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September 16, 2014

Homework Help: Science: Biology

Recent Homework Questions About Biology

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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 ...
Saturday, March 2, 2013 at 12:44pm

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?
Friday, March 1, 2013 at 8:46pm

biology
Apply the Law of Conservation of Energy to food. Trace the energy from its beginning point, to the point where it was stored or used.
Friday, March 1, 2013 at 8:45pm

biology
Apply the concept of RESPIRATION. What happens inside of a human being when he or she eats various foods? During Respiration, is the energy in the food converted into heat, or into some other chemical (name the chemical!)
Friday, March 1, 2013 at 8:43pm

BIOLOGY
The gastrointestinal phase of gastric secretion:? a. is controlled by the entrance of acidic chyme into the duodenum. b. leads to increased gastric secretion if duodenal pH falls below 2. c. only stimulates gastric secretion. d. will decrease gastric secretion when gastrin is ...
Friday, March 1, 2013 at 4:29pm

Biology
Why mitochondrion and mitotic division are absent in prokaryotic cells?
Friday, March 1, 2013 at 2:11am

Biology
Why mitochondrion and mitotic division are absent in prokaryotic cells?
Friday, March 1, 2013 at 2:11am

biology
what happens to the UTR during RNA processing?
Thursday, February 28, 2013 at 10:12pm

biology
What do multicellular genomes spend a larger proportion of their sequences on (in terms of enhanced complexity)?
Thursday, February 28, 2013 at 10:11pm

biology
what specific stage during the cell cycle does random fertilization occur?
Thursday, February 28, 2013 at 10:11pm

biology
What is the ploidy (haploid/diploid) level and how many sister chromatids are there in your own cells during anphase I, anaphase II, and telophase II (includes cytokinesis)?
Thursday, February 28, 2013 at 10:10pm

biology
Briefly describe the structure and function of three different cellular systems that combine proteins along with necessary RNAs to catalyze covalent bond formation and/or hydrolysis reactions (i.e., function as ribozymes)?
Thursday, February 28, 2013 at 10:09pm

biology help plz?????????????????
Complete the following paragraph relating to the enzyme, β–galactosidase. This enzyme hydrolyses the disaccharide lactose to constituent monosaccharides, galactose and glucose. Drag and drop the appropriate words into the correct space. For white spaces in the ...
Thursday, February 28, 2013 at 9:11am

biology
The frequency of the sickle cell disease in parts of Central Africa is as high as 10 percent compared to a frequency of .5 percent in the US. Use the percentages for the Central Africa population and the US population to calculate the frequency of the heterozygous and ...
Wednesday, February 27, 2013 at 8:22pm

Biology
When does DNA synthesis occur???
Wednesday, February 27, 2013 at 11:37am

biology
what characteristics appear to show consistent development over the 4 million years of hominid evolution?
Tuesday, February 26, 2013 at 10:12pm

Biology
When cells increase in size, the surface area to volume ratio decreases. But which surface area to volume ratio is better to the cell as well as to the organism? The larger or smaller ratio?
Tuesday, February 26, 2013 at 2:10am

Biology
Which of the following mutations would you expect to have the greatest effect on a living cell? A. A mutation that changes a single base in a region of noncoding DNA B. Energy release from plutonium C. Consumptions of preexisting organic compounds Im clueless!!!
Monday, February 25, 2013 at 10:41pm

biology
Why are the subclavian vein and subclavian artery positioned where they are relative to each other?
Monday, February 25, 2013 at 6:27pm

finance
You have chosen biology as your college major because you would like to be a medical doctor. However, you find that the probability of being accepted to medical school is about 6 percent. If you are accepted to medical school, then your starting salary when you graduate will ...
Monday, February 25, 2013 at 3:55pm

biology
In a chorus of male frogs of one species, which would be considered by evolutionary biologists to be the fittest? The biggest frog. The frog that has the most descendants. The frog with the largest territory. The loudest frog. The frog that attracts the most females. I am ...
Sunday, February 24, 2013 at 9:46pm

biology urgent
In mice, a gene controlling coat colour has 2 alleles; B (black) and b (white). A pure breeding black mouse is crossed to a white mouse and all the offspring are black. The offspring are then crossed to white mice. The phenotypes of the offspring of this second cross are ...
Sunday, February 24, 2013 at 9:39pm

