The study of comparative anatomy _____________.
A. looks at early stages of development in different animal species
B. supports the idea of fixed species
C. is based on the genetic language of DNA and RNA
D. provides information about the evolutionary history of species
D. provides information about the evolutionary history of species
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A phospholipid molecule in a membrane can:
A. spin (rotate around its vertical axis). B. move side-to-side (lateral movement). C. flip (rotate between the two halves of the bilayer). D. both spin (rotate around its vertical axis) and move side-to-side (lateral movement).
The outer boundary of a root’s vascular cylinder is a layer of cells called ____
a. pericycle b. cortex c. epidermis d. stele
e. endodermis__________ are symbionts with young roots that enhance a plant's ability to absorb mineral ions from
soil. Fill in the blank(s) with the appropriate word(s).
The maximum concentration of antibody from the
secondary immune response occurs between weeks a. 2 and 3. b. 3 and 4. c. 4 and 5. d. 6 and 7. e. 9 and 10.