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November 24, 2014

Homework Help: Science: Biology

Recent Homework Questions About Biology

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biology
how can i construct a dichotomous key that can be used to identify the following: mango leaf, tridax procumbent leaf, cassia leaf, grass leaf, and cassava leaf.
Thursday, April 24, 2014 at 2:17pm

Biology help
How does a gene determine a trait?
Wednesday, April 23, 2014 at 9:29pm

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?
Wednesday, April 23, 2014 at 3:56pm

BIOLOGY
If a PCR product is 659 bp, how many D1S80 repeats are present in that DNA molecule?
Tuesday, April 22, 2014 at 9:31pm

biology
The two main structures that make up a kidney are the A. hilus and cortex B. cortex and medulla c. renal pelvis and medulla
Tuesday, April 22, 2014 at 9:30pm

BIOLOGY
undigested food enters the intestine called the ? chyme is this answers right ? PLEASE HELP ME
Monday, April 21, 2014 at 6:37am

Biology
undigested food enters the intestine called the ? chyme is this answers right
Monday, April 21, 2014 at 12:23am

Maths, biology, accounting, business economics
What career could one study with these subjects
Sunday, April 20, 2014 at 9:03am

biology 6
the giant anteater of south america, the giant armadillo of north america, the giant pangolin of Africa and the spiny anteater of Oceania share many characteristics. They all eat ants, have long narrow snouts, few teeth and large salivary gland, yet they do not share a common ...
Thursday, April 17, 2014 at 3:49pm

biology 5
which of the following is correct? A. mitosis results in 4 identical daughter cells B. meiosis is used for the production of gametes C. cells go through two series of divisions in mitosis D. daughter cells produced by meiosis contain the same number of chromosomes as the ...
Thursday, April 17, 2014 at 3:42pm

biology 4
one strand of DNA could be as long as a football field if it were stretched out lengthwise. One of the factors allowing DNA to fit inside the nucleus of a cell is its ability to: A. break apart into separate genes B. extend to form very long, thick molecules C. coil tightly ...
Thursday, April 17, 2014 at 3:39pm

biology 3
the curled ears of the american curl cat are caused by an autosomal dominant allele. What are the chances of a heterozygous female and a homozygous recessive male producing offspring with curled ears?
Thursday, April 17, 2014 at 3:34pm

biology 2
which organelle produces proteins? A. nucleus B. lysosome C. ribosome D. Golgi body
Thursday, April 17, 2014 at 3:31pm

biology
Intravenous saline injections are often given as a treatment for severe dehydration. the concentration of saline (0.9% NaCI) in these injections is that same as that present in human cells. what would happen if pure water was introduced into the the body instead of saline?
Thursday, April 17, 2014 at 3:29pm

BIOLOGY 12
Explain the path of deoxygenated blood from the right atrium to the lungs
Wednesday, April 16, 2014 at 9:13pm

Biology
Hydrolysis uses a catabolic reaction. Explain what a catabolic reaction is and how it is useful in creating monomers from polymers.
Wednesday, April 16, 2014 at 12:31pm

Biology
Briefly describe how the process of dehydration synthesis creates polymers.
Wednesday, April 16, 2014 at 12:30pm

Biology Help
Describe how a monomer is the basic unit of all macromolecules. Thank you! :)
Wednesday, April 16, 2014 at 12:30pm

biology
I have to do a lab report on the effect of metal ions on enzyme activity One of the questions asked the sources of error and one asked the methods used I got stuck, can you pls help
Wednesday, April 16, 2014 at 11:39am

Language Arts - Grammar - please check answers
Identify the linking verb and the predicate nominative. 1. My partner for biology lab is Penelope. 2. Jason will be the next student council president. 3. Mrs. Furillo's favorite song is still "Night and Day." 4. Rocky Marciano was the world heavyweight boxing ...
Tuesday, April 15, 2014 at 10:26pm

BIOLOGY
What is an example of a human genetic problem?
Tuesday, April 15, 2014 at 10:14pm

HELP!
Next year (sophomore year) I'm taking the following courses: Honors Algebra II/Trig Spanish III Health AP Biology Honors English AP World History Is AP Bio and world history hard? or no it's not just the exam. Please tell me because this is my first year taking AP.
Monday, April 14, 2014 at 8:00pm

AP Biology
Why are Eukaryotes more difficult to Transform than Prokaryotes? What methods can be used to transform Eukaryotes?
Monday, April 14, 2014 at 7:20pm

