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July 2, 2015

Homework Help: Science: Biology

Recent Homework Questions About Biology

biology
Food that is consumed often enters the body in the form of large organic molecules, such as proteins and starches. Prior to entering cells, however, these large molecules must be broken down into smaller molecules. For example, proteins are digested into _______ prior to ...
Wednesday, March 21, 2012 by Monique

biology
Organisms must be able to adapt to a changing external and internal environment. An organism's ability to maintain a stable internal environment is known as homeostasis. How does a cell's membrane help an organism maintain homeostasis? A. Cell membranes use a large ...
Wednesday, March 21, 2012 by Monique

Biology
List 3 features of catalysts.
Wednesday, March 21, 2012 by Jill

biology
what is the different between diet and health.
Tuesday, March 20, 2012 by Lala

biology
Traits like human height and skin color shows a wide range of phenotypes, as opposed to just two ot three. From the standpoints of genese and alleles, explain why is this so.
Monday, March 19, 2012 by tim

biology
do reduced or oxidized forms of carbon carry more energy?
Monday, March 19, 2012 by Anonymous

biology
Why are seeds considered a more effective means of reproduction than spores in a dry environment?
Monday, March 19, 2012 by Anonymous

Biology
The problems of survival of animals on land are very different from those of survivial of animals in an aquatic environment. Describe four problems associated with animal survival in terrestrial environments but not in aquatic environments. For each problem, explain an ...
Sunday, March 18, 2012 by Neil

Biology
What is the role of promoter in lac operon?
Saturday, March 17, 2012 by John

Biology
What results would you expect if KOH or NaOH were omitted in the Benedict's test? Why?
Wednesday, March 14, 2012 by Anonymous

Biology
Among humans, increased interest in food intake normally occurs _____. only after the production of glucose in the liver can no longer meet metabolic needs when fewer calories are taken in than are expended, but only after the body depletes its reserves of fat in the liver via...
Wednesday, March 14, 2012 by Jake

Biology
Music Video Project Biology? Hey! So I am doing a music video project for AP Biology, and my topic is Gene Regulation. I want to know what should be the most important things I should include in my song, and what song I should use (80's/90's/Current) to parody for this...
Wednesday, March 14, 2012 by Sam

biology
explain how the hiv virus destroys the immune system.
Tuesday, March 13, 2012 by andy

Music Video Project
Hey guys! I am in a bit of a dilemma. I am doing a music video project for my AP Biology class and My topic is GENE REGULATION! I have no clue what to sing for it. What could be a good chorus? hook? What should be the most important to include in my song about the topic? Thanks!
Tuesday, March 13, 2012 by Sam

biology
Susan needs to measure and heat the chemical she wants to use in an experiment with a graduated cylinder. Which graduated cylinder is suitable for use?
Tuesday, March 13, 2012 by Ghalaysha

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...
Tuesday, March 13, 2012 by Wendy

biology
what are the advantages for using nanotechnology?
Monday, March 12, 2012 by kally

biology
how can nanobots be used to fight the common cold?
Monday, March 12, 2012 by kally

biology
briefly describe the basic characteristics that all living things on earth have in common
Monday, March 12, 2012 by Abigayle

Biology Question
I have 2 problems/questions I am unsure of the answers. The first one is "how would you demonstrate the Valsalve maneuver using the model lung?" and 2. If a woman is breathing rapidly and deeply after exercise, would TLC, RV, TV, IRV, and ERV stay the same, increase...
Sunday, March 11, 2012 by Mary

Biology
can anyone send me a website link to a Monocot and Dicot Leaf and Stem cells under a microscope? (not cross section) Also, do they both have a cell nucleus?
Sunday, March 11, 2012 by CrissyXD

Biology
Why does the pCO2 value increase during hypoventilation? If hypoventilation causes shortness of breath, would that not increase the CO2 concentration, therefore decreasing pCO2? What am I understanding incorrectly?
Sunday, March 11, 2012 by Bobby

biology
If you have the option to save from extinction either the carnivores oor the primary produccers in an ecosystem which whould you protect? why
Sunday, March 11, 2012 by Rose

biology
If you have the option to save from extinction either the carnivores oor the primary produccers in an ecosystem which whould you protect? why
Sunday, March 11, 2012 by Rose

biology
A medical microbiological lab report indicates that a sample contained a biofilm, and that one species in the biofilm was identified as Neisseria gonorrhoeae. Is this strain of Neisseria likely to be pathogenic? Why and why not?
Sunday, March 11, 2012 by Anonymous

biology:plz someone help
The heart lung machine is used so that surgeons can operate on the arteries supplying heart muscle. These arteries may be diseased. (a) Name these arteries and explain how they may become diseased. (b) suggest why a patient is put on a heart lung machine during such an ...
Saturday, March 10, 2012 by pooja

biology
can toads are considered a pest in australia are there anyways that they can adapt to their surroundings without the food chain being damaged
Saturday, March 10, 2012 by Benji

biology:plz help
state the name for the action of two oppposing miscles, such as the biceps and the triceps.
Saturday, March 10, 2012 by pooja

biology
Why is a denaturing solution used in the Southern blotting technique?
Friday, March 9, 2012 by D

