Compare and contrast the three types of muscle tissue
What will be an ideal response?
Cardiac muscle is located in the heart, and it functions to pump blood to the lungs and to the body. This muscle is characterized by branching striated cells with a single nucleus and specialized junctions that facilitate the rapid spread of nerve impulses throughout the heart. Skeletal muscle usually attaches to a bone, and when this type of muscle contracts, it causes voluntary movement. There are multiple nuclei in skeletal muscle cells, and contractile proteins are arranged to form striations. Smooth muscle is involuntary and can be found in the walls of the blood vessels, airways, and digestive tract. Smooth muscle cells lack striations, and each cell has a single nucleus.
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Interaction of a pathogen-associated molecular pattern (PAMP) with a pattern recognition receptor (PRR) results in
A) formation of transmembrane pores that cause cell lysis. B) transmembrane signal transduction that initiates transcription of genes involved in phagocytosis, inflammation, and pathogen killing. C) molecular activation of the adaptive immune system. D) a superantigen reaction that can cause septic shock.
Which one is a function of a cell's nucleus? a. Contains the cell's DNA
b. Store and ship materials within the cell. c. Produce proteins. d. Detoxify substances within the cell. e. Contributes to the cell's shape.
Which of the following is asserted by the idea of intelligent design?
a. An unknown designer created living organisms and their systems. b. Individuals evolve in response to a changing environment. c. All living organisms are designed to evolve and diversify. d. Populations evolve to accomplish a societal goal.
When the pea plant has two identical alleles (PP or pp), it is ______.
Fill in the blank(s) with the appropriate word(s).