Recent Homework Questions About 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 at 9:57pm
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 at 9:43pm
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 at 1:09am
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 at 6:18pm
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 at 10:46pm
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 at 10:45pm
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 at 5:56pm
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 at 8:43am
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 at 7:03pm
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 at 5:51pm
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 at 12:38pm
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 at 8:07pm
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 at 7:06pm
Writeacher, I wanted to thank you for all what you have done for me and for my professional growth. We have worked really hard on the project over the last few days (though I was in bed with flu!) By the way, I used your suggestion as a title for the whole project. If the ...
Friday, February 10, 2012 at 4:26am
One last thing. I varied this sentence since we are going to involve students from different third classes.I don't know how to express the second part. Pupils taken from different (or various) tenth classes will be involved in the project since the scientific project's...
Thursday, February 9, 2012 at 1:42pm
Writeacher, thank you very much! Here are some sentences I varied and I urgently need you to check. I need to clarify those things. Could you please help me express sentence 1? We need to impress the EU to support the project!!! Rationale 1)The preparatory meeting made clear ...
Thursday, February 9, 2012 at 4:09am
Here are the integrations into ongoing activities which refer to the two other schools. Thank you very much! 1) The project, its cycle and the outcomes will be integrated as followed: .......Gymnasium: The 10th class will be involved in project because the project subject is ...
Wednesday, February 8, 2012 at 4:00pm
I have codone AUG. Which one of amino acids will be involved in protein making, if nucleotide with adenine (A) will be changed to nucleotide with cytosine (C)?
Wednesday, February 8, 2012 at 1:31pm
Thank you very, very much for helping me! I still have to mention a few things to connect the description of the school to the need of promoting the study of English and IT. I hope you can help me express them. 1) I also wanted to say that students from the applied sciences ...
Tuesday, February 7, 2012 at 5:06am
Here is the second part of the school description I need to translate. Some words are unclear and the sentences are too wordy. I need your help to improve them. 1) third branch includes the study of two foreign languages: English and French and addresses to all those who wish ...
Monday, February 6, 2012 at 8:09pm
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?
Saturday, February 4, 2012 at 6:52pm
Describe some of the physiological changes that happen to the cell membranes of a rainbow trout as it acclimatizes to cold, water at 4 degrees Celsius, after living at 16 degrees Celsius for a long time?
Saturday, February 4, 2012 at 6:51pm
Would you expect an ectoparasite, such as a bird louse, that lives its entire life on the body of a homeothermic host, to have a broad thermal tolerance? How about mite that lives on the bodies of rattlesnakes?
Saturday, February 4, 2012 at 6:51pm
what be the greatest visual magnification ahieved with normal kind microscopes like compound type? that be 1000x. but how you can determine this for any microscope? what be the depth of field? and what power be depth of field the smallest? what power an object be the biggest? ...
Saturday, February 4, 2012 at 5:23pm
Tube # 1: 1 ml of water, 3 ml of glucose-1-phosphate and 3 ml of Enzyme. Tube # 2: 1 ml of Ph 7 buffer, 3 ml of glucose-1-phosphate and 3 ml of Enzyme. Both of these reactions tested positive, and the same enzyme was used for both tubes. Why Did you get get a positive reaction...
Saturday, February 4, 2012 at 11:59am
Using a special balloon that is permeable to water but not sucrose to make an "artificial" cell. The balloon is filled with a solution of 20% sucrose and 80% water and is immersed in a beaker containing a solution of 40% sucrose and 60% water. The solution in the ...
Saturday, February 4, 2012 at 11:29am
Predict which would diffuse faster, briefly explain why. a. Methylene blue or KMnO4 with the same concentration b. 1.0M vs 0.1 M methylene blue solution c. KMnO4 at 0oC and 100oC
Thursday, February 2, 2012 at 6:21pm
Give the sequence of a reverse primer used to insert a BamHI site (GGATCC) at the 3' end of the following sequence: 5' CTGAACGTCCAAGGCTTAA 3' 3' GACTTGCAGGTTCCGAATT 5' Make sure you indicate your primers polarity.
Tuesday, January 31, 2012 at 11:16pm
If I had an experiment where I was testing how the membrane permeability is affected by ethanol, and by doing this had to observe thin onion slides with different ethanol concentrations and had to count how many nuclei were seen through the microscope once being stained. My ...
Tuesday, January 31, 2012 at 6:08pm
Which of the following statements about the image show below is not an observation? (The object is a the bug) a. The insect has 3 legs on the left side. B. The insect has a pattern on its back. C. Then insects pattern shows that it is poisonous. D. The insect is green, white, ...
Tuesday, January 31, 2012 at 11:58am
We did an assignment called the tooth pick fish and the yellow fish were in danger then all the green fish disappeared because they were in a hostile environment i don't fully under stand this question though Have any genes disappeared entirely?
Tuesday, January 31, 2012 at 10:35am
Yellow genes are recessive to green; green are dominant to both red and yellow. Which color of genes disappeared faster when the environment was hostile to them? Why?