Biology
H+Hb --> HHb HHb --> H+Hb which process is internal respiration and which process is external respiration???
Friday, March 9, 2012 by Saphire

biology
humans have a double circulation system. there is a low pressure circulation and a high pressure circulation. (a) explain how the structure of the heart enables it to pump blood into two circulations at different pressures
Friday, March 9, 2012 by pooja

biology
The heart lung machine is used so that surgeons can oprate on the arteries supplying heart muscle.the arteries may be diseased. (a) Name these arteries and explain how they may become diseased (b) suggest why a patient is put on a heart lung machine during such an operation.
Friday, March 9, 2012 by pooja

biology
The heart lung machine is used so that surgeons can operate on the arteries supplying heart muscle. These arteries may be diseased. (a) Name these arteries and explain how they may become diseased. (b) suggest why a patient is put on a heart lung machine during such an ...
Friday, March 9, 2012 by pooja

Biology
Help please! Do organic fertilizer products (in bags or sacks) decay after some time? If yes, how long will it take to decay?
Thursday, March 8, 2012 by Namie

Biology
for my sister again. what be 2 examples of short wave radiation that can trigger mutation. she only found uv radiation.
Thursday, March 8, 2012 by Mohammad

Biology
What is the difference between Curing, Composting and Fermentation?
Thursday, March 8, 2012 by Namie

Biology
i asking question for my sister again how r gene combina tions reshufled? my sister and i find this paragraph online but we not able to get answer. Sex can introduce new gene combinations into a population and is an important source of genetic variation. You probably know from...
Thursday, March 8, 2012 by Mohammad

Biology
Is Carbon (in soil) bad for plants?
Thursday, March 8, 2012 by Namie

biology
If short hair (L) is dominant to long hair (l), then to determine the genotype of a short-haired animal it should be crossed with Answer a. Ll b. ll c. LL d. All of the above. e. None of the above.
Thursday, March 8, 2012 by carolyn

Biology
As a nurse in a hospital, your observe that certain kinds of pain may be allievated by mere offering of a drug, potent or not. To test this hypothesis, two pain drugs and placebo randomly adminstered to patients following surgery. Time is recorded in hours until patient ...
Wednesday, March 7, 2012 by Anonymous

Biology
Explain how skin, bones and muscles are related to each other and Why is this relationship important to the understanding of the skeletal and muscular systems?
Tuesday, March 6, 2012 by Jerome

Biology
Which of the following would be the most sigificant between mitosis and meiosis? A. Chromosomes are duplicated before mitosis B. Meiosis is not followed by cytokinesis C. Homologous Pairs of chromosomes are split up in meiosis. D. Crossing over occurs in mitosis. So far i got ...
Tuesday, March 6, 2012 by KC

Biology Science
Arrange the following in correct order in food chain- Fish,Plankton,Shark,Crab
Monday, March 5, 2012 by Sweeny

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 ...
Sunday, March 4, 2012 by alex

biology
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?
Sunday, March 4, 2012 by alex

Biology multiple choice question
If a randomly-mating population has an established frequency of 64% for the organisms homozygous dominant for a given trait, what is the frequency of this dominant allele in the gene pool? A. .2 B. .24 C. .36 D. .8 E. .64 I think the answer is D. .8
Sunday, March 4, 2012 by Lisa

Biology
I'm confused on the rule of multiplication and the rule of addition. When do I use each to determine the probability of a genetic trait being inherited.
Sunday, March 4, 2012 by Peter

Biology
Individuals whose characteristics are well-suited to their environment survive. Individuals whose characteristics ar not well-suited to their environment either die or leave fewer offspring. This principle Darwin called survival of the fittest. how i rewrite this definition in...
Sunday, March 4, 2012 by Shreya

Biology
two negative effect of direct artificial selection?
Sunday, March 4, 2012 by Astrid

Biology
my sister still be sick so i still helping her post questions. i write paragraph from her textbook that go with question. Ultimately, Darwin recognized in nature a process that operates in a manner similar to the way artifical selection worked on farms and in fields. Darwin ...
Sunday, March 4, 2012 by Mohammad

