Turbellarian flatworms have a distinct head. When comparing the heads of these flatworms to insect heads, what is it missing?
A. Sensory organs
B. Anterior collection of nerve cells
C. A mouth
D. Light sensitive structures
Answer: C
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If you were to replace the phosphate group of a phospholipid with a fatty acid chain, you would have
A. glycerol. B. a triglyceride. C. cholesterol. D. glycolipid. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you know about the structure of a phospholipid? What other information is related to the question? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which one of the following structures in the moss life cycle is not haploid?
A. germinating spore B. antheridium C. sperm D. spore mother cell E. rhizoid tissue
The probability that a boy whose mother is heterozygous for an X-linked trait inherits the recessive allele is
A) 1/16. B) 1/8. C) 1/4. D) 1/2.
_________ can be used to disinfect water, food, and surfaces.
A) Chlorine compounds B) Phenols C) Alcohols D) Hydrogen peroxide