Exam 6: Cell Structure and Internal Compartments

Humans become infected with malaria when bitten by an infected mosquito, whereas mosquitoes become infected after having bitten an infected ____________________.

Certain cells in the mouth produce large amounts of the enzyme amylase, a component of saliva that hydrolyzes carbohydrate. Which of the following organelles would be expected to be especially abundant in these cells?

The movements of wound-healing fibroblasts in your body depend on pseudopodia that can extend and retract, because the microfilaments in them can rapidly change their length.

Which of the following structures in not found in all types of cells?

At the most basic level of life, organic compounds are organized into energy-dependent, self-replicating units known as ____________________.

The figure below shows a mitochondrion, emphasizing its inner and outer membranes. The inner membrane of the mitochondria is thought to have evolved from

A membrane that is selectively permeable causes damage to the cell by allowing solutes to enter and leave the cell indiscriminately.

The membrane known as the _____ contains light-capturing pigments like chlorophyll.

Eukaryotic cells contain membrane-bound organelles.

In eukaryotic cells both the nucleus and mitochondria have double membranes.

The microfilaments that allow cells to move contain the protein ____________________.

Biologists call an agent that spreads an infectious disease a vector. What is the vector for malaria?

Which of the following is correctly matched?

Your muscle cells need large amounts of ATP to function in the movement of your body. Which of the following organelles would you expect to be especially abundant in muscle cells?

The Golgi apparatus

Prokaryotes and eukaryotes are primarily distinguished by the absence or presence of internal membrane-bound organelles. Are prokaryotic cells at an evolutionary disadvantage because they lack organelles?

The process of photosynthesis

The ____________________ endoplasmic reticulum is covered with ribosomes.

A screen door allows breezes to enter and aromas to exit but keeps out insects. Its function most resembles

DNA analysis supports the hypothesis that prokaryotes evolved from earlier eukaryotes through adaptive simplification-a process where unnecessary cellular structures are gradually lost.