Scientific Foundation 2025-2026 at New York Online Electtonic Library

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Free Scientific Foundation 2025-2026 at New York Online Electtonic Library Questions

1. 18. Which organelles in the cell synthesize protein? Select one:
  • a. Endoplasmic reticulum
  • b. Ribosomes
  • c. Plasma membrane
  • d. Mitochondria

Explanation

Explanation of Correct Answer: b. Ribosomes: Ribosomes are the cellular structures responsible for protein synthesis. They read messenger RNA (mRNA) sequences and translate them into chains of amino acids, forming proteins. Ribosomes can be found floating freely in the cytoplasm, where they make proteins for internal cell use, or attached to the rough endoplasmic reticulum, where they produce proteins destined for secretion or membrane incorporation.
2. 33. Which body cavity contains the reproductive organs? Select one:
  • a. Abdominal
  • b. Pelvic
  • c. Spinal
  • d. Thoracic

Explanation

Explanation of Correct Answer: b. Pelvic: The pelvic cavity is located below the abdominal cavity and contains the reproductive organs, urinary bladder, and part of the large intestine. In females, it includes the uterus, ovaries, and fallopian tubes; in males, it contains the prostate gland and seminal vesicles. This cavity provides protection and structural support for organs involved in reproduction and excretion.
3. 20. Which body systems work together to enable us to move about and provide support? Select one:
  • a. Skeletal and Muscular
  • b. Skeletal and Lymphatic
  • c. Skeletal and Digestive
  • d. Muscular and Respiratory

Explanation

Explanation of Correct Answer: a. Skeletal and Muscular: The skeletal and muscular systems work together to form the musculoskeletal system, which provides structure, support, protection, and movement. Bones act as levers and points of attachment for muscles, while muscles contract to move the bones at joints. This cooperation allows for all voluntary body movements, posture maintenance, and protection of vital organs. Without one, the other would be ineffective in enabling motion or stability.
4. 12. If blood cells are placed in a hypertonic solution, the nurse would expect the cells will: Select one:
  • a. remain normal
  • b. shrink
  • c. distend
  • d. burst

Explanation

Explanation of Correct Answer: b. Shrink: A hypertonic solution has a higher solute concentration than the fluid inside the red blood cells. When blood cells are placed in such a solution, water moves out of the cells by osmosis to balance the concentration gradient. As water leaves, the cells lose volume and shrink, a process known as crenation. This can impair cellular function and oxygen transport.
5. 29. What is a protein that speeds up the rate of a chemical reaction called? Select one:
  • a. An antibody
  • b. A cytokine
  • c. An enzyme
  • d. A hormone

Explanation

Explanation of Correct Answer: c. An enzyme: Enzymes are specialized proteins that act as biological catalysts, meaning they speed up chemical reactions without being consumed in the process. They lower the activation energy required for reactions to occur, allowing essential cellular processes like digestion, metabolism, and DNA replication to happen efficiently at normal body temperatures. Each enzyme is specific to a particular reaction or type of molecule, known as its substrate.
6. 3. The nurse knows that a patient who has a blood pH of 7.55 is experiencing a/an ——— blood pH. Select one:
  • a. neutral
  • b. normal
  • c. acidic
  • d. alkaline

Explanation

Explanation: The normal range for blood pH is 7.35 to 7.45. This balance is crucial for maintaining proper enzyme activity, oxygen delivery, and overall metabolic function. ● A pH below 7.35 indicates acidosis, meaning the blood is too acidic due to excess hydrogen ions (H⁺) or loss of bicarbonate. ● A pH above 7.45 indicates alkalosis, meaning the blood is too basic due to loss of hydrogen ions or excess bicarbonate. A blood pH of 7.55 is higher than the normal upper limit and therefore represents an alkaline (basic) condition.
7. 46. The higher the concentration of hydrogen ions, the lower pH means the solution is more of an: Select one:
  • a. Buffer
  • b. Acid
  • c. Base
  • d. Salt

Explanation

Explanation of Correct Answer: b. Acid: A solution with a high concentration of hydrogen ions (H⁺) has a low pH value, making it acidic. The pH scale ranges from 0 to 14, where values below 7 indicate acidity. The more hydrogen ions present, the stronger the acid. Examples include gastric acid (pH ≈ 2) and vinegar. Acids donate hydrogen ions in solution, which increases their concentration and lowers pH.
8.

40. In the diagram below Letter C is referring to what area of the body? Select one:

  • a. Pedal
  • B. Brachial
  • c. Occipital
  • d. Inguinal

Explanation

Explanation of Correct Answer: The label “C” in the diagram points to the foot region of the body. The term pedal refers to the area of the foot (derived from the Latin word pes, meaning foot). The pedal region includes structures such as the toes, arch, and heel, and is part of the lower extremity.
9. 23. Which of the following are considered communicable diseases? (Select all that apply.) Select one or more:
  • a. Gonorrhea
  • b. Tuberculosis
  • c. Diabetes
  • d. Varicella
  • e. Hypertension

Explanation

Explanation of Correct Answers: a. Gonorrhea: Gonorrhea is a sexually transmitted infection (STI) caused by the bacterium Neisseria gonorrhoeae. It spreads through sexual contact with an infected person’s body fluids. Because it is transmitted directly between individuals, it is classified as a communicable disease. b. Tuberculosis: Tuberculosis (TB) is caused by Mycobacterium tuberculosis and spreads through airborne droplets when an infected person coughs, sneezes, or speaks. It is highly communicable and requires infection control measures such as airborne isolation and mask use. d. Varicella: Varicella, or chickenpox, is a viral infection caused by the varicella-zoster virus. It spreads through direct contact with lesions or airborne droplets, making it a highly communicable disease, particularly among unvaccinated individuals.
10. 26. The nursing student knows that the building blocks of protein are: Select one:
  • a. Amino acids
  • b. Fatty acids
  • c. Carbonic acid
  • d. Hydrochloric acid

Explanation

Explanation of Correct Answer: a. Amino acids: Proteins are made up of smaller units called amino acids, which link together through peptide bonds to form long chains known as polypeptides. There are 20 standard amino acids, and their specific sequence determines the protein’s structure and function. Proteins play vital roles in body processes such as tissue repair, enzyme activity, and immune response. Without amino acids, protein synthesis cannot occur.

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