molecular level).

math

On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the student got 35 questions correct. What was the percent of increase?

biology

the index of refraction of h2o is 1.33. find the angle of refraction of a beam of light in air hitting the h2o surface at an angle of 60 degrees n(air)=1.00

Biology

The function of a protein is determined by its ? Answer: shape The shape of a protein is determined by the ? of its ? ? First answer : ? Second two answers : primary structure

biology/evolution

many of the orchids alive today have nectar that doesn't have any sugar in it. Why are there presently-living orchids whose nectar lacks sugar?

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

Initially, how do skeletal muscles (the type of muscle attached to bones) make ATP? write the reaction for this procss (Crp +ADP => Cr + ATP) as a 'coupled' reaction, identifying the exergonic and endergonic reactions. what would this type of ATP production be called?

Biology!!!!!!!!!!!!!!!!

In preparing some blood for observation with a microscope, a student puts a drop of blood into a test tube containing 2 cm3 of water. After mixing, he examines a drop of the mixture. Explain why he cannot see any blood cells under the microscope.

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 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 )

Science Energy

My assignment was to give drawn examples of the 7 forms of energy. I am having trouble with Chemical and Nuclear. My science teacher used a plant as an example for chemical energy but I don't know what she meant. Also I can't think of an example for nuclear. Would a nuclear ...

English

1. We learned math and science. 2. We learnt math and science. (Which past do we use? Are both okay? Which one is commonly used?) 3. I went there every other week. 4. I went there every second week. 5. I went there every two weeks. (Are the three sentences the same?)

Biology

How does an onion stores its carbohydrates? Why? What part of a plant is a potato? What part of a plant is an onion?

Biology

The function of diastase and how it is affected by temperature. I got the function.. but i don't know how temperature affects diastase

Biology (Please, Help Me!)

Please, help me! Differentiate a logistic growth pattern from an exponential growth pattern.

Biology

What is a characteristic that not all craniates have? Do all the Craniates have a vertebral column?

help with my science test 7th grade connection

11. Several studies link cigarette smoke to health problems have resulted in the banning of smoking in many public places.this is an example of A.ways scientific theories become scientific laws. B.ways a scientists communicate results C.ways science influences society. D.ways ...

Biology

In 1999, Beverly Strassman published a study of menstrual cycling among the Dogon women in Mali. What did she find? Using her study results, what methods can you suggest reducing breast cancer in North American women who will have no children or very few children?

Biology

How does a theory provide a framework for the way scientific investigations are conducted? Identify a theory that served for a time and was then supplanted. Compile what you know about the theory, and the effect of the wrong theory on the way people thought. I really just need...

BIOLOGY

Human tissue cells seem to fit together like pieces of a jigsaw puzzle. How is this arrangement of cells helpful to an organism? The presence of membranes around organelles indicates increasing complexity. Why do you think the presence of such membranes gives the cell an ...

biology

what animals and plants are unique in the Belize's barrier reef system? would it be; blue green algae, mangroves and large seagrass meadows.marine turtles, manatees and marine crocodiles? I also need to find the animals and plants that are diversity in this area. please help.

Biology

Plz help me find these words for puzzle. the questions are related to bacteria. 1. Ability of pathogen to kill (8 letters) 2. Ability of an organism to cause disease (8 letters) 3. One of the conditions for bacterial growth (8 letters) 4. Cells with no double membraned ...

biology (multiple choice!)

The death by bubonic plague of about 1/3 of Europe's population during the fourteenth century is a good example of: A. Abiotic factors limiting population size B. A density dependent effect C. A time lag D. A density-independent effect E. Carrying capacity

Principles of Biology 1

A team of students hypothesizes that the amount of alcohol produced in fermentation depends on the amount of sugar supplied to yeast. They want to use 5, 10, 15, 20, 25 and 30% sugar solutions. They propose to run each experiment at 40 degrees celcius with 5 mL of yeast. What ...

biology

Explain how you might determine the role of an essential developmental gene using the following as a guide: *use of model organism? Why? *Use of conditional knockouts/knockouts/hypomorphic allele/null allele/ RNAi? Why? *locate its products, mRNA and protein *effects if ...

