Which pairing of occurrence and date is NOT correct?
Select one:
a. origin of invertebrates—630 million years ago
b. origin of life—4.6 billion years ago
c. origin of eukaryotic cells—2.1 billion years ago
d. origin of prokaryotic cells—3.5 billion years ago
e. chordate evolution—545 million years ago
b. origin of life—4.6 billion years ago
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Which term-definition pair is mismatched?
A. Coagulase - dissolves fibrin clots B. Capsule - antiphagocytic factor C. Leukocidins - damage white blood cells D. Fimbriae - adherence to substrate E. Hemolysins - damage red blood cells
Threadlike fungal filaments are called
A) mycelia. B) hyphae. C) vascular bundles. D) mold.
The place on a stem where one or more leaves are attached is called the ____
a. terminal bud b. internode
c. axil d. lateral bud e. node
Huntington’s disease is a dominant autosomal
genetic disorder. Albert has Huntington’s disease as did his mother. His father was normal. Albert is married to Lydia who does not have Huntington’s disease. If Albert and Lydia have a child, what is the probability that their child will have Huntington’s disease?
a. 0% b. 25% c. 50% d. 75% e. 100%