TEAS Test 7 science quizlet

TEAS Test 7 science quizlet Related

Review TEAS Test 7 science quizlet related questions and content

Identify the function NOT attributed to the lymphatic system.

  • A. Fluid drainage from tissues
  • B. Immune response via white blood cell production
  • C. Nutrient transport throughout the body
  • D. Waste removal through lymph nodes
Correct Answer: C

Rationale: A) Fluid drainage from tissues: This function is attributed to the lymphatic system. Lymphatic vessels collect excess fluid from tissues and return it to the bloodstream.

B) Immune response via white blood cell production: The lymphatic system plays a crucial role in the body's immune response by producing and transporting white blood cells, such as lymphocytes, which help fight infections.

C) Nutrient transport throughout the body: Nutrient transport is primarily carried out by the circulatory system (blood vessels), not the lymphatic system. The circulatory system transports nutrients, oxygen, and hormones to cells and removes waste products.

D) Waste removal through lymph nodes: The lymphatic system helps remove waste and toxins from the body by filtering lymph through lymph nodes, where harmful substances are trapped and destroyed by immune cells.

Therefore, the function NOT attributed to the lymphatic system is C) Nutrient transport throughout the body.

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What is the main component of sweat?

  • A. Urea
  • B. Glucose
  • C. Water
  • D. Electrolytes
Correct Answer: C

Rationale: - Sweat is primarily composed of water, making up the majority of its content. Water helps regulate body temperature by evaporating from the skin's surface, which cools the body down.
- While sweat does contain small amounts of other substances like urea, glucose, and electrolytes, water is the main component that is secreted by sweat glands to help regulate body temperature during physical activity or in response to heat.

What is the scientific unit used to measure the radioactivity of a substance?

  • A. Becquerel (Bq)
  • B. Joule (J)
  • C. Newton (N)
  • D. Kelvin (K)
Correct Answer: A

Rationale: The correct answer is A: Becquerel (Bq). The Becquerel (Bq) is the scientific unit used to measure the radioactivity of a substance. It is named after Henri Becquerel, who discovered radioactivity. The Joule (J) is the unit of energy, Newton (N) is the unit of force, and Kelvin (K) is the unit of temperature. When measuring radioactivity, the Becquerel is used to quantify the rate of radioactive decay in a substance. Choices B, C, and D are incorrect as they represent units for energy, force, and temperature, respectively, not radioactivity.

Which type of muscle is characterized by involuntary contractions, is striated, and is primarily found in the heart?

  • A. Skeletal muscle
  • B. Smooth muscle
  • C. Cardiac muscle
  • D. Elastic muscle
Correct Answer: C

Rationale: The correct answer is C, Cardiac muscle. Cardiac muscle fits the description provided in the question as it exhibits involuntary contractions, striations, and is predominantly located in the heart. Skeletal muscle, while also striated, is voluntary and not involuntary like cardiac muscle. Smooth muscle lacks striations and is typically found in the walls of internal organs. Elastic muscle is not a recognized type of muscle tissue in human anatomy, making it an incorrect choice.

Which element is a critical component of DNA and RNA, essential for storing and transmitting genetic information?

  • A. Oxygen
  • B. Carbon
  • C. Nitrogen
  • D. Hydrogen
Correct Answer: B

Rationale: Carbon is the correct answer as it is a critical element in DNA and RNA, forming the backbone of these molecules. Its ability to form diverse bonds allows for efficient storage and transmission of genetic information. Oxygen, nitrogen, and hydrogen are also present in DNA and RNA but do not serve as the primary backbone element for these molecules. Oxygen is involved in the structure but not as the backbone element. Nitrogen is present in the bases of nucleotides, and hydrogen bonds help stabilize the structure.

Which organelle is responsible for the final stages of protein modification and packaging for secretion in animal cells?

  • A. Rough endoplasmic reticulum (RER)
  • B. Smooth endoplasmic reticulum (SER)
  • C. Ribosomes
  • D. Golgi apparatus
Correct Answer: D

Rationale: The Golgi apparatus is responsible for the final stages of protein modification and packaging for secretion in animal cells. After proteins are synthesized in the rough endoplasmic reticulum (RER), they are transported to the Golgi apparatus for further processing, sorting, and packaging before being sent to their final destination within or outside the cell. The smooth endoplasmic reticulum (SER) is mainly involved in lipid metabolism and detoxification processes, not protein modification. Ribosomes are the cellular organelles responsible for protein synthesis, not the final stages of protein modification and packaging for secretion, which is the role of the Golgi apparatus.

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