Plants that have systemic acquired resistance (SAR) to a specific virus will be able to resist future infections whether or not the plant experiences necrosis in the first infection
A. true
B. false
B
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How do phagocytes interact speedily and effectively with pathogens?
What will be an ideal response?
Chancroid
A. presents with a hard chancre. B. is caused by Haemophilus ducreyi. C. is very painful in both sexes. D. is caused by a spirochete.
Which one of the following explanations does not describe why generating transgenic animals is more difficult than plants?
A) The intracellular environment of an animal can be much different than bacteria and even plants. B) Animal cells do not readily take up plasmid DNA like plant cells. C) The techniques for cloning animals from a single cell are more challenging than for plants. D) Genetic material must be inserted into a fertilized egg, then implanted into a living animal; plants can be grown in culture media, and thus, there is no need for implantation. E) Genetic material is introduced to animal cells in culture media and the animal is allowed to mature in the culture media.
A(n) ________ is made up of two or more tissue types that work together to carry out body functions
Fill in the blank(s) with correct word