Biology
Arrange the following in correct order in food chain- Fish,Plankton,Shark,Crab
Saturday, March 3, 2012 by Zoopy

Biology - ms. sue
ms. sue can u please tell me about noah's flood. exactly what it was and how it got thought of to make fossils? i get bits and pieces of information like how species get buried in flood. (sediment) but my sister and i look at all sites and they not tell how fossils came to...
Friday, March 2, 2012 by Mohammad

Biology ms, sue
ms. sue i think you told shreya about biology site. there be any more sites free like that?
Friday, March 2, 2012 by Mohammad

Biology - evolution
how new characteristics enter gene pool? i look for simple answer to this to help my sister. one thing i look at it say about mutation.
Friday, March 2, 2012 by Mohammad

Biology - fossils
my sister Shreya be sick so i posting her biology questions. one question ask hw did creationists explain fossils. she write this be about noah's flood but what be noah's flood? i look up on internet for her and there be too much confusing words. i only be able to make...
Friday, March 2, 2012 by Mohammad

Biology
The observed distribution of offspring was: black-red 1,070; black-white 177; green-red 180; green-white 1,072. Based on these data, what is the recombination frequency? A. 86% B. 7% C. 17% D. 14% E. 30% Background Info: In a particular species of mammal, black hair (B) is ...
Friday, March 2, 2012 by Peter

Biology
Jessica has no dimples and attached ear lobes. Jessica's mother has dimples and detached ear lobes, and her father has no dimples and attached ear lobes. Assuming independent assortment, what are the chances that her new baby brother will have dimples and attached ear lobes?
Wednesday, February 29, 2012 by Peter

Biology
Our most potent weapon in the fight against viruses is: 1.Antibiotics and sulfa drugs 2.Vaccinations 3.Gene therapy 4.Sulfa drugs 5.Antibiotics I dont know if it is 2 or 5. I am thinking more 5 but then I think about 1 also. Someone please help.
Tuesday, February 28, 2012 by Jaxon

biology
list 2 forms of oxygen found in the atmosphere name the process by which [1]oxygen from the atmosphere is used up [2]oxygen is returned to the atmosphere
Monday, February 27, 2012 by akansha

Biology
How did Watson and crick's model explain why their are equal amounts of thymine and adenine in DNA?
Saturday, February 25, 2012 by may

Biology
What is the importance of embryo polarity during cleavage?
Saturday, February 25, 2012 by Timothy

american history
I nee help revising my essay here it is This is what my general view on American History. Well let me tell you it’s a course that we all have to take in high school to graduate. In school we are confronted with American History, state History and general courses of the ...
Friday, February 24, 2012 by connie

Biology
Some questions fall outside of the realm of science;which of the following questions could not be ansewered usingf the scientifec method
Friday, February 24, 2012 by Anonymous

Biology
Denny, who is allergic to wool, accidentally wears a scarf that is 50% wool. one hour later, after removing the scarf, she finds that the skin around her neck is red and swollen. Explain what has happened to her. (Our unit is Blood and immunity)
Friday, February 24, 2012 by Soar

Biology
Is nail sulcus and nail fold the same thing?
Friday, February 24, 2012 by Lil

biology
Is Starch a long-term energy source or short-term energy source? please explain!
Thursday, February 23, 2012 by sarry

biology
Is Protein a short term energy source or a long term energy source? please explain
Thursday, February 23, 2012 by sarry

biology
Discuss the concept of species What ways do modern taxonomists use to distinguish different species?
Wednesday, February 22, 2012 by sharday

biology tutor on jiskha
i post my biology questions here today and few days ago no teacher reply. there not any biology tutor on here?
Wednesday, February 22, 2012 by Shreya

biology
you are investigating a crime. someone has died as a result of a gun shot from far away. The suspect claims that it couldnt have been him because he was with the victim at the time of the murder. they were in a restaurant eating pasta. how could you test to see if the suspect ...
Wednesday, February 22, 2012 by sarry

BIOLOGY
The doubling time of a type of bacteria is 35 minutes. If every bacterium reproduces, then after 35 minutes a population of 64 bacteria will have grown approximately to what size?
Wednesday, February 22, 2012 by STORMY

Biology Lab
HOw much Nacl (MW= 58.44g) would you need to ass to a solution if you wanted to make 100 ,mL of 4* 10 to the -3 M NaCl?
Wednesday, February 22, 2012 by Amber

science
why is the gibb free energy important in plant biology
Wednesday, February 22, 2012 by Steph

