In plant taxonomy, a division is the equivalent to _______________ .

A) family
B) order
C) class
D) phylum
E) kingdom


Ans: D) phylum

Biology & Microbiology

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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.

Biology & Microbiology

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.

Biology & Microbiology

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.

Biology & Microbiology

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

Biology & Microbiology