Most energy enters ecosystems in the form of sunlight.

a. True

b. False

Which of the following describes catabolic reactions? a.) They are endergonic and have a negative change in free energy. b.) They are exergonic and have a positive change in free energy. c.

Which of the following sentence best describes a buffer? Buffers resist change in pH of solutions by neutralizing excess acid or base. Buffers change the pH of solutions by increasing acidity or basicity of solutions.

Based on the lab results, which organism is most likely causing tori's new symptoms? based on the lab results, which organism is most likely causing tori's new symptoms?

What might you see if you ran a DNA sample extracted from evidence on a gel before PCR?

Put the following actions in order: DNA replication, cell grows, cell division, cell prepares for mitosis.

What does the onset of menopause indicate about the number of immature eggs remaining in the ovaries?

I'm what ways are the roots and stems of a plant alike and different?

Groups of the periodic table correspond to elements with a. the same color b. the same atomic number c. similar chemical properties d. similar numbers of neutrons

Which of the following statements is true of babies born to HIV-infected mothers?

All cells within an organism will have the same number of chromosomes except the gamete.