The knee is stabilized by wedges of cartilage called ________
a. menisci
b. disks
c. patella
d. ligaments
a
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Photosynthetic autotrophs use ________ from the air as a carbon source and ________ as their energy source
Fill in the blank(s) with correct word
Respond to statements 146–150 in reference to the five animal
phyla listed below. a. Porifera b. Cnidaria c. Platyhelminthes d. Nematoda e. Annelida D 146. Members of this phylum have a pseudocoelomic cavity. D 147. Members of this group have a brain with nerve cords, have a saclike or branched gut, and lack a circulatory system. M 148. Members of this phylum have a brain with a ventral nerve cord, a complete gut, and a circulatory system that is usually closed. E 149. This phylum contains the most primitive species of the animal kingdom in the list. M 150. Tapeworms are members of this phylum.
The organelle that converts harmful hydrogen peroxide to water and oxygen is the ____
a. smooth ER b. peroxisome c. Golgi body d. ribosome e. lysosome
Which scenario illustrates a homeostatic mechanism?
a. city buses transporting people from their houses to their jobs b. water stored behind a dam that is released to make electricity c. a thermostat keeping a house at 72 degrees d. a series of underground passageways connected to a large building e. the daily temperature variations during one season