Sunday
December 4, 2016

Homework Help: Science: Biology

Recent Homework Questions About Biology

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 ...
Tuesday, September 6, 2016 by Mellisa B

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 ...
Tuesday, September 6, 2016 by Mellisa B

Biology
What are the examples for dehydration synthesis and hydrolysis?
Sunday, September 4, 2016 by Stephen Curry

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 ...
Friday, September 2, 2016 by 9th grader

general biology
Describe how an organism broken down into smaller components?
Friday, September 2, 2016 by may

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 ...
Thursday, September 1, 2016 by 9th grader

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.
Thursday, September 1, 2016 by Marcelo

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?
Wednesday, August 31, 2016 by Marcelo

biology
explain the following statement: "life is complex on the molecular level"
Wednesday, August 31, 2016 by Bob

Biology
Explain the following statement: "life is complex on a molecular level. How is your environment different from the biosphere?
Wednesday, August 31, 2016 by Steve

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 ...
Wednesday, August 31, 2016 by Mellisa B

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.
Wednesday, August 31, 2016 by Mellisa B

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
Wednesday, August 31, 2016 by Mellisa B

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 ...
Tuesday, August 30, 2016 by Jamie

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
Tuesday, August 30, 2016 by Bia

biology
Which organelle(s) are likely to be involved in the reduced efficiency of amino acid recycling in wimpys liver cells?
Thursday, August 25, 2016 by Sarah

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% ...
Thursday, August 25, 2016 by maria

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 ...
Tuesday, August 23, 2016 by 9th grader

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 ...
Tuesday, August 23, 2016 by 9th grader

biology
how do electrons move
Monday, August 22, 2016 by mpofu

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...
Wednesday, August 17, 2016 by leslie

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...
Wednesday, August 17, 2016 by leslie

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)
Wednesday, August 17, 2016 by sami

biology
Could a man with type B blood and a woman with type AB blood produce a child with type O blood? Explain
Wednesday, August 17, 2016 by sami

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?
Wednesday, August 17, 2016 by sami

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
Tuesday, August 16, 2016 by Shun

Biology
How are cohesion and adhesion of water ar linked to photosynthesis
Tuesday, August 16, 2016 by Henry

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 ...
Monday, August 15, 2016 by Amber

biology
: How are cohesion and adhesion properties of water linked to photosynthesis
Saturday, August 13, 2016 by Nchimunya

Biology
How are cohesion and adhesion properties of water linked to photosynthesis
Friday, August 12, 2016 by Tabo

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 ...
Wednesday, August 10, 2016 by Amber

biology
Discuss physiologically the importance of human tissues
Monday, August 8, 2016 by lyn aliƱabon

biology
Discuss morphologycally the human tissues
Monday, August 8, 2016 by lyn aliƱabon

biology
How are cohesion and adhesion properties of water linked to photosynthesis?
Sunday, August 7, 2016 by harold

AP Biology
What are the phenotypes of the long-nosed cusimanse? I can't find any site about their body structure or function either.
Saturday, August 6, 2016 by Annie

biology assignment
How are cohesion and adhesion properties of water linked to photosynthesis
Thursday, August 4, 2016 by Roberta

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
Thursday, August 4, 2016 by Nyanka

Biology assignment
How are cohesion and adhesion properties of water linked to photosynthesis
Thursday, August 4, 2016 by Namuyaba

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 ...
Saturday, July 30, 2016 by Khalid

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 ...
Wednesday, July 20, 2016 by Anonymous

biology
Give two reasons why the pressure decreases as blood flows along the capillary bed.
Saturday, July 16, 2016 by Scarleter

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?
Sunday, July 3, 2016 by mike

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
Sunday, July 3, 2016 by sanjana

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 ...
Thursday, June 30, 2016 by Antonio

Biology
how to maintain the qualities of water ?
Wednesday, June 29, 2016 by luna

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?
Monday, June 27, 2016 by Anonymous2.0

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 ...
Monday, June 27, 2016 by sonia

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
Sunday, June 26, 2016 by Sanjana

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 ...
Saturday, June 25, 2016 by Anonymous

Biology
* what do organisms needs ? * how do organism secure what they needs ? * what are the attributes of life ?
Thursday, June 23, 2016 by macy

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?
Monday, June 20, 2016 by Science

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 ...
Sunday, June 19, 2016 by Kimberly

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 ...
Saturday, June 18, 2016 by Kimberly

Biology
What is the actual storage of energy in the muscles? ATP or Glycogen?
Saturday, June 18, 2016 by Asmaa khalaf

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 ...
Wednesday, June 15, 2016 by Tim

biology
chemical reaction involve changes in bonds between atoms. true or false
Friday, June 10, 2016 by shun

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 ...
Friday, June 10, 2016 by Mary

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 ...
Thursday, June 9, 2016 by Delson

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
Sunday, June 5, 2016 by Anonymous

biology
what is the habitat,observable features,economic importance,scientific name,behavioural adaptation,mode of feeding and other necessary details of a cricket.
Saturday, June 4, 2016 by C A C WORLDWIDE

plzzz help immediately biology
what is cohabitation
Friday, June 3, 2016 by cutiepieeee

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?
Monday, May 30, 2016 by rfvv

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
Monday, May 30, 2016 by Hafsah

Biology
Outline the process of sampling along a transect
Sunday, May 29, 2016 by Hafsah

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
Sunday, May 29, 2016 by Hafsah

biology
magnification of simple microscope
Sunday, May 29, 2016 by kumkum

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 ...
Thursday, May 26, 2016 by Undefined

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?
Thursday, May 26, 2016 by Anonymous

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...
Thursday, May 26, 2016 by Tenshi

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 ...
Tuesday, May 24, 2016 by kumkum

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
Sunday, May 22, 2016 by Michlle

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 ...
Saturday, May 21, 2016 by Harley

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?
Saturday, May 21, 2016 by Anonymous

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.
Thursday, May 19, 2016 by Help!

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...
Thursday, May 19, 2016 by Mr Maverick

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?
Thursday, May 19, 2016 by Luiz

biology
what is the mode of nutrition,habitat, economic importance, classifications scientific name, observable features and adaptation of an earthworm.
Wednesday, May 18, 2016 by Wesley

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 ...
Wednesday, May 18, 2016 by Becky

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 ...
Wednesday, May 18, 2016 by Girltt

biology
Cross two plants that are both heterozygous for pod color. What fraction of the offspring will be dominant?
Tuesday, May 17, 2016 by Berta

biology
Cross a constricted plant with a heterozygous plant. What fraction of the offspring will be homozygous?
Tuesday, May 17, 2016 by Berta

Biology
Reasons on why a person that has been sunbathing all day eats a salt tablet
Tuesday, May 17, 2016 by Shreeya

Biology
Describe the traits that distinguish animals from other organisms Explain the diversity of invertebrates, chordates, and primates using the theory of evolution Describe the structures and body systems of animals that allow them to maintain homeostasis Describe the structures ...
Monday, May 16, 2016 by lola

Biology
1. What are protists? (1 point) prokaryotes that are part of domain Archaea eukaryotes that are not part of the plant, animal, or fungi kingdoms single-celled organisms that belong to the plant, animal, and fungi kingdoms single-celled eukaryotes that are part of the plant and...
Monday, May 16, 2016 by Becky

Biology
To move, nonmotile protists depend on? ~Air or water currents and other organisms. ~Cytoplasmic projections. ~Cilia and flagella ~Microtubules
Monday, May 16, 2016 by Becky

Biology
Identify the Protist and explain why you think it is what you said. We took dead leaves from outside, put them in boiling water then looked at them a week later. Link to image below! LINK: postimg. org/image/gu1201se9
Friday, May 13, 2016 by Jen

Biology
Identify the Protist and explain why you think it is what you said. We took dead leaves from outside, put them in boiling water then looked at them a week later. Link to image below! LINK: postimg. org/image/gu1201se9/
Friday, May 13, 2016 by Jen

Biology
Why do you think biologists use both the embryological development and the adult body plans to classify an animal? My answer: Biologists use both because there are many different phyla in the adult body plans. The embryological development help differentiate the classification...
Wednesday, May 11, 2016 by SkatingDJ

Biology
1aOrder the following steps of microscope use. A. Observe the specimen under low power; resolve with the fine adjustment. B. Raise the stage; observe under scanning power; focus with coarse adjustment; resolve with fine adjustment. C. Observe the specimen under high power dry...
Wednesday, May 11, 2016 by Anonymous

Math/Biology
8c) The scanning objective lens (4x) of a microscope has a diameter of field of 6.0 mm and a total magnification of 40x. The high power objective lens has a total magnification of 400x. Estimate the diameter of field of view of the high-power objective lens by using the ...
Wednesday, May 11, 2016 by Anonymous

Biology - Help!
Based on your knowledge of eukaryotic gene regulation, what series of events would explain the generation of the "pre-activated" state for the full set of B-globin like genes (epsilon, gamma, delta, and beta) in the earliest embryo?
Monday, May 9, 2016 by Jerry

Biology/science
How is creating a virtual ecosystem similar and different from the real world?
Friday, May 6, 2016 by Damien

Biology)
How is creating a virtual ecosystem similar and different from the real world?
Friday, May 6, 2016 by Lars

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

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Homework Help: Science