Which type of cell would probably provide the best opportunity to study lysosomes?
a. muscle cell d. leaf cell of a plant
b. nerve cell e. bacterial cell
c. phagocytic white blood cell
c. phagocytic white blood cell
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Many species of angiosperms are self-incompatible due to the presence of the ____ -gene
Fill in the blank with the appropriate word.
The choanoflagellates are in the supergroup
A. Opisthokonta B. Rhizaria C. Amoebozoa D. Stramenopila E. Alveolata
A diet that does not contain any dark green vegetables, whole grains, yeast, or legumes may result in a ____
deficiency.
a. vitamin B1 b. vitamin B2 c. vitamin B6 d. folic acid e. niacin
Among bryophytes, only the sporophytes of mosses and hornworts have stomata, whereas stomata are missing from liverwort sporophytes. If the common ancestor of all bryophytes had sporophytes that bore stomata, then which of these might account for their absence from liverwort sporophytes? If, in contrast to early mosses and hornworts, early liverwort sporophytes had
A) more-effective transport of glucose from gametophyte to sporophyte. B) increased robustness (i.e., thicker, more massive tissues). C) increased nutritional independence from the gametophyte. D) decreased need to broadcast spores long distances.