Which concentration of alcohol is deemed most effective in alcohol-based hand cleaners?
A. 25%
B. 10%
C. 70%
D. 95%
Answer: C. 70%
Biology & Microbiology
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Which of the following molecules help maintain cell-cell adhesions in plants?
A. cadherins B. pectins C. integrins D. cellulose
Biology & Microbiology
Which of the following is an adaptation to land seen in ferns but not in mosses?
a. vascular system b. alternation of generations c. ovules d. seeds e. spores
Biology & Microbiology
Animal cells recognize common types of pathogen molecules and activate the production of
antimicrobial peptides. ____________________ Indicate whether the statement is true or false.
Biology & Microbiology
In which type of regulation do hormones act on the cells that produce it?
a. classical endocrine signaling b. neuroendocrine signaling c. paracrine signaling d. autocrine signaling e. pheromone signaling
Biology & Microbiology