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TEAS 7 Science Custom TEAS Science Practice Test 1 Which of the following are used to deter...

Which of the following are used to determine a person’s DNA sequence?

A. Genes

B. Enzymes

C. Hormones

D. Blood types

Answer Explanation:

A gene is the basic physical and functional unit of heredity and it is the DNA that make up genes. Enzymes are biological catalysts that speed up metabolic and cellular reactions in our bodies. Hormones are responsible for controlling the action of certain cells or organs in our bodies. Blood types are of four types, A, B, AB, and O.

Therefore, the Correct Answer is A.

More Questions on TEAS 7 Science

  • Q #1: Pathogens Which of the following microorganisms lack their own metabolic pathways and can only reproduce inside of a host cell?

    A. Bacteria

    B. Viruses

    C. Helminths

    D. Protozoa

    Answer Explanation

    The disease-causing microorganisms are known as pathogens, which include bacteria, fungi, protozoa, worms, viruses and prions. These organisms have distinguishing cell structures from each other. The most notable difference between viruses and other pathogens is that viruses lack a metabolism mechanism of their own and ability to produce proteins encoded by their DNA or RNA. However, they viruses rely on machinery of the host cell to produce their proteins and replicate their genomes.

  • Q #2: Which of these organs is not considered an accessory digestive structure?

    A. mouth

    B. salivary glands

    C. pancreas

    D. liver

    Answer Explanation

    Accessory organs of the digestive system comprise of organs that empty secretions into the alimentary canal. These organs include salivary glands, liver, gallbladder and pancreas. The mount if path of the alimentary canal.

  • Q #3: Which of the following are used to determine a person’s DNA sequence?

    A. Genes

    B. Enzymes

    C. Hormones

    D. Blood types

    Answer Explanation

    A gene is the basic physical and functional unit of heredity and it is the DNA that make up genes. Enzymes are biological catalysts that speed up metabolic and cellular reactions in our bodies. Hormones are responsible for controlling the action of certain cells or organs in our bodies. Blood types are of four types, A, B, AB, and O.

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