From what food source do most of the calories in a typical American diet come?
A) meat
B) cereal grains
C) legumes
D) plant leaves
B
You might also like to view...
Which of the following has NOT contributed to the adaptive success of angiosperms over
gymnosperms?
a. vessel elements b. more efficient sugar transport c. ovary d. fruit e. tracheids
Answer the following statements true (T) or false (F)
1. Chicken eggs form a blastula through holoblastic cleavage. 2. One outcome of gastrulation is the establishment of primordial germ cells, which represent the cell types that form gametes. 3. Convergent extension, involution, and invagination are ways in which cells move and transform within the embryo. 4. The differentiation of cells into distinct body parts is induced by morphogens.
In a muscle contraction, the Z lines of a
sarcomere are ___.
a. closer together but not overlapping b. further apart c. the same distance as when not contracting d. thicker e. overlapping
Rods and cones are located in the
a. lens. b. cornea. c. pupil. d. iris. e. retina.