Monday
December 22, 2014

Homework Help: Science: Biology

Recent Homework Questions About Biology

Post a New Question | Current Questions

biology
What role does the lilac flower play in its natural ecosystem? What is its niche in the food web
Saturday, December 20, 2014 at 5:24pm

Biology
In an ecosystem, when energy is given off as heat, does it change forms from chemical substances to heat? Or is it something different?
Friday, December 19, 2014 at 8:26pm

biology,chemistry,physics
the contact process prepares purest form of sulphuric acid 2so2+o2=2so3 calculate its kp if following concentrations are found at equilibrium so2=0.59,o2=0.05 and so3=0.259
Thursday, December 18, 2014 at 6:28am

biology
Explain how a new population might be formed
Wednesday, December 17, 2014 at 9:15pm

biology
what is the most accepted mechanism for evolution
Wednesday, December 17, 2014 at 8:26pm

biology
Explain how a scientist would use DNA or protien sequences taken from three different organisms to create a cladogram
Wednesday, December 17, 2014 at 7:21pm

biology
Explain how a scientist would use DNA or protien sequences taken from three different organisms to create a cladogram?
Wednesday, December 17, 2014 at 12:43pm

Biology
If there are two sets of 21 chromosomes in a rats lung cell, how many total chromosomes are there in a cell that undergoes mitosis? Answer: 42
Monday, December 15, 2014 at 12:11am

Biology
The creation of sex cells occurs in meiosis. Explain what happens when a new organism is created and life begins. Answer: meiosis is a process of cell division that produces sex cells, or gametes. Gametes are reproductive cells such as the sperm and egg. As gametes are ...
Monday, December 15, 2014 at 12:02am

Biology
Explain what happens at the first checkpoint If GO is prevented from occuring. Answer: these cells can be called back from the G0 phase to the cell cycle by external cues
Sunday, December 14, 2014 at 11:22pm

Biology
If there are two sets of 21 chromosomes in a rat's lung cell, how many total chromosomes are there in a cell that undergoes mitosis? Answer: 42
Sunday, December 14, 2014 at 11:19pm

Biology
Male donkeys have 62 chromosomes in an eye cell. How many chromosomes would be found in a female donkeys egg? Answer: 62 Normally, pigs have 38 chromosomes in each somatic cell. How many chromosomes are there in a cell that has gone through meiosis? Answer: 19 How many ...
Sunday, December 14, 2014 at 10:50pm

Biology
Ferrets have 40 chromosomes in each heart cell. There are ___ chromosomes in each egg. Answer: 20 If a skunk has 25 chromosomes in each gamete, then how many chromosomes are in each sperm cell? Answer: 25 Sheep have 27 chromosomes in each cell that had undergone meiosis. How ...
Sunday, December 14, 2014 at 8:26pm

Biology
1. Ferrets have 40 chromosomes in each heart cell. There are ____ chromosomes in each egg. Answer: 20 2. If a skunk has 25 chromosomes in each gamete, then how many chromosomes are in each sperm cell? Answer: 25 3. Sheep have 27 chromosomes in each cell that has undergone ...
Sunday, December 14, 2014 at 7:49pm

biology
Explain parts of the stem structure in the lilac flower or a flower similar to the lilac flower
Saturday, December 13, 2014 at 6:16pm

biology
I need help finding diagrams of the leaf structure, stem structure and root structure of a lilac flower with explanations. Sites would help
Saturday, December 13, 2014 at 5:10pm

Biology
name three ways somatic cells are different from gamete cells. 1. Gametes are sex cells and are always haploid 2. Somatic cells are non sex cells 3. ?
Friday, December 12, 2014 at 8:50am

Biology
explain what would happen if sperm and egg cells were accidentally diploid. If the gametes were not haploid, then the fertilized zygote would have four sets of chromosomes and would probablydie before birth.
Friday, December 12, 2014 at 8:09am

Biology
Different types of plants may be angiosperms, vascular seed, vascular non-seed, or non-vascularplants 1) Short grass meadow----I def. know it's not an angiosperm but can it be vascular non-seed 2) Magwort---im debating if it's non-vascular 3) Chokeberry -- def not an ...
Wednesday, December 10, 2014 at 4:52pm

