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October 25, 2014

Homework Help: Science: Biology

Recent Homework Questions About Biology

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Biology
If two different people use the same dichotomous key to identify the same organism, should they have different results? Explain. ( 3 points ) I put: They should have the same results. Since they are using the same key, the results couldn't possibly change. Anything else I ...
Thursday, May 29, 2014 at 6:14pm

biology plz help
Holly knows from talking with Renee that genes control traits and are determined by the sequence of nucleotides. When that sequence of nucleotides is altered for some reason during DNA replication, it can lead to the gene being expressed in a different way or to a genetic ...
Tuesday, May 27, 2014 at 9:44pm

Simple Biology
A majority of scientists worldwide agree with a new theory of evolution proposed by a group of students. The theory will most likely be (2 points) rejected. accepted. non-testable. non-observable. *I think it is B, but I am not sure
Saturday, May 24, 2014 at 9:27pm

biology honors
i am doing a research paper on animal rights what are some specific issues related to the topic and develop a specific research question from your selected contemporary issue. ( i put "animals used as experiments") my thesis is animals should not be used as ...
Saturday, May 24, 2014 at 9:53am

Biology Please help
There are several genes that control eye color; eye color is therefore called a (A) Polygenic trait. Besides genes that directly control eye color, there are other genes that can affect the color of your eyes. For example, your eye color genes may code for green eyes, but if ...
Friday, May 23, 2014 at 11:24pm

biology honors
i am doing a research paper on cancer. what are some specific issues related to the topic and develop a specific research question from your selected contemporary issue. ( i put "the good and bad of cancer"
Friday, May 23, 2014 at 9:27pm

Biology 30
In what size populations might you expect it to be relatively common for alleles to become fixed? Why? I think that larger populations would be more likely to have fixed alleles, since perfect Hardy-Weinberg equilibrium states that there will be no change in allele frequency ...
Friday, May 23, 2014 at 7:50pm

human biology
If type B blood was accidentally given to someone with Type O blood, a defense response called (A)__________ would occur. This is because the type O person has A and B defensive proteins called (B)__________ that would mount a defense against the type B blood, causing clumping.
Thursday, May 22, 2014 at 5:22pm

Biology
14. The layer of skin that contains nerves and blood vessels is the _________ 15. ________ digestion occurs in the small intestine through the action of enzymes. 16. Urea, excess water, and other waste materials are eliminated in a water fluid called ______________. 17. ...
Thursday, May 22, 2014 at 12:06pm

biology
Human immunodeficiency virus (HIV), the virus that causes AIDS, is unique because its main genetic instructions are in the form of RNA instead of DNA. Because of this, it’s called a(n) (A) __________. When a person is infected with HIV, the immune system mounts a normal ...
Thursday, May 22, 2014 at 12:20am

BIOLOGY please help
The first phase of somatic cell division is (A) __________, when the cell’s chromosomes condense, and the nuclear envelope that holds the chromosomes starts to break up. During this time, structures called the (B) __________ form from centrioles, which will attach to the ...
Wednesday, May 21, 2014 at 9:25pm

Biology
During exercise, (B) __________ muscles in the walls of the veins contract and cause the vein walls to stiffen so more blood flows to the heart and lungs.
Wednesday, May 21, 2014 at 3:49am

Biology - Help!!
Can someone check these for me? 1. Excretion is the process of (1 point) exchanging carbon dioxide for oxygen. removing metabolic wastes from the body.*** pumping blood throughout the body to supply nutrients and oxygen to cells. breaking food down into nutrients that can be ...
Tuesday, May 20, 2014 at 11:09pm

biology
What part absorbs light and converts it into nerve impulses What part bends light that enters the eye so that what you see is focused on your retina What part transfers the image the eye sees to the brain for perception
Tuesday, May 20, 2014 at 1:43pm

biology
The hypothalamus secretes a hormone called GnRH that makes the anterior pituitary gland release FSH, referred to as (A)__________ hormone, and LH, or luteinizing hormone. As the levels of these two hormones increase, the oocyte and layer of cells that nourish it grow. As this ...
Tuesday, May 20, 2014 at 2:38am

biology Help
The fertilized egg undergoes cell divisions that form a ball of cells during (A)__________. During (B)__________, the endoderm, ectoderm, and mesoderm form. All the tissues of the adult body will come from these three germ layers. Differentiation is the process where cells are...
Monday, May 19, 2014 at 7:09pm

biology help
The fertilized egg undergoes cell divisions that form a ball of cells during (A)__________. During (B)__________, the endoderm, ectoderm, and mesoderm form. All the tissues of the adult body will come from these three germ layers. Differentiation is the process where cells are...
Monday, May 19, 2014 at 3:16pm

biology help
The cells in the retina that detect color and bright light are called _________ cells.
Monday, May 19, 2014 at 2:35pm

biology
suppose some natral disaster occured and a speices of finch is forced to relocate from its original island where it dined on cactus flowers to an adjacent island with many fewer cacti but an over abundance of orchids what would be the imediate consequences to the speices in ...
Monday, May 19, 2014 at 9:52am

biology help
Frequent urination is associated with alcohol consumption because alcohol suppresses the hormone (A)__________. As a result, urine becomes more (B)__________, and the body loses more water than it should.
Monday, May 19, 2014 at 5:37am

biology
Which type of reproduction is associated with using the most necessary resources (e.g., the most nutrients or most energy)? - binary fission - asexual reproduction - sexual reproduction - budding
Monday, May 19, 2014 at 12:52am

