Cellular <u>Metabolism</u> is all of the chemical reactions in cells.
- <u><em>Definition:</em></u><em> Cell metabolism is the series of processes that take place in living organisms to sustain those organisms.</em>
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The deed of trust is most closely associated with title theory states. A title theory state employs that a deed of trust instrument rather than a mortgage. In this theory the borrower has equitable title but does not keep the title of the property during the loan term.
Answer:
C. repressible
Explanation:
The trp operon in bacteria is a repressible operon. The regulatory gene codes for repressor protein. In the presence of tryptophan, the repressor (inactive) binds with tryptophan and gets activated. This active repressor attaches with operator and prevent polymerase to bind and thus inhibiting transcription of genes in the operon.
The mutant strain cannot attach to operator (trpO+) but it can make dimers. As the operator is mutated so it prevent binding of repressor to operator. Thus, expression of the trp operon is repressible.
Answer:
f. 1- Hb; 2- dissolved in plasma
Explanation:
Transport of oxygen in the body occurs in two way; oxygen bound to hemoglobin and oxygen dissolved in plasma.
1. Bound to hemoglobin
:
Hemoglobin, or Hb, is a protein molecule found in red blood cells and is responsible for the colour of red blood cells. It is composed of four subunits of two types of the protein globin: two alpha subunits and two beta subunits. Each subunit surrounds a central heme group (red in color) that can bind one oxygen molecule.Therefore, each hemoglobin molecule can bind and transport four oxygen molecules. About 98.5% of oxygen is transported in the body bound to hemoglobin.
2. Oxygen is only fairly soluble in blood plasma. As a result, only 1.5 percent of oxygen in the blood is dissolved and transported in blood plasma.
Answer:
DNA polymerase
Explanation:
The process in which DNA make its copies is called DNA replication.
It is true that DNA do not have any catalytic activity in the cells but there are several enzymes which participate in the process of DNA replication and performs different functions. DNA Polymerase is one of the key enzyme that participate in the process and catalyzes the formation of phosphodiester bonds between adjacent nucleotides in the DNA.
Arthur Kornberg in 1956 discovered DNA polymerase along with his colleague in Escherichia coli. DNA Polymerase catalyzes the addition of phosphodiester bonds with the help of formation of hydrogen bonds between the adjacent strands of DNA and build the backbone of DNA. Other functions of DNA polymerase involves synthesis of DNA from the RNA primers , helps in the elongation of leading strand, and DNA sequencing.
Hence, DNA polymerase is catalyzes the formation of phosphodiester bonds between adjacent nucleotides in the DNA.