You are observing a sample of cells in the lab to determine why they did not divide properly. You notice that the chromosomes are lined up in the middle of the cell, and the spindle fibers have extended towards them, but have not attached. What could be damaged? A. Centromere
B. Nuclear envelope
C. Mitochondria
D. Cytoplasm

What are the headings of a data table

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them

What materials must dams have to produce electricity, and what must occur?