Saturday
October 1, 2016

Homework Help: Science: Biology

Recent Homework Questions About Biology

Biology
What cellular mechanisms causes short term changes in gene expression
Tuesday, January 26, 2016 by Anonymous

Biology
For your cell explain how gene expression related to the cell's ability to perform its function in the body
Tuesday, January 26, 2016 by Anonymous

Biology
Explain why some proteins are made by nearly all cells and give two examples I put they are needed for basic cell life but I don't know what two examples to put
Tuesday, January 26, 2016 by Anonymous

Biology
How did you model crossing over using your chromosomes?
Monday, January 25, 2016 by Anonymous

Biology
I just want to know how to improve on Biology. I know most people will say to study but even when I study for this class, I still can't do as well as I want to. Any tips?
Monday, January 25, 2016 by Anonymous

Mathematics,Science(physics,chemistry and biology)
Two similarly charged identical ping pong balls are suspended from the common support with the help of two threads.Calculate angle between the two threads and also calculate the tension in two strings.
Monday, January 25, 2016 by Shhd

Biology
Describe how you would prepare 100ml of a solution that is 22% acetic acid by volume?
Sunday, January 24, 2016 by Michel

math
In a class of 50 student 28,22,20 of them offer physics,chemistry and biology respectively also,4 of them offer physics and chemistry but not biology,3 offer physic and biology but not chemistry,6 offer biology and chemistry but not physics if 13 of them offer physics only how...
Sunday, January 24, 2016 by dapo

Math
Out of 300 student in final year in senior secondary school, 200 are offering biology and the150 offering chemistry how many are offering neither biology nor chemistry
Sunday, January 24, 2016 by Emmanuel

Sta 112
This is my question every one . Please help me have it already I had 6 as my answer. In a class of 50 student 28,22,20 of them offer physics,chemistry and biology respectively also 4 of them offer physics and chemistry but not biology,3 offer physics and biology but not ...
Saturday, January 23, 2016 by Anonymous

World History check my answers
Please check my answers. I put a star* by the one i chose. 1. What innovation is Henry Ford credited with pioneering? a. Combustion engines b. Assembly line* c. Increasing workers’ pay 2. Identify one of the troubles the Coolidge administration faced with dealing with ...
Monday, January 18, 2016 by Cat

Biology
If a cell has 8 duplicated (double stranded) chromosomes during metaphase of mitosis, how many chromosomes would the cell have at the end of anaphase?
Monday, January 18, 2016 by Jodi

Pure Maths, Biology , Business ,CAT
What can I study in university with these subjects?
Friday, January 15, 2016 by Sihle

biology
A tall pea plants bearing violet flowers is crossed withshort pea plants bearing white flowers .work out the f1 &f2 generations.give f2 ratio
Friday, January 15, 2016 by thanvi

Biology
Where the CD8 receptor is located: On Ts cells or Tc cells or both of them.
Thursday, January 14, 2016 by Asmaa khalaf

biology
What is the different between theory of plate tectonics, continental, drift, and sea- floor spreading?
Wednesday, January 13, 2016 by nerd1234

Are there any Biology teachers that could help me?
Are there any Biology teachers that could check my answers for me?
Tuesday, January 12, 2016 by Victoria

Biology
Which of the following is true for the nucleus? A) It has no definite structure B) It is surrounded by membrane C) It is the eukaryotic cell's energy-producing organelle D) It is closely associated with the Golgi apparatus. E) It is always bluish purple in colour
Monday, January 11, 2016 by S

Biology
How do you determine how the age of a specimen where there is only 1/2 of the original Carbon14 isotope left? What if 1/2 of the original isotope was left? I cannot show my work because I do not know how to figure this out.
Sunday, January 10, 2016 by Diane

Biology
Two purple flowers (Bb) are bred with each other in the same garden. What are the odds that red (BB) and blue (bb) flowers will occur in the second generation? A. 50% red flowers; 50% blue flowers B. 25% red flowers; 75% blue flowers C. 75% red flowers; 25% blue flowers D. 25...
Friday, January 8, 2016 by SkatingDJ

