9. A climax community will persist until it is altered by-

A) a major change in an abiotic factor


B) seasonal dieback of vegetation


C) the reappearance of lichens and mosses

Which electron carrier is used in the redox reactions in cellular respiration?

For a prokaryotic gene, basal transcription is defined as A) the level of transcription produced by the RNA polymerase holoenzyme on its own. B) transcription that originates at the core promoter and + 1 site.

Identify the components of the plasma membrane involved in facilitated diffusion

A. there are a type of non-living cell that comes alive in a host. b. they are generally 1 - 2 micrometers in size or greater. c. they are generally capable of taking in nutrients and using them for energy. d. all viruses contain dna. e.

The meshwork that forms the fabric of a blood clot is

Which of the following needs a host to reproduce? 1) all of the above 2) eukaryotic cell 3) none of the above 4) prokaryotic cell 5) virus

Suppose that two ancient types of plants, one that grows in the winter and one that grows in the summer, appear together in the fossil record for two periods in the geologic time scale.

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How are traits inherited by offspring?

In homeotic mutants: Group of answer choices one body structure is missing. one body structure has been changed into another. one body structure has been duplicated. one body structure has significantly increased in size. the organism is infertile.