Which of the following does not characterize arthropods?
A. presence of a coelom
B. segmentation
C. an open circulatory system
D. an exoskeleton
E. an incomplete digestive tract
E
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If recombination results in random integration of a DNA sequence so that it produces a non-homologous region, the recombination is ________
Fill in the blank(s) with correct word
Which three organelles are involved in the glycolate pathway?
A) lysosome, chloroplast, rough endoplasmic reticulum B) mitochondrion, nucleus, lysosome C) peroxisome, smooth endoplasmic reticulum, chloroplast D) peroxisome, chloroplast, mitochondrion E) Golgi complex, peroxisome, lysosome
The most common mode of reproduction in bacteria is:
a. binary fission. b. transformation. c. transduction. d. conjugation. e. mitosis.
Which of the following statements about digestion is true?
A) Digestion occurs only in the stomach. B) Digestion can be both mechanical and chemical, and it occurs both in the mouth and in the stomach. C) Mechanical digestion occurs only in the stomach; chemical digestion occurs only in the mouth. D) Digestion is the same thing as ingestion.