In sponges, the cells responsible for generating water currents that facilitate gas exchange and nutrition are the
A. choanocytes.
B. spicules.
C. mesohyl.
D. sperm.
E. symbionts
A
Biology & Microbiology
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Some plasmid vectors have incorporated the regulatory sequences of the lactose operon so that the expression of the recombinant gene can be induced at the appropriate time.
Answer the following statement true (T) or false (F)
Biology & Microbiology
Zinc competes with ______ for absorption.
What will be an ideal response?
Biology & Microbiology
Evaluate the statements below, and select those that correctly apply to the role of PAMPs and PRRs in microbe recognition and phagocytosis. Select All That Apply
What will be an ideal response?
Biology & Microbiology
The uptake of water and mineral ions from the soil occurs primarily at the
a. endodermis. b. root cap. c. quiescent center. d. pericycle. e. root hairs.
Biology & Microbiology