1. Based on the human variation, why do most people misunderstand the concept of "race"? Instead of using the concept of race to describe human variation, what would be a better explanation for human diversity?

2. What can we learn about the falsehoods of race as a biological concept? How this should be taught in schools?

Recent days the organization started to invest in human resource of the organization due to change organization perception about human resource management.                                       

1. Explain the reasons of this change in the value of human resource?

2.As an HR specialist explain how these change in perception affects organization’s work force and support your answer with a proper example

Chastain Corporation is trying to determine the effect of its inventory turnover ratio and days sales outstanding (DSO) on its cash conversion cycle. Chastain's 2016 sales (all on credit) were $158000; its cost of goods sold is 80% of sales; and it earned a net profit of 4%, or $6320. It turned over its inventory 5 times during the year, and its DSO was 33.5 days. The firm had fixed assets totaling $49000. Chastain's payables deferral period is 45 days. Assume 365 days in year for your calculations.

Calculate Chastain's cash conversion cycle. Round your answer to two decimal places. Do not round intermediate calculations.

____days

Assuming Chastain holds negligible amounts of cash and marketable securities, calculate its total assets turnover and ROA. Round your answers to two decimal places. Do not round intermediate calculations.

Suppose Chastain's managers believe that the inventory turnover can be raised to 9.5 times. What would Chastain's cash conversion cycle, total assets turnover, and ROA have been if the inventory turnover had been 9.5 for 2016? Round your answers to two decimal places. Do not round intermediate calculations.

What evidence supports the theory of endosymbiosis?

Does diffusion happen faster in a membrane rich in saturated or unsaturated fatty acids? Why?

Diffusion may occur via simple movement across the membrane or via carrier proteins. Furthermore, various types of carrier proteins may be involved. Why the need for more than one mechanism?

In this lab, we will titrate NaOH into Binegar (acetic acid) to determine its concentration.

These are the principle questions:

- What is the reaction that occurs in this titration?

- What does a titration measure, and how does it measure this quantity?

- What is a titration curve? How would it differ for diprotic of triprotic acids?

- What is an equivalence point?

- How do you select an indicator?

A nitric acid solution, pH=2.7, results from NO_x removal from a stack gas. Neglect ionic strength effects and the temperature is 25^oC. How much Na₂CO_{3 must be added to neutralize this solution prior to discharge? (the final pH=8.3. Assume that no weak acids are present in the scrubber water.) What is the buffer intensity of the final solution?}

1. You have a liquid sample that contains intact phage particles and ruptured bacterial cells.

a. Where would you expect to find DNA in this sample?

b. How can you treat this sample so that at the end of your work you will maximize the yield of phage genome and minimize the yield of potential interfering nucleic acids?

Explain why the pH scale is a convenient tool to measure the acidity or basicity of a substance.

The definition for acids and bases provided in the introduction to this experiment is called theBronsted-Lowry formulation. Another formulation, that of Arrhenius, defines an acid as a speciesthat supplies H+ to solution and a base as something that supplies OH- to solution. Whichexplanation is more inclusive than the other, and why?

Using the data in the table, which of the conjugate acids below is the strongest acid?

Base /////// Kb
NH3 1.8 x 10-5
C5H5N 1.7 x 10-5
H2NOH 1.1 x 10-8
NH2CH3 4.4 x 10-4

A) C5H5NH  
B) NH4  
C) H3NOH  
D) NH3CH3  
E) NH4 and NH3CH3

Find the pH of each of the following mixtures of acids.

1.5×10−2 molL−1 in HBr and 1.0×10−2 molL−1 in HClO4

8.5×10−2 molL−1 in HF and 0.220 molL−1 in C6H5OH

0.110 molL−1 in formic acid and 5.5×10−2 molL−1 in hypochlorous acid