12/12/20

Serial dilution/dilution factor problem

How would you prepare a 10-2 and 10-4 dilutions if you are provided with 2 saline tubes each containing 4.95ml saline and a tube of undiluted culture.What is the initial concentration of undiluted... more

09/26/20

how are membranes involved in compartmentalization?

09/15/20

EMERGENCY HELP NEEDED PLZZZZ

______ emerged from traditions including Greco-Roman philosophy.A cell theoryB biological sciencesC molecular biology______ was recognized as a professional scientific discipline by the nineteenth... more

09/14/20

Quick Biology Multiple Choice

1. What is homeostasis? a. The process in which internal conditions are kept within a tolerable range b. The process in which the internal conditions are kept constant c. The process in which the... more

09/06/20

Which of the following RNA sequences would be transcribed from the DNA sequence ATGCCTAGGAC?

The multiple choices for this question are: TACGGATCCTG UAGCGAUCCUG AUGCCUAGGAC GUCCUAGGCAU GCAUUCGAAGU (I copied the question exactly as it is.)(I picked choice 2 because it is the closest to what... more

Biology disinfectant Question

Which of the following is considered a high level disinfectant that would inactivate biological spores?A. 95% ethanolB. Quaternary ammonium disinfectantC. 10% household bleach in water soluntionD.... more

09/01/20

need help on answering this question

What questions would you ask to establish whether or not it is lawful to sell needles to this person? 

08/31/20

create a dominant repressor of INO1 and other inositol regulatory genes?

Describe a mutation to the Opi1 transcription factor or another gene that will create a dominant repressor of INO1 and other inositol regulatory genes? How would you test the resulting mutant to... more

08/31/20

mutation to the Opi1 transcription factor

Describe a mutation to the Opi1 transcription factor or another gene that will create a dominant repressor of INO1 and other inositol regulatory genes? How would you test the resulting mutant to... more

08/30/20

Data and Analysis (Biology)

A scientist wants to test the effect of different sugars on the growth of yeast (yeast like to feed on sugar). They want to see if coconut sugar is better or worse than plain table sucrose (normal... more

08/28/20

Describe vitalism. Describe what scientists now think about the basis of life and why they rejected the theory of vitalism.

The theory of vitalism has been rejected by present-day scientists. Describe vitalism. Describe what scientists now think about the basis of life and why they rejected the theory of vitalism.

08/28/20

I need help with systems of equations

What is the solution for z in the following system of equations? (Record only the numerical value of your answer)

08/26/20

An important element of Darwin’s second postulate about variation is that

A. Species vary B. The environment varies C. Individuals vary D. Reproduction varies E. Variation can be limited 

08/26/20

Natural selection leads to evolution by

Changing how individuals look during their lifetimes Promoting competition between different species The survival of the fittest  Live and let live  Preserving favorable traits in populations that... more

08/26/20

You have been offered two different jobs. Job A would pay you $12 an hour but a bonus at the end of the month of $100. Job B would pay you $16 an hour but would have no bonus offered.

a)                  Write an equation that represents the pay for each job offer.b)                 Graph the system of equations by hand on a coordinate grid. C)Circle the intersection points and... more

08/23/20

How do you find the area if only given a ratio and the width of a rectangle

The width of a rectangle is 12 inches. The width to height ratio is 16:9. How do you find the area?

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