________ are various types of intracellular structures thought to have evolved within a cell rather than as organelles
a. Endosymbionts
b. Ribosomes
c. Lysosomes
d. Mitochondria
a
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List the three factors required for gene therapy, and explain the difference between ex vivo and in vivo gene therapy
What will be an ideal response?
Four of the five structures listed below are
components of the human respiratory system. Select the exception. a. thoracic cavity b. pleural sac c. diaphragm d. book lungs e. larynx
Autoimmune diseases result from a breakdown in the ability of the body to____
a. produce antibodies b. produce memory cells c. destroy major histocompatibility proteins d. distinguish self from non-self e. distinguish between harmless and pathogenic microorganisms
Four of the five answers listed below are bases used to construct nucleic acids. Select the exception
a. cytosine b. adenine c. thymine d. guanine e. phenylalanine