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Homework Help: Science: Biology

Recent Homework Questions About Biology

Biology
What is the energy of helium in its second excited state

biology
is c2h5 polar or non polar?

Biology
Explain the structure of a water molecule and how hydrogen bonding leads to some of its very special properties. Be sure to include how these properties are important to life on Earth

maths
In a class of 60 students, the number of students who passed biology is 6 more than the number who passed chemistry. Every student passed at least one of the two subjects and 8 students passed both subjects. I) how many students passed biology? ii) how many students passed ...

maths
In a class of 80 students, 53 study Art, 60 study Biology, 36 study Art and Biology, 34 study Art and Chemistry, 6 study Biology only and 18 study Biology but not Chemistry. Illustrate the information on a Venn diagram. Determine the number of students who study (I) Arts only...

biology/science
Oxygen attracts electrons more strongly than hydrogen does. What kind of bond forms between the two hydrogen atoms and single oxygen atom that form a water molecule? A. A metallic bond B. A hydrogen bond C. An ionic bond D. A polar bond Currently stuck here.

Biology
I would like some help if that is OK, like soon!:) 1.) A group of scientists proposes an idea that a chemical compound will enable bean plants to grow faster. They grow one group of bean plants in the presence of the compound and another group in the absence of the compound. ...

Biology
You begin with 10 ml of 2% acetic acid, and you add 90 ml of water. We will call the resulting solution "dilution#1". What is its concentration? You then repeat the dilution exactly, using 10ml of Dilution #1, adding 90 ml of water. We will call the resulting solution "...

Biology
three similar celery stalks are placed in solution of dye for 5 mins to examine diffusion in living cells. what are some possible sources of error? suggest improvements to the experimental design?

stats
Jason, a freshman at a local college, just completed 15 credit hours. His grade report is presented below. Course: Calculus, Biology, English, Music, P.E. Credit Hours 5, 4, 3, 2, 1 Grades C, A, D, B, A The local university uses a 4 point grading system, i.e., A = 4, B = 3, C...

Biology
A farmer sets up a buffalo farm in this ecosystem. Over time, the buffalo greatly reduce the grass biomass in the community. Explain how the introduction of this new species could affect the amount of energy transferred within the food chain.

Biology
why is protein folding important to enzyme activity?

Biology
why is protein folding important to enzyme activity?

Biology
why is protein folding important to enzyme activity?

biology
Both of the following processes represent what? A. A baker using yeast to make dough rise. B. Inserting human insulin genes into bacteria to make insulin for diabetics. biotechnology transgenic organisms genetic engineering all of the above

Cell Biology Help Please!
1) AMP -activated protein kinase (AMPK): Option A: is activated by both AMP and ADP. Option B: undergoes allosteric regulation. Option C: all of the choices are correct. Option D: adds phosphate groups to serines and threonines in other enzymes. 2) Which of the following ...

Biology
Which one of the following is NOT blood parasite? (A)plasmodium(B)trypanosoma(C)trichinell​a(D)L.donovani

biology
Which of the following is the definition of ecology? -the social movement with a goal to protect the environment -the recycling of human-made materials to reduce the waste going into landfills -the study of interactions among organisms and between organisms and their ...

Biology
Jacobie wanted to test the projectile motion of a pumpkin. His hypothesis was "if the pumpkin had a larger mass, then the higher he could throw it, because the larder pumpkins would have more force." He bought three orange pumpkins and test them all on the same day. His ...

physics
How do the laws of physics apply to others sciences such as biology chemistry and earth science? And give an example to show the connection.

9th Grade Biology
You set up 5 samples that contained a range of sucrase concentrations but the same amount of substrate (sucrose). - The pH was kept constant in all tubes buy using the same amount of buffer. - The temperature was kept constant in all tubes (room temp) - A negative control was...

9th Grade Biology
Sometimes, a new experimental result may seem to go against a well-established scientific theory. Often, such results seem like they are the results of researcher error. Regardless, scientists cannot just ignore new findings that disagree with accepted ideas. Which statement ...

9th Grade Biology
Cell theory is based on a series of discoveries. In 1655, Robert Hooke coined the word "cell" from his investigations of cork cells. Almost two hundred years later, Schleiden and Schwann proposed the cell theory that states that: All life forms are made from one or more cells...

