A single nucleotide of RNA is composed of which of the following substances? ribose sugar, a phosphate group, and uracil
adenine, guanine, and cytosine
ribose sugar, deoxyribose sugar, and thymine
O hydrogen, a phosphate group, and adenine

Building glycogen from glucose molecules is an example of what

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Consider the classification levels of a human. eukarya ,animalia ,chordata ,mammalia ,primates, hominidae ,homo ,sapiens .which is the most specific taxonomic level in the classification system above? a sapiens b homo c hominidae d primates