Biology Answers

How does lactose help to switch on the transcription of lac Z and lacY?

Justify the statement that "fossil records are incomplete".

The BSA standard solution with the concentration of 0.5 mg/mL was used to produce standard curve for protein assay based on Bradford method. The test tubes contain BSA solutions was prepared: 0, 20, 40, 60, 80, 100 μL. The reading of the absorbance for each test tube after adding the Bradford reagent was 0, 0.05, 0.09, 0.14, 0.19 and 0.22. If 20 μL of protein solution with unknown concentration were taken and mixed with 80 μL water. Then, 10 μL of this mixture was reacted with Bradford reagent and the absorbance reading was 0.08. What is unknown protein solution concentration before dilution?

Identify 5 environmental factors that may influence communication

Discuss 6 point that you need to consider in order to improve your communication

Name 4 transaction principles that are fundamental to the success of communication

discuss 10 tips of developing a more cofident and persuavive voice

list 4 broad categories of non-verbal communication

list 5 viewpoints that are helpful when examining communication and communication theory

what is active transport ?