Biology
Which of the following structures is derived from the embryonic prosencephalon (forebrain)?
Thursday, January 7, 2016 by Dwarkesh

Biology
How do genes determine the traist of an organism explain in details
Wednesday, January 6, 2016 by Anonymous

biology
Looking through a microscope,I saw a Eukaryotic cell. How could I conclude if the cell is a plant or animal cell?
Wednesday, January 6, 2016 by aisha

Biology/Chemistry
Does anybody know how much 1 mole of acid should be diluted in order to mimic the pH of acid rain? I also need sources, but haven't been successful in any of my searches so far, thanks.
Wednesday, January 6, 2016 by Alice

biology help please :)
Olga's teacher asked her to design an experiment using freshwater plants, fish bowls, tap water, and salt. After determining an approach, Olga placed a plant in each of three fish bowls. Then, she filled one bowl with fresh water, one bowl with dilute salt water, and one ...
Wednesday, January 6, 2016 by basketball&batman

Science:Biology
What are some unusual characteristics of food webs in agroecosystems?
Tuesday, January 5, 2016 by Christine

7th grade math
A biology class has 28 students. Four of the students transferred out to take chemistry. Find the percent of change in the number of students in the biology class. I got 86 percent change is that right? Thank you...My mom says it's 14.3 %
Tuesday, January 5, 2016 by Peggy

Biology
The street lights in many cities contain bulbs with sodium vapor. When electrical energy is pass through the bulb, a brilliant yellow light is given off. What is happening to the sodium atoms to cause this? Explain. How would magnesium and chlorine interact? Please help. Thank...
Tuesday, January 5, 2016 by Jamie

Biology
When inserting a gene, a gene for antibiotic resistance were also added to the plasmid. Why is this done?
Tuesday, January 5, 2016 by Rose

Biology
List down 20 acids with their property and identify them by saying polar or non polar and acidic charge or basic charge
Tuesday, January 5, 2016 by Jerry

Biology
3. One different between a point mutation and a chromosomal mutation is that A. A point mutation affects the DNA of more genes than a chromosomal mutation B. A point mutation can involve a insertion or deletion, but cannot result in a frameshift C. A chromosomal mutation can ...
Monday, January 4, 2016 by SkatingDJ

biology help please :)
Two chemists measure the densities of an unknown metal sample. They both find that the sample has a density of 8.94 g/mL. Chemist A uses a chart and says that the metal must be copper since the density of copper is exactly 8.94 g/mL. Chemist B says that the metal could be a ...
Saturday, January 2, 2016 by basketball&batman

Biology
Explain the ramifications to the process of transcription if the following occurs: A) The termination sequence of a gene is removed
Friday, January 1, 2016 by Rose

biology
what are the main similarties and differences between the three main food groups,carbohydrate,proteins and fats?
Friday, January 1, 2016 by jacob

Biology :)
Consider the following situation. A cell is in a solution that contains dissolved oxygen. As the cell uses oxygen for respiration, a. oxygen will be carried across the cell membrane by special transport molecules. b. oxygen will naturally diffuse out of the cell. c. no ...
Thursday, December 31, 2015 by Anonymous

1 Biology question please :)
Osmosis is the process in which _______ diffuses across a cell membrane. a. water b. energy c. protein d. oxygen I think its a
Thursday, December 31, 2015 by Anonymous

Biology
3'-GGCACTCGCATAATATTCGCCATGGCT -5' In the DNA sequence above, how do i identify the promoter region..
Thursday, December 31, 2015 by Rose

English
If you are in line early, youll be sure to get the best tickets. A. Compound-complex B. complex C. Compound D. SImple 2. Heather is in charge of decorations, and Enrique is bringing snacks. A. simple B. Compound C. Complex D. Compound-complex 3. My two dogs are named Hannah ...
Friday, December 18, 2015 by Mckenna

biology
which ion would cease being taken up if the plant is treated with a metabolic poison that inhabits ATP synthesis ? give a reason
Friday, December 18, 2015 by seraphine

