In eukaryotic cells, which occurs during mitosis?
a. the duplication of chromatids
b. the replication of DNA
c. the pairing of homologous chromosomes
d. the fragmentation and disappearance of the nuclear envelope and nucleolus
e. a cleavage furrow is formed
D
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Matt is studying how the protein transferrin enters cells. He examines cells that have taken up transferrin, and finds clathrin-coated vesicles. What mechanism was used to take transferrin into the cell?
A. Phagocytosis B. Pinocytosis C. Exocytosis D. Receptor-mediator endocytosis
Which of the following is NOT a secretion of the pancreas?
A. bicarbonate B. nutrient enzymes C. bile D. insulin
What nucleotide sequence would be found on the complementary DNA strand of the strand shown here?
A) ACTGT
B) UGAGA
C) TGACA
D) TGUGU
a special region of the chromatin where rRNA is produced and where proteins from the cytoplasm gather to form ribosomal subunits.
What will be an ideal response?