Which of the following statements BEST describes the relationship between photosynthesis and cellular respiration?

Choose the answer below that lists the events of protein synthesis in the proper sequence:1. Messenger RNA is attached to ribosomes.2. Messenger RNA moves from the nucleus to the cytoplasm.3. Transfer RNA molecules carrying amino acids arrange themselves along a messenger RNA template.4. Peptide bonds form between amino acids.5. Messenger RNA separates from the DNA strand along which it was synthesized.

The citric acid cycle produces which of the following molecules that then transfer energy to the electron transport chain?

What is the mechanism for the production of recombinant chromosomes?

The maintenance of a relatively stable internal environment is referred to as

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

A Barr body is normally found in the nucleus of which kind of human cell?

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

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?

For the following questions, match the key event of meiosis with the stages listed below. I. Prophase I V. Prophase II II. Metaphase I VI. Metaphase II III. Anaphase I VII. Anaphase II IV. Telophase I VIII. Telophase II Tetrads of chromosomes are formed; crossing over at the chiasmata occurs between sister chromatids.