Biology
Describe the characteristics of living things and provide examples to illustrate your description. I have all my characteristics but I need one example. Here is my characteristic: Living things grow
Thursday, December 17, 2015 by Anonymous

Biology
Given the inefficiency of two of the pathways shown in figure 9-4, what advantage could there be to using these pathways to produce energy?
Thursday, December 17, 2015 by Anonymous

english
Through my degree in Biology I became experienced with statistical analysis as well as writing literature reviews. Are there any grammar errors in that sentence?
Thursday, December 17, 2015 by ann

Biology
Rank the following from most acidic to least acidic. sample pH bleach 12.5 coffee 4.2 rainwater 5.4 soap 10.1 My answer: Bleach, Soap, Rainwater,Coffee Is that right?
Thursday, December 17, 2015 by Anonymous

Biology
what can you say about the amount of hydrogen ions relative tot he amount of hydroxide ions in a solution that has a pH of 2?
Tuesday, December 15, 2015 by Aidan

Biology
What effects does epinphrine have on the excretory and endocrine systems.. i cant find any sites to help
Tuesday, December 15, 2015 by Rose

English (Cover Letter)
I suppose that I need to place a comma after "statistics", since the first phrase seems like it is a dependent clause. Am I right? "Through my Bachelor’s degrees in Biology and Statistics from XYZ University I developed a desire to work in a research ...
Tuesday, December 15, 2015 by Rema

biology
Which characteristic do glycogen and starch share?
Monday, December 14, 2015 by Perla Mayorga

Biology
How do changes in DNA affect changes in adaptations? (I am of the assumption that changes in DNA spur the adaptations that take place--at least those through genetic mutation--and thus the adaptations that are most beneficial prevail. May I please have some clarification? ...
Sunday, December 13, 2015 by Samantha

Biology
What is the end result of the cell cycle and mitosis? Are daughter cells identical
Sunday, December 13, 2015 by Anonymous

Biology
As you go up the energy pyramid __% of the energy is loss at each level and only __% remainds. In what form is this energy lost as? ___ First blank 10%
Sunday, December 13, 2015 by Anonymous

Biology
The endocrine system a. affects only the reproductive system b. releases hormones into the bloodstream c. competes with the nervous system d. is made up primarily of glands with ducts I chose d. Is this correct? I want to make sure.
Sunday, December 13, 2015 by Peeps (BtsArmy)

Biology
3grams of ammonium chloride has been added to 20mL of water. The initial temperature of the solutionis 18.0 degrees, and once the ammonium is added to the water, the temperature declines to 11 degrees. Given the following information, calculate the enthalpy of solution per ...
Sunday, December 13, 2015 by Adeline

english
1.Which literary device is used in the following sentence? According to that report, these special materials can bend "radar light, or other waves around an object like water flowing around a smooth rock in a stream." A.simile B.metaphor C.alliteration D....
Sunday, December 13, 2015 by GummyBears

Biology
As you go up the energy pyramid __% of the energy is loss at each level and only __% remainds. In what form is this energy lost as? ___ First blank 10% That's all I know
Saturday, December 12, 2015 by Anonymous

Biology
The wird diversity in biodiversity refers to what
Saturday, December 12, 2015 by Anonymous

Biology
What is the main subunit of DNA Nucleotides?
Saturday, December 12, 2015 by Anonymous

Biology
light energy is converted to chemical energy in the process of Photosynthesis? The process where plants transfer solar energy into chemical energy to make organic molecules (glucose) is known as Photosynthesis also>?
Saturday, December 12, 2015 by Anonymous

Biology
Mutualism Commensalism Predation Parasitism Name the relationship A tick on a dog PArasitism A lion eating a zebra Prdation A roundworm in a human intesteine Parasitism A fly living on the back of a rhino Commensalism A clown fish living in coral clown fish cleans coral and ...
Saturday, December 12, 2015 by Anonymous

Biology
What is the end result of the cell cycle and mitosis? Are daughter cells identical
Saturday, December 12, 2015 by Anonymous

