The cell membrana contains pores that
allow materials in and out of the cell.
A true
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Biology, 22.06.2019 03:00
20 points and brainlist 1. london has suffered from terrible air pollution for at least seven centuries. why is the city so prone to its famous βlondon fog? β what did london do to get rid of its air pollution? 2. why does air pollution cause problems in developing nations more than in developed ones?
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Biology, 22.06.2019 05:40
Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion
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Biology, 22.06.2019 13:20
Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.
Answers: 1
Biology, 22.06.2019 15:00
Viruses can be transmitted through air, water, food, insect bites, and direct skin contact. once a virus gains entry into the body, it invades a host cell in order to? a. synthesize antibodies for defense b. deactivate the host cell's defenses c. access cell processes for reproduction d. metabolize host proteins and grow
Answers: 1
Mathematics, 26.06.2020 16:01
Chemistry, 26.06.2020 16:01
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