Answer:
metamorphic rock
Explanation:
metamorphic rock simply means that the rocks have been geophysically altered. heat is always a primary source for alteratino of rock so the heat ofmolten rock generated by hot spots can easily cause an abundance of metamorphic rocks within the system
Answer:
they are Na+, K+ and Ca2+ ion channels.
Explanation:
Ionotropic acetylcholine receptors are also called nicotinic acetylcholine receptors because beside acetylcholine (Ch) they respond to nicotine. These receptors are primary receptors in muscle for motor nerve-muscle communication that controls muscle contraction.
Two molecules of ACh are required for receptor to open. Since the receptors are linked to ion channels, the channels open. Opening of the channel allows positively charged ions to move across it: sodium enters the cell and potassium exits.
Answer:
c. Tubulin
Explanation:
Tubulin protein is polymerized to form the cylindrical structures of microtubules. Microtubules form the spindle apparatus during cell division. The spindle microtubules become attached to the kinetochores of chromosomes and mediate the alignment of chromosomes at the equator of cells during metaphase. The shortening of spindle microtubules is responsible for the movement of sister chromatids during anaphase. The same event also moves the homologous chromosomes during anaphase-I.
Any failure in the formation of the spindle apparatus would not allow the proper separation of chromosomes. Therefore, the cell with abnormal chromosome separation might have a faulty or no tubulin.
Option C
Folic acid is not a common teratogen
<u>Explanation:</u>
Teratogen - Any factor that can interrupt the growth of a fetus or embryo. Teratogens may generate a birth deformity in the child. Or a teratogen may terminate the pregnancy unmitigated. The aspects of teratogens include radiation, parental infections, drugs.
Alcohol exploitation can produce mental obstacles, distortion, germination obstacles, miscarriage, and behavioral complications in newborns. Women who have not taken the hepatitis B vaccine should be held for immunization if they are at danger of sexually dispatched disease or blood appearance. The vaccine may be administered during pregnancy. SSRI antidepressant medications is also a factor of teratogen to cause deformity to fetus growth.
It is false that constellations are only visible in certain seasons due to the revolution of the Earth toward the constellation.
