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Homework Help: Science: Biology

Recent Homework Questions About Biology

Biology
Explain how cell membranes and their components participate in intercellular signaling. Give a specific example of cell membrane involvement in one particular type of cellular signaling.

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
The single defining characteristic of the mammals is the presence of? mammary glands. a placenta. hair. warm blood. a skul

Biology
1.,you drink salty beverages (clams to) and eat pretzels all day. At the end of the day your weight is way up. Why? I think it has something to do with the fact that our cells shrink in size ? I have no clue? 2. Athletes drink Gatorade . Why? Given the description, tell the ...

Biology
1.,you drink salty beverages (clams to) and eat pretzels all day. At the end of the day your weight is way up. Why? I think it has something to do with the fact that our cells shrink in size ? I have no clue? 2. Athletes drink Gatorade . Why? Given the description, tell the ...

Biology
What can happen to our virtual finch population if the weather changes between wet and dry conditions too rapidly? A- The mutation rate may fall to zero. B- The distribution of beak sizes may cease to be bimodal. C - The finch population may go extinct. D - Beak size may cease...

Biology
Why is coelom considered to be an evolutionary advantage

Biology
A person in Flint Michigan, has severe DNA damage due to heavy metal comtaminated water and the person is still alive. The doctors are now seeing tumors develop. Give two reasons, related to tumor suppression, DNA replication or some other topic covered to date in this class ...

Science/Biology
the vessels that contain the largest volume in the vascular system are? I think Arteries

biology
I got a biology project that's about the excretory system & I have to write the word excretory & draw pictures inside of the word that compares it to real life. What pictures can something be compared that involves with the system?

biology
given the inefficiency of two of the pathway shown in figure 9-4 what advantage could there be to using these pathway to produce energy?

Science/biology
A 62 year old man experiences sudden onset of difficulty breathing, followed by double vision, and later by abnormal kidney and liver function tests. Of the following conditions, which is most likely the cause of his problems? A. Vasculitis​​ B. Raynaud's ...

biology
hi. I would like to know in reference to wind and insects moving pollen to different species of flowers at the same time, why doesn't pollen in one species fertilize egg of a second species thus forming hybrids?

biology
the amount of energy needed to start two reactants to form a product is?

SCIENCE
jamal's neighbor tells him that there are more bacterial cells than human cells in his body. which of these is the best reason that jamal should question his neighbors statement? a. jamal is older than his neighbor b. jamal does not like his neighbor very much. c. his neighbor...

Science Help
jamal's neighbor tells him that there are more bacterial cells than human cells in his body. which of these is the best reason that jamal should question his neighbors statement? a. jamal is older than his neighbor b. jamal does not like his neighbor very much. c. his neighbor...

BIOLOGY - HELP URGENT!!!!
How do the following terms relate to one another with respect to a single genetic locus? - Wild Type Allele(s) - Mutant Allele(s) - Gene Product(s) - Population - Genotype - Phenotype - Dominant Allele - Recessive Allele - Individual - Number of different alleles

Very quick question biology
I'm working on a biology project where I must make a molecule of glucose. I have finished my molecule but I want something in the middle of it which is the "centrepiece ". Can anyone give me any ideas of some things glucose is found in (food) in which I could easily find the ...

Science
1. How does nanotechnology how 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 materials atomic structure, it's physical properties can also be changed. C. By changing...

biology
A positive control group contains the dependent variable under study. true or false i guess it's true

Biology please assist
1. Where is pH found? 2.what is the function of pH? 3.what principle guides the phenomenon of pH? 4.what is acid rain ?how is it related to pH values?

Biology
Draw map of nigeria and indicate the local biomes in the different state

biology
In which part of the body are the crypts of Lieberkuhn?

Biology - Please check?
How does artificial selection differ from natural selection? (Free response) Here is what I wrote: While both of these selections have to do with breeding, artificial selection (same as selective breeding) is where either plants or animals are intentionally bred for scientific...

Biology
1.) Prophage occurs when a.) It bonds with carbohydrates to create a virus b.) Bacteriophage DNA embeds itself in host DNA c.) It detaches from carbohydrates to create a virus. d.) Bacteriophage DNA detatches itself from host DNA. D.

science/biology (cladogram)
How would a scientist use DNA or protein sequences from three different organisms to construct a cladogram? don't understand this how do I write this???? help!!!!

Biology
MEIOSIS 1)name the process unique to meiosis that occurs during bivalent formation that may increase genetic diversity? 2)how are sister chromatic made and what is the structure that holds them together? 3)what do we call package of genetic information (DNA), encoding a ...

Biology
How do mutations that alter the nucleotide sequence of a promoter influence the original function of that promoter and thus the entire cell? (Try to name all the biological consequences of possible mutations in the promoter.)

Biology help!!
what compounds (fats, starch, protein and simple sugar) do the following foods have? Oatmeal Margarine Salmon Whole milk Chocolate chip cookies Peach

Study Guide
Does anyone know where I could find an online or PDF version of the Holt Biology 2004 study guide?

