What is the role of the large ribosomal subunits?
a. Binding to the mRNA
b. Reading the mRNA
c. Joining together amino acids to form a polypeptide chain
d. Folding the amino acids into proteins
c. Joining together amino acids to form a polypeptide chain
The large ribosomal subunit joins together the newly synthesized amino acids into a polypeptide chain.
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The feeding chambers inside the sponge are lined with specialized cells that generate a directed water current through the sponge and trap and ingest microscopic food particles. What are these cells called?
a. amoebocytes b. sclerocytes c. choanocytes d. pinacocytes
The scanning electron microscope differs from the transmission electron microscope in that the
scanning electron microscope:a. can view a live specimen. b. relies on the detection of electrons from the beam after contact with the specimens. c. can view the internal structure of a cell. d. utilizes a beam of light that passes through the specimen. e. gives a three dimensional image of the object being studied
What is a transgenic organism?
What will be an ideal response?
The difference-in-differences approach relaxes some of the required assumptions for establishing causality by leveraging what dimension of the empirical setting?
A. Observing repeated observations of the same cross-sectional units over time. B. Observing multiple cross-sectional units receiving the treatment. C. Being able to construct an instrument from the first stage difference. D. Observing a time series for one series.