The main function of the vacuole is to break down cellular waste in the cell
Answer with Explanation:
Two genetic concepts were discovered before 1900.
a. preservation of beneficial traits (This was discovered by Charles Darwin in 1859. This theory provided the details about how an organisms survives and adapted to new environment.)
c. calculation of Mendelian inheritance (This was discovered by George Mendel in 1865. This law provided the detail about how genetics is inherited to offspring and what happens when traits move from one generation to other generation.)
The answer is sliding filament.
Muscle fibers are made up of myosin and actin filaments that straddle one another in alternating sequence. The myosin has myosin heads that act on the actin and enable the myofibrils to slide across each other in opposite directions. This causes the muscle to shorten hence contract. This is an energy-requiring process (hence hydrolyses ATP) and also requires calcium ions. In an animation, the myosin would seem to ‘walk’ on the actin filament.
Answer:
Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, which are not found within animal cells. The cell wall is a rigid covering that protects the cell, provides structural support, and gives shape to the cell.
Chromosomes are contained within the nucleus, so the answer is D.