The ________ is an extraembryonic membrane that surrounds the embryo and serves to protect and cushion the embryo
Fill in the blank(s) with correct word
amnion
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What kinds of general observations cause one to conclude that development is the result of variable gene activity?
What will be an ideal response?
How many questions are needed in this dichotomous key to determine if the unknown is Bacteroides?
a. Four b. Three c. Five d. Two
Zara has worked for 40 years at a garden center, where she often potted plants. In the early days, she frequently worked with vermiculite, an asbestos-like material. Which organelles are most likely to have destabilized membranes as a result of exposure
to vermiculite? A) mitochondria B) Golgi complexes C) lysosomes D) nuclei
A student is shopping for antibacterial hand cleansers and is trying to decide which one to buy. One is a "waterless" hand gel containing 70% isopropanol, the second is an "antibacterial" hand soap containing triclosan (a phenolic), and the third is a wipe that lists benzethonium chloride (a synthetic quaternary ammonium salt) as the active ingredient. Compare and contrast these cleansers in
terms of the action of the antimicrobial ingredient and the level of disinfection (degerming, germistatic, germicidal). What will be an ideal response?