AP Biology
What is the purpose of using a plasmid containing an antibiotic resistance gene in the transformation process?
Monday, April 14, 2014 at 7:17pm

Biology
How many calories are required to heat 10 ml of water from 25 degrees Celsius to 35 degrees Celsius?
Sunday, April 13, 2014 at 11:19pm

Biology help please
In a cladogram, which organism would exhibit the most unique characteristics: the ancient ancestor or the most recently evolved species? I think it is ancient ancestor...?
Sunday, April 13, 2014 at 8:49pm

Biology
Hi, I have several questions that I am not sure or do not know their answers. Lecturer gave the key words but I think there are some questions that do not have any answer among those key words. Please tell me whether the answer are correct or not. And tell If you have better ...
Sunday, April 13, 2014 at 10:54am

Biology
Im stumped... These answers I cannot find, please and thank you :) 1) In males, the primary target of FSH is the ______. 2)Testosterone and other androgens are secreted by the______. 3)During meiosis, when synapsis occurs, corresponding maternal and paternal chromosomes come ...
Saturday, April 12, 2014 at 2:59pm

biology
Red is dominate over blue, give the genotype for an individual who is heterozygous red, homozygous red, and blue.
Friday, April 11, 2014 at 9:20pm

Biology
ystic fibrosis is caused by mutations in the CFTR gene, which encodes for a chloride channel. You are studying cystic fibrosis patients to determine what mutation they possess in the CFTR gene. The difference between the mutant and wild type CFTR can be uncovered by examining ...
Thursday, April 10, 2014 at 3:46am

English 9R - Civil Disobedience Essay Check (PLZ!)
Please check my essay for any grammar errors and anything, because my English teacher grades HARD and I really want a 100 on this essay. I spend HOURS writing this and I really appreciate if you check. Thank You! :) here it is: Civil disobedience is "refusal to obey laws ...
Wednesday, April 9, 2014 at 6:38pm

What is a biology lab practical?
Is it a test on paper or can I look at notes and answer questions? Do I have to dissect something, have the TA ask me a question and answer instead of dissecting as a group? I've just been quizzing myself on parts of the animal in case we can't use notes, but I don'...
Tuesday, April 8, 2014 at 9:48pm

Biology
If a gas contains 25 ml of oxygen at 37oC and a pressure of 700 mm Hg, what is the volume under STP.
Tuesday, April 8, 2014 at 7:49pm

BIOLOGY
how would i find the osmotic pressure of something from "0.9% NaCl solution and MW is 58 grams" .. ? is there a formula or some sort i am missing? if so can you tell me what that is cause i have several problems like these that i don't know how to solve
Tuesday, April 8, 2014 at 4:00pm

ap biology
What barriers might hinder the acquisition of plasmids?
Tuesday, April 8, 2014 at 1:05pm

Biology
how would i find the osmotic pressure of something from "0.9% NaCl solution and MW is 58 grams" .. ? is there a formula or some sort i am missing? if so can you tell me what that is cause i have several problems like these that i don't know how to solve
Tuesday, April 8, 2014 at 12:41pm

Biology
Compare and contrast two classes of genes involved in regulating the cell cycle
Tuesday, April 8, 2014 at 11:31am

Biology
Can someone please tell me if I have the right answers? Pasteur's experiments led to which theory? A. biogenesis theory B. endosymbiont theory C. evolution theory D. spontaneous generation theory I think its A or D Scientists have fossil evidence for which idea for the ...
Monday, April 7, 2014 at 9:28pm

Biology
How do endotherms and ectotherms differ? a) Endotherms are warm-blooded and ectotherms are cold-blooded. b) Endotherms and ectotherms differ in the means by which they regulate their body temperature. c) Endotherms are regulators and ectotherms are conformers.
Monday, April 7, 2014 at 11:44am

Biology
Select the correct statement describing feedback control in animals. Select the correct statement describing feedback control in animals. a) All ectotherms are conformers with respect to temperature. b) An animal may be a regulator for one environmental variable but a ...
Monday, April 7, 2014 at 11:43am

Maths, Biology, Business Economics
Hi I want to study Psychotherapy and be a Dance therapist but cannot find any courses for Dance Therapy in South Africa.
Monday, April 7, 2014 at 8:56am

Biology please help
I have a project due tomorrow and i cant find a good place to start. Cardiacmuscle disease is a disease that is a result of the cytoskeleton not functioning properly. I cant find anything on cardiac muscle disease. THIS IS NOT CARDIOMYOPATHY
Sunday, April 6, 2014 at 9:43pm

Biology
Can someone please tell me if I have the right answers? Pasteur's experiments led to which theory? A. biogenesis theory B. endosymbiont theory C. evolution theory D. spontaneous generation theory I think its A or D Scientists have fossil evidence for which idea for the ...
Sunday, April 6, 2014 at 9:06pm

biology
In cat, the gene for black coat is dominant to the gene for white coat. A heterozygous black cat is crossed with a white cat. which of the following is true about the ratio of the offspring from the cross? black coat white coat A 1 3 B 3 1 C 4 1 D 4 0 can you please give me an...
Sunday, April 6, 2014 at 9:52am

mathematics
If Musa scored 75 in Biology instead of 57, his average mark in four subjects would have been 60. what was his total mark?
Saturday, April 5, 2014 at 2:30am

Science/Biology
Please check my answers: 1. Which of the following correctly states the relationship between monkeys and humans? A. Humans and monkeys evolved from apes. B. Humans evolved from monkeys. C. Humans and monkeys evolved from the same ancestor, which is now extinct. D. Humans ...
Friday, April 4, 2014 at 4:40pm

Biology
What are the three types of dispersion?
Thursday, April 3, 2014 at 5:12pm

Biology
Which is the highest? Ecosystem population community
Thursday, April 3, 2014 at 9:41am

biology
Give the phenotype and genotype for the F2 generation of a person with Type a heterozygous blood and a type O blood type. Remember to use all possible parents. Using Punnett squares I got 50% type a blood and 50% type o blood is this right??
Wednesday, April 2, 2014 at 1:03pm

biology
Sperm cells are moved out of the testes in the
Tuesday, April 1, 2014 at 12:50pm

Biology
The purines in DNA are A.thymine and cytosine B.thymine and guanine C.adenine and guanine D.adenine and cytosine
Tuesday, April 1, 2014 at 10:12am

biology
On a hot, summer day, what would most likely be the limiting factor, the light reaction, or the dark reaction (in terms of photosynthesis)? I don't necessarily need the question answered. Rather, I don't quite understand how limiting factors, light and dark reactions ...
Tuesday, April 1, 2014 at 1:27am

Biology
I know it is a bit long and maybe difficult, please help me to answer these.. 1) I have pET28a with insert inside. Insert is 400 bp in size. I want to check my insert with both single digestion and double digestion. I already isolated my plasmid but i do not know the next ...
Monday, March 31, 2014 at 5:11pm

Physics
It's called Mike's Online Biology: MOB University. Click physics Tutoring tab -> chapter 9 -> scroll down to question #13 with video below it. I used it as a guide.
Sunday, March 30, 2014 at 10:55pm

Biology (fetal pig)
What substance passes through the glottis? [Is it Air??] What substances passes through the esophagus? [I don't know if this is food] please help. thanks
Friday, March 28, 2014 at 10:11pm

Science
Describe how the structure of DNA is correlated with its role as the molecular basis of inheritance in Biology.
Friday, March 28, 2014 at 12:32pm

Biology
Why does an increase in light intensity cause the rate of photosynthesis to increase?
Wednesday, March 26, 2014 at 2:46pm

biology - genetics
is the cis-regulatory sequence found in the exome?
Wednesday, March 26, 2014 at 2:01am

biology - genetics
how do you compare the reversibility of point mutations and microsatellites? I thought point mutations could reverse but microsatellites can't but idk the reason.
Tuesday, March 25, 2014 at 2:28pm

Biology
How does diving bradycardia reflex help explain why we can survive after falling into cold water and being submerged for long periods of time? Give a physiological reason that explains the relationship between lung size and body size. From a physiological perspective, why is ...
Monday, March 24, 2014 at 11:17am

Biology
The integumentary system includes • skin only** • hair only • nails only • skin, hair, and nails Is my answer correct? the **
Saturday, March 22, 2014 at 11:09pm

Biology
Read the DNA sequence given below in the 3' to 5' direction and please tell me all of the potential start codons (i.e. every time you see the DNA version of a start codon, even if it does not immediately come after a promoter). 3'-TTCCGTAACTTCGGCGCATCTAGCTTGAGCTCC...
Saturday, March 22, 2014 at 9:47pm

Biology
What 3' to 5' DNA sequence would correspond to a 5'-AUG-3' start codon?
Saturday, March 22, 2014 at 9:18pm

Biology
(This question ties into the previous question I posted about mRNA). Use the Universal triplet code to determine the sequence of amino acids that would be generated for each of the mRNA sequences that you generated in question 2. Remember that the reading of mRNA goes in the 5...
Saturday, March 22, 2014 at 9:17pm

