Every year, incoming solar energy is __________
the energy that is stored in all known fossil reserves.
a. half
b. one-fourth
c. twice
d. five times
e. ten times
Answer: e
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If a normal diploid germ cell in a bird has eight chromosomes, then
a. there are eight homologous pairs of chromosomes per diploid germ cell. b. there are eight chromatids per diploid germ cell after DNA replication. c. there are four chromosomes per cell after the first meiotic division and cytokinesis. d. sperm cells made from this diploid germ cell would have eight chromosomes. e. there are eight copies of each chromosome in this diploid germ cell.
Concerning the sex chromosomes, which of the following is correct?
a. The Y chromosome carries a greater number of nonsexual traits. b. X and Y are different in size but carry nearly equal numbers of genes. c. The X chromosome carries more genes for nonsexual traits. d. The X chromosome carries only gender-related genes. e. The X chromosome carries the SRY gene.
If trying to isolate a specific pathogen from amongst a variety of normal microbiota, which type of media would be most helpful?
A.) nutrient agar B.) differential media C.) blood agar D.) selective and differential agar
Which theory suggests that many factors or genes contribute to the phenotype in a cumulative or quantitative manner?
A) heritability theory B) multiple factor hypothesis C) additive gene theory D) threshold gene theory