ATI TEAS 7
Biology
1. Aseptic meningitis is an inflammation of the meninges caused by:
- A. Bacteria
- B. Viruses
- C. Fungi
- D. Parasites
Correct answer: B
Rationale: Rationale: Aseptic meningitis is typically caused by viral infections, such as enteroviruses (e.g., coxsackievirus, echovirus), herpes simplex virus, varicella-zoster virus, and others. These viruses can infect the meninges, leading to inflammation and symptoms of meningitis without the presence of bacteria. While bacterial meningitis is a serious and life-threatening condition, aseptic meningitis caused by viruses is usually less severe and has a better prognosis. Fungi and parasites are less common causes of meningitis compared to bacteria and viruses.
2. What is the scientific name for the kneecap?
- A. Patella
- B. Femur
- C. Tibia
- D. Fibula
Correct answer: A
Rationale: The patella, commonly known as the kneecap, is a small, flat, triangular bone that sits at the front of the knee joint. It protects the joint from impact and helps to transmit force from the quadriceps muscle to the tibia (shinbone).
3. The layer of the skin responsible for new skin cell production is the:
- A. Stratum corneum
- B. Stratum basale
- C. Stratum granulosum
- D. Stratum spinosum
Correct answer: B
Rationale: The correct answer is B: Stratum basale. The stratum basale, also known as the basal layer or stratum germinativum, is the deepest layer of the epidermis responsible for new skin cell production through cell division. This layer contains stem cells that continuously divide and differentiate into keratinocytes, which eventually migrate to the outer layers of the epidermis. The stratum corneum (option A) is the outermost layer of the epidermis composed of dead skin cells. The stratum granulosum (option C) is the layer above the stratum basale where keratinocytes undergo changes in their structure. The stratum spinosum (option D) is a layer above the stratum basale where cells become interconnected by desmosomes. Therefore, the stratum basale is the primary layer responsible for the production of new skin cells.
4. Which verb tense is most appropriate for this sentence: "By next week, _____ finished the project."
- A. I will be finishing
- B. I will have finished
- C. I am finishing
- D. I would finish
Correct answer: B
Rationale: Option B expresses a future event completed before another future point in time (next week).
5. What is the building block of DNA?
- A. Amino acid
- B. Nucleotide
- C. Nucleotide
- D. Fatty acid
Correct answer: B
Rationale: Rationale: - Amino acids are the building blocks of proteins, not DNA. - Nucleotide is the correct building block of DNA. A nucleotide consists of a sugar (deoxyribose in DNA), a phosphate group, and a nitrogenous base (adenine, thymine, cytosine, or guanine). - The option "C) Nucleotide" is a duplicate of the correct answer "B) Nucleotide." - Fatty acids are not the building blocks of DNA; they are a type of lipid molecule.
6. What is the term for a solution that has a lower concentration of solute compared to another solution?
- A. Saturated solution
- B. Unsaturated solution
- C. Dilute solution
- D. Concentrated solution
Correct answer: C
Rationale: A dilute solution has a lower concentration of solute compared to another solution. The other choices do not accurately describe a dilute solution.
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