Friday
May 6, 2016

Homework Help: Science: Biology

Recent Homework Questions About Biology

Psychology
13.Within the cerebral cortex, the _______ area is found in the occipital lobe. A. visual B. association C. somatosensory D. main auditory 14.Dr. Lombard's research is focused on the capacity of the human mind to store and retrieve information. Her colleague, Dr. Fry, is a...
Wednesday, May 4, 2016 by Emma

Biology
Which of the following animals are considered hominiods? Select all that apply. gibbons Old World Monkey orangutans tarsiers
Tuesday, May 3, 2016 by Lala

Biology
What percentage of animals on earth are vertibrates? 5% 25% 50% 95%
Tuesday, May 3, 2016 by Lala

Biology Help Please!
1) A transcriptional fusion of regulatory sequences of a particular gene with a reporter gene results in relatively uniform expression of the reporter gene in all cells of an organism, whereas a translational fusion with the same gene shows reporter gene expression only in the...
Monday, May 2, 2016 by Tenshi

Biology
8. Presenting with symptoms of recurrent infections, weakness, and frequency of urination over a 6 month period, a 34-year-old man is found to have a blood glucose level of 142 mg/dl and an elevated hemoglobin A1c level. His most likely diagnosis is: A. Type 2 diabetes B. Type...
Sunday, May 1, 2016 by AMG,RN,BSN

Biology
Do you expect that somatic cell gene therapy and germ-line gene therapy for the same disease will be equally difficult?
Thursday, April 28, 2016 by Aaron

Biology
5 reasons for conserving natural resources
Thursday, April 28, 2016 by Ogochukwu

Biology 9th grade
I am stuck on a question on The Integumentary System, the question is Water molecules in the blood pass through the walls of the (blank) into the sweat glands. I am not sure, can someone help me, thanks.
Thursday, April 28, 2016 by Sofia

Biology; PLEASE I NEED THIS ANSWERED QUICKLY!
1. Fill in the five levels of human body organization. ~~~ Not sure what it's asking for me to do. Is it asking for me to name the most important body systems? Because in that case EVERY SINGLE ONE comes to mind. Just need a simple explanation and I'll be on my way. ...
Tuesday, April 26, 2016 by Astral Tellurian

Biology
1. Fill in the five levels of human body organization.   AND 2. Place the five examples below in order from largest to smallest:   You, Stomach, Epithelial Tissue, Digestive System, Parietal cells. ~~~~~~~ I don't know the first one but I think that the...
Tuesday, April 26, 2016 by Astral Tellurian

Science
1. Which of the following could be an engineering project that could better protect the planet? -finding a new landfill site -designing a better trash compacter -deciding which product can be recycled*** -growing microbes that eat oil 2. Engineers who are working to find ...
Monday, April 25, 2016 by Julia

Science
I am doing an extension to get into the AP Biology course offered by my school. This particular extension asked me to use vinegar and baking soda aswell as some basic scientific tools to find the concentration of acetic acid in vinegar. I wanted to know what a procedure for ...
Sunday, April 24, 2016 by Connor

Biology Help Please!
)Describe the importance of chromatin remodeling process to transcription. Select the four correct answers. a) These alterations can be used to activate transcription of a gene by hiding its enhancer sequences. b) These alterations can be used to activate transcription of a ...
Sunday, April 24, 2016 by Kimberly

Science/ Biology/ patho
3. A 32-year-old man comes to his physician complaining of frequency, dysuria, and urgency for several days, as well as pain in the perineal region. The digital rectal examination is extremely painful. He most likely has A. A primary chancre of syphilis in his genital organs B...
Thursday, April 21, 2016 by AMG,RN,BSN

Science/Biology/Anatomy/Patho
10. Functions of the nephron include all of the following except A. Reabsorption of urea nitrogen B. Fluid homeostasis C.Maintaining electrolyte balance D.Regulation of blood pressure E. Maintaining blood pH I think A but really stuck between A & B
Thursday, April 21, 2016 by AMG,RN,BSN

Biology
Compared to atoms of the same element, isotopes have different A. numbers of neutrons. B. numbers of protons. (C. types of subatomic particles.) D. numbers of electrons.
Monday, April 18, 2016 by Garrett

Biology
Ovulation occurs by a surge in the secretion of what hormone? estrogen hormone luteinizing hormone follicle stimulation hormone progesterone hormone Tricky.. I believe its estrogen
Sunday, April 17, 2016 by Anonymous

