HH SEM1 EXAM_04

What is one of the ways water enters the atmosphere in the water cycle?

• condensation

• denitrification

• precipitation

• transpiration

What is the importance of the main nutrient cycles?

• to carry out life functions

• to provide drinking water

• to regulate climate

• to supply fresh air

Nutrients move through an ecosystem in _________.

• biogeochemical cycles
• ecological pyramids
• energy pyramids
• water cycles

The cell theory is _________.

• All living organisms are composed of at least one cell.

• Cells are the basic unit of structure and function in living things.

• Cells arise only from previously existing cells.

• All of the above.

What part of the cell is often called the “brain of the cell”?

• endoplasmic reticulum

• mitochondria

• nuclear membrane

• nucleus

Eukaryotic cells are _________.

• Cells containing a nucleus and other membrane-bound organelles

• Cells containing a nucleus and other nucleus-bound organelles

• Cells that have no membrane

• Cells with no membrane-bound organelles

What are the small structures inside of cells that carry out specific functions called?

• macromolecules

• organelles

• organs

• tissues

The _________ is a storage area for the cell.

• Golgi body
• lysosome
• ribosome
• vacuole

What are the small structures that break down materials in the cell?

• chloroplasts

• Golgi bodies

• lysosomes

• ribosomes

What organelle is associated with the production of proteins?

• cell membrane

• mitochondria

• nucleus

• ribosome