The Mesozoic era is often called the age of reptiles. Which of the following also occurred during this era?
A) the origin of animals in the oceans
B) the appearance of the first plants on land
C) the appearance of the first animals (tetrapods and insects) on land
D) the appearance of the first mammals and flowering plants on land
Answer: D
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Consider the metabolic repertoire of prokaryotes and the diverse environments in which they can thrive to answer the following questions. Only inorganic compounds like O2 or NO3 - may be used as terminal electron acceptors in respiration
A. true B. false
Plant cells permit ions and small molecules to move between adjacent cells by means of cytoplasmic channels in their
cell walls known as ____.
a. gap junctions b. plasmodesmata c. desmosomes d. cell junctions e. tonoplasts
Name two human traits that would be expected to have high concordance
What will be an ideal response?
Sarah observed that the mystery pond organisms never come up to the pond's surface. If she catches one of these organisms and observes closely, perhaps dissecting the organism, she should find _____
A) gills B) spiracles C) tracheae D) book lungs