Answer:
Nucleus and acrosome
Explanation:
Human sperm is the male gamete or sex cell formed by spermatogenesis. It is made of a head, neck, a middle piece and a tail. The sperm head consists of a haploid nucleus and anterior to nucleus, an acrosome. The nucleus contains DNA and nuclear protein and it transfers genetic features from the male to the next generation. The acrosome contains an important enzymes, hyaluronidase and acrosin. These enzymes help to enter head into an ovum.
Answer:
E. Attention; perception
Explanation:
Attention:
Its simply refered to as the process of focusing a certain measure of cognitive resources needed to obtain the significant results from transforming inputs on sensory or mental incidents
Perception:
This are processes needed to process each daily stimuli an individual encounters. It relies on understanding several sensations by receiving and processing stimuli gotten from the environment.
Answer:
Few, if any aquatic organisms will be able to survive in these regions, they will become dead zones
Answer:
The difference is the organization of the fibers located in the extracellular matrix.
Explanation:
The connective tissue gives support and structure to other tissues and organs. Diverse cells, fibers and ground substance (matrix) are components of the connective tissue. The connective tissue is classified in: loose or dense. As their names imply, loose connective tissue has fewer cells and fibers per area whereas in the dense connective tissue the cells and fibers are tightly packed. The dense connective tissue is further divided into regular and irregular. The main difference is the arrangement of the fibers in these tissues. In the regular dense connective tissue, all the fibers are oriented in one direction. In contrast in the irregular dense connective tissue the fibers have multiple orientations
Answer:
Blood is stored within blood vessels in a closed circulatory system, which circulates unidirectionally (in one direction) from the heart around the systemic circulatory route until returning to the heart.
Explanation: