Homologous chromosomes may differ from each other in terms of:
a. size.
b. shape.
c. position of the centromere.
d. alleles.
e. number of genes.
d
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What is the first step in the germination of a seed?
A) pollination B) fertilization C) imbibition D) hydrolysis of starch and other food reserves E) emergence of the radicle
Which of the following are found in BOTH
plant and animal cells?
a. nucleus, Golgi body, and chloroplasts b. Golgi bodies, mitochondria, and endoplasmic reticula c. centrioles, cell wall, and nucleolus d. vacuoles, nucleolus, and lysosomes e. starch grains, chloroplasts, and lysosomes
The residence time is equal to the pool size divided by the flux between pools. The pool size of atmospheric carbon (carbon dioxide, methane, etc) is ~750 Pg, and the movement of carbon into the atmosphere from burning fossil fuels is around 7.5 Pg/year. How long does carbon from burning fossil fuels remain in the atmosphere on average?
A) 7.5 years B) 10 years C) 100 years D) 750 years E) There's not enough information to answer
The energy level listed below with the most energetic electrons is
A. 1. B. 2. C. 3. D. None of these. All energy levels contain electrons of equal energy.