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Two safety features found in most laboratories are a safety shower and a safety fountain with two jets. What is the main purpose of the safety fountain?
To irrigate the nostrils if fumes are inhaled
To rinse the mouth if chemicals are ingested
To wash the hands if exposed to toxic material
To flush the eyes if contaminated with chemicals
Which organism in the food web receives the least amount of energy from the producers?
Which of the following explains the role enzymes play in the process of digestion?
They prevent lipids from being absorbed into the blood stream
They improve the peristaltic movement of the intestines during digestion.
They increase the amount of acid released from the stomach.
They assure that digestion occurs within hours instead of days.
What is the main function of a vacuole?
Storage of water
Synthesis of energy
Replication of DNA
Formation of proteins
What is the proper level of organization within an organism?
Tissue, cell, organ, organ system
Organ, organ system, tissue, cell
Cell, tissue, organ, organ system
Organ system, organ, cell, tissue
Which of the following is a characteristic of both a prokaryotic cell and an eukaryotic cell?
Both cells undergo meiosis
Both cells lack a nucleus
Both cells contain a mitochondrion
Both cells contain genetic material
Vascular plants contain a group of cells that carry water and minerals throughout the plant. These cells function together to form which of the following?
Which characteristic distinguishes a plant cell from an animal cell?
The presence of a cell membrane
The presence of a vacuole
The presence of a nucleus
The presence of a cell wall
The cell shown in the diagram is found in which type of organism?