In Prokaryote genetics, Transduction can be defined as the:
A. Use of a bacteriophage (bacterial virus) to transfer DNA between cells.
B. Naked DNA is taken up from the environment by bacterial cells.
C. The correct answer is not listed.
D. Direct transfer of DNA from one bacterial cell to another.
Answer: A. Use of a bacteriophage (bacterial virus) to transfer DNA between cells.
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Free fetal DNA (ffDNA) originates from the breakdown of fetal cells and their nuclei in the ____________________
Fill in the blank(s) with correct word
What occurs during the antigen detection stage of the antibody-mediated immune response initiated by T cell activation?
a. Cytotoxic T cells destroy body cells that are infected with a pathogen. b. Helper T cells activate an antigen-specific B cell to divide and secrete antibodies. c. A T cell displaying an antigen-specific T cell receptor (TCR) binds to the antigen on the surface of an antigen presenting cell. d. Helper T cells are activated by the TCR. e. A B cell degrades the pathogen and produces antigens.
The ultimate source of all the food we eat and the oxygen we breathe is
A) cellular respiration. B) photosynthesis. C) glycolysis. D) anaerobic metabolism.
Type of nuclear division that reduces the chromosome number from 2n to n; daughter cells receive the haploid number of chromosomes in varied combinations; also called reduction division
What will be an ideal response?