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April 19, 2014

Homework Help: Science: Biology

Recent Homework Questions About Biology

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BIOLOGY
Only you can answer this.
Wednesday, December 4, 2013 at 1:26pm

BIOLOGY
Describe a series of small habitats that exist within 10 or 20 kilometers of your house and which might be subject to MacArthur and Wilson’s theory of island biogeography
Wednesday, December 4, 2013 at 1:15pm

Biology
If you were given a plant with red tomatoes, how could you figure out what its genotype is? Explain
Wednesday, December 4, 2013 at 12:20am

biology
Which provides more energy for the cell to perform its functions, cellular respiration or fermentation? Explain.
Tuesday, December 3, 2013 at 4:48pm

Geography nd physical
Pathologists have very strong biology, chemistry, and physics backgrounds.
Tuesday, December 3, 2013 at 10:41am

biology
it looks to me as if CATG was replaced by GTAC. Reversed? Surely not.
Tuesday, December 3, 2013 at 10:33am

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?
Tuesday, December 3, 2013 at 10:26am

biology
The girls all receive normal X chromosome from dad, meaning they cannot be more than carriers. If males get recessive gene, they will have hemophilia since there is no dominant gene on the Y chromosome to supress the hemophilia gene. How do you get six variations? XCXC, XcY ...
Monday, December 2, 2013 at 11:43am

biology
Since Jiskha doesn't have a biology expert at this time, please try posting your question at this site. http://www.biology-online.org/biology-fo​rum_search_20140419/
Monday, December 2, 2013 at 8:12am

biology
In a cross with a mother who carries the allele for hemophilia and a father who has normal blood clotting what would be the expected phenotypes of the offspring? A. all females normal, all males normal B. all females normal, all males with hemophilia C. all females carriers of...
Monday, December 2, 2013 at 12:23am

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?
Sunday, December 1, 2013 at 11:13pm

biology
Its A, Mario is wrong
Sunday, December 1, 2013 at 4:52pm

biology
https://www.google.com/search?client=saf​ari&rls=en&q=DNA+RNA+polymerases+similar​ities&ie=UTF-8&oe=UTF-8
Saturday, November 30, 2013 at 4:30pm

biology
Since this is not my area of expertise, I searched Google under the key words " bacterial vs. mammalian transcription" to get these possible sources: https://www.google.com/search?client=saf​ari&rls=en&q=bacterial+vs.+mammalian+tra​nscription&ie=UTF-8&oe=...
Saturday, November 30, 2013 at 4:28pm

biology
in what aspects are DNA and RNA polymerases similar?
Friday, November 29, 2013 at 12:13am

biology
Differences between bacterial and mammalian transcription?
Thursday, November 28, 2013 at 11:53pm

biology
no wait it's A
Thursday, November 28, 2013 at 5:42pm

biology
is this B?
Thursday, November 28, 2013 at 5:41pm

biology
In a cross of heterozygous RW four o'clock plants (RW x RW) what proportion of the seeds will grow to produce pink flowers? A. 0 B. 0.25 C. 0.5 D. 0.75
Thursday, November 28, 2013 at 5:41pm

biology
if i have a mutation in the 'I' region of the ara operon that can't bind to the araC protein. how is the mutation effecting the function of the operon?
Thursday, November 28, 2013 at 2:10am

Biology
Ribbit
Wednesday, November 27, 2013 at 2:28pm

biology
1234
Tuesday, November 26, 2013 at 4:07pm

Biology
It's possible, but what type of genes are going to be inserted? Who will determine who will get what genes? As with medicine, will there be unintended side effects? That should give you a start.
Tuesday, November 26, 2013 at 1:25pm

Biology
What do you think, is it likely that we will insert genes for new and better properties in humans? Is it desirable? What dangers can you see with such a development?
Tuesday, November 26, 2013 at 11:08am

