Photoreceptors are sensitive to what general type of sensory information?
A. sound
B. electromagnetic radiation
C. chemicals in the animal's environment
D. tactile
E. temperature
Answer: B
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Which of the following statements best compares the peduncle and receptacle?
A. The peduncle and receptacle are identical, merely two names for the same structure. B. The peduncle is haploid and the receptacle is diploid. C. The peduncle is a reproductive part of a flower and the receptacle is a vegetative part. D. The receptacle is the part of the flower that receives the pollen whereas the peduncle relays sperm to the ovule. E. The peduncle is the tip of the stem bearing the flower and the receptacle is the base of the flower.
Which of the following types of molecules are most important for a cell to protect from damage if the
cell is to stay alive and reproduce?
a. proteins b. lipids c. nucleic acids d. carbohydrates e. amino acids
Which of the following examples describes a unique functional property of the carboxyl group?
A. Its compounds may be structural isomers with different properties. B. Two groups can interact to help stabilize protein structure. C. It is polar as a result of the electronegative oxygen atom drawing electrons toward itself. D. The covalent bond between oxygen and hydrogen is so polar that hydrogen ions tend to dissociate reversibly. E. It acts as a base.
Prothrombin is converted to ________ during the clotting process
Fill in the blank(s) with correct word