Mitochondria
synthesize proteins for use outside the cell
are single-membrane structures involved in the breakdown of ATP
contain their own DNA and RNA codes necessary for their function
contain digestive enzymes called acid hydrolyses
The Correct Answer is C
A. Synthesize proteins for use outside the cell: Proteins for secretion outside the cell are synthesized by ribosomes on the rough endoplasmic reticulum. While mitochondria produce some of their own proteins, they are primarily for internal use in energy metabolism.
B. Are single-membrane structures involved in the breakdown of ATP: Mitochondria are double-membrane organelles, not single-membrane. Their role is to generate ATP through oxidative phosphorylation, not to break it down.
C. Contain their own DNA and RNA codes necessary for their function: Mitochondria possess their own circular DNA and ribosomes, allowing them to produce some proteins and enzymes needed for oxidative phosphorylation.
D. Contain digestive enzymes called acid hydrolases: Acid hydrolases are found in lysosomes, where they break down waste and cellular debris. Mitochondria specialize in energy production, not intracellular digestion.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Forehead: The forehead corresponds to the frontal region of the head, not the mental region.
B. Neck: The neck is referred to as the cervical region and is distinct from the mental region.
C. Chin: The mental region refers specifically to the chin. A laceration in this area affects the lower front part of the face, just below the lower lip.
D. Ear: The ear is part of the auricular region, which is lateral to the mental region and unrelated to the chin.
Correct Answer is B
Explanation
A. Lateral: Lateral refers to a position away from the midline of the body. Both the patellar region (knee) and the tarsal region (ankle) are aligned along the midline of the lower limb, so lateral is not the correct directional term.
B. Proximal: Proximal means closer to the point of attachment or the trunk of the body. The patellar region is closer to the hip than the tarsal region, making proximal the correct anatomical relationship.
C. Medial: Medial describes a position closer to the midline of the body. Both the knee and ankle are centrally located along the limb, so medial does not properly distinguish their relative positions.
D. Distal: Distal refers to a point farther from the trunk or point of attachment. Since the tarsal region is farther from the hip than the patellar region, the knee cannot be described as distal to the ankle.
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