Biology quick question
What is the method of nitrogenous waste removal for the following & choose between ammonia, urea or uric acid Tunicates Fishes Amphibians Reptiles Birds Mammals I think tunicates are urea and fishes are ammonia? But please help because I'm not sure and I don't know ...
Wednesday, December 10, 2014 at 10:36am

Biology
"Emma has difficulty sleeping. Her doctor prescribes Deflex. Deflex is a drug which affects the nervous system. Suggest and explain how Deflex affects the nervous system to help Emma sleep." I have missed a lot of time off of school and I understand how the nervous ...
Wednesday, December 10, 2014 at 4:55am

Biology quick help
What is the method of nitrogenous waste removal for the following & choose between ammonia, urea or uric acid Tunicates Fishes Amphibians Reptiles Birds Mammals I think tunicates are urea and fishes are ammonia? But please help because I'm not sure and I don't know the...
Wednesday, December 10, 2014 at 1:13am

Biology
If all of our cells have the same DNA, how come all 23 of our chromosomes are shaped differently?
Wednesday, December 10, 2014 at 12:23am

Biology
What can I write for an assignment that asks me to write about what ecology means to me? I don't know exactly what is meant by "means to you," as in the assignment.
Monday, December 8, 2014 at 5:01pm

biology
What are some benefits and challenges of being a pharmacologist?
Monday, December 8, 2014 at 4:39pm

biology
explain the vascular system in the lilac flower.
Saturday, December 6, 2014 at 1:48pm

Biology
If 320 F2 offspring resulted from this F1 cross, how many would be green?
Saturday, December 6, 2014 at 12:13pm

Biology
Based on cellular respiration, what happens when oxygen supply is cut off to an animal?
Friday, December 5, 2014 at 8:27pm

Biology
what is the vascular system of the lilac flower. i tried finding some sites. some sites would help me. PLease!
Friday, December 5, 2014 at 6:27pm

biology
Explain the vascular system of a lilac flower Some sites would help me very much as i cant find any that explain the vascular system of the lilac flower.
Thursday, December 4, 2014 at 10:02pm

Biology
Pod color and pod shape were two other traits Mendel was interested in. Set up a dihybrid cross for these two traits. Note: Green pods are dominant over yellow pods and inflated pods are dominant over constricted pods. -Start off with both parents as heterozygotes/hybrids for...
Thursday, December 4, 2014 at 6:32pm

Biology
How is ATP released as heat? Where does the heat go?
Thursday, December 4, 2014 at 4:14pm

Chemical Biology
Which fruits or vegetables or plants do not contain catalase enzyme?
Thursday, December 4, 2014 at 3:43am

biology
Describe the vascular system and functions of each component of the Lilac flower i tried to find some sites, but i cant find in any. So any sites would help as well
Wednesday, December 3, 2014 at 6:22pm

biology
To find out which key will open a lock, you try several until one works. This kind of learning is called ________________________.
Tuesday, December 2, 2014 at 10:01pm

biology
phase in photosynthesis during which the energy in sunlight is trapped and converted into ATP and NADPH I need the term for this and cannot find it anywhere. Thanks!
Tuesday, December 2, 2014 at 6:44pm

AP Biology
The respiration of plants is a biochemical reaction and should have a rate determined by the Arrhenius equation, k = Ae-EA/RT. Here, k is the rate, A is a constant, EA is the activation energy for the reaction, R is the gas constant, and T is the temperature in kelvins. If the...
Monday, December 1, 2014 at 5:04am

biology
which is true about the inside of a cell? -the inside of an animal cell contains structures that carry out specific jobs for the cell, but no water or molecules dissolved in water -the inside of an animal cell contains water, molecules dissolved in the water and structures ...
Monday, December 1, 2014 at 3:26am

Biology
Genome A 5-GCAGGCCATATAAAATAGCGCCATACTAGATACG​GG CCATATTATTGCATATCCGCCGATTACAGGATTTAATTT GGGAATTCCCCGATTAACGCGATCGATCGGGCCATATC GATATGCATCGTAATCCGGTAGATTCACAGGTAG -3 Genome B 5-GCATACCCAAATTAATAACGGCGGTAGGCGACTC​ATT ...
Sunday, November 30, 2014 at 8:22am

