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| Section | Objectives |
|---|---|
| Mathematics | - Basic Arithmetic
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| Science | - Biology
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| Verbal Skills | - Language Usage
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NEW QUESTION # 86
A healthcare provider recommends that a patient take 200 milligrams (mg) of a pain reliever every 4 hours.
How many grams of the pain reliever should the patient have taken after 8 hours if the recommendation was followed?
(Given 1,000 mg = 1 gram.)
Answer: D
Explanation:
This is a medication dosage problem, a critical area on the NEX exam. First determine how many doses are taken in 8 hours. Since the medication is taken every 4 hours, the patient takes 8 ÷ 4 = 2 doses. Each dose is
200 mg, so the total amount taken is 200 × 2 = 400 mg. Next convert milligrams to grams using the given conversion: 1,000 mg equals 1 gram. Divide 400 ÷ 1,000 = 0.4 grams. Therefore, the correct answer is D.
Option B represents only one dose. Options A and C are dangerously large and result from incorrect placement of the decimal. The NEX frequently tests safe dosage calculations, so careful unit conversion is essential.
NEW QUESTION # 87
What are the inherited factors transmitted in an organism from generation to generation called?
Answer: D
Explanation:
Inherited factors that are passed from parents to offspring are known as an organism's genotype. The genotype refers to the genetic makeup of an organism, including the specific alleles inherited for each trait.
Heterozygote and homozygote describe specific combinations of alleles but do not refer to inherited factors as a whole. Phenotype refers to the observable traits of an organism, which result from the interaction between genotype and environment. The NEX Science exam often tests the distinction between genotype and phenotype, emphasizing that genotype represents the genetic instructions while phenotype represents the physical expression of those instructions.
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NEW QUESTION # 88
During translation, the cell produces proteins by using information from
Answer: B
Explanation:
Translation is the process by which proteins are synthesized at the ribosome. During this process, the genetic code carried by messenger RNA (mRNA) is read in groups of three nucleotides called codons. Each codon specifies a particular amino acid, which is added to a growing protein chain. Transfer RNA (tRNA) brings amino acids to the ribosome but does not contain the original instructions. Ribosomal RNA (rRNA) forms the structural and functional core of the ribosome, and siRNA is involved in gene silencing rather than protein synthesis. Because mRNA carries the direct genetic instructions copied from DNA during transcription, it is the correct source of information used during translation. The NEX Science section frequently tests understanding of the central dogma of molecular biology: DNA # RNA # protein.
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NEW QUESTION # 89
According to the Centers for Disease Control and Prevention (CDC), approximately 7% of children and adolescents ages 6 to 19 in the United States have a high total cholesterol. If 120,000 children and adolescents in that age range were sampled, approximately how many of them would have a normal total cholesterol?
Answer: A
Explanation:
This is a percentage complement problem. If 7% of children have high cholesterol, then the remaining percentage with normal cholesterol is 100% # 7% = 93%. Convert 93% to a decimal by moving the decimal point two places to the left: 0.93. Multiply this decimal by the total number of children sampled: 0.93 ×
120,000 = 111,600. Therefore, approximately 111,600 children would have normal cholesterol levels, making option D correct. Option A incorrectly calculates 7% instead of the complement. Option C represents 70%, not 93%. Option B is close but incorrect due to rounding. NEX math questions often assess whether students understand that "normal" refers to the remainder after subtracting the affected group.
NEW QUESTION # 90
Word Knowledge
The word"accurate"most nearly means:
Answer: D
Explanation:
"Accurate" means correct or free from error. Option B is the best synonym. The other options describe inaccuracy or uncertainty. Accuracy is a high-frequency NEX vocabulary word, especially in healthcare contexts.
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NEW QUESTION # 91
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