Biology
Are saltwater gills different from freshwater gills? Please explain to me
Wednesday, February 22, 2012 by Rueangsit

biology
any site i go onto that be animation site to find out about nucleic acids and protein synthesis? this chapter soo hard. codon, anticodon i need animation.
Wednesday, February 22, 2012 by Shreya

biology what is DNA
why is DNA replication necessary to life?
Wednesday, February 22, 2012 by Shreya

biology
why DNA replication necessary to life?
Tuesday, February 21, 2012 by Shreya

Biology- DNA
why dna replication necessary to life? i think it because it carry genetic information?
Monday, February 20, 2012 by Shreya

biology
Regulation of an enzyme's activity occurs a) before the enzyme is produced b) during the production of the enzyme. c) when the enzyme already exists in the cell. d) at any point on the enzymatic production pathway. Thank you
Monday, February 20, 2012 by chris

biology
Which nutrient functions BOTH as an enzymatic cofactor and as a stabilizer of ribosomes and nucleic acids? a) potassium b) phosphorus c) calcium d) Magnesium Thanks for your help!!
Monday, February 20, 2012 by tom

Biology
Most frog species have a distinct tadpole life stage. However, microhylids of Australia and New Guinea do not have a tadpole stage, but tadpole features appear and disappear during development in the eggs. This shows that A) microhylids need to be very large. B) microhylids ...
Monday, February 20, 2012 by Connan

Biology
Does the amplitude of QRS complex change with the pulse amplitudes? Why or why not? So I think that the amplitude of the QRS complex should cause the pulse amplitude to change, because the pulse pressure is determined by the force of contraction of the heart. Am i on the right...
Friday, February 17, 2012 by Sarah

biology
100 ml of agno3 at 0.1g/ml
Friday, February 17, 2012 by Anonymous

biology
suggest a reason for the failure of some of the molecules to diffuse through the semipermeable membrane.
Friday, February 17, 2012 by kelly

biology anyone..
please i need this by tomorrow. if nucleii are 3 micrometres long, how big are the cells? these r 2 questions i not get.
Thursday, February 16, 2012 by Shreya

biology
this part of organism usually found underground, what organele conspicuously absent?
Thursday, February 16, 2012 by Shreya

biology
For this assignment you will be using the course companion Web site, MasteringBiology. View and complete the MP3 tutorial: The Process of Science. and “How Does Acid Precipitation Affect Trees?” After completing the activity, develop two alternative hypotheses and ...
Wednesday, February 15, 2012 by sharday

biology
Create and describe a data set including independent and dependent variables (be creative) and a table of the data. Explain how this would best be graphed to accurately present the results of the research (type of graph, axes, and scale limits – minimum and maximum).
Wednesday, February 15, 2012 by sharday

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.
Wednesday, February 15, 2012 by Lucy

Biology
Why can this statement not be evaluated by the scientific method "Trees emit psychic screams when you cut them down."?
Wednesday, February 15, 2012 by Anonymous

probability
The probability that a student passes Biology is 0.35 and the probability to pass Chemistry is 0.63. If the probability to pass both Biology and Chemistry is 0.4, what is the probability that he will pass either Biology or Chemistry?
Wednesday, February 15, 2012 by Anonymous

biology
Can someone please explain to be the concept of - Rate of exchange is proportional to a cells surface area and ... the amount of exchange material is proportional to a cell's volume. (the topic we are learning is called "Animal form and function")
Tuesday, February 14, 2012 by martha

biology
Total body sodium content determines extracellular fluid volume, and is regulated by the balance between sodium intake and sodium loss. Oubain is a poison that causes blockage of the Na+/K+ ATPase. Which of the following would occur after administration of oubain? Explain why...
Tuesday, February 14, 2012 by jack bauer

biology
1) I can't finish my homework due to this one question, please tell me where I can find this question, thanks! What are levels of protein structure of Angiosperms?
Tuesday, February 14, 2012 by Jessica

Biology
In ion exchange chromatography, why do you have to be careful not to disturb the resin bed or let air enter the resin bed? I get that it disturbs resolution.. but I'm not sure exactly what to say.
Sunday, February 12, 2012 by Elle

Biology
How are soldier crabs useful to us and what things are humans doing to wipe them out?
Sunday, February 12, 2012 by Jason

Biology
What important role does the marine compost play in a marine ecosystem?
Saturday, February 11, 2012 by Mae

biology
how to identify the blood types of an offspring?
Saturday, February 11, 2012 by diane28

Biology
Give diffferences/contrast between a Marine environment and an estuarine environment.
Friday, February 10, 2012 by Mae

biology
1. explain that not all cell genes show simple patterns of dominant and recessive alleles. 2. explain how to identify th blood types of an offspring. 3. discuss how gender in humans is determined.
Friday, February 10, 2012 by diane28

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Homework Help: Science

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