The outer membrane of gram-negative bacteria contains
a) sterols.
b) mycolic acid.
c) teichoic acid.
d) lipopolysaccharide.
Ans: d) lipopolysaccharide.
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In animals, one group of homeobox genes, the Hox gene family, regulates the development and location of structures
such as legs and wings along the anterior-posterior axis of the body.
a. True b. False
Most species of vertebrates are iteroparous
Indicate whether the statement is true or false
For each of the following organelles or structures, check the corresponding box if the organelle or structure is named or discussed in the animation.
A) lysosomes B) the nucleus C) mitochondria D) the Golgi apparatus E) ribosomes
To engulf a bacterium, a white blood cell would use ____
a. facilitated diffusion b. osmosis c. phagocytosis d. exocytosis e. sodium-potassium pumps