Exam 2: Are We Alone in the Universe? Water, Biochemistry, and Cells

The ________ is the compartment in a eukaryotic cell that stores DNA in the form of chromatin.

Cells contain proteins that help transport substances from the exterior to the interior of the cell. Where are these proteins found?

Which organelle is found in plant cells but not in animal cells?

Which organelle performs cellular respiration?

Assume that a plant is suffering from drought and is beginning to wilt. Which cell component is most likely being affected, and what type of molecule is being lost from this structure?

Label the parts of the animal cell.

What type of chemical bond connects the complementary strands of a DNA molecule to each other?

The antibiotic streptomycin prevents protein synthesis in prokaryotes. Which cell component is the most likely target of this antibiotic?

Sodium chloride is composed of molecules that are stable when dry. In the presence of water, however, the atoms that compose the molecules separate from each other. What type of chemical bond holds the dry substance together?

Microtubules, microfilaments, and intermediate filaments compose what part of a cell?

Because the electrons in a water molecule are shared unequally between hydrogen and oxygen, water is said to be

Each of the following is a feature of all known living things EXCEPT

A solution with a pH of 2 has an H⁺ ion concentration that is ________ than a solution with a pH of 4.

The ________ of an organism is defined as all the chemical processes that occur in the cells of that organism.

Prokaryotic cells are generally ________ the diameter of eukaryotic cells.

Which of the following are found in the nucleus of an atom?

Protons have a ________ charge and, collectively, give an element its ________.

Proteins are polymers of

Which pH represents an equal number of H⁺ and OH^- ions?

Which of the following could accept one (and only one)electron?