Tuesday, January 31, 2012 at 10:30am
I have a question and I'm not sure if my answer is correct? The heart is supplied with blood by: diffusion through heart wall right and left cardiac arteries arteries that branch directly from pulmonary arteries arteries that branch directly from aorta I know the heart ...
Monday, January 30, 2012 at 2:51pm
I have to do a line graph showing generation time every 20 mins a cell diving upto 360 mins. using binary fission . am getting mixed up how to mark it down on two axis.9 boxes with mini boxes of 10 in axis i was going to use for time and vertical axis has 14 large boxes within...
Sunday, January 29, 2012 at 2:10pm
There is probably a really obvious answer to this but could you help please? In his lifetime a man produces many millions of spem cells and yet he is most unlikely to have more than ten children. Suggest a biological advantage of producing such vast numbers of sperm
Sunday, January 29, 2012 at 7:52am
How can I revise this sentence? with the addition of a lexical and skills syllabus on biology. (therminology used in biology to describe biodiversity) 1) Do you think that the following should be included into the objectives or the results of students' analyses on water? 2...
Saturday, January 28, 2012 at 12:11pm
Could you please tell me if everything is OK? Thank you. I had to include the linguistic objectives of the project as well as the methods we are going to employ. Linguistic objectives 1)To provide students with the necessary linguistic structures to operate in a global work/...
Saturday, January 28, 2012 at 11:06am
2. Find a media piecearticle, video, presentation, song, or otherthat recognizes the fundamental concepts of chemistry in biology. Include the link or reference citation for the piece and describe how it helped you better understand how fundamental concepts of ...
Thursday, January 26, 2012 at 11:59pm
Consider that the human brain weighs about 1 kg and contains 10^11 cells. Assuming that each cell is entirely filled with water, and knowing that 1 cm^3 of water weighs 1 g, calculate the volume of a brain cell (in picoliters).
Thursday, January 26, 2012 at 2:57pm
I just want to know if my answers are right for this folowing: 1. The nose is MEDIAL to the ears. 2. The elbow is DISTAL to the shoulder and PROXIMAL to the wrist. 3. The heart is ANTERIOR to the spine. 4. The stomach is DEEP to the ribs. 5. The pinky finger is DISTAL to the ...
Monday, January 23, 2012 at 7:55pm
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.
Monday, January 23, 2012 at 12:30am
I am doing a university application form where I am asked questions it asks: *Why are you interested in this program? (100 words or less) I applied for Biological Sciences-Major Human Biology. My question is, would it be ok if I talked about the major instead of general ...
Saturday, January 21, 2012 at 2:16pm
A dominant gene A produces wire-haired texture in dogs. Its recessive aamllele a produced smooth hair. Cross the heterozygous wire-haired dog with homozygous smooth-haired dog. List the genotype and phenotype ratios of all the possible offspring.
Saturday, January 21, 2012 at 2:10pm
which of the follwing is best definition of science? A.a body of knwolege gathered throgh experiments. B.a process of accidental discorery. C. a search for answers to questions about the natural world. D. a method of asking testable questions based on hypothesis.
Thursday, January 19, 2012 at 7:44pm
The transport of blood by the combining of endothelial cells to form a capillary is an example of: An emergent property Natural selection Adaptation A population Asexual reproduction Is it Asexual reprod
Wednesday, January 11, 2012 at 10:57pm
Sometimes words appear as though they begin with a prefix when they actually do not. Each of the following word groups contains a word that looks as though it begins with a number prefix, but does not. Write the word that has no prefix in the blank at the right. 1.centipede,...
Wednesday, January 11, 2012 at 10:54pm
In an experiment designed to measure the distance a golf ball is hit by clubs made of different material, a standardized variable would be: A The distance the golf ball traveled B The type of material the club is made of C The material the golf ball was made of D The wind ...
Wednesday, January 11, 2012 at 10:18pm
Biology - Genetics
Please help me!!!! I need help with this practice test question. In Guinea pigs, the brown coat (B) is a dominant over the cream-coloured coat (b), and straight hair (H) is dominant over curly hair (h). Using a Punnett square, complete the cross between a heterozygous brown, ...
Tuesday, January 10, 2012 at 9:07pm
Everybody in my class got their paper work they have to do by the end of the week.I got mine too,so i would like you to help me with this :D? I got a paper with instructions: There are 8 students,each with different IQ.Those students recieved 10 medical books,(medical because ...
Tuesday, January 10, 2012 at 5:15am
Human and Social Biology
A calorimeter was used to oxidise completely 2g of a food sample,causing a temperature rise of 5degrees C in 100cm3 of water(this figure includes the water equivalent of the apparatus). How much energy was present in the food sample(in joule per g)?
Sunday, January 8, 2012 at 8:00pm
Which of the following is a function of modern-day psychologists? read tour thoughts study conformity study the future study how the positions of planets influence a person's personality
Thursday, January 5, 2012 at 11:48pm