Biology , AP Biology
which of the following are autotrophs ? A. plants , some protists and some bacteria B. plants C. plants and some bacteria D. plants and some protists
Saturday, April 16, 2016 by Anon

Biology
Can the same probes be used for both western blots and northern blots?
Friday, April 15, 2016 by Anonymous

science/biology
introduction to cane toad
Thursday, April 14, 2016 by hannah

Biology
I was asked to do a question about Ethylene gas and its effect on plants. One of my classmates said that plants cannot produce fruit and seeds without the gas... I know ethylene helps ripen and quicken the speed of the fruit/seeds, but can't the plant do it naturally ...
Wednesday, April 13, 2016 by SkatingDJ

Biology
Blockage of the common bile duct would be expected to affect lipid digestion. protein digestion. carbohydrate digestion. nucleotide digestion. cellulose digestion. lipid is the only common sense one?
Wednesday, April 13, 2016 by Anonymous

Biology
Which of the following is NOT a function of the stomach? A. store food B.kill bacteria C. digestion of most foods D. move chyme into the duodenum Tricky help?
Wednesday, April 13, 2016 by Anonymous

Biology
Why do the nuclei of the human white blood cells turn blue in a prepared blood slide?
Tuesday, April 12, 2016 by Lisa

biology
How does meiosis and fertilization in humans and other sexual reproductive organisms maintain the normal chromosomes number for each species?
Monday, April 11, 2016 by Hannah

Biology
1. In a plant’s stem, the vascular tissue (1 point) is always arranged in rings of vascular bundles. is continuous from the roots to the leaves.*** carriest nutrients up the stem but not down. plays a role in photosynthesis and storage. 2. Many cacti, such as saguaros and...
Sunday, April 10, 2016 by SkatingDJ

Biology
What would happen to other organisms if prokaryotes did not recycle nutrients? Please help, I just need a couple of sentences so I can understand what it means:/ Thanks
Saturday, April 9, 2016 by SkatingDJ

Biology
GRey flies are dominant to black flies. Make a cross between two flies expected to have all black offspring:
Saturday, April 9, 2016 by Yolanda

Biology
How does meiosis and fertilization in humans and other sexual reproductive organisms maintain the normal chromosomes number for each species?
Saturday, April 9, 2016 by Anonymous

Biology
What is the biological process that results in the production of gametes?
Saturday, April 9, 2016 by Anonymous

Biology
Each sperm of a tomato plant contains twelve chromosomes. What are the haploid and diploid numbers?
Saturday, April 9, 2016 by Cecilia

Biology Help Please!
1 ) A temperature-sensitive mutation in the lacI gene of E. coli creates a repressor protein that has wild-type function at 30°, but is a superrepressor protein at 42° (unable to bind allolactose). You test this strain with and without lactose, at two temperatures, for...
Saturday, April 9, 2016 by Tenshi

Biology
If plants need oxygen for cellular respiration, then why do plants release oxygen into the atmosphere? More oxygen is produced during photosynthesis than the plant needs for cellular respiration, so the plant needs to release the extra oxygen. Plants need to collect more ...
Friday, April 8, 2016 by SkatingDJ

biology
if a person exercise in a warm environment and if he exercise in a cool environment, will there be any difference between the amount of calorie he will lose?and if,in which environment he will lose more calorie? please explain the reason.
Thursday, April 7, 2016 by tasnuba

biology
Describe the function of each of the above organelles. In addition, compare each organelle to something else (examples: the nucleus is like a boss because both are in control of something larger)
Wednesday, April 6, 2016 by cristina

Biology
I am supposed to make different ligations. These are the stocks I am given: Cut pET41a(+) DNA: 25 ng/ul egfp insert DNA: 7 ng/ul Uncut pET-41a(+)/EGFP recombinant plasmid DNA: 25 ng/ul This is the ligation I am supposed to make: Ligation #1: 1:1 molar ratio pET-41a(+) vector: ...
Wednesday, April 6, 2016 by Anonymous

Biology
I'm sorry but I had to post this question again as I left out the question. In a certain species of plant, the allele to produce green melons (G) is dominant over the allele to produce yellow melons (g). A student performed a cross between a plant that produced green ...
Tuesday, April 5, 2016 by Stephanie

Biology
I'm doing a research paper on Plectaster decanus, the Mosaic Sea Star and I'm looking for certain information on its diet. There is little information on the internet about this species so I was wondering what is the general diet of a southern Australian sea star? Also...
Tuesday, April 5, 2016 by Kevin

