The first aquatic vertebrates arose at approximately the same time as the plants on land.
Answer the following statement true (T) or false (F)
True
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A relationship in which one species lives better in the presence of another species that is unaffected is called ____
a. commensalism b. competitive exclusion c. mutualism d. predation e. parasitism
Match the cell adhesion or junction on the left with the appropriate choice on the right
A) junction connecting tonofilaments to collagen filaments B) anchors cytoskeleton of one cell with that of a neighboring cell C) type of adherens junction connecting actin filaments to the extracellular matrix D) dense cluster of intracellular linker proteins connected to cytoskeletal filaments E) protein subunit of gap junctions F) continuous attachment zones connecting actin microfilament structures near the apical end of epithelial cells G) button-like point of strong adhesion between two cells H) intermediate filaments associated with plaques I) create a permeability barrier between epithelial cells J) an adhesive junction that connects an epithelial cell to the basal lamina K) hollow cylinders associated with gap junctions L) connects cytoplasms of two cells M) specialized modifications of the cell membrane in which two cells come together in multicellular organisms 1) adherens junctions 2) desmosome 3) cell junctions 4) connexons 5) plaque 6) tonofilaments 7) hemidesmosome 8) adhesive junction 9) tight junctions 10) connexin 11) gap junction 12) focal adhesion
Cotyledons, or "seed leaves," absorb food molecules stored in the
A) megaspore. B) ovary wall. C) sporophyte. D) endosperm. E) gametophyte.
Osmometer cells in the brain sense an increase in the salt concentration of plasma. This information is sent to the hypothalamus, which notifies the pituitary gland to release the hormone, ADH. ADH causes the kidney to save water, which lowers the salt concentration of the plasma. What characteristic of life does this overall pathway represent?
A. Homeostasis B. Cellular organization C. Energy utilization D. Evolutionary adaptation E. Sensitivity