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. ...
Monday, November 25, 2013 at 3:18am

biology
Which of the following is NOT true of transcription / translation processes in both bacteria and eukaryotes? Select one: a. RNA polymerase reads the template DNA strand to produce the complementary mRNA transcript. b. Translation of a polypeptide can occur before transcription...
Monday, November 25, 2013 at 3:17am

biology
Gene expression regulation by methylation of the cytosines in a promoter would be considered : Select one: a. Transcriptional regulation. b. Posttranscriptional regulation. c. Posttranslational regulation. d. Translational regulation.
Monday, November 25, 2013 at 3:17am

biology
At the end of the electron transport chain when electrons & H+ & O2 combine. Oxygen is the final electron acceptor.
Sunday, November 24, 2013 at 11:08pm

biology
D acetyl coa or coenzyme A
Sunday, November 24, 2013 at 11:07pm

Science-I don't know
Try this forum_search_20140419. http://www.biology-online.org/biology-fo​rum_search_20140419/
Sunday, November 24, 2013 at 10:21pm

biology
Before entering the Krebs cycle, an intermediate molecule bonds to a 2-carbon molecule. This intermediate complex enters the Krebs cycle and combines with a 4-carbon molecule to form citric acid. The name of this molecule is ____________________. A. citrase B. FADH C. ATP ...
Sunday, November 24, 2013 at 9:49pm

biology
Oxygen becomes part of cellular respiration _________________. A. at the end of glycolysis B. at the end of the electron transport chain C. at the end of fermentation D. at the end of the Krebs cycle
Sunday, November 24, 2013 at 9:48pm

biology
Which photosystem-1 or 2-most likely evolved first?
Thursday, November 21, 2013 at 11:19pm

Biology
-6.86 bars
Wednesday, November 20, 2013 at 10:35pm

biology
D) vaccinate 50 of the 100 rats and then expose only 50 vaccinated rats to the disease.
Wednesday, November 20, 2013 at 9:46pm

biology need help
1 – 2 sentences why each of the following unique properties of water is important to living things Water is the universal solvent: Water is less dense as a solid than as a liquid Water molecules are attracted to one another (cohesion) Water molecules are attracted to ...
Wednesday, November 20, 2013 at 8:59pm

biology
Pretend you are taking a tour of a factory that creates macromolecules  Describe your journey through the 4 rooms in the factory – the Carbohydrate Room, the Lipid Room, the Protein Room, and the Enzyme Room. In each room, include the following: 1. What type of ...
Wednesday, November 20, 2013 at 7:33pm

biology
1 – 2 sentences why each of the following unique properties of water is important to living things Water is the universal solvent: Water is less dense as a solid than as a liquid Water molecules are attracted to one another (cohesion) Water molecules are attracted to ...
Wednesday, November 20, 2013 at 7:27pm

biology
"Because of its polarity, water molecules are attracted and stick to one another" adhesion
Wednesday, November 20, 2013 at 7:25pm

biology
"Because of its polarity, water molecules are attracted and stick to other molecules, making water really good at dissolving a wide variety of substances" universal solvent?
Wednesday, November 20, 2013 at 7:24pm

biology
"Because of its polarity, water molecules are attracted and stick to one another" thats cohesion
Wednesday, November 20, 2013 at 7:22pm

biology
no its surface tension
Wednesday, November 20, 2013 at 7:21pm

biology
"Because water molecules stick together.." is it cohesion?
Wednesday, November 20, 2013 at 7:20pm

biology
POLARITY COHESION SURFACE TENSION CAPILLARY ACTION UNIVERSAL SOLVENT ADHESION match definitions Because water molecules stick together, they form a thin film on the surface of pools of water, on which some organisms can walk Water molecules are able to move against the force ...
Wednesday, November 20, 2013 at 7:20pm

biology
Explain why water molecules are described as “sticky” is it because hydrogen bond that bonds together.
Wednesday, November 20, 2013 at 7:07pm

biology
Explain why water molecules are described as “sticky” is it because hydrogen bond that bonds together.
Wednesday, November 20, 2013 at 7:01pm

biology
Describe the structure of water in words:
Wednesday, November 20, 2013 at 6:50pm

biology
Draw a picture of the structure of a water molecule that includes all of the following: hydrogen, oxygen, partial positive charge(s), partial negative charge(s)
Wednesday, November 20, 2013 at 6:45pm

biology
3:1
Wednesday, November 20, 2013 at 6:33pm

biology
Since this is not my area of expertise, I searched Google under the key words "atom structure picture" to get these possible sources: https://www.google.com/search?client=saf​ari&rls=en&q=atom+structure+picture&ie=U​TF-8&oe=UTF-8 In the future, you can ...
Wednesday, November 20, 2013 at 6:14pm

biology
Draw a picture of the structure of an atom that includes all the following: protons, neutrons, electrons, nucleus, orbitals
Wednesday, November 20, 2013 at 6:10pm

HELP Biology
This might be stimulus-response learning.
Wednesday, November 20, 2013 at 5:08pm

HELP Biology
To find out which key will open a lock, you try several until one works. This kind of learning is called ________________________. I have no clue
Wednesday, November 20, 2013 at 12:03pm

