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TLS Online TPP Program

#Question id: 12571

Although extinction is a natural process, current extinctions are of concern to environmentalists because

#Unit 10. Ecological Principles
  1. More animals than ever before are going extinct.
  2. Most current extinctions are caused by introduced species. 
  3. The rate of extinction is unusually high
  4. Current extinction is primarily affecting plant diversity.
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TLS Online TPP Program

#Question id: 3365

#Unit 11. Evolution and Behavior

Consider a population of 10,000 individuals, of which 2500 are homozygotes (PP) and 3000 are heterozygotes (Pp) genotype. The frequency of allele p in the population is
TLS Online TPP Program

#Question id: 12132

#Unit 10. Ecological Principles

Use the following diagram of a hypothetical food web to answer the following questions. The arrows represent the transfer of food energy between the various trophic levels.

Which letter represents an organism that could be a primary consumer?
TLS Online TPP Program

#Question id: 10274

#Unit 6. System Physiology – Plant

In plastids, a partial glycolysis occurs that produces metabolites for plastidial biosynthetic reactions, which of the following is not synthesized in the plastid?
TLS Online TPP Program

#Question id: 12802

#Unit 10. Ecological Principles

In  which  community  would  organisms  most  likely  have  adaptations  enabling  them  to  respond  to  different photoperiods?
TLS Online TPP Program

#Question id: 616

#Unit 1. Molecules and their Interaction Relevant to Biology

Which equilibrium below applies to noncompetitive inhibition?