Sarcodines have pseudopods, which are finger-like extensions
of cytoplasm. These extensions
stretch out and do which of the
following?
A. They help the sarcodine move and get food.
B. They make the food using photosynthesis.
C. They cannot be pulled back in.
D. They have no real purpose other than
decoration.

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons