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TLS Online TPP Program

#Question id: 11041

Which of the following segments of the circulatory system has the highest velocity of blood flow?

#Unit 7. System Physiology – Animal
  1. Aorta
  2. Arteries
  3. Capillaries
  4. Venules
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TLS Online TPP Program

#Question id: 12532

#Unit 6. System Physiology – Plant

In Arabidopsis some brassinosteroid mutants given below;
a) 3-week-old light-grown homozygous bri1 mutant shown a severe dwarf plant while heterozygous bri1 mutant exhibits wild-type morphology
b) 3-week-old light-grown homozygous cpd (constitutive photomorphogenisis and dwarfism) mutant exhibits a wild-type phenotype while heterozygous mutant shown a dwarf phenotype
c) The dark-grown det2 mutant has short, thick hypocotyls and expanded cotyledons while the dark-grown wild type has long, thin hypocotyl 
d) The dark-grown det2 mutant has exhibits a wild-type phenotype
Which of the following given mutants of brassinosteroid is correct?
TLS Online TPP Program

#Question id: 5609

#Unit 5. Developmental Biology

Just before sperm addition, sea urchin eggs are microinjected with a calcium chelator. What event will most likely not takes place after fertilization?
TLS Online TPP Program

#Question id: 2822

#Unit 2. Cellular Organization

Transposition by a bacterial insertion element

a. occurs at a frequency of approximately 1 in 10^3 cells per generation.

b. can inactivate an essential gene.    

c. is mediated through a RNA intermediate.

d. requires the enzyme transposase
TLS Online TPP Program

#Question id: 148

#Unit 1. Molecules and their Interaction Relevant to Biology

The pKa of a certain weak acid is 4.0. Calculate the ratio of proton acceptor to proton donor at pH 7.0.
TLS Online TPP Program

#Question id: 7312

#Unit 5. Developmental Biology

Following statements regarding to the classes of genes that regulate floral development:

A.  Floral organ identity genes directly control floral identity. The proteins encoded by these genes are transcription factors that likely control the expression of other genes whose products are involved in the formation and/or function of floral organs.

B.  Cadastral genes act as spatial regulators of the floral organ identity genes by setting boundaries for their expression.

C.   Meristem identity genes are necessary for the initial induction of the organ identity genes. These genes are the positive regulators of floral organ identity.

D.  Cadastral genes act as negative regulators of the floral organ identity genes by inhibits their expression.

E.   Meristem identity genes are the negative regulators of floral organ identity genes.

Which of the above statements are true?