Matthias Schleiden was a German botanist (plant scientist) and co-founder of cell theory, along with the physiologist Theodor Schwann. Schleiden determined that all the tissues of all the plants he studied were composed of cells, and Schwann discovered the same was true of all the animal tissues he studied. Together they concluded which of the following statements was true?
A. That plants, but not animals, are composed entirely of cells.
B. That animals, but not plants, are composed entirely of cells.
C. That some plants and animals are composed of cells.
D. That all plants and animals are composed of cells.
Ans: D. That all plants and animals are composed of cells.
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T cells undergo maturation in the bone marrow.
Answer the following statement true (T) or false (F)
Which of the following is one of the best examples of a commonly shared signaling pathway
connected to memory in invertebrates and vertebrates?
a. Cyclic AMP. b. Cycling RNA c. RNA cyclase. d. RNA binding protein e. non-responsive binding protein
he cell theory states that all living organisms:a
grow and develop. b. respond to stimuli. c. are composed of basic units called cells. d. can move from one place to another in order to find food or to escape predators. e. can form a population of organisms that is able to adapt to the environment.
What is a boycott?
A) A command, directive, or order. B) A domestic penalty applied by one country on another for a variety of reasons. C) A call to pressure a company by not buying its products and services. D) An authoritative order having the force of law.