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TLS Online TPP Program

#Question id: 163

Which of the following statements about cystine is correct?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. Cystine forms when the —CH2—SH R group is oxidized to form a —CH2—S—S—CH2— disulfide bridge between two cysteines.

  2. Cystine is an example of a nonstandard amino acid, derived by linking two standard amino acids.

  3. Cystine is formed by the oxidation of the carboxylic acid group on cysteine.

  4. Cystine is formed through a peptide linkage between two cysteines.

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TLS Online TPP Program

#Question id: 3701

#Unit 3. Fundamental Processes

Frederick Griffith accidentally discovered transformation when attempting to develop a vaccine for pneumonia. He injected mice with samples from S-strain (virulent) and/or R-strain (nonvirulent) pneumococci bacteria (Streptococcus pneumoniae). Which of the following results is NOT consistent with Griffith's experiments?
TLS Online TPP Program

#Question id: 2483

#Unit 2. Cellular Organization

MAP2 and Tau are examples of microtubule:
TLS Online TPP Program

#Question id: 10870

#Unit 10. Ecological Principles

Which of the following best describes the relationship between a tick and a dog?
TLS Online TPP Program

#Question id: 23227

#Unit 2. Cellular Organization

_________in cytoplasm are responsible for the rod and helical cell shapes of bacteria.
TLS Online TPP Program

#Question id: 14850

#Unit 13. Methods in Biology

A bag contains 2 white and 3 black balls. A ball is drawn 5 times, each being replaced before another is drawn. Find the probability that exactly 4 of the balls drawn are white.