The main reason that the spores of disease-causing bacteria are dangerous is that they

The main reason that the spores of disease-causing bacteria are dangerous is that they are very difficult to destroy. If the bacteria is not suited in the condition state of the environmental, other kinds transform to an inactive state. They advance with a hard outer covering and look out for the suitable environmental conditions. This lie dormant bacterium is known as spores. Spores are more difficult to destroy than those bacteria that are active for they have a harder outer covering.

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.

explanation:

answer; the correct answer is conflict- related aggression; +