The atomic number of an atom refers to its ____.
A. mass or weight
B. number of protons
C. number of protons and neutrons
D. number of neutrons
E. number of electrons
Answer: B
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During spermatogenesis, each primary spermatocyte divides to eventually produce ________ spermatids
a. 1 b. 2 c. 4 d. 8
Salt marsh plants differ from seagrasses in that they:
a. are not fully marine plants. b. require freshwater to reproduce. c. are intolerant of full strength seawater. d. are found throughout the world. e. have roots, while seagrasses do not.
________ occurs when a chemical signal secreted by the roots of one plant blocks the germination of nearby seeds or inhibits the growth of a neighboring plant.
A. Etiolation B. The systemic response C. Allelopathy D. Nodulation E. Reduction
Choose the true statements about the human and mouse genomes. (Select all that apply.)A) The human genome shares 99% of its genes with the mouse genome.B) A comparison of genomes confirms that mice and humans shared a common ancestry more recently than humans and pufferfish.C) Very few genes are conserved in the two genomes.D) Little rearrangement of genes has occurred in the two genomes.
What will be an ideal response?