Biology
What are the examples for dehydration synthesis and hydrolysis?

biology
1. Suppose you plant a seed and observe that a tree of large mass grows from it. The tree achieves a final mass that changes very little for years afterward. Which of the following is true about the tree? (1 point) Both anabolic and catabolic reactions took place in the seed ...

general biology
Describe how an organism broken down into smaller components?

biology
which of the following is consistent with the theory of vitalism ? A.all matter contains a vital force** b.the chemistry of life and nonlife are similar c. living things contain a vital force absent in nonliving things d. life must be sustsained through a series of chemical ...

AP Biology
I have the compound C20H24O2N2, A quinine molecule The Question: Calculate the molarity of 100.7g of quinine in 275 mL of water.

AP Biology
I have the compound C30H62, the candle The question is: When a candle is burned, 150.0 liters of O2 (g) is used up. How many grams of oxygen react?

biology
explain the following statement: "life is complex on the molecular level"

Biology
Explain the following statement: "life is complex on a molecular level. How is your environment different from the biosphere?

Biology
A biology student is studying ways to grow crops in soils that are high in salts and other dissolved solids. To determine whether corn plants can tolerate salty soil conditions, she grows one corn plant in typical non-salty soil and one corn plant in the same soil plus 0.5 ...

Biology Vocab
This is an error in measurement that can be caused by an imperfection in the equipment being used or from mistakes the experimenter makes while taking the measurement.

Biology Vocab
This is the degree at which a test measures what it is intended to measure. It a Vocab word but im not sure which one. Please help ASAP

Biology
What is the sample size in this experiment? How can you tell what the sample size is in this case? A team of researchers observed that the acorn density of the oak forests in New York fluctuates from year to year and that mice populations in the forest were increased when the ...

Biology
The question is exactly like this: The nurse is reviewing a client's blood ph level. which of the systems in the body regulate blood Ph? select all that apply A.buffers b.respiratory c.renal d.cardiac

biology
Which organelle(s) are likely to be involved in the reduced efficiency of amino acid recycling in wimpys liver cells?

biology
Color blindness is a defect in vision of colors, this defect is due to a localize-homologous segment of chromosome X. In the document I have a pedigree which the parents and their children are normal; but then most of the children got married to a diseased one which 50% ...

biology
1. how does the density of ice compare to that liquid water and why is that property important to aquatic oranisms a. the density of ice is higher than that liquid water, which means that ice forms from the bottom of lakes upward , protecting aquatic life in waterI b. the ...

biology
1. how does the density of ice compare to that liquid water and why is that property important to aquatic oranisms a. the density of ice is higher than that liquid water, which means that ice forms from the bottom of lakes upward , protecting aquatic life in waterI*** b. the ...

biology
how do electrons move

biology
which of the following is not a characteristic of life A. maintains homeostasis B. composed of cells C. composed of atoms D. carries out metabolism which of the following must be true to consider something to be alive? A. it must be able to replicate it's DNA B. it must be ...

biology
which of the following is not a characteristic of life A. maintains homeostasis B. composed of cells C. composed of atoms D. carries out metabolism which of the following must be true to consider something to be alive? A. it must be able to replicate it's DNA B. it must be ...

biology
In a cross between a white-eyed female fruit fly and red-eyed male, what percent of the female offspring will have white eyes? (White eyes are X-linked, recessive)

biology
Could a man with type B blood and a woman with type AB blood produce a child with type O blood? Explain

biology
Albinism (lack of pigment) is caused by a recessive allele in humans. If normal parents have an albino child, what is the probability that their next child will be normal for pigment?

Biology
why is water vital to maintaining a constant internal environment? A. It is cohesive* B. It is adhesive C. It is a good solvent D. It has a high specific heat

Biology
How are cohesion and adhesion of water ar linked to photosynthesis

Biology
Which of the following properties of water would be most important in protecting a fish in a shallow pond on a hot summer day? A. the low density of water in the solid phase B. water's strong forces of adhesion C. the high specific heat of water D. water's solvent properties ...

biology
: How are cohesion and adhesion properties of water linked to photosynthesis

Biology
How are cohesion and adhesion properties of water linked to photosynthesis

Biology
1. Which of the following is not a characteristic of life? A. maintains homeostasis *** B. composed of cells C. composed of atoms D. carries out metabolism 2. Which of the following must be true to consider something to be alive? A. It must be able to replicate its DNA. B. It ...

biology
Discuss physiologically the importance of human tissues

biology
Discuss morphologycally the human tissues

biology
How are cohesion and adhesion properties of water linked to photosynthesis?

