BIOCHEM MID-TERM EXAMINATION. ALL MIDTERM EXAM REVISION QUESTIONS AND CORRECT ANSWERS (GRADED A+) (100% GUARANTEE) (2024 UPDATE)
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Course
Biochem
Institution
Biochem
Okazaki fragments - ANSWER- Short fragments of DNA that are a result of the synthesis of
the lagging strand during DNA replication.
Termination of Replication - ANSWER- final stage of DNA replication; ligase ensures the
sugar-phosphate backbone is continuous
Exonuclease - ANSWER- an enzyme that...
Okazaki fragments - ANSWER- Short fragments of DNA that are a result of the synthesis of
the lagging strand during DNA replication.
Termination of Replication - ANSWER- final stage of DNA replication; ligase ensures the
sugar-phosphate backbone is continuous
Exonuclease - ANSWER- an enzyme that removes RNA primers
DNA polymerase I - ANSWER- synthesizes short DNA nucleotides in place of RNA primers
Ligase - ANSWER- the enzyme that seals DNA nucleotides generated by DNA polymerase III
and DNA polymerase I
Mitosis - ANSWER- is the part of the division process referring to the division of the nucleus
Prophase - ANSWER- chromosomes condense and become visible, spindle fibers emerge from
the centrosomes, nuclear envelope breaks down
Prometaphase - ANSWER- kinetochore proteins appear at the centromeres, mitotic spindle
microtubules attach to kinetochores
Metaphase - ANSWER- centromere are at the opposite poles of a cell, chromosomes are lined
up at the metaphase plate, each sister chromatid is attached to a spindle fiber
, Anaphase - ANSWER- sister chromatids are pulled toward the opposite poles, spindle fibers
lengthen, elongating the cell
Telophase - ANSWER- chromosomes arrive at opposite poles, a nuclear envelope starts to form
around each set of chromosomes, mitotic spindle breaks down
Cytokinesis - ANSWER- the two daughter cells are separated
Cancer - ANSWER- a disease that occurs when the cell cycle is no longer regulated
Stem cells - ANSWER- unspecialized cells that replenish by cell division without limit
Cell differentiation - ANSWER- the process of cells becoming specialized
Hematopoietic stem cells (hscs) - ANSWER- Cells that are situated primarily in the bone
marrow that are capable of both self-renewal and of giving rise to all types of blood cells.
Hscs - ANSWER- undergo cell division with out limit throughout a person's life span,
differentiate into blood cells, multipotent stem cells, differentiate into different kinds of blood
cells, once fully differentiated mature blood cells no longer divide and remain in the G0 phase
Red Blood Cells (RBC) - ANSWER- the most abundant clls in the blood, about 5 million per
microliter of blood, biconcave in shape which allows them to flow smoothly through blood vessels
Somatic cells - ANSWER- body cells
Germ cells - ANSWER- reproductive cells
Organelles - ANSWER- A tiny cell structure that carries out a specific function within the cell
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