Biology
Does it matter which strand is the 'code strand'? The following two sequences look identical, except one runs 3'-5' and the other 5'-3'. For each DNA sequence given below, write the mRNA sequence that would be coded from it. Make sure you indicate the ...
Saturday, March 22, 2014 at 9:05pm

Biology
For the DNA sequence given below, write the complementary DNA sequence that would compliment the double-strand DNA 3'--ATTGCTTACTTGCATGGTACCTCTAGCGTTTA​GGC--5'
Saturday, March 22, 2014 at 9:02pm

BIOLOGY
Which of the following statements is NOT true about gamete formation in mammals? a)In the female, the separation of cytoplasm is unequal during meiosis. b)Only one of the four cells resulting from meiosis goes on to become an oocyte. c)Only one of the four cells resulting ...
Saturday, March 22, 2014 at 2:04pm

human biology cardiology
A flow of blood directly from the right atrium to left atrium is a dangerous complication of certain heart abnormalities. It can lead to cyanosis. What do you know about the flow of blood through the heart and lungs that would explain this? Yes, I do know what cyanosis means. ...
Saturday, March 22, 2014 at 1:15pm

biology
I need help with what is happening inside the mitochondria. may help me what's happening 0-50 secondes. h t t p: // w w w.y o u t u b e.c o m / watch ?v=RrS2uROUjK4
Friday, March 21, 2014 at 8:35pm

Biology
Exogenous treatment with the plant hormone, ABA or auxin, induces enhanced susceptibility against biotrophic pathogens. Design an experiment that can reveal whether these hormones use the same signalling pathway or independent pathways to induce susceptibility.
Friday, March 21, 2014 at 2:46pm

Biology
oil spills and leaks in the pacific ocean have harmed marine organisms and the environment. which kind of environmental issue is illustrated by this example? a) Resource Use b) Pollution c) Population Growth d) Biodiversity
Friday, March 21, 2014 at 2:46pm

Biology
How do the kidneys clean the blood? (1 point) • Kidneys clean the blood by breaking down nutrients. • Kidneys clean the blood by filtering it to remove wastes. • Kidneys clean the blood by absorbing nutrients. • Kidneys clean the blood by destroying ...
Thursday, March 20, 2014 at 3:51pm

Biology- Please Check
Crossing over (genetic recombination) and independent assortment result in A.) genetic variation in the gametes B.) four identical gametes C.) two diploid cells D.) a very large number of mutations
Thursday, March 20, 2014 at 2:52pm

Biology- Please Help
Crossing over (genetic recombination) and independent assortment result in A.) genetic variation in the gametes B.) four identical gametes C.) two diploid cells D.) a very large number of mutations
Thursday, March 20, 2014 at 12:49pm

biology
Can you give me a long list of smelly animals
Thursday, March 20, 2014 at 12:54am

College Math
In a group of 200 high school students, 36 are taking biology, 52 are taking Spanish, and 126 are taking neither biology nor Spanish. If one of these 200 students is to be chosen at random, what is the probability that the student chosen is taking biology but not Spanish?
Wednesday, March 19, 2014 at 2:49pm

biology
What graphic could you use to best show the checkpoints in the cell cycle? a. line graph b. bar graph c. flowchart d. map I'm not sure, I think it's c?
Wednesday, March 19, 2014 at 2:16pm

biology
In chickens, males have two Z sex chromosomes (ZZ) and females have one Z and one W sex chromosome (ZW). The mechanism for inheritance of the sex chromosomes is exactly the same as for X and Y sex chromosomes in other species. In chickens the character of ‘barred’ or...
Wednesday, March 19, 2014 at 10:14am

Biology
A poultry farmer hopes to profit from the current craze for keeping egg laying chickens as pets and wishes to increase his stock of interesting and unusual breeds. (a) The farmer crossed a pure-breeding white chicken with a pure-breeding black chicken and found that 100% of ...
Wednesday, March 19, 2014 at 10:09am

Biology
Briefly describe a portal system and give the location of two portal systems in the human body.
Tuesday, March 18, 2014 at 7:55pm

Biology
My AP Biology class is exploring alpha amylase production in germinating barley seeds. There are three treatments the seeds, or more specifically the half-grains, are put in. 1) half grains with no embryo and no GA 2) half grains with an embryo present 3) half grains with no ...
Monday, March 17, 2014 at 11:26am

Biology help please!
What is your opinion of the balance of nature hypothesis? Would the deer on the island be better off, worse off, or about the same without the wolves. Defend your position.
Sunday, March 16, 2014 at 3:36pm