Science
For my science (biology) coursework i am doing an experiment involving photosynthesis- the cabomba experiment. I need to know 1- the variables that are controlled and why 2- what equipment is used and why PLEASE HELP... THANK YOU
Saturday, November 29, 2014 at 1:55pm

biology
Amoeba captures food with the help of
Friday, November 28, 2014 at 8:45am

Biology
In humans, the allele for brown eyes is dominant to the allele for blue eyes. If a man with blue eyes and a woman with brown eyes who is homozygous for eye color have children, what is the probability of having a child with blue eyes? Here are the choices: 25 percent, 100 ...
Wednesday, November 26, 2014 at 5:16pm

Intro Biology
I can't find examples in the book as reference. Please help me with these questions and explain why. 1.) Which of the following has no vascular tissue (“plumbing system”)? A) Conifer B) Angiosperm C) Fern D) Moss E) Ginkgo 2.) Which of the following ...
Tuesday, November 25, 2014 at 9:31pm

Biology
In what form of energy does energy from sunlight end up after photosynthesis and cell respiration?
Tuesday, November 25, 2014 at 1:20pm

Biology
What is this final stage of cellular respiration called where the most ATP molecules are made?
Tuesday, November 25, 2014 at 1:03pm

Biology
Discuss the common bacteria pathogens which are the most prevalent in causing disease in these three organs.
Tuesday, November 25, 2014 at 1:07am

Life-Span Development
I need for someone to check my questions letters that I match up to the answers that I chose Here are the questions 1. Concrete Operational Stage (I chose d) 2.Egocentrism (I chose i) 3.Formal Operational Stage (I chose h) 4.Influences on the Development of Self Concept (I ...
Saturday, November 22, 2014 at 9:24pm

Biology
I think this is a shot in the dark, but worth a try. I have the Biology: Life on Earth by Audesirk, Audesirk & Byers 10th edition bought used online, apparently there are some pages missing in the book, so I can't do my homework, if anyone has the book could, you help me ...
Saturday, November 22, 2014 at 8:02pm

biology
Are Lilac flowers vascular or non vascular
Saturday, November 22, 2014 at 6:05pm

Biology
Would glucose be considered a reactant in glycolysis? Also, some sites are saying that 4 ADP molecules are also reactants, but I don't understand how?
Saturday, November 22, 2014 at 4:04pm

Biology
How do the two ATP molecules charge the glucose molecule in glycolysis?
Saturday, November 22, 2014 at 2:59pm

biology
the manufacturer of carbohydrates, fats, and proteins. whats the word to this definition?
Thursday, November 20, 2014 at 10:14pm

biology
the release of waste into the enviroment. i need the word to this definition.
Thursday, November 20, 2014 at 10:07pm

biology
the breakdown of food by enzymes. What is the word that goes with this definition?
Thursday, November 20, 2014 at 9:52pm

Biology*STUCK*
A group of students was asked to list some of the similarities and differences between prokaryotic cells and eukaryotic cells. They created the table shown above. The students made a mistake in creating their table. Which statement best describes their mistake? a) Both ...
Thursday, November 20, 2014 at 9:25pm

Biology
Is a Lilac Flower: a) Vascular or non-vascular b) Gymnosperm or angiosperm c) Monocot or a dicot My Work i know c) is dicot but i am not sure of the other two
Thursday, November 20, 2014 at 7:39pm

Biology
Which alga is most closely related to plants? A) Chara B) Kelp C) Ulva D) Diatom E) Euglena I think it's chara, because it is green algae, but I'm not sure. Can you explain to me why it is or not?
Thursday, November 20, 2014 at 7:03pm

ap biology
The best conclusion concerning delta is that the cells a. contain no DNA. b. contain no RNA. c. contain only one chromosome that is very short d. are actually in the G0 phase e. divide in the G1phase Explain your choice: Would it be d?
Wednesday, November 19, 2014 at 12:43am

biology
cystic fibrosis is caused by a recessive allele. A child has cystic fibrosis, even though neither of his parents has cystic fibrosis. If this couple has another child, what is the probability he or she will NOT have cystic fibrosis ?
Monday, November 17, 2014 at 1:40am

Biology *CHECK PLEASE*?
Signals that help the body process and respond to information from the environment are ________________. active transport nerve impulses equilibrium Is it Active transport ?
Thursday, November 13, 2014 at 8:41pm