Biology
A strand of DNA contains the following bases. ATT CCG GGA TTT a) what amino acids are coded for? First of all, would the mRNA strand be UAA GGC CCU AAA?
Sunday, May 18, 2014 at 5:56pm

Human Biology please help
components of sense and smell Olfactory receptors in the nose travel directly to the olfactory (A)__________ before arriving at the olfactory cortex in the frontal area of the brain. This part of the brain has a direct link with the amygdala, which is involved with emotion and...
Sunday, May 18, 2014 at 3:37pm

Human Biology please help
Cross section of the brain Located in the forebrain, the (A)__________ is responsible for controlling homeostasis and making adjustments in how the organs work. While the rest of the brain is protected from viruses, bacteria, toxins, and hormones in the blood, this part of the...
Sunday, May 18, 2014 at 3:11pm

Biology
Okay my question has to do with a pedigree shown in an illustration. Since I can't show the illustration I'll do my best to describe it: There's a mother and a father and they have 4 kids: 2 boys, 2 girls. Circles represent females and squares males. A darkened ...
Friday, May 16, 2014 at 10:36pm

Biology
Proteins are manufactured through the "blueprints" found on DNA. After they are translated, they are moved through a system of internal membranes before being distributed throughout the rest of the cell. At some point in the process, they are modified to their ...
Friday, May 16, 2014 at 9:39pm

Biology
In snapdragon plants, neither one of the petal colors is dominant to the other. The hybrids have a intermediate phenotype. If a homozygous red flower is crossed with a homozygous white flower, What will the offspring’s phenotype be?_____________________________ (Use C for...
Friday, May 16, 2014 at 4:50pm

biology
A farmer sprays insecticide on his crops and notices that the insect pest problem disappears. A year later he tries the same insecticide only to find that he did not achieve the same result. The insect population shows resistance to the insecticide. This is an example of ____ ...
Tuesday, May 13, 2014 at 11:31am

biology
which of the following is not a part of the theory of evolution
Tuesday, May 13, 2014 at 7:37am

BiOlogy
Can we predict or show the outcome of monohybrid crosses for parents with different allele combinations?Explain your answer
Monday, May 12, 2014 at 4:05pm

Biology
Hydrolysis uses a catabolic reaction. Explain what a catabolic reaction is and how it is useful in creating monomers from polymers.
Monday, May 12, 2014 at 2:16pm

Biology
Describe how a monomer is the basic unit of all macromolecules.
Monday, May 12, 2014 at 10:53am

Biology help please
1.Many freshwater invertebrates eliminate ammonia by: A. Converting it to uric acid and eliminating it with solid wastes. B. simple diffusion across the gill membranes. C. converting it to urea and eliminating it in their urine. D. simple diffusion across the skin.****** 2. ...
Friday, May 9, 2014 at 1:41pm

Biology help please
1.Many freshwater invertebrates eliminate ammonia by: A. Converting it to uric acid and eliminating it with solid wastes. B. simple diffusion across the gill membranes. C. converting it to urea and eliminating it in their urine. D. simple diffusion across the skin.****** 2. ...
Friday, May 9, 2014 at 7:38am

Biology
9. The restriction endonuclease AluI leaves blunt ends on DNA fragments after digestion. These blunt ends a) form hydrogen bonds with the blunt ends of other fragments produced by AluI b) are fully base paired c) have only one unpaired base d) always include the base adenine e...
Thursday, May 8, 2014 at 11:45pm

Biology PleaSE help!
Hello, this is my biology assignment. I filled the answer's but I just need your help to correct me if I'm wrong Thank you. 1) The discovery of restriction endonucleases was crucial to the development of recombinant DNA technology because these enzymes. a) always cut ...
Thursday, May 8, 2014 at 11:25pm

Biology
5. Dideoxynucleosides are employed in the course of the Sanger process of DNA sequencing. Dideocynucleosides are used because a) They stop the synthesis of DNA strands b) They are fluoresce c) They are radioactive d) They move quicly during gel electrophoresis e) They ...
Thursday, May 8, 2014 at 11:23pm

Biology help please
1.Many freshwater invertebrates eliminate ammonia by: A. Converting it to uric acid and eliminating it with solid wastes. B. simple diffusion across the gill membranes. C. converting it to urea and eliminating it in their urine. D. simple diffusion across the skin.****** 2. ...
Thursday, May 8, 2014 at 11:07pm

