Which of the following part of your immune system is activated in response to a particular antigen or pathogen?
a. adaptive immunity
b. innate immunity
c. complement proteins
d. mucus membranes
a. adaptive immunity
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____ is an element that is abundant in Earth's atmosphere; however, usable forms of this element (such as ammonia) are comparatively rare in certain soils. To circumvent this problem, soybean plants form symbiotic relationships with bacteria
Fill in the blank with the appropriate word.
________ are hollow tube-like structures that hold some archaeal daughter cells together after cell division while ________ are grappling hook-like structures that appear to attach archaeal cells to surfaces.
A. Cannulae; pili B. Cannulae;hami C. Pili; hami D. Hami; fimbriae
Which event may occur in all viruses,
prokaryotes, and eukaryotes? a. duplication b. aneuploidy c. translocation d. mutation e. none of these
What is the expected proportion of offspring with sickle-cell anemia if both partners are heterozygous for the sickle-cell anemia gene?
What will be an ideal response?