When you collect a sand dollar on the beach, you are looking at the shell of an echinoderm consisting of ossicles
formed from calcium carbonate crystals.
Indicate whether the statement is true or false.
ANSWER: True
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Many antibiotics kill bacteria because they hinder translation by prokaryotic _____
A. ribosomes B. capsules C. cytoskeleton D. cytoplasm E. nucleoids
A suspect's guilt seems highly likely when a very rare combination of markers is
A) found in the population the suspect comes from and at the crime scene. B) not found in the population the suspect comes from, but present at the crime scene. C) found in the suspect's DNA but not at the crime scene or in the population the suspect comes from. D) found in the population the suspect comes from, in the suspect's DNA, and at the crime scene.
The M phase of the cell cycle involves two main processes:a
mitosis and cytokinesis. b. meiosis I and meiosis II. c. homologous pairing and crossing-over. d. interphase and mitosis. e. mitosis and meiosis
Answer the following questions true (T) or false (F)
1. Contraction of the diaphragm causes exhalation to occur. 2. Pulmonary ventilation occurs because of pressure differences between the lungs and the external environment. 3. Digestion is a process of mechanical and chemical breakdown of larger food molecules into smaller ones that can be absorbed.