Biology
Could anyone explain shade avoidance in auxin in plants?
Thursday, May 8, 2014 at 11:06pm

Biology
Hello, this is my biology assignment. I filled the answer's but I just need your help to correct me if I'm wrong Thank you. 1) The discovery of restriction endonucleases was crucial to the development of recombinant DNA technology because these enzymes. a) always cut ...
Thursday, May 8, 2014 at 10:41pm

Biology
Examining an animal showing juvenile somatic characteristics and sexual maturity, how can you tell if this is the result of progenesisor neoteny?
Thursday, May 8, 2014 at 12:16am

English
Identify the sentence that is correctly punctuated. A. Clara did not study very much for her biology test, therefore, she guessed at many of the answers. B. Clara did not study very much for her biology test; therefore she guessed at many of the answers. C. Clara did not study...
Tuesday, May 6, 2014 at 5:42pm

English
Identify the sentence that is correctly punctuated. A. Clara did not study very much for her biology test, therefore, she guessed at many of the answers. B. Clara did not study very much for her biology test; therefore she guessed at many of the answers. C. Clara did not study...
Monday, May 5, 2014 at 9:38pm

English
Identify the sentence that is correctly punctuated. A. Clara did not study very much for her biology test, therefore, she guessed at many of the answers. B. Clara did not study very much for her biology test; therefore she guessed at many of the answers. C. Clara did not study...
Monday, May 5, 2014 at 8:20pm

biology
Which candy required more base per gram of candy sweet tarts or smarties
Monday, May 5, 2014 at 8:12pm

Biology
Does the adrenal gland have any role in DIRECTLY DETECTING a change in the blood glucose level? Or is only the pancreas involved?
Thursday, May 1, 2014 at 6:43pm

BIOLOGY
when chlorophyll runs out of electrons where does it find new ones? The light dependent reactions use energy from sunlight to produce what 3 things?
Wednesday, April 30, 2014 at 9:59pm

Biology help
what is the name of the process that happens in the matrix of the mitochondrion? What is the name of the process that happens last in cellular respiration and takes place on the inner membrane?
Wednesday, April 30, 2014 at 9:48pm

biology
what are three ways that DNA mutation can alter genetic material?
Wednesday, April 30, 2014 at 7:54pm

Biology
What are the differences between proteins produced in free ribosomes versus proteins produced in the rough endoplasmic reticulum?
Monday, April 28, 2014 at 11:20pm

Biology
Hormones are _____? a) produced only in response to environmental stress b) are all under the control of the pituitary gland c) signals that must interact with DNA in order to be effective d) always proteins I feel like it is b) because hormone receptors are always proteins, ...
Monday, April 28, 2014 at 7:39pm

Biology
Hormones are _____? a) produced only in response to environmental stress b) are all under the control of the pituitary gland c) signals that must interact with DNA in order to be effective d) always proteins I feel like it is b) because hormone receptors are always proteins, ...
Monday, April 28, 2014 at 6:49pm

biology
Describe the resources found in the Amazon rain forest—why is the rain forest so important?
Monday, April 28, 2014 at 1:10pm

biology
What is a description of the Amazon rain forest—definition of rain forest; characteristics ; location and size of the Amazon rain forest
Monday, April 28, 2014 at 1:08pm

biology
What are some factors that might slow destruction of the rain forest?
Monday, April 28, 2014 at 1:07pm

biology
What are some of the costs of the destruction of the rain forest?
Monday, April 28, 2014 at 1:06pm

Biology
Describe how a monomer is the basic unit of all macromolecules.
Monday, April 28, 2014 at 11:31am

Biology
List four fuctions of the skin
Monday, April 28, 2014 at 10:46am

Biology
The gene encoding for body color in zombie flies is "X-linked". Gray bodies are the wild-type trait and blue bodies are caused by a mutation - Set up a cross between a male with a blue body and a female who is homozygous dominant for a gray body. Indicate the geno ...
Sunday, April 27, 2014 at 6:37pm

Biology
Punnett Square Help 1) Set up a Di-hybrid cross for these two traits (pod color and shape) Note:Green pods are dominate over yellow pods and inflated pods are dominant over constricted pods -Start off with both parents as heterozygotes/hybrids for BOTH genes and assume the ...
Sunday, April 27, 2014 at 6:33pm

science: biology
The hyena is a carnivore. Justin claims that hyenas need plants to survive, but Kaden says that they don't because they only eat meat. Who is correct and why?
Sunday, April 27, 2014 at 9:27am

biology
In what part of the cell does translation occur?
Thursday, April 24, 2014 at 6:08pm

Biology 10B
According to the pressure-flow hypothesis, which of the following statements is not true • Water moves from the xylem to the phloem of a plant. • Water is necessary for sugars to move through phloem. • Phloem is able to move sugars in either direction to meet ...
Thursday, April 24, 2014 at 5:31pm

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

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