Biology Final Exam

Which of these is true of prokaryotes?

• They are always unicellular.

• They are always multicellular.

• They can be unicellular or multicellular.

• They are neither unicellular nor multicellular.

Both prokaryotic and eukaryotic cells have a membrane-bound nucleus.

• True

• False

What is the name for the process of maintaining a stable environment within a cell?

• duplication

• nucleotide

• respiration

• homeostasis

Proteins are made in organelles called _______.

• ribosomes
• mitochondria

• xylem

• phloem

Green plants convert sunlight into chemical energy in the _______.

• chloroplasts
• golgi bodies

• vacuoles

• stem

Cells extract energy from nutrients in a structure known as the powerhouse of the cell, or the _______.

• mitochondria
• ribosome

• vacuole

• cell wall

Which of these statements is true?

• All bacteria have a nucleus.

• All bacteria make you sick.

• All bacteria are unicellular.

• All viruses are bacteria.

Photosynthesis occurs

• in the cells of autotrophs.

• in the cells of heterotrophs.

• only in the upper troposphere.

• when plants or animals decompose.

What do plants do with most of the oxygen produced in photosynthesis?

• They use most of the oxygen to make more glucose.

• They release most of the oxygen into the atmosphere.

• They release most of the oxygen into the soil.

• They use most of the oxygen to produce carbon dioxide.

Which process provides humans with the glucose needed for cellular respiration?

• digestion

• fermentation

• photosynthesis

• breathing