ATI TEAS 7
Biology
1. What is the building block of RNA?
- A. Amino acid
- B. Nucleotide
- C. Protein
- D. Fatty acid
Correct answer: B
Rationale: Rationale: A) Amino acid: Amino acids are the building blocks of proteins, not RNA. B) Nucleotide: Nucleotides are the building blocks of RNA. A nucleotide consists of a nitrogenous base (adenine, guanine, cytosine, or uracil in RNA), a sugar (ribose in RNA), and a phosphate group. C) Protein: Proteins are made up of amino acids, not nucleotides. D) Fatty acid: Fatty acids are components of lipids, not RNA.
2. Which type of epithelial tissue lines the inner lining of your intestines, responsible for absorption?
- A. Stratified squamous
- B. Simple columnar
- C. Stratified cuboidal
- D. Transitional epithelium
Correct answer: B
Rationale: The correct answer is B: Simple columnar. Simple columnar epithelial tissue is well-suited for absorption because of its single layer of tall, column-shaped cells with microvilli on the surface, increasing surface area for absorption. This type of tissue is found in the inner lining of the intestines where absorption of nutrients occurs. Stratified squamous epithelium is more protective and found in areas subject to wear and tear, like the skin. Stratified cuboidal and transitional epithelium are not typically involved in absorption processes. Therefore, simple columnar epithelial tissue is the most appropriate choice for lining the inner surface of the intestines for absorption.
3. What does the term "terminal velocity" refer to in physics?
- A. Maximum velocity reached by an object in free fall
- B. Velocity when the object is at rest
- C. nstantaneous velocity of an object
- D. Velocity only reached by heavy objects
Correct answer: a
Rationale: Terminal velocity is the constant velocity achieved by an object falling through the atmosphere when the force of air resistance equals the force of gravity.
4. In the sentence "The house was dilapidated," what effect does the word "dilapidated" have on the reader's understanding?
- A. Creates a sense of mystery.
- B. Emphasizes the large size of the house.
- C. Suggests the house is in poor condition.
- D. Implies the house is haunted.
Correct answer: C
Rationale: The word "dilapidated" specifically describes the house's deteriorating state.
5. What property of a substance refers to its ability to be drawn into thin wires?
- A. Conductivity
- B. Ductility
- C. Viscosity
- D. Malleability
Correct answer: b
Rationale: Ductility refers to a substance's ability to be drawn into thin wires without breaking.
6. What is the process of cells responding to external stimuli, such as chemicals, temperature, or touch, called?
- A. Signal transduction
- B. Homeostasis
- C. Adaptation
- D. Metabolism
Correct answer: A
Rationale: Rationale: A) Signal transduction is the process by which cells respond to external stimuli, such as chemicals, temperature, or touch. When a cell receives a signal from its environment, it initiates a series of molecular events that ultimately lead to a specific cellular response. This process involves the transmission of signals from the cell surface to the interior of the cell, where they can trigger various cellular activities. B) Homeostasis refers to the ability of an organism to maintain internal stability and balance in response to external changes. While signal transduction plays a role in maintaining homeostasis by allowing cells to respond to external stimuli, it is not the specific process of cells responding to external stimuli. C) Adaptation is the process by which an organism adjusts to its environment over time through genetic changes or behavioral modifications. While cells can adapt to changes in their environment, the process of cells responding to external stimuli
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