An excessive increase in the number of erythrocytes is called?
a) anemia
b) leukopenia
c) leukocytosis
d) polycythemia
e) neurtopenia
Answer: d) polycythemia
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Which of the following traits are considered to be inheritable?
A. bleached hair B. calluses on fingers C. the ability to speak Spanish D. eye color
Two-component signal transduction systems are found in the Bacteria, but not in Archaea.
Answer the following statement true (T) or false (F)
Why do human taste preferences exist?
a) Fats actually do taste better than sugars. b) Humans can extract energy from a variety of non-food sources, and so taste preferences cause us to focus on foods that are more plentiful in our environment. c) Vitamins and minerals give food unusual tastes, which causes us to seek them out. d) Human feeding choices influence energy intake and, consequently, fitness. e) Human taste preferences are culturally generated; consumers are influenced by suggestive advertisin
Cyanobacteria are prokaryotes that carry out oxygenic photosynthesis like green plants; this means that
A. they produce oxygen as a by-product of photosynthesis. B. they have two distinct photosystems. C. they use water as their electron source. D. All of the choices are correct.