The contractile proteins that are located in myofibrils are called ________ and ________
Fill in the blank(s) with correct word
actin; myosin
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Which of these stages were a focus of study for Miller and Urey in their FIRST experiment?
Study of the origin of life has resulted in the breakdown of cellular development into overlapping stages, beginning with the synthesis of precursor molecules for the synthesis of nucleotides and amino acids and ending in polymers enclosed in membranes acquiring cellular properties. A. Stage 1: Nucleotides and amino acids were produced prior to the existence of cells. B. Stage 2: Nucleotides became polymerized to form RNA and/or DNA, and amino acids became polymerized to form proteins. C. Stage 3: Polymers became enclosed in membranes. D. Stage 4: Polymers enclosed in membranes acquired cellular properties. E. Stage 5: Ribosomes were developed inside the membrane.
A plant stoma is found between two ____
a. leaves b. root hairs c. xylem veins d. trichomes e. guard cells
During transcription which strand will act as the template for coding? a. The DNA strand
b. Both can be used as a template. c. The RNA strand. d. Neither is used as a template. e. None of these choices.
Please choose the term that describes a type of adaptive immunity occurring when a child gets the chickenpox vaccine.
A) Artificial passive immunity B) Natural active immunity C) Natural passive immunity D) Artificial active immunity