Biology, 15.11.2019 19:31 ineedhelp2285

This system relates to the structure and support of an organism. it is made of salts and proteins and found in vertebrate animals.

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The skeletal system relates to the structure & support of organisms; made of salts and proteins which are found in vertebrate animals and also protects internal organs

Answer from: kev71

Skeletal System

Explanation:

The skeletal system of the body helps the body in their movement and support. The skeletal system of the body is made of salts and proteins.

The skeletal system is the basic structure which provides the body its structure. The main function of this system is to help in movement of the body like bending, walking, sitting, et cetera.

The main constituents of bone is salts of calcium and phosphate. This makes the bones so strong that it can handle weight of the whole body.

Answer from: Quest

fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

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