Math

Jance spend from 7pm to 9pm doing her homework. She spend 3 times as mach time on her english project as she did on math. the science homework took twice as long as her math homework. How meny minutes did she spend on her science homework?

Science repost for iiii

science - iiii, Monday, October 29, 2007 at 8:08pm What test would you need to perform to prove that it is the combination of glucose and the Glucose Indicator Solution that changes color when heated and not just the glucose or the Glucose Indicator Solution alone? Support ...

science fair

in my science fair report school layout they want us to write a paragraph on testing my hypothesis and before that they asked us to write procedure. i wrote the procedure now do i rewrite it for testing my hypothesis?

biology

1. What adaptive advantage did seeds provide -------------------------------------- Notes: Embryo is protected in a seed. The seed is modified for dispersal which is good b/c…. Once landed, the seed can remain dormant until… The rains come… The temperature is right… ...

Science

Does anyone know anything about respiration?? Cause I have to do this chart thing and it says: Respiration uses glucose and oxygen to produce carbon dioxide and water and water is used to carry out all _________. I don't know what the blank is I have read my science over and ...

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? The websites given last time did not help, please can someone tell me the answers

biology phenotypes

If the parents are PPLLXppll, then the F1 generation is PpLl. Say that the F1 generation is crossed with PPLL. It would be a cross between PpLl X PPLL. Then what is the F1 generation or in other words what are the different gametes I can use to make a F2 generation punnett ...

Biology

In pine, both the staminate and ovulate cones occur on the same tree, but not on the same branch. The ovulate cones are usually at the top of the trees, so that pollen from their own tree will not fall onto and fertilize the eggs. Why would this be an advantage?

Biology

also located on the X chromosome is a gene that codes for deafness. This gene is recessive. a black female cat that is heterozygous for deafness (Dd) is crossed with a yellow cat that is not deaf What is the Punnet Square . and must use two letters on the x chromosome

Biology

The human retina has an area of about 1000 mm^2. If we have a total of 125 million rods and 6.5 million cones in each eye, show that we have about 131,500 sensory cells per square millimeter in the retina.

Biology

I have answered all the other questions on this sheet but I am stuck on this one: Why is it fair to assume that the proportion of cells in each phase of the cell cycle represents the proportion of time spent by individual cells? This is to do with the cell cycle and mitosis.

Biology

Humans have about 20,000 genes in our genome. Explain how cells differentiate into different kinds of cells even though they have the same set of 20,000 genes in their nuclei, so they are genetically identical.

Biology

What is chromatin and what does it turn into and how does it arrange itself? Chromatin forms chromosomes during cell division and consists of DNA RNA and proteins. It turns into separate structurs called chromosomes. Idk how it arranges itself

Biology

Which of the following is the muscle action that results in exhalation and causes the air pressure inside the lungs to be higher than outside the chest a) Contraction of internal intercostals b) Relaxation of the diaphragm c) Contraction of the diaphragm d) Relaxation of the ...

biology

explain what is the carbon cycle and why its called a cycle *explain four "moves" that occur in this cycle * explain the importance of this cycle to organisms *explain the human impact and effects on this cycle when fossil fuels are burnt

biology

explain what is the carbon cycle and why its called a cycle *explain four "moves" that occur in this cycle * explain the importance of this cycle to organisms *explain the human impact and effects on this cycle when fossil fuels are burnt

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

Biology

Blockage of the common bile duct would be expected to affect lipid digestion. protein digestion. carbohydrate digestion. nucleotide digestion. cellulose digestion. lipid is the only common sense one?

Biology

"Suggest two things a large cell might do to increase its surface area:volume ratio". The obvious method would be to divide into many smaller cells...but what else can the cell do? I also thought that it could just simply grow larger, but the question specifies that the cell ...

biology

Question: What are the distinguishing characteristics of prokaryotes? My Answer: Prokaryotes range in size from 1 to 5 micrometers, making them much smaller than most eukaryoteic cells. Prokaryotes can be divided into two very different groups Eubacteria and Archaebacteria. Am...

biology

Orange juice is often touted by nutritionists as being an excellent antioxidant. Within an essay response, discuss the following concepts: an antioxidant’s function, free radicals and their effect on the human body, sources of vitamin C, optimal delivery system for vitamin C...

