Which of the following situations would be best for growing most plants?
a. a soil with very small air spaces
b. a soil with relatively large air spaces
c. a soil with air spaces filled almost entirely with water
d. a soil with various sizes of air spaces
Ans: d. a soil with various sizes of air spaces
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Identify the stage of mitosis shown in panel E
a. interphase b. prophase c. metaphase d. anaphase e. telophase
Which of the following is NOT an advantage of
sexual reproduction? a. It offers an alternative adaptation in a changing environment. b. It is adaptive in coevolution situations. c. It is energetically costly. d. The genetic variation it provides may be useful in the future. e. It yields offspring with novel combinations of traits.
Beta-lactam antibiotics such as penicillins, have an effect on which of the following types of cells?
A. animal cells B. bacterial cells C. fungal cells D. virus-infected cells E. both animal and fungal cells
Name the stage of M phase in which the following events occur. Place the numbers 1–8 next to the letter headings to indicate the normal order of events
A. alignment of the chromosomes at the spindle equator B. attachment of spindle microtubules to chromosomes C. breakdown of nuclear envelope D. pinching of cell in two E. separation of two centrosomes and initiation of mitotic spindle assembly F. re-formation of the nuclear envelope G. condensation of the chromosomes H. separation of sister chromatids