The gas tail of a comet
a. is smooth and featureless with a spectrum identical to that of the Sun.
b. is present even when the comet is located in the region of the Kuiper belt.
c. is unaffected by the magnetic field of the Sun.
d. always points toward the Sun.
e. is streaked and shows emission lines of ionized atoms.
e
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Early in the twentieth century, Walter Sutton and Theodor Boveri noted that the behavior of chromosomes during meiosis is identical to the behavior of genes during gamete formation
They proposed that genes are carried on chromosomes, which led to the basis of the ________. Fill in the blank(s) with correct word
In performing a bacterial spore staining techniques, the counterstain is
A. Carbolfuchsin B. Methylene blue C. Malachite green D. Safranin E. The right answer is not listed
What do polysaccharides, such as cellulose; nucleic acids, such as DNA; and proteins, such as keratin, have in common?
A) They are all amino acids. B) They are all nonpolar. C) They are all built of chemically linked monomers. D) They are all lipids. E) They are all carbohydrates.
An element has 8 protons, 9 neutrons, and 8 electrons. Its atomic number and atomic mass, respectively, are _________.
Fill in the blank(s) with the appropriate word(s).