Biology
Which of the following mutations would you expect to have the greatest effect on a living cell? A. A mutation that changes a single base in a region of noncoding DNA B. Energy release from plutonium C. Consumptions of preexisting organic compounds
Sunday, February 24, 2013 at 8:53pm

Biology
Which of the following mutations would you expect to have the greatest effect on a living cell? A. A mutation that changes a single base in a region of noncoding DNA B. Energy release from plutonium C. Consumptions of preexisting organic compounds Im clueless!!!
Sunday, February 24, 2013 at 5:25pm

biology
Describe human dispersal, animal dispersal- eating, hook on fur and bursting. Also how they are adapted.
Sunday, February 24, 2013 at 2:57pm

biology
Can a snail survive in an aquarium with no living plants in it? What do fish owners do to compensate if their aquarium has no plants?
Saturday, February 23, 2013 at 6:41pm

biology
27. Pretend you are a carbon atom that was part of a molecule of CO2 dissolved in the water at the beginning of the experiment. Describe a path you could take through both organisms in this experiment, including the molecules you would be a part of and the chemical reactions ...
Saturday, February 23, 2013 at 6:30pm

Biology
Please Help Quick,Write Out The Balanced Chemical Equation For Respiration In An Athlete In A Race.
Friday, February 22, 2013 at 9:01pm

Biology
What results in the combination of the haploid sets of chromosomes from two individuals into a diploid zygote
Friday, February 22, 2013 at 7:40pm

Biology
What results in the combination of the haploid sets of chromosomes from two individuals into a diploid zygote
Friday, February 22, 2013 at 6:22pm

Biology
Which disorder causes a natural immunity to Malaria?
Friday, February 22, 2013 at 5:17pm

Biology
1) What memory system is sensation responsible for? Sensory, short term or long term memory system? Explain. 2) How does encoding memories relate to transfer appropriate processing and fluid intelligence?
Friday, February 22, 2013 at 1:26pm

biology help?
We anticipate the evidence gathered by you will indicate that three of the five species are in greater need of prioritising for conservation compared with the other two. You should start your account by very briefly explaining why these two species were considered to be of ...
Thursday, February 21, 2013 at 4:02pm

Psychology/Biology Help!!
1) What memory system is sensation responsible for? Sensory, short term or long term memory system? Explain. 2) How does encoding memories relate to transfer appropriate processing and fluid intelligence?
Thursday, February 21, 2013 at 12:16pm

Biology
What kinds of substances could interfere with the Dische's test for DNA? I'm wondering if proteins can interfere with this. Please help me
Wednesday, February 20, 2013 at 6:57pm

biology helppppppppppppppp
(This homework question has been removed due to a copyright claim submitted by The Open University.)
Wednesday, February 20, 2013 at 12:20pm

Biology
Please Help Quick,Under Anaerobic Condition,Explain What Happens To Glucose In Yeast And In Humans?
Wednesday, February 20, 2013 at 5:22am

Statistics
In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 15% of your total grade, each major test is worth 22.5...
Tuesday, February 19, 2013 at 5:06pm

SCIENCE Biology (urgent)
1.Do organisms benefit from being classified as a different species?How? 2.Importance of classifying organisms.. I;m not good in science...
Tuesday, February 19, 2013 at 6:36am

biology
People with a lactose intolerance are able to take products such as Lactaid that contain the lactase enzyme with their meals. These products can be taken in pill form. Considering the fact that the pill form of the enzyme would have to travel through the person's stomach, ...
Sunday, February 17, 2013 at 9:57pm

biology
substrate concentration and pH affect enzyme activity. Is there another environmental condition you think could affect enzyme activity How would you test your hypothesis?
Sunday, February 17, 2013 at 8:10pm

biology
30. Enzymes function most efficiently at the temperature of a typical cell, which is 37 degrees Celsius. Increases or decreases in temperature can significantly lower the reaction rate. What does this suggest about the importance of temperature-regulating mechanisms in ...
Sunday, February 17, 2013 at 8:09pm

Biology
How is the anaerobic energy system not entirely anaerobic?
Sunday, February 17, 2013 at 7:36pm

biology
What is the name of the instrument use in measuring Ph slope,depth of water,hydrogen ion concentration.
Saturday, February 16, 2013 at 4:49am

biology
what is a full citation guide of an article?
Saturday, February 16, 2013 at 2:03am

biology help?
In 1857, Louis Pasteur discovered that yeast is a living organism. The activity of yeast causes fermentation – baker’s yeast, Saccharomyces cerevisiae, has been used for centuries in the production of bread, beer and wine. In the absence of oxygen, yeast is able to ...
Friday, February 15, 2013 at 4:51am

BIOLOGY PLEASE HELP!!!!!!!!!!!!!!!!
embedded protein in the electron transport chain where h+ ions flow back into the matrix of the mitochondria Crossword puzzle 11 spaces sixth letter is n cant figure it out?
Thursday, February 14, 2013 at 8:21pm

biology
where do h+ ions accumulate in the mito chondria? 18 spaces 17th letter is c cant figure it out?
Thursday, February 14, 2013 at 8:00pm

biology
embedded protein in the electron transport chain where h+ ions flow back into the matrix of the mitochondria 11 spaces sixth letter is n cant figure it out?
Thursday, February 14, 2013 at 7:57pm

Biology
what molecule is released before acetyl coa enters the krebs cycle Doing cross word puzzle 13 spaces cant figure it out?
Thursday, February 14, 2013 at 7:55pm

Biology
Which chromosome is more exposed to sex-linked disorders X or Y chromosome? Why?
Thursday, February 14, 2013 at 12:14am

Biology
Are there any differences between the thyroid gland, thymus gland, and spleen in a male and female pig?
Wednesday, February 13, 2013 at 9:59pm

Biology
What is the significance of the different length: volume ratios of the digestive organs?
Wednesday, February 13, 2013 at 9:58pm

Biology
list the 3 domains and the kingdoms included in each. please help me!!!! :) thanks
Wednesday, February 13, 2013 at 8:32pm

SCIENCE Biology (urgent)
answer it with 2 paragraphs.. 1.How does chlamydia infect the human body? 2.What are the complications that can result from chlamydia infection? 3.What are the benefits of the CPAF inhibitor? 4.In what instances can control of endocycling be beneficial? 5.What are the ...
Tuesday, February 12, 2013 at 6:56am

Biology
DNA synthesis starts at the Replication Origin. In what way(s) do you think that the Replication Origin might be similar to a Promoter and in what ways might it be different?
Sunday, February 10, 2013 at 10:34pm

biology (confused)
Hi Will someone please check my answers. I went to biology-forums(dot)com and registered but i really don't know how to post my questions and i really need help (with the questions). Thanks in advance. 1. Which process involves both passive and active transport? a.)...
Saturday, February 9, 2013 at 9:10pm

biology (cell bio)
Can someone explain the Nernst Equation and its purpose, in as simple terms as possible? For some reason it's just not clicking with me. Thanks!
Saturday, February 9, 2013 at 8:34pm

biology help!!
Please check my answers. I did my best. 1. Which process involves both passive and active transport? a.)facilitated diffusion<---- b.)cotransport c.)bulk transport d.)transport through electrogenic pumps e.)osmosis 2. How does the liver in a healthy body respond to elevated...
Saturday, February 9, 2013 at 7:33pm

biology
Please check my answers. I did my best. 1. Which process involves both passive and active transport? a.)facilitated diffusion<---- b.)cotransport c.)bulk transport d.)transport through electrogenic pumps e.)osmosis 2. How does the liver in a healthy body respond to elevated...
Saturday, February 9, 2013 at 6:20pm

Biology
what kingdom does opalina belong to? and... what kingdom does rockweed belong to?
Saturday, February 9, 2013 at 2:37pm

biology
Will someone please check my answers? 1. Which process results in an individual inheriting the incorrect number of chromosomes? a.)mutation b.)nondisjunction<-- c.)segregation error d.)duplication error e.)linkage 2. Which data in Hershey and Chase's experiment ...
Friday, February 8, 2013 at 11:34pm

biology
a boy inherits genes for tallness,but his growth is limited as a result of poor nitrition. this is an example of 1)an inherited disorder. 2)environmental influence on gene expression . 3)expression of a hidden trait 4)a characterstic controlled by more than one pair of genes. ...
Friday, February 8, 2013 at 12:44pm

