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TLS Online TPP Program

#Question id: 34832

Which of the following are true regarding the development of dicot embryo?

#XL - R Botany
  1. Zygote divides asymmetrically into basal and terminal cells
  2. Hypophysis gives rise to root cap and parts of the root
  3. Suspensor connects the embryo to endosperm
  4. Cotyledons arise from the suspensor
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TLS Online TPP Program

#Question id: 35787

#XL - U Food Technology

Which structural feature is absent in Gram-negative bacteria but present in Gram-positive bacteria?
TLS Online TPP Program

#Question id: 35788

#XL - U Food Technology

The main purpose of performing a serial dilution in microbiology is to:
TLS Online TPP Program

#Question id: 35789

#XL - U Food Technology

In serial dilution, a 1 mL sample is added to 9 mL of diluent. What is the dilution factor?
TLS Online TPP Program

#Question id: 35790

#XL - U Food Technology

If a 10-5 dilution yields 150 colonies when 0.1 mL is plated, what is the original concentration (CFU/mL) of the sample?
TLS Online TPP Program

#Question id: 35791

#XL - U Food Technology

A 1 mL aliquot is serially diluted three times using a 1:10 dilution each time. What is the final dilution factor?
TLS Online TPP Program

#Question id: 35792

#XL - U Food Technology

You perform a serial dilution and plate 0.1 mL from the 10-4 dilution, obtaining 80 colonies. What is the CFU/mL in the original sample?