The body’s internal environment is synonymous with extracellular fluid.
Indicate whether the statement is true or false
Ans: True
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Answer the following statements true (T) or false (F)
1.During development, bone becomes progressively more calcified and hardened. 2.An individual skeletal muscle is separated from others by the connective tissue sheath which wraps it. 3.The basic job of skeletal muscle is to pump blood through the body. 4.When a motor neuron stimulates a muscle fiber, the fiber contracts. 5.The membrane of a muscle cell makes a deeply indented set of B tubules where a motor neuron contacts it.
Biofilms are the immune system's way to keep pathogens from colonizing a host
Indicate whether the statement is true or false
A keystone species affects its community by ____.
A. maintaining food web interactions or modifying the habitat B. controlling the prey species C. decreasing the number of prey species in a community D. preying upon a wide variety of organisms in the community E. feeding on only one type of organisms in the community
Follicle-stimulating hormone is secreted from the ________ gland
Fill in the blank(s) with correct word