The following is a list of steps involved in the process of phagocytosis. Which of the following answers indicates these steps in the CORRECT order?
1. Lysosome fuses with the vesicle containing a foreign cell.
2. Wastes from the foreign cell are removed.
3. The foreign cell is surrounded by the cell membrane of the phagocyte.
4. Lysosomal enzymes break down the foreign cell.
5. The foreign cell is contained within a vesicle.
A) 5, 3, 1, 4, 2
B) 3, 5, 2, 1, 4
C) 3, 5, 1, 4, 2
D) 2, 4, 1, 5, 3
E) 3, 1, 5, 4, 2
C
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In a lichen, the photobiont usually receives
a. nutrients. b. protection from herbivory. c. aid in sexual reproduction. d. enhanced dispersal of offspring. e. shelter from radiation and desiccation.
When the human gene coding for insulin is introduced into a mouse embryo, the gene is correctly expressed in the
appropriate tissue. This shows that:a. tissue-specific gene expression is highly conserved during evolution. b. the introduced gene was edited by the mouse embryo for proper function. c. the introduced gene was exactly the same as the mouse gene for insulin. d. mice and humans are not closely related. e. mouse genes are not tissue specific.
If chromatin is in a closed conformation, nucleosome position and histone composition _______________
Fill in the blank(s) with the appropriate word(s).
Which field of biology is concerned with the diversity and relatedness of organisms?
A) morphology B) phylogeny C) systematics D) evolution