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PDF Download HESI A2 BIOLOGY AND A&P VOCABULARY EXAM
QUESTIONS
Actual Qs and Ans Expert-Verified Explanation
This Exam contains:
-Guarantee passing score -100 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation
Question 1: FDA
Answer:
Food Drug Administration
Question 2: Gene Insertion
Answer:
The addition of one or more copies of normal gene into a defective chromosome.
Question 3: Haploid Cell
Answer:
A cell containing one set, ot half the usual (diploid) number, of chromosomes.
Question 4: Growth Factor
Answer:
A serum protein that stimulates cell division when it binds to its cell-surface receptor.
Question 5: Autosome
Answer:
A chromosome that is not involved in sex de-termination.
Question 6: Mutagen
Answer:
Any agent or process that can cause mutations.
Question 7: In Situ
Answer:
Refers to performing assays or manipulations with intact tissues.
Question 8: Carcinogen
Answer:
A substance that induces cancer.
Question 9: Catalytic RNA (ribozyme)
Answer:
A natural or synthetic RNA molecule that cuts an RNA substrate.
Question 10: Bacterium
Answer:
A single-celled, microscopic prokaryotic organism; a single cell organism without a distinct nucleus
Question 11: DNA sequencing
Answer:
procedures for determining the nucleotide sequence of a DNA fragment.
Question 12: Centromere
Answer:
the central portion of the chromosome to which the spindle fibers attach during mitotic and meiotic division.
Question 13: Hemophilia
Answer:
An x-linked recessive genetic disease, caused by a mutation in the gene for factor IX (hemophilia B), which leads to abnormal blood clotting.
Question 14: Crossing-over
Answer:
The exchange of DNA sequences between chromatids of homologous chromosomes during meiosis.
Question 15: Antibody
Answer:
An immunoglobulin protein produced by B-lymphocytes of the immune system that binds to a specific antigen molecule.
Question 16: Biologics
Answer:
Agents, such as vaccines, that give immunity to disease or harmful biotic stresses.
Question 17: Homologous Recombination
Answer:
The exchange of DNA (fragements) between two DNA molecules or chromatids of of paired chromosomes (during crossing over) at the site of identical nucleotide sequences.
Question 18: Antibiotic
Answer:
A class of natural and synthetic compounds that inhibit the growth of or kill other microorganisms.
Question 19: Lysis
Answer:
The destruction of the cell membrane.
Question 20: Genetic Engineering
Answer:
the manipulation of an organism's genetic endowment by introducing or eliminating specific genes through modern molecular biology techniques. A broad definition of genetic engineering also includes selective breeding and other means of artificial selection.
Question 21: Molecular Biology
Answer:
The study of the biochemical and molecular interactions within living cells.
Question 22: In Vivo
Answer:
Refers to biological processes that that take place within a living organism or cell.
Question 23: Ovum
Answer:
A female Gamete.
Question 24: Chemotherapy
Answer:
A treatment for cancers that involves ad-ministering chemicals toxic to malignant cells.
Question 25: Electrophoresis
Answer:
The technique of separating charged mol- eclues in a matrix which is applied an electrical field.
Question 26: Chloramphenicol
Answer:
An antibiotic that interferes with protein synthesis
Question 27: Cross-pollination
Answer:
Fertilization of a plant from a plant with a different genetic makeup.
Question 28: Dominant (-acting) oncogene
Answer:
A gene that stimulates cell proliferation and contributes to oncogenesis when present in a single copy.
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