Determine the differences between cell division of normal cells and that of cancer cells
What will be an ideal response?
Normal, noncancerous cells pass through checkpoints in which monitoring occurs at specific points in the cell cycle. Cells that cannot pass the checkpoints and cannot be repaired undergo a process of programmed cell death known as apoptosis. When changes in the DNA of a cell cause uncontrolled cell division, the resulting cells may form a growth or a mass known as a tumor. Benign tumors are confined to their original locations while cancerous tumors invade other tissues, a process called metastasis. Cancer cells are not inhibited by high cellular density or loss of their anchorage to other cells.
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The first trimester is a critical period for development because events in the first 12 weeks establish the basis for organ formation, a process called ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following is part of a thin myofilament?
A. ATP-binding site B. globular (G) actin C. calcium D. myosin E. sarcolemma
The fact that most of us have five lumbar vertebrae, but some people have six and some have four, is an example of ________ variation among organisms
A) anatomical B) reductionist C) cellular D) physiological E) holistic
Explain why ejaculation is both a sympathetic and parasympathetic reaction.
What will be an ideal response?