With weight loss, fat cells . a. decrease in number only b. decrease in both number and size c. decrease in size, but increase in number d. decrease in size only e. decrease in number, but increase in size

Explanation:

Weight loss is the process of decreasing weight of the cell and whole body. While weight loss, cell decrease in size through which the body's weight decreases.

These cells are cell made adipose tissue, these cells are  specialized in storing energy as fat in the cell. These cell  also called as Adipocytes.

The size of individual fat cells varies , increasing or decreasing with weight gain or weight loss.

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: