4,064 Answered Questions for the topic biology

06/02/21

Please help me with this case study
An 80 year old woman is living in LTC. Hx of hypertension, had a recent fall and had a total hip replacement. Postoperative pain is high, therefore she was discharged with a prescription for... more
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06/02/21

Please help me answer this case study
An 80 year old woman is living in LTC. Hx of hypertension, had a recent fall and had a total hip replacement. Postoperative pain is high, therefore she was discharged with a prescription for... more
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06/02/21

URGENT: Please help me answer this honors chemistry solubility question.

If 10 grams of potassium chlorate were dissolved in 100 g of water at 70 degrees, how many more grams could be added until the solution was saturated?
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Biology

06/01/21

Biology- genes unit
Why does meiosis need two nuclear divisions to produce four haploid cells from a single diploid nucleus? 
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06/01/21

What is the white and gray matter in the brain really made of?
Hi, I'm really interested in neurology and neuroanatomy and I was confused about white and gray matter in the brain. White matter is myelinated axons and gray matter is somas, but doesn't each... more
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06/01/21

How do you make a culture suspension of a fungal colony that does not release spores?
I am a student researcher studying about R. solani and it is known to not produce any spores and only mycelia/sclerotia. I need to produce a culture suspension of the said fungi to be able to... more
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06/01/21

please help me with honors chem molarity question
Sodium chlorate is used as an oxidizer in the manufacture of dyes, explosives and matches. Calculate the mass of solute needed to prepare 1.575 L of 0.00250 M NaClO3 (ℳ = 106.45 g/mol).A. 419 gB.... more
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06/01/21

please help me with honors chem molarity question
Lithium hydroxide is used in alkaline batteries. Calculate the molarity of a solution prepared by dissolving 1.495 moles of LiOH in enough water to give a final volume of 750. mL.A. 0.502 MB.... more
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06/01/21

please help me with honors chem molarity question
How many grams of NaH2PO4 are needed to react with 33.29 mL of 0.285 M NaOH?NaH2PO4(s) + 2 NaOH(aq)  Na3PO4(aq) + 2 H2O(l)------------------------------- g
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06/01/21

please help me with honors chem molarity question

How many milliliters of 0.55 M HCl are needed to react with 6.3 g of CaCO3?2 HCl(aq) + CaCO3(s)  CaCl2(aq) + CO2(g) + H2O(l)-------------------- mL
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06/01/21

please help me with honors chem molarity
Calculate each of the following quantities.(a) grams of solute in 164.8 mL of 0.207 M calcium acetate  ---------------g(b) molarity of 584 mL solution containing 21.1 g of potassium... more
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06/01/21

Lateral Gene Transfer and the Annealing Model of the Universal Ancestor
Article: https://www.pnas.org/content/pnas/95/12/6854.full.pdfThe author proposes that lateral gene transfer can explain some of the evidence that is discordant with the traditional universal... more
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05/30/21

what happens to mitochondrial respiration when there is an increase in permeability of the inner mitochondrial membrane to protons
What would happen to the mitochondrial proton gradient, mitochondrial respiration (mitochondrial oxygen consumption), and the NADH oxidation rate in cells treated with carbonyl... more
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Biology

05/30/21

Regardless of which kingdom an organism is in, all living organisms are made from the same four nitrogenous bases.
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Biology

05/28/21

Biology Lab Homework
Hi, I’m struggling with my Biology Laboratory Homework, Can you help me in answering it? this is the link of the... more
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05/28/21

please help me with this honors chemistry problem about solutions
Which aqueous solution of the following substances does not conduct an electric current?A. potassium hydroxideB. hydrogen bromide   C.  cesium iodideD. glucose, C6H12O6
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05/28/21

please help me with this chemistry solutions problem

Which of the following solutions will be the best conductor of electrical current?A. ethylene glycol, C2H6O2(aq)B. potassium chloride, KCl(aq)     C. methyl alcohol, CH3OH(aq)D. bromine, Br2(aq)E.... more
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05/28/21

please answer this solutions problem in honors chemistry

In some cases, the force of the attraction between the ions is so strong that it cannot be overcome by the interaction of the ions with the water molecules.A. trueB. false   
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05/28/21

please hep with this honors chemistry solutions problem
A solution component present in lesser quantity than the solvent is called a(n)A. soluteB. mixture    C. diluentD. alloy.
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05/28/21

please help me with this chemistry solutions problem
A solid solution of zinc in copper is an example of a(n)A. soluteB. solvent    C. alloyD. heterogeneous mixture.
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05/28/21

please help me with honors chemistry solutions question
How many moles of ions are released when 0.27 mol of cobalt(II) chloride, CoCl2, is dissolved in water?A. 0.18 molB. 0.81 mol     C. 0.27 molD. 0.090 molE. 0.54 mol
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05/28/21

please help me with this solutions problem for honors chemistry
Which of the following solutions will be the poorest conductor of electrical current?A. sulfuric acid, H2SO4(aq)B. lithium hydroxide, LiOH(aq)     C. sodium chloride, NaCl(aq)D. potassium nitrate,... more
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05/28/21

Please help with honors chemistry solutions problem
Which must be present in an aqueous solution for it to conduct an electric current?a. acidb. base    c. ionsd. molecules
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Biology Microbiology

05/27/21

Preparation of Culture Media And Aseptic Techniques
In preparing the culture media, what is the significance of the following?1. Soaking the container in bleach2. Keeping the container closed except when pouring the medium; partially opening the... more
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Biology Genetics

05/27/21

Dihybrid Inheritance Question below
A species of bird is threatened with extinction because its habitat is being destroyed by deforestation. As a research ecologist, you have been chosen to ensure the genetic diversity of the... more
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