The building blocks of DNA are the _____________
A. amino acids
B. carbohydrates
C. enzymes
D. nucleotides
E. lipids
D
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Nonpolar signal molecules enter the cell by ____
a. facilitated diffusion b. simple diffusion c. osmosis d. active transport e. receptor-mediated endocytosis
The total compaction of DNA as seen in metaphase chromosomes is approximately ________-fold.
A) 10,000 B) 50,000 C) 100,000 D) 40
What sense is not one of the special senses?
A. smell B. vision C. taste D. touch E. hearing
The concept of nuclear equivalence states that:a
all of the somatic cells in an adult organism have the same genes. b. the genes of the individuals of the same species are exactly the same. c. as cells mature, unneeded genes are lost. d. the nuclei of all organisms are the same. e. nuclei of individuals of the same species are the same size.