The correct answer is:
a cell wall is only included on the plant cell
the cell membrane is included in both plant and animal cells
Explanation:
The cell wall is the outer most integument of the cell. The cell wall covers the cell membrane. The cell membrane is also known as the plasma membrane or plasmalemma. There is no another name for the cell wall. The cell membrane is being in almost all types of cells.
The purpose of the cell membrane is the equivalent as that of the skin. It leaves the elements inside the cell from the outside. The cell membrane provides assistance to the cytoskeleton of the cell, gives shape to the cell, and helps in the formation of tissues by adding the matrix located in the extracellular. It allows the passage of a certain substance.A cell membrane is incorporated by the cell wall which forms the outer most integument.
A basic tenet of modern biology, first stated by Matthias Schleiden and Theodor Schwann in 1838–39, that cells<span> are the basic units of structure and function in living organisms. ... A </span>theory<span> of heredity must be reconciled with the </span>cell theory<span>.</span>
Answer:
5' --> 3'
Explanation:
New nucleotides are added to the hydroxide group on the ribose sugar side. That is the 3' side.
The right answer is A) Trisomy
Aberrant karyotypes containing an abnormal number of chromosomes are known in the human species. The best-known (and most common) chromosomal abnormality is trisomy 21, which is responsible for Down syndrome (mongolism). There are others such as Turner syndrome (woman with a single X chromosome) or Klinefelter syndrome (man XXY).
These abnormalities originate from the non-disjunction of the chromosomes of a pair of homologues during metaphase I of meiosis. At the end of division I, a daughter cell contains the two chromosomes of the pair considered and the other cell does not contain a chromosome of this pair. A similar result can be obtained during a bad distribution of chromatids during anaphase II.
After fertilization from a gamete of this type, a trisomy or a monosomy is obtained.
Answer:
The middle carbon atom of pyruvate in the TCA cycle becomes the carboxyl carbon of acetate and hence the newly added (upper) carboxyl group in citrate
Explanation:
Before entering the TCA cycle, pyruvate is converted into Acetyl-CoA by oxidative decarboxylation of pyruvate. 1st two carbons of glucose to be fully oxidized. This reaction is catalyzed by Pyruvate dehydrogenase.
The middle carbon atom of the pyruvate in the TCA cycle becomes the carboxyl carbon of the acetate as the carboxyl group is removed from the pyruvate , releasing CO2. NAD is reduced to NADH. Acetyl group is transferred to coenzyme-A , resulting in acetyl coA