Biology
A. Proteins B. Carbohydrates C. Lipids D. Nucleic Acids Fatty Acids C Made of Amino Acids A Another name for sugars B Starches belong to these B Help build muscles A Immediate source of energy B Long term source of energy C Has the most calories per gram B DNA and RNA D ...
Saturday, December 12, 2015 by Anonymous

Honors Biology
Elizabeth is married to John, and they have four children. Elizabeth has a straight nose (recessive) and is able to roll her tongue (dominant). John is also able to roll his tongue, but he has a convex (Roman) nose (dominant). Of their four children, Ellen is just like her ...
Wednesday, December 9, 2015 by Hayley

Biology
What is chromatin and what does it turn into and how does it arrange itself? Chromatin forms chromosomes during cell division and consists of DNA RNA and proteins. It turns into separate structurs called chromosomes. Idk how it arranges itself
Tuesday, December 8, 2015 by Anonymous

Biology (Check, Please!)
Describe why an r-strategist might be better suited for an unpredictable environment than a K-strategist is. A: An r-strategist might be better suited for an unpredictable environment than a K-strategist because they grow exponentially when environmental conditions allow them ...
Monday, December 7, 2015 by Victoria

Biology
Need help on the deciding which releases the most energy - fermentation or cellular respiration. I read fermentation is quicker but didn't know if it necessarily released the most. Thanks...
Monday, December 7, 2015 by Brandi

Biology (Please, Help Me!)
Please, help me! Differentiate a logistic growth pattern from an exponential growth pattern.
Monday, December 7, 2015 by Victoria

Biology (Check, Please!)
Describe why an r-strategist might be better suited for an unpredictable environment than a K-strategist is. A: An r-strategist might be better suited for an unpredictable environment than a K-strategist because they grow exponentially when environmental conditions allow them ...
Monday, December 7, 2015 by Victoria

Biology
summarize the reproductive cycle of pines
Sunday, December 6, 2015 by Jena

Biology
There is a loud crash in the room behind you and you jump. which part of your nervous system caused that response/ A. somatic nervous system? C. central nervous system D. sympathetic branch E. parasympathetic branch My teacher told me b was wrong so thats why it's missing ...
Saturday, December 5, 2015 by Sherianna

Biology
Are proteins, lipids, starch, sugar, calcium (ion), iron (ion), and chlorine (ion) in blood plasma? if they are explain its function in the body.
Saturday, December 5, 2015 by Daniela

Biology
Results of an acrostic poem
Friday, December 4, 2015 by Kamiya

Biology Check my work please
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 **** (my choice) c) radioactive sulfur...
Friday, December 4, 2015 by sammy

biology check answers please
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 **** (my choice) c) radioactive sulfur...
Thursday, December 3, 2015 by sammy

Biology: Genetics
How do nucleotides and hydrogen bonds affect the structure of DNA? Maybe something like nucleotides make up DNA and hydrogen bonds hold the nitrogenous bases together? Can you help me explain?
Wednesday, December 2, 2015 by Derpy Pegasus

Biology
What does your body need oxygen for A. It is necessary to aerate the brain C. Cells need it to produce the energy they need to function D. Air flow aids in blood flow within the blood vessels E. It produces hemoglobin, needed to carry carbon dioxide My teacher said letter b ...
Wednesday, December 2, 2015 by Keon

biology
A category within biology that deals with the physical and chemical functions. A. Physiology B. Philosophy C. Psychology D. Physiopathology I believe it's B?
Wednesday, December 2, 2015 by Luxine

biology
Which of the following organelles is common to both prokaryotic and eukaryotic cells? Cytoskeleton Nucleus Nucleolus
Monday, November 30, 2015 by kevin

Math (prob)
The probability of an outstanding student pass a biology test is 60%. If he takes three test, which are the experimental results for each test? My doubt is if I should consider the pass=.6 since the first event or when it mentions that the probability is .6 and he takes three ...
Saturday, November 28, 2015 by Bet

