Which of these infectious agents do not have nucleic acid?

A. viroids

B. viruses

C. bacteria

D. prions

Answer Explanation:

Therefore, the Correct Answer is D.

Q #1: The ________ circulation picks up oxygen for cellular use and drops off carbon dioxide for removal from the body.

A. pulmonary

B. interlobular

C. respiratory

D. bronchial
Answer Explanation

Our blood flow is separated into two major pathways, listed below:
1. Systemic circulation - this comes from the left side of the heart and pumps blood to all working tissues, including the brain, muscle, heart, and other organs, and then into the right side of the heart.
2. Pulmonary system - this comes from the right side of the heart, and pumps blood to the alveolar sacs within the lungs, and then into the left side of the heart
In pulmonary circulation: The pulmonary artery is a big artery that comes from the heart. It splits into two main branches, and brings blood from the heart to the lungs. At the lungs, the blood picks up oxygen and drops off carbon dioxide.
Q #2: Which of the following are structural features of the trachea?

A. C-shaped cartilage

B. Smooth muscle fibers

C. Cilia

D. All of the above

Answer Explanation
Q #3: Which of the following best describes the result of using a catalyst in a chemical reaction?

A. A more desirable product is often formed

B. The reaction is completed in a shorter amount of time

C. The yield of product is increased

D. A greater amount of energy is released by the reaction

Answer Explanation

A catalyst is substance that speeds up the rate of converting reactants to products. They do by decreasing the activation energy of a reaction. If a catalyst increases the rate of reaction, then it means that the reaction takes a smaller time to come into completion.
Catalysts can be metals, ions or biological also known as enzymes. Catalysts are not consumed when the reaction is taking place.

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Which of these infectious agents do not have nucleic acid?

More Questions on TEAS 7 Science

Q #1: The ________ circulation picks up oxygen for cellular use and drops off carbon dioxide for removal from the body.

Answer Explanation

Q #2: Which of the following are structural features of the trachea?

Answer Explanation

Q #3: Which of the following best describes the result of using a catalyst in a chemical reaction?

Answer Explanation

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