ATI TEAS 7
Biology
1. What is the term for a group of organisms living in the same place and interacting with each other?
- A. Ecosystem
 - B. Community
 - C. Population
 - D. Niche
 
Correct answer: B
Rationale: Rationale: - A) Ecosystem refers to a biological community of interacting organisms and their physical environment. - B) Community specifically refers to a group of organisms of different species living in the same place and interacting with each other. - C) Population refers to a group of individuals of the same species living in the same area. - D) Niche refers to the role or function of an organism or species within an ecosystem. In this context, the term for a group of organisms living in the same place and interacting with each other is best described as a community because it involves multiple species interacting within a shared habitat.
2. Which of the following colligative properties refers to the elevation of the boiling point of a solution?
- A. Freezing point depression
 - B. Vapor pressure lowering
 - C. Osmotic pressure
 - D. Boiling point elevation
 
Correct answer: A
Rationale: The correct answer is A: Freezing point depression. Colligative properties are properties that depend on the number of solute particles in a solution, not the type of solute. Freezing point depression is the phenomenon where the freezing point of a solvent is lowered when a solute is added, while boiling point elevation is the opposite effect where the boiling point of a solution is raised. Therefore, the question specifically asked for the colligative property that refers to the elevation of the boiling point, making "Freezing point depression" the correct answer.
3. Which of these organisms belongs to the kingdom Protista?
- A. Coral
 - B. Yeast
 - C. Euglena
 - D. Mushroom
 
Correct answer: C
Rationale: Rationale: A) Coral belongs to the kingdom Animalia, specifically in the phylum Cnidaria. B) Yeast belongs to the kingdom Fungi. C) Euglena is a unicellular organism that belongs to the kingdom Protista. It is a type of protist that has characteristics of both plants and animals. D) Mushroom belongs to the kingdom Fungi. Therefore, among the options provided, only Euglena belongs to the kingdom Protista.
4. Which of the following is an example of an unsaturated fatty acid?
- A. Stearic acid
 - B. Palmitic acid
 - C. Oleic acid
 - D. Butyric acid
 
Correct answer: C
Rationale: Oleic acid is an unsaturated fatty acid, containing at least one double bond in its hydrocarbon chain. The other choices are saturated fatty acids.
5. What is the scientific term for a broken bone?
- A. Osteoporosis
 - B. Fracture
 - C. Sprain
 - D. Dislocation
 
Correct answer: B
Rationale: The correct answer is B: 'Fracture.' A fracture is the scientific term used to describe a broken bone. Osteoporosis (A) is a condition where bones become weak and brittle, increasing the risk of fractures. A sprain (C) is an injury to a ligament, not a bone. A dislocation (D) occurs when the bones in a joint are forced out of their normal position, but it is not the term for a broken bone.
6. Which of the following statements best describes Newton's first law of motion?
- A. An object in motion tends to stay in motion, and an object at rest tends to stay at rest unless acted upon by an external force.
 - B. Force equals mass times acceleration.
 - C. For every action, there is an equal and opposite reaction.
 - D. The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
 
Correct answer: A
Rationale: Newton's first law of motion, also known as the law of inertia, states that an object in motion will remain in motion, and an object at rest will remain at rest unless acted upon by an external force. This principle highlights the concept of inertia, which is the tendency of objects to resist changes in their state of motion. Option A accurately captures this fundamental aspect of Newton's first law. Options B, C, and D describe Newton's second law, third law, and the relationship between force, acceleration, and mass, respectively.
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