Biology
what compounds (fats, starch, protein and simple sugar) do the following foods have? Oatmeal Margarine Salmon Whole milk Chocolate chip cookies Peach

Biology
what compounds (fats, starch, protein and simple sugar) do the following foods have? Oatmeal Margarine Salmon Whole milk Chocolate chip cookies Peach

Biology
In what way are bacteria and fungi similar? Ecological function Cell wall components Design of the nucleus Ribosome structure help

Biology
bond that holds atoms together in a molecule are... A.radiation energy B. kinetic energy C. thermal energy D. potential energy

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
Pepsin is... A. enzyme B. lipid C. carbohydrate D. nucleic acid I think A!

Biology
key factor driving cellular differentiation in the body? A. rate of transcription B. cell nutrience C. expression of genetic coding D. chemical gradients in a cell environment I think A

Biology
DNA can copy itself easier than RNA because? A. its a double helix B. polymer of nucleotide C. its confined to nucleus D.its supported by histone proteins I have no idea

Enriched science
What is the goal of synthetic biology? A. The goal of synthetic biology is to mimic living cells B. The goal of Synthetic biology is to generate new tissues to replace damage tissues C. The goal of synthetic biology is to engineer living cells to perform specific functions D. ...

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

Science
I'm really bad at Biology and Science in general. Chemistry and Physics will be difficult for me because I'm not good at the Science branch even though I study and work hard for Science/Biology. What can I do to improve?

Directions help (Biology)
I have to do a research paper for my biology class, and I'm having a hard time understanding what to exactly write about. The directions are written way different then how my teacher has ever addressed anything, I emailed her for clarification but it doesn't seem like she will...

biology
What kind of molecule forms the sodium-potassium pump? Genuinely in need of the answer to the question.

biology
How is molecular weight related to the size of a molecule? Genuinely in need of the answer to the following question. Thank you.

Biology (Animal)
How is molecular weight related to the size of a molecule?

Math,english,further math,government,CRS,lit in english,yoruba,civic,agric,biology
The fourth and sixth term of an arithmetic progession are -4 and -10 respectively. Find A.the common difference B.the first term C.sum of the first twelve terms

Biology
How are the following terms related to the process of transcription and one another? Eukaryotes, Prokaryotes, membrane-bound nucleus, introns, exons, precursor RNA (pre-mRNA), mature RNA, heterochromatin, euchromatin, and structural gene.

Biology ASAP
What is the scientific name ( genus and species level) of star fish, jelly fish, silk spider, mouse, and earth worm

biology
Picture true of false The atom shown in the diagram has 4 energy levels or shells. 2. The atom shown in the diagram above has a total of 5 electron orbitals. 3. Each energy level consists of 2 or more orbitals. 4. The second energy level consists of 4 electron orbitals. 5. ...

biology
The atom shown in the diagram has 4 energy levels or shells. true or false

Biology
How can I describe the following things about water in sketches or drawings? please give me ideas 1.High heat capacity 2.High heat of vaporization 3.Water is a solvent 4.Water molecules are cohesive and adhesive 5. Frozen water is less dense than liquid water 6. Water has a ...

Biology
Which is an example of a population? all the squirrels in North America and Europe all the species of organisms in one state all the rose bushes around the world all the sugar maple trees in a state park

Biology /science
How can I describe the following things about water in sketches or drawings? please give me ideas 1.High heat capacity 2.High heat of vaporization 3.Water is a solvent 4.Water molecules are cohesive and adhesive 5. Frozen water is less dense than liquid water 6. Water has a ...

Biology
How can I describe the following things about water in sketches or drawings? please give me ideas 1.High heat capacity 2.High heat of vaporization 3.Water is a solvent 4.Water molecules are cohesive and adhesive 5. Frozen water is less dense than liquid water 6. Water has a ...

Earth Science
What are the two most common minerals located in Earth's crust? (A. Feldspar and quartz) B. Iron and copper C. Diamonds and gold D. Salt and saline Climatology is a subspecialty of A. environmental science. B. oceanography. (C. meteorology.) D. marine biology.

Biology
Two techniques which can help in early detection of bacteria or virus infection much before the symptoms appear in the body?

Biology
Name an organ which is formed of tissues of two different individuals.

Biology
Name of the vaccine which is obtained from transgenic yeast . Searched it but cant find it... Plx help !

Biology
Use your understanding of natural selection to describe how the following trait might have evolved: Plants have pores on the surfaces of their leaves that allow carbon dioxide into the leaf (for photosynthesis), but also allow water to escape. Land plants have guard cells ...

Biology
Mammals and birds have evolved from reptiles. In what way does a comparative study of their embryology establish the validity of the statement ? P.S I don't have the"Modern Biology" Book ... so plz help me with the note!

Biology
In the question section of my chapter "Strategies for Enhancement of Food Production" i got d question "What is Quarantine? Give one example of it." I found the what is the quarantine part but didn't get examples... Not even in my book. Plz help !

