The two organ systems that are involved in removing wastes from the cells and eliminating them from the body are the ________ system and ________ system
Fill in the blank(s) with correct word
cardiovascular; urinary
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An example of a phenotypic trait where observation of phenotype can easily identify the genetic variation is:
A. color markings in certain invertebrates. B. human skin color. C. human blood type. D. color markings in certain invertebrates and human blood type. E. human skin color and blood type.
During the S phase of interphase, the state of a eukaryotic chromosome can be described as
A) a single continuous linear double helix. B) a double helix replicating semiconservatively. C) a double helix replicating conservatively. D) a triple helix replicating semiconservatively. E) two linear single-stranded molecules.
Which of the following statements is FALSE?
a. Heat loss represents a one-way loss of energy from an ecosystem. b. Organisms in the food chain can use all the energy contained in the food that they eat. c. In some ecosystems, the majority of the energy stored in plants does not become available until the plants die. d. Heat and energy are lost by each organism in the ecosystem. e. The two food webs are classified as grazing and detrital.
Lichens are most typically formed by the symbiotic association of an alga or cyanobacterium and:a
an ascomycete. b. a glomeromycete. c. a basidiomycete. d. a zygomycete. e. a chytridiomycete.