In plant taxonomy, a division is the equivalent to _______________ .
A) family
B) order
C) class
D) phylum
E) kingdom
Ans: D) phylum
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Photosynthetic accessory pigments Examples of photosynthetic accessory pigments are
a) chlorophyll b and carotenoids. b) chlorophyll a and carotenoids. c) chlorophyll a and chlorophyll b. d) carotenoids, chlorophyll a, and chlorophyll b. e) mitochondria.
Birds and crocodiles share a more recent common ancestor than either group shares with lizards or mammals. Lizards and crocodiles have a common ancestor also shared by birds. Which of the following statements about the relationships among these organisms is most accurate?
a. Birds and crocodiles are a monophyletic group. b. Lizards and crocodiles do NOT compose a monophyletic group. c. Birds, crocodiles, and lizards taken together compose a monophyletic group. d. Birds, crocodiles, lizards, and mammals taken together also compose a monophyletic group. e. All of the above.
Aminoglycosides
A. are metabolic analogs of PABA and block folic acid synthesis. B. block peptidases that cross-link glycan molecules. C. attach to the 30S ribosomal subunit and disrupt protein synthesis. D. interfere with elongation of peptidoglycan. E. damage cell membranes.
The __________ __________ is made up of two concentric membranes and is continuous with the membrane of the endoplasmic reticulum
(a) plasma membrane (b) Golgi network (c) mitochondrial membrane (d) nuclear envelope