Biology*STUCK*
The fluid mosaic model describes the structure of the plasma membrane. Embedded within the plasma membrane are proteins and carbohydrates that contribute to the term mosaic. Glycolipids and glycoproteins are examples of carbohydrates on the surface of red blood cells that ...
Wednesday, November 12, 2014 at 8:44pm

Biology*STUCK*
The fluid mosaic model describes the structure of the plasma membrane. Embedded within the plasma membrane are proteins and carbohydrates that contribute to the term mosaic. Glycolipids and glycoproteins are examples of carbohydrates on the surface of red blood cells that ...
Wednesday, November 12, 2014 at 7:19pm

biology
if a color blind woman marries a man with normal vision,how do you set up punnett square?
Wednesday, November 12, 2014 at 3:26pm

Biology
When the CO2 concentration in the cells of a C3 plant is low compared with the O2 concentration, an enzyme combines RuBP with O2 rather than with CO2. What effect would this enzymatic change have on photosynthesis? Under what environmental conditions would it be more likely to...
Wednesday, November 12, 2014 at 2:24pm

biology
biolgist concludes that a molecule moves across cell membrane by facilitated diffusion because the molecule is small, polar and can accumulate inside cells even when its concentration inside the cell initially is higher that it is outside the cell and they use up more energy ...
Tuesday, November 11, 2014 at 5:00pm

biology
1. What allows a cell to stockpile substances in greater concentration than they occur outside the cell? is it active transport? 2. The sodium potassium pump prevents the accumulation of what ions inside the cell? 3. Conduction of nerve impulses is possible because of what? ...
Tuesday, November 11, 2014 at 4:53pm

biology
need help few questions 1. a signaling cell produces a signal that is detected by what type of cell? 2. If the interior of a typical cell is negatively charged, what type of charged ions will not require energy to diffuse into the cell using an ion channel? 3. Receptor ...
Tuesday, November 11, 2014 at 4:46pm

Biology
What is the relationship between the major body systems; Coordination systems through Homeostasis
Monday, November 10, 2014 at 3:22pm

biology
Various forms of a trait may be more or less ________ under given environmental conditions.
Monday, November 10, 2014 at 12:57pm

biology
Colour blindness is a recessive disorder. If a colour blind male is crossed with a normal female, what are the possible genotypes and phenotypes of the offspring
Thursday, November 6, 2014 at 8:17pm

Biology
What are the macromolecules DNA and RNA referred to as? Proteins Carbohydrates Nucleic acids
Thursday, November 6, 2014 at 7:49am

biology
What does the word cycle tell you about the chemical reactions of the Calvin cycle?
Wednesday, November 5, 2014 at 4:08pm

biology
which of the following types of cells need to make energy to perform basic functions like growing, moving, and reproducing? -animal cells -animal cells and bacteria cells -animal cells, bacteria cells, and plant cells -plant cells
Monday, November 3, 2014 at 9:11pm

biology/cells
what cells can make energy from sugar molecules? -only plant and animal cells -only animal cells -plant, animal, bacteria, and protist cells -only plant cells
Monday, November 3, 2014 at 8:47pm

Biology
The scientist analyzes the insulin molecules, which are proteins, of three different species, A, B, and C. The insulin from A is different from B in six ways and from C in three ways. The insulin from B is different from C in two ways. Which two species appear to be most ...
Monday, November 3, 2014 at 5:57pm

Biology
Please Give 10 statements to prove that plants can reproduce sexually.
Wednesday, October 29, 2014 at 9:04pm

can someone help me with biology
please
Wednesday, October 29, 2014 at 12:17am

BIology
please answer mine ms sue if you can. if not, can you please say you cant
Tuesday, October 28, 2014 at 8:20pm

Please help
can you please look at Tevon Pitts's Biology Question please
Tuesday, October 28, 2014 at 7:53pm

Biology
What is the advantage of highly folded membranes in a cell? Name an organelle that uses this strategy?
Tuesday, October 28, 2014 at 7:44pm

