In terrestrial and shallow-water ecosystems, the grazing food chain is dominant over the detrital food chain

Indicate whether the statement is true or false


FALSE

Biology & Microbiology

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To understand past and predict future changes in populations, ecologists use three important factors. These are:

A. the population's birth rate. B. expected longevity of individuals in the population. C. the proportion of individuals in the population able to reproduce. D. the population's birth rate and the expected longevity of individuals in the population. E. the population's birth rate, the expected longevity of individuals in the population, and the proportion of individuals in the population able to reproduce.

Biology & Microbiology

The relationship between the clownfish and the sea anemone it is associated with is an example of mutualism

Indicate whether the statement is true or false

Biology & Microbiology

What do gametes, spores, and the gametophyte generation have in common?

a. They are all diploid. b. They are all haploid. c. They are present in vascular plants only. d. They are all produced by meiosis. e. They are all triploid.

Biology & Microbiology

The presently accepted model of enzyme action was proposed by Daniel Koshland in the 1960s and suggested that the enzyme was a flexible structure with an active site roughly complementary to the substrate that binds it. After its initial interaction with the substrate, the enzyme alters its shape and thus improves the fit of the substrate in the active site. What is the name of this model?

a) the flexible sponge model b) the lock and key model c) the koshland model d) the induced fit model e) the flexible fit model

Biology & Microbiology