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Imagine looking through a microscope at a squashed onion root tip. The chromosomes of many of the cells are plainly visible.  In some cells, replicated chromosomes are aligned along the center (equator) of the cell.  These particular cells are in which stage of mitosis?

What is the role of NADP+ in photosynthesis?

Which of the following organelles contains hydrolytic (digestive) enzymes?

Which of the following descriptions BEST fits the class of molecules known as nucleotides?

Which of the following sequences correctly represents the flow of electrons through the linear (noncyclic) electron flow of the light reactions of photosynthesis:

Which of the following produces the MOST ATP when glucose (C6H12O6) is completely oxidized to carbon dioxide (CO2) and water (H2O)?

Red-green color blindness is a sex-linked recessive trait in humans.  Two people with normal color vision have a color-blind son. What are the genotypes of the parents?

  A. Name the phase of Mitosis.   B. Plant or Animal?

The following questions are based on Figure 12.3.Figure 12.3Which number represents the genetic material of the cell going from diploid to haploid?

Which term describes centrioles beginning to move apart in animal cells?