Biology
What is the advantage of highly folded membranes in a cell? Name an organelle that uses this strategy.
Tuesday, October 28, 2014 at 7:15pm

biology
dont even know where to start You prepared a 10-fold dilution of a culture out to 10-9. You initially estimated there were between 3 x 108 cells/ml and 5 x 109 cells/ml in the original cell suspension. Which tube dilutions would you plate to ensure you captured significant ...
Monday, October 27, 2014 at 12:16am

biology
You carried out a 10-fold dilution series. You started with tube 0 which contained an overnight culture of E. coli. You estimated the original culture contained 6 x 108 cell/ml using McFarland nephlemeter standards. You plated 0.1 ml volumes of a number of the dilutions. Which...
Monday, October 27, 2014 at 12:15am

Biology
Compare ad contrast indirect versus direct values of biodiversity and provide two examples?
Friday, October 24, 2014 at 2:03pm

biology
what is contracting subunit of skeletal muscle called
Thursday, October 23, 2014 at 11:23pm

Biology
1. Mitochondria and chloroplasts reproduce the same way free-living bacteria do—by _____________. My answer: Binary fission. 2. The tropism that allows seedlings to find their way out of the soil and into the sunlight is _________________. My answer: Positive tropism. &...
Thursday, October 23, 2014 at 4:44pm

biology
Which characteristic of life is maintaining a stable internal environment. A)Reproducing B)Homeostasis C)Growing and developing D)Responding to stimuli
Thursday, October 23, 2014 at 12:18pm

biology
why meiosis is named as meiosis 1and2?
Thursday, October 23, 2014 at 11:21am

PSYCH/SOCIOLOGY!!!
Should I take psychology before sociology or take sociology before psychology. Like saying "You can't do well in chemistry unless you finish biology"
Wednesday, October 22, 2014 at 6:34pm

BIOLOGY
Which of the following is/are true about where electrons end up? The last molecule of the ETC in the mitochondrian donates electrons to water and releases oxygen The last molecule of the ETC in the mitochondrion donates electrons to oxygen and makes water NADH and FADH2 ...
Wednesday, October 22, 2014 at 2:04pm

BIOLOGY
Fermentation: (Select all that are true) Uses pyruvate to accept electrons Uses pyruvate to donate electrons Regenerates NADH Regenerates NAD+ Directly makes ATP Allows glycolysis to continue in the cytoplasm making ATP Allows oxidative phosphorylation to continue int he ...
Wednesday, October 22, 2014 at 2:01pm

Biology
A couple has a child with an autosomal recessive form of glycogen storage disease, a deficiency of a lysosomal enzyme. An enlarged liver and heart and weak muscles cause the baby to die from heart and lung failure at 20 months. Now the woman is pregnant again. Her doctor ...
Tuesday, October 21, 2014 at 9:55pm

Biology
Why is it important that cells produced after meiosis be diverse? My answer: Meiosis is involved it the formation of gametes, so if the cells produces were not different, then everyone would be identical. Is this correct? @Mrs. Sue? someone? Thank you! :)
Tuesday, October 21, 2014 at 12:59pm

Biology
Why can the identity of a compound not be determined by cutting out the spot on an autoradiogram and subjecting it to chemical analysis?
Tuesday, October 21, 2014 at 3:08am

Biology
List all the structures that every cell, regardless of type, must have.
Monday, October 20, 2014 at 9:01pm

Biology
If at noon today someone has 1 E. coli cell, in their gut/large intestine, and E. Coli does binary fission, in unison each thirty minutes, how many will one have in their gut at 11:55 A.M. tomorrow? (five minutes short of a whole day) I'm confused on how to begin setting ...
Monday, October 20, 2014 at 1:42am

Biology
For yogurt, draw a representative molecule of amino acids it contains.
Monday, October 20, 2014 at 1:38am

Biology
Yogurt contains fats, cholesterols, carbohydrates(fibre, sugar and starch) and protein. For each of the nutrients that this food contains: Explain how the molecule's structure fits it function?
Monday, October 20, 2014 at 1:35am

biology
Where is the location of the phosphatase enzyme in the digestive system. There is no site that i can find that can provide an answer...
Sunday, October 19, 2014 at 1:58pm

biology
explaination of the scientific interpretation of fossils found in the cradle of humankind
Sunday, October 19, 2014 at 9:23am

Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>

Post a New Question | Current Questions

Homework Help: Science

Search
Members