Biology
what does it mean for two species to be reproductively isolated from each other??
Monday, April 4, 2016 by Sheldon Shelley

Biology
What is the effect of of adding more sugar to a solution? What will happen to its consistency?
Sunday, April 3, 2016 by Isaiah

Biology
In a certain species of plant, the allele to produce green melons (G) is dominant over the allele to produce yellow melons (g). A student performed a cross between a plant that produced green melons and a plant that produced yellow melons. When the student observed the next ...
Saturday, April 2, 2016 by Stephanie

Biology
Which organelle would you expect to find in the cells of a fern, but not in a flatworm? chloroplast **my choice nucleus ribosome mitochondria
Thursday, March 31, 2016 by Jessica

Biology
I'm going as this question again as it seems to far down the list to be answered now. Sorry if this is considered spam.
Wednesday, March 30, 2016 by Jana

Biology
We are learning about proteins and their structure, but one thing is confusing me. At what structural point is something considered a protein? Is a protein formed after two amino acids synthesis, or is a protein the whole structure (all four levels) put together? I would think...
Wednesday, March 30, 2016 by Jana

Biology
Why might it be difficult to classify some molds as unicellular or multicellular? I'm really confused:/ Can somebody please explain this?
Wednesday, March 30, 2016 by SkatingDJ

Biology
In the classification of eukaryotes, protsists were once placed in a single kingdom. Briefly evaluate whether this classification system is accurate. Why might it be difficult to classify some slime molds as unicellular or multicellular? I know the first one is innacurate, but...
Wednesday, March 30, 2016 by SkatingDJ

Biology (High school science)
If non-nucleated cells of meristematic tissue are used for tissue culture, then growth rate will be : a) High b) Average c) Very low d) Growth may not take place. Please help!
Wednesday, March 30, 2016 by Shreya

Biology
What is considered the most critical function of erythrocytes? the transport of oxygen the transport of carbon dioxide buffering against changes in blood pH assisting in clot formation All of the answers are considered the most critical functions of erythrocytes.
Tuesday, March 29, 2016 by Anonymous

Biology
The normal flow of blood through the heart would be right atrium → right ventricle → lungs → left atrium → left ventricle. right atrium → left atrium → left ventricle → aorta. lungs → right atrium → right ventricle → ...
Tuesday, March 29, 2016 by Anonymous

Biology
Systolic blood pressure is the pressure in veins. pressure in major arteries caused by the contraction of the left ventricle. pressure in major arteries when the heart is relaxing. difference in pressure that causes the pulse. hard im thinking its B
Tuesday, March 29, 2016 by Anonymous

Biology
The major vein that delivers blood from the lungs to the heart is the femoral vein. inferior vena cava. superior vena cava. pulmonary vein. jugular vein.
Tuesday, March 29, 2016 by Anonymous

Biology Honors
Hardy-Weinberg: Within a population of birds, 21 percent of them display the recessive phenotype for a particular trait. What are the allele frequencies for this trait assuming the population is in genetic equilibrium? I'm absolutely confused on this ;l
Sunday, March 27, 2016 by Edward

Biology (Please Help!)
When we spin around in one place and stop, we feel as though we are still moving. This feeling is caused by continued Select one: A. transmission of nerve impulses from cochlea to auditory nerve B. movement of fluid against cochlea C. vibrations of tympanum D. movement of ...
Wednesday, March 23, 2016 by Anonymous

Biology
When we spin around in one place and stop, we feel as though we are still moving. This feeling is caused by continued Select one: A. transmission of nerve impulses from cochlea to auditory nerve B. movement of fluid against cochlea C. vibrations of tympanum D. movement of ...
Wednesday, March 23, 2016 by Anonymous

biology
a)what are the main similarities b/n cholera and typhoid? b)what are the main d/ce b/n cholera and typhoid? c)how can the spread of cholera and typhoid be prevented as far as possible?
Tuesday, March 22, 2016 by yaekob

Biology
Treehoppers have either purple, or green, or white skin. Other geneticists have determined that: (1) whenever one white treehopper is mated with another white treehopper all the progeny are white. (2) whenever two pure bred purple treehoppers are mated all their progeny are ...
Monday, March 21, 2016 by Jared

biology
When chromatids separate during anaphase two (in meiosis), do all the maternal and paternal chromatids stay together or do they randomly separate into the daughter cells?
Monday, March 21, 2016 by Larry

Biology i need your help
list the risks of calcium(Ca) for our health.
Monday, March 21, 2016 by Yaekob