Science

[I choose b.] Why are there so many species still unknown to modern science? a.many of these species are found in remote environments. b.smaller species receive less attention than large organisms. c.Cataloging these species is a huge task d.all the above Many have not been ...

Statistics

I already found part A just need help with B! 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...

Biology

Describe four ways that plants protect themselves from environmental conditions using one example from each of the following categories: a. hormone b. tropism c. plants structure d. plant process In your answer be sure to include the specific threat and solution. Please help ...

11th grade:AP Biology

This is concerning Ecology. Question: You turn on a light and observe cockroaches scurrying to dark hiding places. What have you observed? A. taxis B. learned behavior C. migration D. visual communication E. operant conditioning I have already crossed out migration; however, I...

Wild Life Biology

Our environment changes rapidly with loss of animal habitat increasing daily. Why might an animal's insticts cost it it's life in this situation? So far all I can think of is the deer that sense a sourse of food on the oppiste side of a road. Which causes them to cross and get...

AP Biology

Which of the following is probably the main factor responsible for the phenomenon of density-dependent inhibition? a. a local accumulation of growth-inhibiting factors b. a local deficiency of nutrients c. cells' inate "sense" of knowing when the organ of which they are apart ...

biology

1. Owls sleep during the day and are awake at night because of their kind of estivation habituation* circadian rhythm conditioning 2. When a bird sings to signal others of the same species to keep away, it is showing signs of cheerfulness courtship behavior conditioning ...

Biology

Among protostomes, which morphological trait has shown the most variation? A. Type of symmetry (bilateral vs. radial vs. none) B. Type of body cavity (coelom vs. Pseudocoelom vs. acoelom) C. Number of embryonic tissue types (diploblastic vs. triploblastic) D. Cephalization (...

biology

Question 18 If a child was allergic to a substance scratched onto their skin, the area turned red and swollen within about 10 minutes. Which of the following would cause these symptoms? Answer Release of interleukin-10 Recruitment of B cells Release of histamine The presence ...

need ideas on science fair project!!

im doing a science fair project on teeth.... and i need ideas. i hve already tried what kind of soda affects the tooth most, and i need more ideas! plz help!!

biology

Can someone please describe what a double helix looks like? I think it looks like fusilli pasta. Is this correct? I'm having a lot of trouble understanding what DNA looks like. Please help, thank you. I am visually impaired by the way.

biology

if a solution has a pH of 4 mix to a solution that has a pH of 9 what will be the pH of the mixed solution? will it be acidic or base? please show me how to calculate it.please i need the answer before tomorrow morning. thank you so much. I had been to other sites but i didn't...

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 4.0 Grade = B Communications...

Biology

Systolic blood pressure is the pressure in veins. pressure in major arteries caused by the contraction of the left ventricle. pressure in major arteries when the heart is relaxing. difference in pressure that causes the pulse. hard im thinking its B

Biology

If it happens that a neurotransmitter binds to a receptor site and produces a negative voltage, the probablity: A) that the neurons are densely connected increases B) of an excitatory response increase C)That the receiving neuron will fire decrease D)that the transmitting ...

Biology

Which of the following bond types is Testosterone capable of forming with a suitable partner molecule? Indicate your answer by checking "Yes" or "No" as appropriate. Hydrogen Bond Ionic Bond van der Waals forces As a whole, is the Testosterone molecule: - Hydrophobic - ...

Biology

A farmer wants to propagate a good variety of a crop in a way which maintained all its desirable traits. Which of the following methods should be used? A. Self Pollination B. Vegetative propagation C. Growing seeds produced from this variety D. Cross-pollinating this crop with...

biology help

Does photosynthesis require energy? What type of energy reaction would photosynthesis be? Is photosynthesis an example of a coupled reaction?

Biology

To a curly haired mother and straight haired father 8 children are born. The ratio of curly and straight haired will be 1) 6:2 2) 4:4 3) 2:6 4) 3:5

Biology

If a curly haired father and straight haired mother 8 children are born .the ratio of curly and straight haired will be ......

Binomial Distribution

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

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 ...

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