Biology
The half-life of carbon-14 is 5,700 years. If a sample originally had 26 g of carbon-14, how much would it contain after 22,800 years?
Tuesday, November 19, 2013 at 6:15pm

Biology
Proximal prophylaxis
Tuesday, November 19, 2013 at 5:13pm

biology - cells
http://en.wikipedia.org/wiki/Cell_theory​
Tuesday, November 19, 2013 at 7:57am

Biology
Since Jiskha doesn't have a biology expert at this time, please try posting your question at this site. http://www.biology-online.org/biology-fo​rum_search_20140419/
Tuesday, November 19, 2013 at 7:50am

biology - cells
Which scientist proposed that cells come from other cells? A. Hooke B. van Leeuwenhoek C. Schwann D. Virchow
Monday, November 18, 2013 at 10:50pm

biology
is the answer to this D?
Monday, November 18, 2013 at 9:53pm

biology
Which of the following is not produced in the light-dependent reactions of photosynthesis? A. NADPH B. sugars C. ATP D. oxygen
Monday, November 18, 2013 at 9:51pm

BIOLOGY
3rd one
Monday, November 18, 2013 at 1:30pm

biology
What segregations comprise the cloaca, and what are their functions? How does this cloacal region differ from that of most mammals?
Monday, November 18, 2013 at 11:13am

biology
Make a single base pair substitution mutation in the gene below that results in a protein that is shorter than the protein produce by the original gene. When you are satisfied with your change and its effect, click the "Final Check" button. Note that a "single ...
Monday, November 18, 2013 at 10:19am

biology
Mutant C: Suppose an A/T base pair was inserted in between the two G/C base pairs at positions 18 and 19, marked by the letters above and below the strands. What would the amino acid sequence of the resulting protein be? Be sure to enter the sequence N- to -C from left to ...
Monday, November 18, 2013 at 10:04am

biology
Mutant C: Suppose an A/T base pair was inserted in between the two G/C base pairs at positions 18 and 19, marked by the letters above and below the strands. What would the amino acid sequence of the resulting protein be? Be sure to enter the sequence N- to -C from left to ...
Monday, November 18, 2013 at 10:02am

BIOLOGY
You plan to generate many copies of this gene by PCR. You will then insert the PCR product into the plasmid. d) Which two primers from the list below will allow you to use PCR to amplify this gene? Check the two that apply. 5'-GTGCA-3' 5'-CACGT-3' 5'-TATGG-...
Sunday, November 17, 2013 at 10:15pm

BIOLOGY
b) Make a single base pair substitution mutation in the gene below that results in a protein that is shorter than the protein produce by the original gene. When you are satisfied with your change and its effect, click the "Final Check" button. Note that a "...
Sunday, November 17, 2013 at 10:11pm

Biology: Endotoxin
Does endotoxin refer to the LPS or to lipid A?
Sunday, November 17, 2013 at 9:20pm

biology mit
b) Make a single base pair substitution mutation in the gene below that results in a protein that is shorter than the protein produce by the original gene. When you are satisfied with your change and its effect, click the "Final Check" button. Note that a "...
Sunday, November 17, 2013 at 1:53pm

biology
Which photosystem-1 or 2-most likely evolved first?
Saturday, November 16, 2013 at 9:28pm

biology
I have no idea what you are asking.
Saturday, November 16, 2013 at 6:26pm

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.
Saturday, November 16, 2013 at 6:06pm

biology
ou sequence many of the recombinant plasmids generated. You find three mutant versions of the inserted gene. (This is likely due to errors introduced during the PCR amplification.) The sequences of the gene found in the three mutants are given below. Consider each of the ...
Friday, November 15, 2013 at 10:12am

A/P Biology
The Echinopsis mamillosa is a flowering cactus native to Bolivia. A high-rise building is built near a particular Echinopsis, filtering the amount of direct sunlight it receives. Which of the following processes is negatively affected first by the reduction in sunlight? ...
Thursday, November 14, 2013 at 10:38pm

Science! Biology 1
Question: Which of following best describes the free-energy requirements of an organism? Answer Choices: During times of hibernation large amounts of free energy are required. Free-energy demand is consistent for all heterotrophs. The organism requires free energy in all ...
Thursday, November 14, 2013 at 10:36pm

biology
Given three restriction enzymes, cuts and base pairs on the plasmid map. How do you apply this information to a autoradiogram of sequencing gel? Also, include the band locations.
Thursday, November 14, 2013 at 12:02pm

biology
can you give examples of analogous structures????? please i have tried about 4 differet websites and no one has helped
Thursday, November 14, 2013 at 11:03am

biology
okk thank you
Tuesday, November 12, 2013 at 6:43pm

I do not know!
If I'd known the answer, I would have helped you. If no one has answered, it's because no one who knows biology has been on Jiskha to see your question.
Tuesday, November 12, 2013 at 6:39pm