Biology
When a teapot boils, we see a white cloud rising from the spout. The white cloud is composed of: A. water in the liquid phase B. water in the gaseous phase c. water molecules coming apart to from H+ and OH- ions D. H+ and OH- ions coming together to form water molecules. Explain!
Sunday, March 16, 2014 at 1:32pm

Biology
What is a mutation? How does this change the information in a DNA molecule?
Sunday, March 16, 2014 at 1:31pm

Absorption spectra of pigments
On the graph light absorption in % vs wavelength, how come the color of chlorophyll is green? Since this is an absorption spectra, isn't it supposed to absorb blue and red and not green? Rather, it reflects green??? How would the graph be different if it is a reflection ...
Friday, March 14, 2014 at 3:00pm

AP Biology
The one-pod condition (P) is dominant to the three pod condition (p). Normal leaf (L) is dominant to wrinkled leaf(l). Determine the genotypes for the two parents for all possible matings producing the following: 150 one pod normal, 147 one pod wrinkled, 51 three pod normal, ...
Friday, March 14, 2014 at 1:58pm

Biology
What is the basic unit of information in a DNA molecule? In an RNA molecule? In a polypeptide?
Friday, March 14, 2014 at 12:47pm

biology please help
whiich of these fit together A. lipase B. nuclease C. pancreatic amylase D. pepsin bread crumb stuffing butter mashed potatoes turkey
Thursday, March 13, 2014 at 3:39pm

Biology
Are my answers correct? 1. What term describes the relationship of the ankle to the hip? Medial Proximal Distal this one Superior Anterior 2. What term describes the relationship of the nose to the mouth? Superior- this one Deep Anterior Inferior Superficial
Wednesday, March 12, 2014 at 11:23pm

STATISTIC HELP
1.M&M candies are great for probability. The following tables are the color distributions for the candies. Fill in each table with the missing probability and answer the questions that follow. Plain Brown Blue Green Orange Red Yellow Probability 0.3 0.1 0.1 0.1 0.02 ??? ...
Wednesday, March 12, 2014 at 1:08pm

human biology please help
The Golgi body receives proteins from the (A) __________, "packages" those proteins and "ships" them to other areas of the cell, or to the (B) ________ for secretion.
Tuesday, March 11, 2014 at 9:48pm

biology PLEASE HELP
The __________ (the cell’s outer border) controls the movement of materials into and out of the cell. It is called a lipid bilayer because of the type of molecules it is made up of and it has two layers
Tuesday, March 11, 2014 at 9:12pm

human biology need help
The Golgi body receives proteins from the (A) __________, "packages" those proteins and "ships" them to other areas of the cell, or to the (B) ________ for secretion.
Tuesday, March 11, 2014 at 8:15pm

Human biology please help
Sequences of chemical reactions, called metabolic pathways, can be sped up, or catalyzed, by (A) __________ , which are made mostly of (B) ___________.
Tuesday, March 11, 2014 at 7:58pm

biology
I'm doing a lab report for a cellular respiration experiment. My experiment involves blowing/exhaling CO2 into Bromothymol blue solution until it turns yellow, then adding drops of Nh3 (ammonia) to turn it back to its original blue color. I'm seeing if the amount of ...
Tuesday, March 11, 2014 at 5:49pm

Statistic Please Check
Check this out please Thanks Lesson 3 Unit 2 Probability Couplements, Disjoint Events and the addition Rule 1.M&M candies are great for probability. The following tables are the color distributions for the candies. Fill in each table with the missing probability and answer the...
Tuesday, March 11, 2014 at 11:44am

Please Help Me :( Science: Biology, Genetics!
Please help me with science genetics questions? Thanks to all who answer!! :) 1. Chromosome pairs contain different versions of genes, which are called ________. 2. The process in which body cells are duplicated in order to grow and repair body tissues is called _____________...
Monday, March 10, 2014 at 5:22pm

Biology
There are several questions about plasmid isolation experiment Please help me answer them img493.yukle.tc/image.php?id=5940Adsiz.j​pg
Monday, March 10, 2014 at 9:35am

Biology
Sort the terms and phrases as to whether they function in or describe primary growth or secondary growth? Place each term or phrase to the appropriate bin. If the term or phrase describes both primary and secondary growth, place it to the "both" bin. If the term or ...
Sunday, March 9, 2014 at 9:04pm

biology
mention some tests for enzyme?
Friday, March 7, 2014 at 9:44am

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