C. Transmits the signal toward the next neuron
.More than likely the arrow is pointing to a
LYSOSOME.Lysosomes are double membrane organelles produced by the Golgi Apparatus that contain enzymes that allow for foreign material to be dissolved when engulfed by the structure
Anaphase I begins when the two chromosomes of each bivalent (tetrad) separate and start moving toward opposite poles of the cell as a result of the action of the spindle. Notice that in anaphase I the sister chromatids remain attached at their centromeres and move together toward the poles.
A phospholipid is composed of two fatty acids, a glycerol unit, a phosphate group and a polar molecule. The phosphate group and polar head region of the molecule is hydrophillic (attracted to water), while the fatty acid tail is hydrophobic (repelled by water). When placed in water, phospholipids will orient themselves into a bilayer in which the nonpolar tail region faces the inner area of the bilayer. The polar head region faces outward and interacts with the water.
Phospholipids are a major component of cell membranes, which enclose and protect the cytoplasm and other contents of a cell. Phospholipids are also a major component of myelin, a fatty substance that is important for insulating nerves and speeding up electrical impulses in the brain. It is the high composition of myelinated nerve fibers that causes white matter in the brain to appear white.
Steroids and Waxes
LDL and HDL Particles
Illustration of a low density lipoprotein (LDL), or bad cholesterol, molecule (left) and a high density lipoprotein (HDL), or good cholesterol, molecule (right), showing their comparative sizes. JUAN GAERTNER/Science Photo Library/Getty Images
Steroids have a carbon backbone that consists of four fused ring-like structures. Steroids include cholesterol, sex hormones (progesterone, estrogen, and testosterone) produced by gonads and cortisone.
Waxes are composed of an ester of a long-chain alcohol and a fatty acid. Many plants have leaves and fruits with wax coatings to help prevent water loss. Some animals also have wax-coated fur or feathers to repel water. Unlike most waxes, ear wax is composed of phospholipids and esters of cholesterol.
Answer:
The correct answer is - option B. immovable joints connect my bones; movable joints allow my bones to move.
Explanation:
In the skeletal system, both immovable joints and movable joints are present and both have a distinct role in the body and skeletal system. The immovable joints are the joints that provide the stability to the bones that are connected and maintain the structure these joints also helps in protecting the organs.
Movable joints are the joints that are helpful in movement and allow bones that are connected to feely or up to a limit move.
Thus, the correct answer is - option B. immovable joints connect my bones; movable joints allow my bones to move.
