Nitrogen gas is an extremely stable molecule because its structure contains which of the following?

A. lonic bonds

B. Triple covalent bonds

C. Resonance bonds

D. Hydrogen bonds

Answer Explanation:

Triple covalent bonds. Nitrogen gas consists of two nitrogen atoms that share three pairs of electrons, forming a triple bond. This bond is very strong and requires a lot of energy to break. Ionic bonds, resonance bonds, and hydrogen bonds are weaker types of bonds that do not occur in nitrogen gas.

Therefore, the Correct Answer is B.

Q #1: Which of the following statements best describes the function of erythropoietin in the human body?

A. It aids in lowering oxygen levels in the blood.

B. It aids in raising levels of clotting factors in the blood.

C. It aids in raising hemoglobin levels in the blood.

D. It aids in lowering CO2 levels in the blood.

Answer Explanation

Erythropoietin is a hormone that is produced by the kidneys and stimulates the production of red blood cells in the bone marrow. Red blood cells contain hemoglobin, a protein that binds to oxygen and transports it to the tissues. Therefore, erythropoietin helps to maintain adequate oxygen levels in the blood and prevent anemia.
Q #2: #OF FILTERS MASS (g) TERMINAL VELOCITY (m/s) 1 1.01 1.74 2 1.99 2.48 3 3.02 3.04 4 4.0 3.50 5 5.01 3.80 A group of students perform an experiment to test terminal velocity, which is the greatest speed obtained by a falling object. The students dropped different numbers of coffee filters and measured the resulting terminal velocity. Which of the following conclusions is supported by the data in the following data table?

A. Terminal velocity is when the force of gravity is equal to air resistance.

B. Heavier objects take more time to reach terminal velocity.

C. The greater the number of filters, the smaller the terminal velocity

D. Heavier objects fall faster than lighter objects.

Answer Explanation

Terminal velocity is the maximum speed achieved by an object freely falling through a gas or liquid. At terminal velocity, the forces acting on the object are balanced so it is no longer accelerating. Terminal velocity is achieved when the force of gravity is equal to air resistance. From the data table you provided, we can see that as the mass of the coffee filters increases, so does the terminal velocity. This means that heavier objects fall faster than lighter objects. Therefore, conclusion D is supported by the data in the table.
Q #3: Which of the following ions binds to the troponin complex, initiating contraction of a muscle?

A. Sodium

B. Potassium

C. Calcium

D. Phosphorus

Answer Explanation

When a muscle cell is stimulated by a nerve impulse, calcium ions are released from the sarcoplasmic reticulum into the cytoplasm. The calcium ions bind to the troponin complex, which is a protein that regulates the interaction between actin and myosin filaments. The binding of calcium to troponin causes a conformational change that exposes the binding sites for myosin on the actin filaments. This allows the myosin heads to attach to the actin and pull the filaments past each other, resulting in muscle contraction.

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Nitrogen gas is an extremely stable molecule because its structure contains which of the following?

More Questions on TEAS 7 Science

Q #1: Which of the following statements best describes the function of erythropoietin in the human body?

Answer Explanation

Answer Explanation

Q #3: Which of the following ions binds to the troponin complex, initiating contraction of a muscle?

Answer Explanation

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