Copying of the information in DNA into mRNA, which can leave the nucleus, is called
transcription
replication
The Correct Answer is A
A. transcription: Transcription is the process by which the DNA sequence of a gene is copied into messenger RNA (mRNA). This mRNA then exits the nucleus and carries the genetic code to ribosomes for protein synthesis.
B. replication: Replication is the process of copying the entire DNA molecule to produce two identical DNA strands during cell division. It does not produce mRNA and does not involve transporting genetic information out of the nucleus,
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. fibroblast:Fibroblasts are connective tissue cells found in the dermis, responsible for producing collagen and extracellular matrix. They are not located in the epidermis.
B. stem cells:Epidermal stem cells are located in the stratum basale and are responsible for continuously producing new keratinocytes to replace shed cells.
C. melanocytes:Melanocytes are pigment-producing cells found in the stratum basale of the epidermis, providing melanin to protect against UV damage.
D. dendritic cells:Dendritic cells, also called Langerhans cells, are immune cells in the epidermis that detect pathogens and participate in immune responses.
E. keratinocytes:Keratinocytes are the predominant cell type in the epidermis, producing keratin and forming the protective outer layer of the skin.
Correct Answer is B
Explanation
False:Pyruvic acid is converted into lactic acid only under anaerobic conditions, when oxygen is insufficient for the mitochondria to carry out aerobic respiration. When oxygen is present, pyruvic acid enters the mitochondria and is converted into acetyl CoA, which then enters the Krebs cycle for aerobic respiration. Lactic acid formation does not occur under these oxygen-rich conditions.
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