Science
Please Check! 1. How does nanotechnology help engineers make products for the future? a. By changing a materials atomic structure, it can be made from elements that are easier to obtain.*** b. By changing a material's atomic structure, its physical properties can also be ...
Friday, March 18, 2016 by SpitFireRedHead

Science Please Check
Please Check 1. How does nanotechnology help engineers make products for the future? a. By changing a materials atomic structure, it can be made from elements that are easier to obtain.*** b. By changing a material's atomic structure, its physical properties can also be ...
Friday, March 18, 2016 by Blair

biology assignment
How are cohesion and adhesion properties of water linked to photosynthesis
Thursday, March 17, 2016 by salz

biology assignment
How are cohesion and adhesion properties of water linked to photosynthesis Assignment: maximum of 3 pages Introduction, main body, conclusion, reference (havard referencing system)
Thursday, March 17, 2016 by salz

biology
Muscle tissue that is under voluntary control and contains cells with many nuclei is cardiac. skeletal. smooth. cartilage. squamous.
Wednesday, March 16, 2016 by Anonymous

Biology
Which tissue type forms glands? connective epithelial muscle nervous glandular help? hard
Wednesday, March 16, 2016 by Anonymous

Language arts, all right?
(During the break between classes, LEE approaches CHANDRA, who is getting a book out of her locker.) LEE: Hi, Chandra. CHANDRA: Hi, Lee. Are you getting used to this new school yet? LEE (hesitantly): Well, I’m finding my classes all right, but… (whispers) Is it ...
Monday, March 14, 2016 by Cameron

biology
1.intermediate waters is caused by? 2.deep water currents are important because? 3. water that sinks are? 4.water that rises are?
Monday, March 14, 2016 by anonymous

Biology
Number of ATP by oxidative phosphorylation from a 24 carbon fatty acid? I have 96 because fatty acids go to CoA (2ATP) and the Krebs (22ATP). Glucose has 6C and so you add 2+22ATP and multiply by 4 to get 96. Is this right? If not, how do I figure this out?
Monday, March 14, 2016 by Anonymous

Biology
How much ATP energy would you get from a tripeptide that, upon hydrolysis and deamination, makes two acetyl CoA and one pyruvate molecule and undergo aerobic respiration?
Monday, March 14, 2016 by Anonymous

biology
what type of cell recognizes cells that have been infected by viruses because the infected cells have viral proteins on their surfaces?
Sunday, March 13, 2016 by katie

Biology
Compare and contrast between these two plant polysaccharides : starch and cellulose.
Sunday, March 13, 2016 by Petrus

Biology
How do I set up a trihybrid punnett square if the cross is TTRRPp x TtRrPp?
Saturday, March 12, 2016 by Liz

Biology
Why do we use dna primer for PCR but RNA primer for dna polymerase in cells
Friday, March 11, 2016 by asdasdfasdf

biology
It was observed that due to poor nourishment the average weight of beetles reduced. If this continues in a number of generation, will this feature direct evolution? Explain
Thursday, March 10, 2016 by pankaj

Biology
Multicellular organisms use a variety of communication methods to coordinate cell function. Choose ONE of the following examples below and describe the cell-to-cell communication that occurs, and then describe the types of responses that result from this communication. ...
Thursday, March 10, 2016 by nan

Biology
Define a protein kinase and explain its role in a signal transduction pathway. Then describe what can happen if an organism's cells experience abnormal protein kinase activity.
Thursday, March 10, 2016 by nan

Biology
Describe the G protein receptor system and the tyrosine-kinase receptor system. Explain how these two systems are similar and how these two systems are different, in terms of structure and function please.
Thursday, March 10, 2016 by nan

Biology
The Hershey-Chase experiment proved that DNA was the hereditary material because a- radioactive phosphorus in viral proteins was shown not to enter bacterial cells. b- radioactive phosphorus in viral DNA was shown to enter bacterial cells. c- radioactive sulfur in viral ...
Wednesday, March 9, 2016 by Steve

Biology
I have a research article about the early advancement of laying times for Flycatchers, a bird species through Europe and Asia. My variables are: - Annual temperature recordings in each study site - The species, flycatcher - Clutch size of the flycatchers - The location of each...
Monday, March 7, 2016 by Kevin

Biology - Evolution
Suppose you grabbed ten seeds from the large number of seeds that were present and planted them in a garden. During the summer you harvest 100 bean seeds from these 10 groups of plants? Would you wee the same distribution of seed size as when you first planted the seeds? ...
Monday, March 7, 2016 by Jen