Biology ! Please help!
Why do chromosomes form and what kind of proteins do they combine with?
Tuesday, November 12, 2013 at 5:49pm

biology
polar molecule are soluble in water. how does this activity demonstrate polarity of molecule that contain the -OH group. our activity was to do an experiment mixing 2 diff liquids together to see if they dissolve and tell if its polar or nonpolar. 1. water and oil= polar 2. ...
Tuesday, November 12, 2013 at 5:47pm

Biology
In DNA fingerprinting, the DNA probe that is used is ______to the DNA sequence of the repeats in the sample? im guessing amplify????
Tuesday, November 12, 2013 at 12:45pm

Biology
Please help! i was wondering why a genome size determined in a lab would be smaller than that of the actual. thanks
Tuesday, November 12, 2013 at 7:18am

Biology
How are antibodies used to detect similarities in protein sequences?
Monday, November 11, 2013 at 10:22pm

Biology
why do we use protein sequences when comparing genetic similarities?
Monday, November 11, 2013 at 10:21pm

Biology
Since this is not my area of expertise, I searched Google under the key words "proton pump input output" to get these possible sources: https://www.google.com/search?client=saf​ari&rls=en&q=proton+pump+input+output&ie​=UTF-8&oe=UTF-8 In the future, you ...
Monday, November 11, 2013 at 3:10pm

biology
the old addage on muscles: use it or lose it applies
Sunday, November 10, 2013 at 8:48pm

biology
Is their a relationship between strength and independent mobility? Can a spinal cord injury affect he body permanently?
Sunday, November 10, 2013 at 8:46pm

biology
please help
Sunday, November 10, 2013 at 7:58pm

BIOLOGY
1- ANS=0 2- ANS=0 3- ANS=38 4- ANS=0 5- ANS=0 Trippiest problem ever
Sunday, November 10, 2013 at 1:49am

Biology
What are the inputs and outputs of the proton pump?
Saturday, November 9, 2013 at 10:18pm

BIOLOGY
Consider the following 45 base-pair (bp) DNA sequence: 1 10 20 30 40 | . | . | . | . | . 5’-CGCACCTGTGTTGATCACCTAGCCGATCCACG​GTGGATCCAAGGC-3’ ||||||||||||||||||||||||||||||||||||||||​||||| 3’-GCGTGGACACAACTAGTGGATCGGCTAGGTGC​CACCTAGGTTCCG-5&#...
Friday, November 8, 2013 at 3:27pm

Biology
How would u expect the number of mitochondria in a cell to be related to the amount of active transport it carries out? Please help!
Friday, November 8, 2013 at 11:52am

biology
wild fires avalanches earthquakes tsunamis volcanic eruptions tornadoes hurricanes
Friday, November 8, 2013 at 10:48am

biology
many human-caused losses of biodiversity, such as habitat destruction and of invasive species. are there any natural events that could alter the diversity index?
Friday, November 8, 2013 at 4:04am

Biology!!!
In humans, short fingers and widow's peak are dominant over long fingers and straight hairline. A heterozygote in both regards reproduces with a similar heterozygote in both regards reproduces with a similar heterozygote. What is the chance of any one child having the ...
Thursday, November 7, 2013 at 7:13pm

Biology
What polymers are found commonly in cells? Additionally, what monomers make up those polymers?
Wednesday, November 6, 2013 at 8:27pm

biology
Enzymes in the human body work in a very wide range of conditions. A. True B. False
Wednesday, November 6, 2013 at 8:10pm

biology
Substance X is converted to substance Y in a chemical reaction. What role would a catalyst play in this scenario? A. It would increase the solubility of substance X into the solvent needed to speed up the reaction. B. It would speed up the reaction by becoming part of the ...
Wednesday, November 6, 2013 at 8:09pm

biology
an experiment, a scientist notices that an enzyme’s catalytic rate decreases when the pH of the environment is changed. Which of the following best summarizes the effect of pH on the enzyme? A. pH changes the shape of the enzyme. B. pH takes energy away from the enzyme, ...
Wednesday, November 6, 2013 at 8:08pm

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