Math (prob)
The probability of an outstanding student pass a biology test is 60%. If he takes three test,which are the experimental results for each test? Please, help me to understand.
Friday, November 27, 2015 by Bet

Biology
How can i design an experiment to determine which wavelengths of light provide the optimal energy for photosynthesis
Thursday, November 26, 2015 by Rose

Biology
How do you think increasing temperature would affect the rate of photosynthesis?
Thursday, November 26, 2015 by Rose

Math (prob)
The probability of an outstanding student pass a biology test is 60%. If he takes three test,which are the experimental results for each test? Please, help me to understand.
Thursday, November 26, 2015 by Bet

Biology
What can you say about the amount of hydrogen ions relative to the amount of hydroxide ions in a solution that has a pH of 2?
Sunday, November 22, 2015 by Malcolm

biology
A researcher is collecting qualitative data pertaining to social behaviors of deer at different times of the day. How will she most likely need to organize this data?
Saturday, November 21, 2015 by Anonymous

Biology
6. The gene for a large single eyeball is coded by the gene sequence TTCGCTGAA. Let’s go through transcription… DNA Strand- T-T-C-G-C-T-G-A-A mRNA Strand- _____________________________ 7. Now, let’s look at the gene for green body color, which is GGACTCTAG. With...
Friday, November 20, 2015 by Anonymous

Biology Check answers
1.   Which of the following correctly describes the image below?    protein Molecule RNA Molecule amino Acid carboxylic Acid 2.   Glucose and fructose are monosaccharides that have the same chemical formula, C6H12O6. However, they do not react...
Friday, November 20, 2015 by Anna

Biology
.) CAGTGCAT _________ a) CGGTGTCT 2.) TGACTAAG _________ b) ACTGATTC 3.) GCCACAGA _________ c) GTCACGTA
Thursday, November 19, 2015 by OP

Biology
Find the complimentary DNA sequence after going through DNA replication… 1) AAGTCCAT a) ACTGAATG 2) TGACTTAC b) CGGAGTTT 3) GCCTCAAA c) TTCAGGTA
Thursday, November 19, 2015 by Anonymous

Biology
What does synthesize mean in biology
Tuesday, November 17, 2015 by Anonymous

Biology
how does a plant store the carbohydrates it produces in photosynthesis
Tuesday, November 17, 2015 by Anonymous

Mathematics
A survey of 100 students produced the following statics: 32 study mathematics, 20 study physics, 45 study Biology, 15 study mathematics and biology, 7 study mathematics and physics, 10 study physics and Biology, 30 do not study any of the three subjects 1, Present the ...
Tuesday, November 17, 2015 by Mesh

biology
The purines in DNA are A. thymine and cytosine B. thymine and guanine C. adenine and guanine D. adenine and cytosine
Tuesday, November 17, 2015 by abdu

Biology
What is the overall chemical formula for photosynthsis? 6Co2+6H2O--->C6H12O6+6O2 Where does the energy come from in photosynthesis? From Sunlight? What is the relationship between photosynthesis and respiration Photosynthesis makes the glucose that is used in cellular ...
Monday, November 16, 2015 by Anonymous

why does photosynthesis require energy
biology
Monday, November 16, 2015 by Skay

biology
how can hormones can be duplicated and transformed into medicine ?
Monday, November 16, 2015 by lilllly

biology
state one reason why the concentration of glucose in the blood decreases.
Monday, November 16, 2015 by Eman

Biology
state one reason why the concentration of glucose in the blood increases.
Monday, November 16, 2015 by Eman

biology
Describe in a short answer the history of the discovery of DNA
Monday, November 16, 2015 by lori

Biology
simulate a 24 hour day 12 hours of light 12 hours of dark how many snails and plants do you ened to keep a stable environment
Saturday, November 14, 2015 by Anonymous

Biology
Animals breathe in ___ and breathe out __ In sunlight plants take in ___ and realease __
Saturday, November 14, 2015 by Anonymous

Biology
What gas do plants give off in the light
Saturday, November 14, 2015 by Anonymous

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Homework Help: Science