stem cells that can develop into many different cell types but not a complete organism are known as which of the following
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ATI TEAS 7

TEAS Practice Test Science

1. What are stem cells that can develop into many different cell types, but not a complete organism, known as?

Correct answer: C

Rationale: Pluripotent stem cells are capable of developing into many different cell types, but they cannot form a complete organism. Totipotent stem cells have the ability to give rise to all cell types in an organism, including extraembryonic tissues, enabling them to form a complete organism. Multipotent stem cells can differentiate into a limited range of cell types. Hematopoietic stem cells specifically give rise to blood cells.

2. In which of the following situations would you use formal language?

Correct answer: D

Rationale: The correct answer is D: At a Parent-Teacher meeting. A Parent-Teacher meeting is a formal setting where professional communication is expected. Using formal language in this context shows respect and professionalism. Choices A, B, and C involve informal or casual situations where using formal language may not be necessary or appropriate. Texting a friend, attending a family reunion, or Skyping with grandparents are typically more informal interactions where a more relaxed communication style is acceptable.

3. Solve the equation for the unknown. 3x + 2 = 20

Correct answer: C

Rationale: Simplify the equation step by step: Subtract 2 from both sides: 3x + 2 - 2 = 20 - 2 3x = 18 Divide both sides by 3: x = 18 รท 3 x = 6 Therefore, the correct answer is C (x = 6).

4. Which blood type is considered a universal donor?

Correct answer: D

Rationale: Blood type O is considered the universal donor because individuals with type O blood can donate red blood cells to individuals with any ABO blood type (A, B, AB, or O) without causing an adverse reaction. Type O blood lacks A or B antigens on the surface of red blood cells, minimizing the risk of an immune response when transfused into individuals with different blood types. Therefore, type O blood is in high demand for blood transfusions in emergency situations when the recipient's blood type is unknown or when there is a shortage of specific blood types. Choices A, B, and AB are not considered universal donors. Individuals with blood types A, B, or AB can only donate to individuals with compatible blood types to avoid adverse reactions since they have A and/or B antigens on the surface of their red blood cells, making them incompatible with all blood types.

5. Which part of the brain is responsible for voluntary muscle movements?

Correct answer: B

Rationale: The question inquires about the brain region responsible for voluntary muscle movements. The correct answer is the Cerebrum. The cerebrum is the main part of the brain involved in voluntary muscle control and motor coordination. The Medulla oblongata is primarily responsible for regulating vital functions like breathing and heart rate, not voluntary muscle movements. The Hypothalamus plays a role in regulating body temperature, thirst, hunger, and other homeostatic processes. The Thalamus serves as a relay station for sensory information but is not directly responsible for voluntary muscle movements.

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