The cephalic flexure indicates the ____ while the cervical flexure indicates the ____.
A. Forebrain-Midbrain Junction; Hindbrain-Spinal Cord Junction
B. Forebrain-Midbrain Junction; Midbrain-Hindbrain Junction
C. Hindbrain-Spinal Cord Junction; Forebrain-Midbrain Junction
D. Midbrain Region; Hindbrain-Spinal Cord Junction
E. Midbrain-Hindbrain Junction; Hindbrain-Spinal Cord Junction
Answer: D. Midbrain Region; Hindbrain-Spinal Cord Junction
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Ten percent Calcofluor White stain is often used in wet mounts of ________.
A. bacteria B. molds C. parasites D. protozoa
Recent studies have demonstrated evolution in populations over a span of time as short as ____
a. single years b. decades c. centuries d. thousands of years e. millions of years
Plants and algae most recently shared a common ancestor 480 million years ago, and plants colonized land shortly after that. In sexual reproduction, an alga simply releases gametes into the water, and the current carries the sex cells to another individual. What adaptation did plants have to make in reproduction when they moved to dry land?
a. Development of stomata b. Development of vascular tissue c. Production of a cuticle d. Production of pollen e. Production of lignin
In 1953 the structure of DNA was determined to be a ________
Fill in the blank with correct word.