Which phylum is a member of the Parazoa clade?
a. Nemertea
b. Porifera
c. Rotifera
d. Ctenophora
e. Echinodermata
ANSWER: b
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Both hydrophilic and charged molecules readily diffuse through the cytoplasmic membrane
Indicate whether the statement is true or false.
Many algal species have life cycles consisting of alternating haploid and diploid generations. The most
common life cycle in brown algae consists of organisms that are
a. unicellular in the haploid stage and multicellular in the diploid stage. b. multicellular in the haploid stage and unicellular in the diploid stage. c. unicellular in both the haploid and diploid stages. d. multicellular in both the haploid and diploid stages. e. colonial in both the haploid and diploid stages.
Excerpt from Figure 14.8
The accompanying figure represents which chromosomal change?
A. Inversion B. Deletion C. Duplication D. Translocation E. Aneuploidy
The humerus fits into what at the shoulder?
A. clavicle B. acetabulum C. acromion process D. olecranon process E. glenoid cavity