Biology
Mammals and birds have evolved from reptiles. In what way does a comparative study of their embryology establish the validity of the statement ?

biology
If we put few ml.of hydrochloric acid on a piece of the skeleton of a shell

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 need HELP FAST

Ap Biology
Unprotected skin cells mutate at a rate of 20% when exposed to 10 rads of UV radiation. A group of scientists tested whether Sun Screen X will decrease the mutation rate. 1100 cells were tested, exposed and counted. Only 200 cells had mutated, 900 cells remained unchanged. ...

Social Studies
In what way is geography an integrative science? a. Geography is an integrative science because it examines Earth in both physical and human terms.*** b. Geography is an integrative science because it borrows from physical sciences such as chemistry, biology, meterology, and ...

Biology
Which parts of Lamarck's theory of evolution are no longer supported today? Choose two of the following. - Organisms change over time - Traits acquired during an organism's lifetime can be passed down to its offspring - War, famine, and disease help keep population growth ...

Biology
1.) Do you think evolution is still taking place in the Galapagos finches? Why or why not? According to what I’ve learned yes evolution is still taking place in the Galapagos finches. Isolation and gene mutations cause species to evolve into different things. This could be a...

Biology
Wine is made by mixing yeast with grapes and allowing the yeast cells to undergo fermentation. Sparkling wine is a type of wine that contains high levels of dissolved carbon dioxide. What is the source of the carbon atoms in the carbon dioxide found in sparkling wine? ethanol ...

Biology
What would most likely happen to cells placed in fresh water? a- water would flow out because they are hypotonic to the external environment b- water would flow into them because they are hypotonic to the external environment c- water would flow out of them because they are ...

biology
1.Why do Bacteria and yeast synthesize fatty acids with more cis-double bonds when surrounding temperature drops? 2.Despite fluidity of bilayer, why do liposomes not fuse spontaneously with one another?

English
Which of the following sentences best reflects chronological order? a. George Washington Carver became known for his research on plant biology. b. He attended Simpson College from 1890, and enrolled in Iowa State Agricultural College the following year.*** c. Carver discovered...

Biology
What is an ecological footprint and why does Nothern Americans have such large ecological footprints?

Biology
What causes acid precipitation, and what are the negative effects of acid precipitation?

Biology
What's an ecological niche?

Biology
Define and give examples of predation, competition, and symbiosis.

Biology
What is the difference between endangered and extirpated?

Biology
What is the difference between tolerance range and optimum range in Biology?

Biology
What is an invasive specie, and what are some negative effects of an invasive species?

Biology
What is pesticide resistance? Why is it that biological control is a good solution to the problem of pesticide resistance?

Biology
What's the difference between Bio accumulation and Bio amplification?

Biology
How does Nutrients get affected from surface runoff in Biology? If in detail, you could explain what exactly is Surface Runoff, and what causes it, that'd be of great help !

Re:BIOLOGY
Whats the relation between Photosynthesis and Cellular Respiration? Is it, because they have complimentary proccesses?

biology
which occurs during the krebs cycle? 1) breaking down pyruviate 2) capturing light energy 3) creating glucose molecules 4) producing ethyl alcohol ?

Biology
How do natural ecosystems have more biodiversity?

Biology
What cellular mechanisms causes short term changes in gene expression

Biology
For your cell explain how gene expression related to the cell's ability to perform its function in the body

Biology
Explain why some proteins are made by nearly all cells and give two examples I put they are needed for basic cell life but I don't know what two examples to put

Biology
How did you model crossing over using your chromosomes?

Biology
I just want to know how to improve on Biology. I know most people will say to study but even when I study for this class, I still can't do as well as I want to. Any tips?

Mathematics,Science(physics,chemistry and biology)
Two similarly charged identical ping pong balls are suspended from the common support with the help of two threads.Calculate angle between the two threads and also calculate the tension in two strings.

Biology
Describe how you would prepare 100ml of a solution that is 22% acetic acid by volume?

math
In a class of 50 student 28,22,20 of them offer physics,chemistry and biology respectively also,4 of them offer physics and chemistry but not biology,3 offer physic and biology but not chemistry,6 offer biology and chemistry but not physics if 13 of them offer physics only how...

Math
Out of 300 student in final year in senior secondary school, 200 are offering biology and the150 offering chemistry how many are offering neither biology nor chemistry

Sta 112
This is my question every one . Please help me have it already I had 6 as my answer. In a class of 50 student 28,22,20 of them offer physics,chemistry and biology respectively also 4 of them offer physics and chemistry but not biology,3 offer physics and biology but not ...

World History check my answers
Please check my answers. I put a star* by the one i chose. 1. What innovation is Henry Ford credited with pioneering? a. Combustion engines b. Assembly line* c. Increasing workers’ pay 2. Identify one of the troubles the Coolidge administration faced with dealing with social...

Biology
If a cell has 8 duplicated (double stranded) chromosomes during metaphase of mitosis, how many chromosomes would the cell have at the end of anaphase?

Pure Maths, Biology , Business ,CAT
What can I study in university with these subjects?

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
Where the CD8 receptor is located: On Ts cells or Tc cells or both of them.

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Homework Help: Science

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