Legionellosis, caused by the bacterial respiratory pathogen Legionella pneumophila, has decreased in recent years due to advances in wastewater treatment procedures
Indicate whether the statement is true or false.
Answer: FALSE
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A variation of the PGD method, called ____________________, can test for genetic disorders in the egg before fertilization
Fill in the blank(s) with correct word
All of the following are tenets of the cell theory that
research with modern microscopes supports EXCEPT that a. all organisms consist of one or more cells. b. the cell is the smallest unit that retains the characteristics of life. c. since the first cell, each new cell is descended from previous cells. d. each cell is composed of products that it manufactures. e. cells may arise spontaneously under certain laboratory conditions.
Ethidium bromide
a. terminates the formation of polynucleotide chains. b. is used to detect a protein of interest. c. is a nonspecific stain for nucleic acids. d. is a nonspecific nuclease. e. allows DNA polymerase to be thermostable.
Which trait is a characteristic of most monocots?
a. four or five floral parts, or multiples of four or five b. three furrows with pores on pollen grain c. vascular bundles organized as a ring in ground tissue d. branching fibrous root system e. two seed leaves of embryo inside the seed