Complete the sentences about chemical digestion with the appropriate terms. Some of the terms may be used more than once. Carbohydrate digestion begins in the with the enzyme . Protein digestion begins in the with the enzyme . Nucleic acid digestion begins in the with the enzyme . Fat digestion begins in the with the enzyme .

1. mouth , salivary amylase

2. Stomach , pepsin

3. Small intestine , pancreatic nucleases

4. Small intestine , pancreatic lipase.

Explanation:

1) Carbohydrate digestion begins in the (mouth) with the enzyme (salivary amylase).

2) Protein digestion begins in the (Stomach) with the enzyme (pepsin).

3) Nucleic acid digestion begins in the (Small intestine) with the enzyme (pancreatic nucleases).

4) Fat digestion begins in the (Small intestine) with the enzyme (pancreatic lipase).

answer; ///the correct answer to the above question is (

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: