What polysaccharide forms the long, tough fibers found in plant cell walls?
A. chitin
B. cellulose
C. amylopectin
D. glycogen
E. starch
Answer: B
You might also like to view...
The levels of all of the following hormones except for ______ are regulated by negative feedback
A. oxytocin B. parathyroid hormone C. follicle-stimulating hormone D. insulin E. thyroid hormone
Which of the following descriptions best fits viroids?
a. prokaryotic cells that live on or in animal cells b. a DNA or RNA genome with a protein coat c. a single-celled eukaryote classified with the fungi d. the smallest pathogens made of naked circular RNA
Which of the following conditions increases the risk of heat stroke?
a. all of the choices b. old age c. pregnancy d. diabetes
The first child conceived by in vitro
fertilization was born in: a. 1978. b. 1984. c. 1991. d. 2007. e. 2009