TEAS Test 7 science

TEAS Test 7 science Related

Review TEAS Test 7 science related questions and content

Which of the following is NOT a common route of transmission for a sexually transmitted infection (STI)?

  • A. Unprotected sexual contact
  • B. Sharing contaminated needles
  • C. Deep kissing
  • D. Mother to child during childbirth
Correct Answer: C

Rationale: A) Unprotected sexual contact is a common route of transmission for sexually transmitted infections (STIs) as many STIs are spread through genital, anal, or oral sex without the use of barrier protection such as condoms. B) Sharing contaminated needles can also transmit STIs such as HIV and hepatitis B and C, especially among individuals who inject drugs. C) Deep kissing, while it can transmit certain infections like herpes simplex virus (HSV-1) or cytomegalovirus (CMV), is not a common route of transmission for most STIs. Although some STIs can be transmitted through saliva, deep kissing is not a primary mode of transmission for most STIs. D) Mother to child transmission during childbirth can occur with certain STIs such as HIV, syphilis, and herpes, where the infection can be passed from the mother to the baby during delivery. Therefore, deep kissing (option C) is the correct answer as it is not a typical route of transmission for most STIs.

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What is the role of RNA in the regulation of gene expression?

  • A. Provides energy for the process
  • B. Controls the timing and location of protein synthesis
  • C. Translates the genetic code into amino acids
  • D. Stores genetic information
Correct Answer: B

Rationale: A) RNA does not provide energy for the process of gene expression. Energy is typically provided by molecules like ATP. B) RNA plays a crucial role in controlling the timing and location of protein synthesis through processes like transcriptional regulation, RNA splicing, and post-transcriptional modifications. It helps determine when and where specific proteins are produced in the cell. C) While mRNA translates the genetic code into amino acids during the process of translation, this is not the primary role of RNA in the regulation of gene expression. D) RNA does not store genetic information in the same way that DNA does. DNA is the molecule responsible for storing genetic information in the form of genes. Therefore, option B is the most appropriate choice as it accurately describes the role of RNA in regulating gene expression.

Which of the following is the main organ responsible for absorbing nutrients?

  • A. Stomach
  • B. Small intestine
  • C. Large intestine
  • D. Pancreas
Correct Answer: B

Rationale: The small intestine is the main organ responsible for absorbing nutrients from the food we eat. It is where the majority of digestion and absorption of nutrients such as carbohydrates, proteins, fats, vitamins, and minerals occurs. The inner lining of the small intestine is covered in tiny finger-like projections called villi, which increase the surface area available for nutrient absorption. While the stomach plays a role in breaking down food into smaller particles, the actual absorption of nutrients primarily takes place in the small intestine. The large intestine mainly absorbs water and electrolytes, and the pancreas produces digestive enzymes and hormones but is not primarily responsible for absorbing nutrients.

Adipose tissue, also known as fat, serves multiple functions. Which of these is NOT a function of adipose tissue?

  • A. Insulation
  • B. Energy storage
  • C. Hormone production
  • D. Muscle movement
Correct Answer: D

Rationale: Adipose tissue serves multiple functions in the body, including insulation to regulate body temperature, energy storage in the form of triglycerides, and hormone production such as leptin and adiponectin. Adipose tissue does not directly participate in muscle movement. Muscle movement is primarily carried out by skeletal muscle tissue, which is responsible for voluntary movements and locomotion. Therefore, the correct answer is D, as adipose tissue is not involved in muscle movement.

What is the process of cells restoring damaged or lost tissues called?

  • A. Cell division
  • B. Cell differentiation
  • C. Cell growth
  • D. Cell regeneration
Correct Answer: D

Rationale: Rationale:
A) Cell division refers to the process by which a cell divides into two daughter cells.
B) Cell differentiation is the process by which cells become specialized for specific functions.
C) Cell growth is the increase in cell size or number.
D) Cell regeneration is the process of cells restoring damaged or lost tissues by replacing or repairing the damaged cells. This process is essential for healing wounds and maintaining tissue integrity.

What does the concept of punctuated equilibrium suggest?

  • A. Evolution occurs gradually through the continuous accumulation of small changes over long periods.
  • B. Evolution is characterized by long periods of relative stasis punctuated by rapid bursts of evolutionary change.
  • C. The fossil record is a complete and accurate representation of all past life forms.
  • D. Natural selection primarily favors extreme phenotypes within a population.
Correct Answer: B

Rationale: Punctuated equilibrium suggests that evolution is characterized by long periods of relative stasis punctuated by rapid bursts of evolutionary change. This concept, proposed by Stephen Jay Gould and Niles Eldredge, implies that species remain relatively unchanged for extended periods, followed by sudden bursts of rapid evolution. Option A describes the gradualism model, which is different from punctuated equilibrium. Option C is inaccurate as the fossil record is incomplete and biased. Option D is unrelated to the concept of punctuated equilibrium.

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