Recent Homework Questions About Biology
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
The first step in making a protein is transcription of a gene. This occurs in the 1._______of a eukaryotic cell. An enzyme called 2.______ carrres out the process of transcribing RNA from the DNA. It starts at a specific nucleotide sequence called a 3.______ next to the gene. ...
Wednesday, January 4, 2012 at 5:46pm
what would b possible sources of errors for a potato experiment involving osmosis with potato going into salt solutions ( 50% and 25%) and also potato going into 100% distilled water?
Monday, January 2, 2012 at 2:03am
Cells absorbing sugar or other small molecules from their surroundings is an example of A. diffusion B.osmosis C. exocytosis D.endocytosis I think it is either C or D because they both have to do with the transportation of molecules in and out of cells.
Friday, December 30, 2011 at 12:43pm
I'm doing my science fair project on like how healthy and junk food affect the human body. I check on the site (Rockland Sit Fair) and reading the Project Categories. Does these project categories below relates to my project??? Medicine and Health: Study of diseases and ...
Thursday, December 29, 2011 at 5:42pm
Please help me!!! BIOLOGY
1. Explain how natural selection and sexual selection can work together to cause the evolution of large antlers on male moose. 2. Suggest two ways a synthetic biologist can change the course of evolution.
Wednesday, December 28, 2011 at 11:01pm
evolutionary machanism - BIOLOGY
A flock of migrating birds is blown off course by a storm and carried towards a small island that has no birds. Only three of the birds survive the storm and make it to the island. They start to reproduce and, after several years there are 500 birds on the island. Does the ...
Wednesday, December 28, 2011 at 10:02pm
Biology - Evolution
In one sentence each, describe a) one positive effect of direct artificial selection b) one negative effect of direct artificial selection c) one negative effect of indirect artificial selection
Wednesday, December 28, 2011 at 3:23pm
how do animals that live in different enviroments meet their need for efficent gas exhcange? I was thinking maybe through their respiratory system? Body surface, lungs , gills, any specialized organs ? Or though the environment they live in ?
Wednesday, December 21, 2011 at 11:31pm
WHAT DO YOU MEAN BY A "SUITABLE CONTROL" IN AN EXPERIMENT? WHAT WOULD BE THE "SUITABLE CONTROL" IN AN EXPERIMENT TO INVESTIGATE THE EFFECTS OF DIFFERENT LIGHT INTENSITIES ON RATE OF PHOTOSYNTHESIS?
Sunday, December 18, 2011 at 9:27am
A dominant gene V in humans causes certain areas of the skin to become depigmented, a condition called "vitiligo." Albinism is the complete lack of pigment production and is produced by the recessive genotype aa. The albino locus is epistatic to the vitiligo locus. ...
Monday, December 12, 2011 at 1:28pm
Using RNA a s a template for prot e in synthesis instead of t r ans l a t ing prot e ins directly from the DNA is advantageous for the cell because A) RNA is much more stable than DNA. B) RNA acts as an expendable copy of the genetic material, allowing the DNA to serve as a ...
Sunday, December 11, 2011 at 10:12pm
When elongated, tube-shaped cells from the lining of the intestine are treated with a certain chemical, the cells sag and become round blobs. The internal structures disrupted by this chemical are probably _____. A. cell junctions B. microtubules C. rough endoplasmic reticulum...
Sunday, December 11, 2011 at 9:45pm
Which one of the following organelles would be especially abundant in the pancreatic cells that produce digestive enzymes? A. rough endoplasmic reticulum B. smooth endoplasmic reticulum C. lysosomes D. microfilaments E. mitochondria Apparently the answer is not lysosomes, so ...
Sunday, December 11, 2011 at 9:23pm
Using the codon table, determine the sequence of the protein that will be produced from the mRNA sequence below. Be sure to begin with a start codon. 5'-CCCAAUGUUGCGGCCAUGACAC-3' A. N-Methionine-Leucine-Arginine-Proline-C B. N-Methionine-Histidine-Serine-Threonine-...
Saturday, December 10, 2011 at 5:12pm
On my homework there's a diagram of a flying bird with the allele of aa and then there's an arrow pointing to the land with 3 birds on the ground with the alleles AA. What would the allele frequency of A change from? A)1 to .75 B)0 to .25 C)0 to .75 D)1 to .25
Saturday, December 10, 2011 at 3:42pm
I'm pretty sure the answer is A, am I correct? Natural selection tends to A) increase the frequency of characteristics that enhance survival and reproduction. B) decrease the number of individuals in any given population. C) lead to an increase in genetic drift. D) ...
Wednesday, December 7, 2011 at 4:26pm
which of the following DNA sequences would likely be the most stable? (only one strand of the helix is shown) A) CCGAGGCCT B) CGTATAGGG C) CCCGGGGCC D) CTAAGCTTT E) ATATATATA I know the answer is c but why is that true?
Tuesday, December 6, 2011 at 10:01pm
4)You count your cells and have 8x10ᶺ5 viable cells/ml you want to see (dilute the cells) to end up with 2x10ᶺ5 viable cells/ml. What volume of cells will you put into 20 ml?
Tuesday, December 6, 2011 at 8:01pm
1.The four rows of data below show the boiling points for a solution with no solute, sucrose (C12H22O11), sodium chloride (NaCl), and calcium chloride (CaCl2) (not in that order). Which boiling point corresponds to calcium chloride?
Tuesday, December 6, 2011 at 8:01pm
can anyone tell me a little about MacArthur and Wilson's theory of island biogeography? I need to answer the question Describe a series of small habitats that exist within 10 to 20 kilometers of your house and which might be subject to MacArthur and Wilson's theory of ...
Tuesday, December 6, 2011 at 4:48pm
Aristotle's system of classification, which 2 animals would be grouped together? A, seagulls and lizards B.seals and bats c. snails and butterflies d. whales and fish thanks
Tuesday, December 6, 2011 at 4:11pm
please help me on true or false, i put false, according to natural selection, individual organisms can evolve new phenotpes in response to their environments.
Tuesday, December 6, 2011 at 10:05am
6) If the DNA sequence is GTAC, what will be the mRNA sequence? a) CATG b) CTUT c) CAUG d) UCGG 7) Given the codon UGC, what will be its anticodon? a) ACG b) TCG c) TGC d) AAT
Tuesday, December 6, 2011 at 5:11am
a) What type of bond is involved in complementary base pairing? -------------------------------------------------------- b) On what site of the large ribosomal subunit does the second tRNA attach during translation? ----------------------------------------...
Tuesday, December 6, 2011 at 5:07am