Answer the following questions true (T) or false (F)
1. Both agglutination and ELISA procedures may be used to detect the presences of either viral antigen or the patient's antibodies to a virus.
2. Antiviral drugs exist that target all stages of viral replication except the production of viral nucleic acids.
3. Bacterial spore formation is a type of sexual reproduction.
1. TRUE
2. FALSE
3. FALSE
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Mass is the measurement of
(a) a line, extending from one point to another. (b) the space an object occupies. (c) the quantity of matter present in an object. (d) the degree of hot or cold of an object.
DNA replaced RNA as the main information
molecule probably because a. DNA contains thymine and RNA does not. b. DNA is double stranded and breaks less easily. c. DNA can store more protein-building instructions in less space. d. RNA is highly unstable. e. two of these are correct
Which of the following is NOT one of the factors
contributing to the high cost of sexual reproduction? a. development and maintenance of specialized reproductive structures b. formation and nourishment of gametes c. maintaining reproductive timing mechanisms d. maintaining body cells e. protection and nourishment of offspring
An organic molecule with the empirical formula C6H12O6
A. may have many structural formulae. B. is a carbohydrate. C. is commonly referred to as a sugar. D. All the choices are correct.