Biology
What is one negative effect of indirect artificial selection?
Friday, February 8, 2013 at 2:10am

Biology Difference b/w Heat Exhaustion/Heat Stroke
I want to know the causes of heat stroke and heat exhaustion. I cant seem to find separate causes for the two, finding very different answers online :|
Friday, February 8, 2013 at 12:53am

Biology
You are studying a large population of claims of which 396 are pink (t) and 557 are Tan (T). Tan clams are completely dominant over pink clams. Calculate the following: 1. The frequencies of each allele. 2. The expected genotypic frequencies. 3. The number of heterozygous ...
Thursday, February 7, 2013 at 11:37pm

biology
JANUARY 2009. This graph represents hormons and events in the 1.process of fetal growth and development. 2.process of meiotic cell divission during sperm dev elopment. 3.reproductive cycle of males. 4.reproductive cycle of females. i have to choose one of them what is the ...
Thursday, February 7, 2013 at 8:34pm

Biology
Hey I am doing a lab, the link is down h t t p : //w w w . sd67 . bc . ca/schools/salc/biology%2012/module%20c%​20-%20human%20biology/unit%2010%20-%20re​spiratory%20system/Homeostasis%20Lab .pdf And I really would like help with #1 My data is right here Pre ...
Thursday, February 7, 2013 at 7:53pm

Biology
1. 525 jackrabbits in the desert. Big ears (B) are dominant among jackrabbits, while stubby ears (b) are recessive. Of the study of this population, 189 rabbits have stubby ears. Calculate: 1.The frequency of the "bb" genotype 2.The frequency of the "b" ...
Wednesday, February 6, 2013 at 11:35pm

General Biology
There is only one bag potato chips left on the planet Earth. Ed and Trina have found it on the far side of ‘look out’ mountain with 2 grams of water inside the bag. The chips were soggy. Until another source of nutrients has been discovered they must share this bag ...
Wednesday, February 6, 2013 at 7:01pm

Biology....someone who can explain something to me
can someone explain the Miller-Urey Experiment to me? I've read it again and again and I just don't really get it. Please help me out here.
Tuesday, February 5, 2013 at 9:08am

biology
7. Imagine you have 2 chambers connected by a flexible, semipermeable membrane and completely filled with solutions - one chamber contains 50ml of a 50mM NaCl solution (A), and the other (B) contains 100 ml of a 100mM NaCl solution? If the membrane permits both water and NaCl ...
Tuesday, February 5, 2013 at 12:41am

Biology
6. Describe and explain what would happen to a cell containing 100mM NaCl, 150 mM glucose, and 100 mM protein if placed into: a) distilled water? (describe the volume change if the cell were permeable to water only). b) a solution of 100mM NaCl, IF the cell were permeable to ...
Monday, February 4, 2013 at 12:24am

Biology...
1. References are made by the anatomist to the front,back,head and tail of the body. What anatomical reference terms are used to describe each of these directions? My answer: anterior, posterior, I am not sure with head and tail Is it superior and inferior?? 2. A person lying ...
Sunday, February 3, 2013 at 7:36pm

biology
How to make structure of DNA ladder like
Sunday, February 3, 2013 at 1:41pm

biology help plz?????????????????
product of The oxidative phosphorylation / electron transport is ? in stage of glucose oxidation a)pyruvate b)oxygen c)water d)NAD e)ATP f)NAD.2H g)carbon dioxide h)ADP CHOSE TWO ANSWER FROM THE FOLLOWING LIST product of Glycolysis is? a)pyruvate b)oxygen c)water d)NAD e)ATP f...
Saturday, February 2, 2013 at 9:51am

biology help plz?????????????????
the mRNA squence below is shown along with the polypeptide which would be produced when it is translated .what polypeptide would be produced if the fifth base in the mRNA sequence shown had been changed to A as result of a mutation in the DNA from which the mRNA wa transcribed...
Saturday, February 2, 2013 at 9:26am

biology
What is the scientific reason to the larger population of females than males in countries in relation to chromosomes?
Saturday, February 2, 2013 at 3:32am

biology
List any five anatomical differences between monocot root and dicot root.
Friday, February 1, 2013 at 2:23am

biology
property of muscle in which the strength of its contraction can vary from weak to strong
Thursday, January 31, 2013 at 2:24am

biology
nerve fiber control over muscle or gland effector activity
Thursday, January 31, 2013 at 1:58am

