ATI TEAS 7
TEAS 7 practice test free science
1. Which type of RNA carries the genetic code from DNA to ribosomes?
- A. Ribosomal RNA (rRNA)
- B. Transfer RNA (tRNA)
- C. Messenger RNA (mRNA)
- D. Deoxyribonucleic acid (DNA)
Correct answer: C
Rationale: - Messenger RNA (mRNA) carries the genetic information from DNA in the cell's nucleus to the ribosomes in the cytoplasm, where protein synthesis occurs. - Ribosomal RNA (rRNA) is a component of the ribosomes where protein synthesis takes place. - Transfer RNA (tRNA) is responsible for bringing amino acids to the ribosomes during protein synthesis. - Deoxyribonucleic acid (DNA) is the genetic material that contains the instructions for building and maintaining an organism. DNA is transcribed into mRNA before being translated into proteins.
2. What are the four main regions of the stomach?
- A. Pylorus, cecum, fundus, body
- B. Cardia, fundus, body, pylorus
- C. Duodenum, jejunum, ileum, cecum
- D. Cardia, fundus, body, ileum
Correct answer: B
Rationale: The correct answer is B: Cardia, fundus, body, pylorus. The four main regions of the stomach are the cardia (where food enters), fundus (upper part), body (largest part), and pylorus (exit part to the small intestine). These regions play specific roles in the digestion process. Choice A is incorrect because the cecum is part of the large intestine, not the stomach. Choice C lists parts of the small intestine, not the stomach. Choice D is incorrect as the ileum is the last part of the small intestine, not a region of the stomach.
3. What macromolecules are proteins that speed up chemical reactions and act as biological catalysts?
- A. Lipids
- B. Enzymes
- C. Carbohydrates
- D. Nucleic acids
Correct answer: B
Rationale: Enzymes are proteins that act as biological catalysts, speeding up chemical reactions without being consumed in the process. Lipids, carbohydrates, and nucleic acids do not serve as proteins that function as catalysts; they have different biological roles. Lipids are primarily used for energy storage, structural components, and signaling molecules. Carbohydrates are mainly for energy storage and providing structural support. Nucleic acids are involved in genetic information storage and transfer. Therefore, the correct answer is B: Enzymes.
4. Assuming this statement is true, which of the answer choices is a logical conclusion?
- A. Whole language is more effective at teaching people to read than phonics.
- B. Phonics is more effective at teaching people to read than whole language.
- C. Literacy rates will probably continue to decline over the next 15 years.
- D. The definition of what it means to be literate is much stricter now.
Correct answer: B
Rationale: If we consider the information provided in the extract that literacy rates were higher when phonics was predominantly used and have declined since whole language programs became more popular, it logically follows that phonics is more effective at teaching people to read than whole language. Choice A is incorrect as the extract suggests the opposite. Choice C cannot be concluded based on the information provided; it is an assumption beyond the scope of the data. Choice D is also unrelated to the information given and does not logically follow from the provided statement.
5. Which of the following is the plural of the word chief?
- A. Chiefs
- B. Chieves
- C. Chievs
- D. Chiefes
Correct answer: A
Rationale: The correct answer is 'Chiefs.' When making the word 'chief' plural, the correct form is 'Chiefs.' Choices B, C, and D are incorrect as they do not follow the standard rules for forming plurals in English. 'Chieves,' 'Chievs,' and 'Chiefes' are not valid plural forms of 'chief.' It's important to understand the basic rules of pluralization in English to form correct plural nouns.
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