Which list best describes what should be worn by students in a biology lab where pouring chemicals into beakers is involved?
a long-sleeved shirt, safety glasses, protective gloves, and sandals
a long-sleeved shirt, safety glasses, protective gloves, and closed shoes
a lab coat, safety glasses, protective gloves, and sandals
a lab coat, safety glasses, protective gloves, and closed shoes

Option (d) is the correct answer.

Explanation:

In a laboratory, while performing an experiment it is necessary to follow necessary safety measures so that any misshapen may not result in a serious injury.

Therefore, when we pour chemicals into a beaker then it is advisable that we should be wearing safety glasses so that any spurting won't let the chemical to enter in our eyes. Protective gloves will save our hands from coming directly in contact with the acid.

Whereas a lab-coat and closed shoes will protect our rest of the body from the chemicals.

Thus, we can conclude that a lab coat, safety glasses, protective gloves, and closed shoes is the list of materials to be worn while performing an experiment.

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; /// i believe that the correct answer is ( monophasic ); ethinyl estradiol- ethynodiol diacetate is a monophasic oral contraceptive agent; ///