Biology
What is a cross between plants that involves one characteristic called
Wednesday, January 30, 2013 at 7:55pm

biology
Gastrulation geometrically separates the future ectoderm, from what?
Tuesday, January 29, 2013 at 10:13pm

biology college
which leukocyte is predominant in the blodd smear?explain by comparing it with other leukocytes and red blood cells in the blood smea
Tuesday, January 29, 2013 at 8:56am

Biology
In a population of jaguars, a gene with two alleles encodes the fur color. Allele B causes melanism (dark fur) and is dominant over allele b, which results in light colored fur. Suppose that there is a migration event, producing a population with 60% BB, 20% Bb and 20% bb ...
Monday, January 28, 2013 at 2:43pm

Biology
In a lab experiment, we experimented with 1% glucose solution and Sorenson's solution to determine pH levels and whatnot; the other part of the lab was to determine which one, if either, was a buffering solution. According to the notes my instructor gave us, a buffers are ...
Monday, January 28, 2013 at 1:10pm

biology
1. discuss the mechanisms that organisms undergo to accomplish morphogenesis 2. Describe the contributions of drosophila and nematodes in advancing understandings of development
Sunday, January 27, 2013 at 6:33pm

Biology
How does diabetes affect the brain?
Sunday, January 27, 2013 at 1:27pm

Biology-reaction time
How can someone improve their reaction time? also what type of athlete would have a above average reaction time? Please explain why?
Sunday, January 27, 2013 at 1:14am

BIOLOGY
What is the majority of the mass of the heart composed of? a. Endocardium b. Myocardium c. Pericardium d. Endothelium
Saturday, January 26, 2013 at 8:05pm

Biology
Okay so if i have two enzyme catalyzed reactions: 1) delta g of the ES = -22kJ/mol 2) delta g od the ES = 42 kJ/mol Is this first reaction going to have a higher reaction rate because the of the negative delta g, because doesnt a negative delta g give you a spontaneous ...
Saturday, January 26, 2013 at 7:00pm

Biochemistry, Biology, Chemistry
An enzyme works on two substrates, S1 and S2. Its Km for S1 is 100mM and its Km for S2 is 10mM. Based on this information, answer the following questions: 1. For a given [E] will it have a higher Vmax for S1 or S2? Explain your answer 2. Is S1 or S2 a better substrate for the ...
Saturday, January 26, 2013 at 6:53pm

biology
1. discuss the mechanisms that organisms undergo to accomplish morphogenesis 2. Describe the contributions of drosophila and nematodes in advancing understandings of development
Saturday, January 26, 2013 at 2:36pm

biology
Mode of formation of nutrition(two pages)
Thursday, January 24, 2013 at 4:33am

Biology
What piece of evidence would actually allow us to measure the actual rate at which continental drift is occurring?
Wednesday, January 23, 2013 at 9:53pm

biology
what is theoffspring of a yellow seed and a green seeds genotype and phenotype?
Wednesday, January 23, 2013 at 8:29pm

biology
why would you like to watch wildlife on television or visit the zoo?
Tuesday, January 22, 2013 at 11:40pm

Biology
How do scientists calibrate a molecular clock? A)They determine the number of mutations accumulated in a gene of a species of known age. B)They compare the ticking of the molecular clock with that of the atomic clock. C)They use the clock that ticks at the appropriate rate for...
Tuesday, January 22, 2013 at 12:21pm

Biology
What is a molecular clock? A)a tool scientists use to date fossils B)a tool scientists use to determine how many mutations a species accumulates over time C)a tool scientists use to determine how long two species have been evolving independently D)a tool scientists use to ...
Tuesday, January 22, 2013 at 11:08am

biology
how can u investigate sugars or starch in a banana
Monday, January 21, 2013 at 11:23am

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