Biology
I need help creating a pedigree using this description: Lily is 28 years old. She has a younger brother Nick who has hemophilia and a younger sister, Sharon. Lily's parents are George and Maureen. George has a older brother named Edward and a older sister named Rachel. ...
Sunday, March 6, 2016 by Amy

Biology
How do ATP and ADP function in capturing and releasing energy?
Saturday, March 5, 2016 by Halle

Biology
Describe what you observed in the hands-on animal behavior lab. What conclusions did you draw from the data? Explain your answer.
Friday, March 4, 2016 by nan

Biology
Describe a specific type of chemical or audible communication used by animals to respond to an external stimulus and the resulting change in behavior. Explain how this type of communication may relate to natural selection within a population.
Friday, March 4, 2016 by nan

Biology
In one signaling pathway, cyclic AMP (or cAMP) acts as a second messenger in a series of reactions that result in the relaxation of smooth muscle cells in artery walls. Define cyclic AMP and describe the role and properties of a second messenger. Then explain how a medication ...
Friday, March 4, 2016 by nan

Biology
Multicellular organisms use a variety of communication methods to coordinate cell function. Choose ONE of the following examples below and describe the cell-to-cell communication that occurs, and then describe the types of responses that result from this communication. ...
Friday, March 4, 2016 by nan

Biology
Define a protein kinase and explain its role in a signal transduction pathway. Then describe what can happen if an organism's cells experience abnormal protein kinase activity.
Friday, March 4, 2016 by nan

Biology
Explain how cell membranes and their components participate in intercellular signaling. Give a specific example of cell membrane involvement in one particular type of cellular signaling.
Friday, March 4, 2016 by nan

Biology
Describe the G protein receptor system and the tyrosine-kinase receptor system. Explain how these two systems are similar and how these two systems are different, in terms of structure and function please.
Friday, March 4, 2016 by nan

Biology
The single defining characteristic of the mammals is the presence of? mammary glands. a placenta. hair. warm blood. a skul
Thursday, March 3, 2016 by Anonymous

Biology
1.,you drink salty beverages (clams to) and eat pretzels all day. At the end of the day your weight is way up. Why? I think it has something to do with the fact that our cells shrink in size ? I have no clue? 2. Athletes drink Gatorade . Why? Given the description, tell the ...
Thursday, March 3, 2016 by Maya

Biology
1.,you drink salty beverages (clams to) and eat pretzels all day. At the end of the day your weight is way up. Why? I think it has something to do with the fact that our cells shrink in size ? I have no clue? 2. Athletes drink Gatorade . Why? Given the description, tell the ...
Wednesday, March 2, 2016 by Maya

Biology
What can happen to our virtual finch population if the weather changes between wet and dry conditions too rapidly? A- The mutation rate may fall to zero. B- The distribution of beak sizes may cease to be bimodal. C - The finch population may go extinct. D - Beak size may cease...
Tuesday, March 1, 2016 by Daniella

Biology
Why is coelom considered to be an evolutionary advantage
Tuesday, March 1, 2016 by Hasidiah

Biology
A person in Flint Michigan, has severe DNA damage due to heavy metal comtaminated water and the person is still alive. The doctors are now seeing tumors develop. Give two reasons, related to tumor suppression, DNA replication or some other topic covered to date in this class ...
Tuesday, March 1, 2016 by Broam

Science/Biology
the vessels that contain the largest volume in the vascular system are? I think Arteries
Tuesday, March 1, 2016 by Anonymous

biology
I got a biology project that's about the excretory system & I have to write the word excretory & draw pictures inside of the word that compares it to real life. What pictures can something be compared that involves with the system?
Monday, February 29, 2016 by Clarissa

biology
given the inefficiency of two of the pathway shown in figure 9-4 what advantage could there be to using these pathway to produce energy?
Monday, February 29, 2016 by Anonymous

Science/biology
A 62 year old man experiences sudden onset of difficulty breathing, followed by double vision, and later by abnormal kidney and liver function tests. Of the following conditions, which is most likely the cause of his problems? A. Vasculitis​​ B. Raynaud's ...
Monday, February 29, 2016 by Anonymous

biology
hi. I would like to know in reference to wind and insects moving pollen to different species of flowers at the same time, why doesn't pollen in one species fertilize egg of a second species thus forming hybrids?
Monday, February 29, 2016 by cat

biology
the amount of energy needed to start two reactants to form a product is?
Sunday, February 28, 2016 by lisa

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Homework Help: Science