What does an organism need to be classified as Lophotrochozoa?
a. a set of ciliated tentacles around the mouth
b. free-swimming larvae with two bands of cilia
c. triploblastic germ layers and bilateral symmetry
d. a fully formed true coelom lined by mesoderm
c. triploblastic germ layers and bilateral symmetry
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Having more than two sets of chromosomes in the genome is most accurately referred to as:
A. chromosome condensation. B. repeated sequence motif. C. the C-value paradox. D. supercoiling. E. polyploidy.
On island A, there is also a species of wind-pollinated plant that is unaffected by the volcano (does not speciate). Why?
What will be an ideal response?
Answer the following statements true (T) or false (F)
1. The covalent bonds that hold monosaccharides together in a polysaccharide are called glycosidic bonds. 2. A DNA nucleotide consists of the following three parts: a nitrogenous base, ribose, and a phosphate group. 3. The waxes in the cell walls of Mycobacterium tuberculosis cause this organism to be acid-fast. 4. The basic structure of a cell membrane is a lipid bilayer. 5. DNA polymerase is the only enzyme required for DNA replication.
A cyclist rides her bike up a very steep hill. Which of the following statements properly describes this activity in energetic terms?
a) Potential energy in food is converted to kinetic energy as the cyclist's muscles push her up the hill b) Kinetic energy is highest when the cyclists is at the crest of hill c) The cyclist produces the most potential energy as she cruises down the hill's steep slope d) Potential energy is greatest when the cyclist is at the top of the hill e) both a) and d)