Which step of binary fission is the reason for genetically identical daughter cells?

a. There are four new daughter cells that result from one parental cell
b. Elongation of the cell
c. Splitting of the two daughter cells
d. Replication of the bacterial chromosome


Answer: d. Replication of the bacterial chromosome

Biology & Microbiology

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There are several checkpoints in the mitotic cell cycle. All occur in the S phase

Indicate whether the statement is true or false

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A biologist isolates numerous tiny, green pigment cells from a sample of lake water. The cells are covered with a mucilaginous sheath. They contain relatively large amounts of chlorophyll a and phycobilin pigments and lack a compact, organized nucleus. Electron microscopy will reveal that these cells are also contain which of the following pairs of subcellular structures?

A. Ribosomes and chloroplasts B. Ribosomes and mitochondria C. Golgi bodies and a cell wall D. Thylakoids and a cell wall E. Chloroplasts and mitochondria

Biology & Microbiology

Convert 1mL to liter.

A. 0.01 liter B. 100 liters C. 10 liters D. .001 liters

Biology & Microbiology

In the experiment in which Frye and Edidin fused the plasma membranes of a mouse and a human cell, what happened

to the membrane proteins? a. They formed a bilayer. b. They formed a spherical structure. c. They moved laterally across the cell surface. d. They flip-flopped from one layer to the other. e. They reacted with cholesterol molecules on the membrane surface.

Biology & Microbiology