Cell size is limited by the ability of oxygen, nutrients, and wastes to diffuse through the cell membrane
Indicate whether the statement is true or false
TRUE
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The bodies of arthropods are supported mainly by ____
a. an exoskeleton b. only nonskeletal structures c. a hydrostatic skeleton d. an endoskeleton e. joined exo- and endoskeletons
During photosynthesis, high-energy carbohydrates are produced at the end of
A) light absorption by chlorophyll.
B) cellular respiration.
C) the light reactions.
D) the Calvin cycle.
E) the electron transport pathway.
What describes placental mammalian embryos?
A. They are totally dependent on the mother for complete development. B. They are born immediately after fertilization. C. They complete development in a pouch. D. They hatch from an internal egg. E. They develop inside a leathery shell.
Answer the following questions true (T) or false (F)
1. Although protozoan parasites develop drug resistance, it's difficult and time consuming to test them for their drug response, which means the prescribed therapy tends to use a trial-and error approach. 2. Clostridium difficile naturally form endospores that inherently resist most antibiotics due to their dormant nature and their tough spore coat that blocks drug entry. 3. A healthy respiratory microbiome is dominated by species from the phyla Bacteroides, Firmicutes, and Proteobacteria.