AP Biology
What are the phenotypes of the long-nosed cusimanse? I can't find any site about their body structure or function either.

biology assignment
How are cohesion and adhesion properties of water linked to photosynthesis

biology
Which of the following properties of water would be most important in protecting a fish in a shallow pond on a hot summer day? the low density of water in the solid phase water's strong forces of adhesion water's high specific heat water's solvent properties

Biology assignment
How are cohesion and adhesion properties of water linked to photosynthesis

Science (Biology)
In a species of rodent, fur colour may be black or brown and their tail length either long or short. A pair of rodents were crossed, and their progeny then allowed to interbreed. The result in the F2 were as follows: 29 with brown fur with long tails; 9 long tailed with black ...

Math
In a group of 500 students, 150 are studying physics, 220 are studying biology, and 100 are studying chemistry. At least 25 students are studying more than one of these sciences. What is the greatest possible number of these students that might NOT be studying any of these ...

biology
Give two reasons why the pressure decreases as blood flows along the capillary bed.

Biology
1. When and where was the first cell born? How did it happen? 2. What are the circumstances that make the appearance of the cell in this earth? 3. What are the differences between prokaryotic and eukaryotic cell? How about plant and animal cell?

Biology
A tabacoo plant hetrozygous for recessive trait of albunism is selfed and 1200 seeds are ontained. How many seedlings obtained from such seeds will have prevent genotype. 1) 900 2) 300 3) 600 4) 1200

Biology
Four different molecules are shown below. For each, indicate if it would be found in region A, B, C, and D. An image of the structure of glucose. Molecule Found in Region A Found in Region B Found in Region C Found in Region D An image of the structure of benzene. Molecule ...

Biology
how to maintain the qualities of water ?

Biology
If two samples of DNA are different concentrations and I was to add them, I do need to divide by the total volume, right?

biology
A man with brown eyes and dark hairs (whose father was blue eyed),marries a woman with blue eyes and blue curly hairs (whose mother was red straight hair). They have 4 children. What is the genotype of children 1)BbRR:BbRr:bbrr:bbRR 2)BbRR:BbRr:bbRr:bbRR 3)BbRr:BbRr:BbRR:bbrr ...

Biology
To a curly haired mother and straight haired father 8 children are born. The ratio of curly and straight haired will be 1) 6:2 2) 4:4 3) 2:6 4) 3:5

biology
31. A student conducts an investigation in which she dissolves 1 gram (g) each of several substances in 50 milliliters (ml) of water. She has 12 identical plastic cups of water. She places 1 g of salt in three cups, 1 g of sugar in three cups, and 1 g of baking soda in three ...

Biology
* what do organisms needs ? * how do organism secure what they needs ? * what are the attributes of life ?

Biology
If one of your skin cells divides, how many chromosomes will be found in the daughter cells? Number of chromosomes a human cell has before and after mitosis?

Biology Help Please!
1) Which tube will be most 'yellow' at the end of the experiment? ( For Enzyme Kinetics Experiment) a) Substrate Concentration: 0.006M (my answer) Inhibitor: absent b) Substrate Concentration: 0.006M Inhibitor: un-competitive inhibitor present c) Substrate Concentration: 0....

Biology Help Please!
1) Which tube will be most 'yellow' at the end of the experiment? a)Substrate Concentration: 0.006M Inhibitor: absent b)Substrate Concentration: 0.006M Inhibitor: un-competitive inhibitor present c) Substrate Concentration: 0.0005M Inhibitor: un-competitive inhibitor present d...

Biology
What is the actual storage of energy in the muscles? ATP or Glycogen?

Biology Help Please!
Bacterial Gene Transfer - Conjugation Please Clarify These Questions For Me! 1) Explain the purpose of the controls used in the mating experiment 2) It is necessary to make dilutions prior to plating in Week 1 in order to obtain single colonies. Why are single colonies ...

biology
chemical reaction involve changes in bonds between atoms. true or false

Biology
Uable to find correct answer: In general it is expected_____________ A) hydrostatic pressure will remain constant throughout the capillary bed B) osmotic pressure will be higher in the arteriole end of the capillary bed compared to the venous end C) osmotic pressure will be ...

Math
In a class of 100 students, 40 offer Biology and 10 offer Chemistry and Biology .10 offer Physics and Chemistry , and 30 offer Physic and Biology . Each student offer at least one of the three subjects. The number of students who offer Biology is equal to those who offer ...

biology
A student wants to design an experiment to demonstrate the effects of acid rain on plant life. Which of the following substances should be combined with water to best simulate acid rain? A. Vinegar B. Table salt C. Baking soda D. Ammonia

biology
what is the habitat,observable features,economic importance,scientific name,behavioural adaptation,mode of feeding and other necessary details of a cricket.

plzzz help immediately biology
what is cohabitation

English
1. He is absorbed in biology. 2. He is very interested in biology. 3. He is into biology. ----------------- Are they all the same in meaning?

Biology
If a man has cystic fibrosis and his wife is a carrier of the gene, what is the likehood of their offspring having the disease ? Use a punnet square to justify your answer

Biology
Outline the process of sampling along a transect

Biology
If a man has cystic fibrosis and his wife is a carrier of the gene, what is the likehood of their offspring having the disease? Use a punnet square to justify your answer

biology
magnification of simple microscope

Biology - Diversity
A scenario where bacteria will undergo sexually reproduction instead of taking the "safe route" and reproducing asexually. I know that they reproduce sexually when conditions are not favorable and will enter a dorment stage until conditions get better but what scenario would ...

Biology
In the microscope activity, you viewed some of the same specimens under multiple microscopes. Describe the differences in what you could see under each microscope. Which microscope would view small specimens the best and why?

Biology Help Please!
1) You are going to make 1800ml of a 25uM solution using a compound whose MW= 60.06 Daltons. How many grams do you need of this compound? Give your answer with four decimal places. 2) You are going to make 300ml of a 75mM solution using a compound whose MW=818 g/mole. How many...

biology
take an apricot , a walnut , few raisins square peice of spinach ,shelled egg and deshelled egg. prepare four solutions A,B,C and D.solution A is a10% solution of suger ,solution B is 80%suger solution ,solution C is10% salt solution and solutionD is80%salt solution In ...

Science (Biology)
Use your knowledge of photosynthesis to explain what is happening in the following graphs. 67(dot)media(dot)tumblr(dot)com /d99a0dd856c87dfc21b9314f89019994/tumblr​_o7ltp1unLS1tt1il6o1_1280.jpg

Biology
1. All fungi are ~photosynthetic ~heterotrophic ~autotropic ~parasitic 2. What structure is missing in the fungal hypae shown on the right side of Figure 21-5? ~cell walls ~cross walls ~nuclei ~cytoplasm 3. Which of the following is true of fungi? ~Like plants, they carry out ...

mathematics
If 45 percent of the students of a class have offered mathematics and 85 percent of them biology, find the percentage of students who offered biology only?

Biology
One of the differences between Cambrian animals and pre-Cambrian animals was the appearance of ___________ such as antennae as Cambrian animals evolved. Can somebody help me I literally have no clue.

MATH
The FritzHugh-Nagomo equation occurs in many apps such as biology, genetics and heat transfer. In the 1-D case, it can be written as du/dt = d^2/dx^2 + u(u-1)(λ-u) where λ is constant. Show that this eqn supports a travelling wave u(x,t) =(Ae^n1 + λBe^n2)/(Ae^n1...

Math
At small town high there are 100 students,each of whom takes atleast one of Biology,Chemistry,or physics.There are 50 student in Biology,60 in chemistry,and 70 in Physics.If 24 students are enrolled in exactly two of the classes,how many students are in all three?

biology
what is the mode of nutrition,habitat, economic importance, classifications scientific name, observable features and adaptation of an earthworm.

Biology
1. All fungi are ~photosynthetic ~heterotrophic ~autotropic ~parasitic 2. What structure is missing in the fungal hypae shown on the right side of Figure 21-5? ~cell walls ~cross walls ~nuclei ~cytoplasm 3. Which of the following is true of fungi? ~Like plants, they carry out ...

Spanish
What are schools and organizations in silicon valley doing to foster growth for hispanic and latino students? a. Offering math programs in the summer b. Offering english classes year round C.offering tutoring classes in science during the weekends d. offering writing classes ...

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Homework Help: Science

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