The life cycle of a sexual reproducing organisms includes:
A. mitosis and meiosis.
B. mitosis, meiosis, and fusion of the gametes.
C. meiosis and fusion of gametes
D. only mitosis
E. only meiosis
B. mitosis, meiosis, and fusion of the gametes.
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A fever augments the host's defenses by
A. enhancing microbiostasis. B. enhancing the activity of the immune system. C. stimulating leukocytes into action. D. All of the choices are correct.
Archeologists digging through several layers of rock discover fossils in the different layers
Typically, the deeper the fossil layer, the older the specimen. This is an example of what type of dating?
a. relative dating b. absolute dating c. radiometric dating d. geometric dating
Which enzymes should I use to generate a double stranded sequence that looks like this:AGCTT---------GA---------CCTAG
a. Eco RI and Hind III b. Hind III and Bam HI c. Bam HI and Cla I d. Cla I and Pvu I e. Pvu I and Bam HI
The structure labeled "2" in the figure is a(n) ____
a. mycelium b. zygote c. ascus d. gill from the underside of a mushroom e. spore sac