Which of the following occurs during prophase?
A) Chromosomes line up on the midline of the cell.
B) The nuclear envelope forms.
C) Sister chromatids separate.
D) The mitotic spindle begins to form.
D
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The primary purpose of the light-dependent reactions is to ____
a. provide electrons and energy for the light-independent reactions b. generate O2 gas c. make ADP in cyclic photophosphorylation d. transfer electrons to the primary electron acceptors e. produce sugars such as glucose
Cancer cells would be attacked by which of the following cells?
What will be an ideal response?
The spinal cord is considered to be hollow due to:
a. the presence of ventricles throughout its length. b. the presence of a central canal. c. the presence of an encased vessel. d. the presence of a thin outer cell layer. e. It is not hollow.
Obese people have a greater risk of four of the following. Which one is the exception?
A. Type 1 diabetes B. Colon cancer C. High blood pressure D. Breast cancer E. Heart disease