Silicon has an atomic number of 14 and a mass number of 28. How many neutrons are found in silicon?
A. 28
B. 14
C. 42
D. 8
B. 14
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Match the cell adhesion or junction on the left with the appropriate choice on the right.
A) protein subunits associated with gap junctions B) a type of adhesive junction connecting an epithelial cell to the basal lamina C) collection of fibrous intracellular attachment proteins D) create a permeability barrier E) button-like points of strong adhesion between two cells F) hollow cylinders associated with gap junctions G) type of adherens junction connecting cells with the extracellular matrix H) intermediate filaments associated with plaques I) collection of adherens junctions particularly associated with epithelial cells J) type of adhesive junction containing actin microfilaments K) specialized modifications of the cell membrane in which two cells come together in multicellular organisms L) point of cytoplasmic contact between two cells M) anchors cytoskeleton of one cell with that of a neighboring cell 1) adherens junction 2) desmosome 3) cell junctions 4) connexons 5) plaque 6) tonofilaments 7) hemidesmosomes 8) adhesion belt 9) adhesive junction 10) tight junctions 11) connexin 12) gap junction 13) focal contact
Methane hydrates found at the bottom of the ocean ________.
A. float to the surface where they are consumed by methylotrophs B. vastly exceed in amount the world's current known natural gas reserves C. are only formed in areas of thermal heating D. All of the choices are correct.
Order __________ includes the turtles and tortoises
a. Crocodilia b. Squamata c. Testudines d. Apoda e. Anapsida
Arteries branch into smaller and smaller arteries until they become small-diameter ________ that enter the capillary bed
Fill in the blank(s) with correct word