The samples that were loaded into each of the four lanes are as follows:
Lane 1: the primary RNA transcripts isolated from the nucleus of untreated cells
Lane 2: the primary RNA transcripts isolated from the nucleus of cells treated with the drug being tested
Lane 3: RNA isolated from the cytosol of untreated cells
Lane 4: RNA isolated from the cytosol of cells treated with the drug being tested
Which of the following conclusions is most likely to be CORRECT?
Based on the information provided by the gel shown above, what cellular process appears to be affected by the new drug?
Which of the following will occur in this container?
Which of the following statements is TRUE?
“All _____ have a plasma membrane.”
1. SRP binds to the growing polypeptide chain and to the ribosome.
2. Translation resumes.
3. SRP binds to its receptor.
4. The signal sequence is cleaved.
5. Protein synthesis begins in the cytosol.
6. Translation pauses.
A. SRP binds to the growing polypeptide chain and to the ribosome.
B. Translation resumes.
C. SRP binds to its receptor.
D. The signal sequence is cleaved.
E. Protein synthesis begins in the cytosol.
F. Translation pauses.
endoplasmic reticulum
transport vesicle
lysosome
Golgi apparatus
mitochondrion
nucleus
cytosol
plasma membrane
cell wall
chloroplast
citrate isocitrate -ketoglutarate succinate fumarate malate oxaloacetate
Adding succinate, fumarate, or malate to thin slices of tissue increased oxygen consumption, supporting the hypothesis that these molecules are intermediates in the process. However, a puzzling observation was that intermediates were still present in the reaction mixture at the end of the experiment. If they are intermediates, then they should be consumed as the next product in the pathway is formed. What explains this observation?
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