Answer the following question given this paragraph: Which of the following statements about the male reproductive system is false? a. The vas deferens carries sperm from the testes to the penis. Sperm mature in seminiferous tubules in the testes. Both the prostate and the bulbourethral glands produce components of the semen. The prostate gland is located in the testes. Sperm mature in seminiferous tubules that are coiled inside the testes, as illustrated in Figure 43.8. The walls of the seminiferous tubules are made up of the developing sperm cells, with the least developed sperm at the periphery of the tubule and the fully developed sperm in the lumen. The sperm cells are mixed with "nursemaid" cells called Sertoli cells which protect the germ cells and promote their development. Other cells mixed in the wall of the tubules are the interstitial cells of Leydig. These cells produce high levels of testosterone once the male reaches adolescence. When the sperm have developed flagella and are nearly mature, they leave the testicles and enter the epididymis, shown in Figure 43.8. This structure resembles a comma and lies along the top and posterior portion of the testes; it is the site of sperm maturation. The sperm leave the epididymis and enter the vas deferens (or ductus deferens), which carries the sperm, behind the bladder, and forms the ejaculatory duct with the duct from the seminal vesicles. During a vasectomy, a section of the vas deferens is removed, preventing sperm from being passed out of the body during ejaculation and preventing fertilization. Semen is a mixture of sperm and spermatic duct secretions (about 10 percent of the total) and fluids from accessory glands that contribute most of the semen's volume. Sperm are haploid cells, consisting of a flagellum as a tail, a neck that contains the cell's energy-producing mitochondria, and a head that contains the genetic material. Figure 43.9 shows a micrograph. Q: Where do sperm go after leaving the testicles and before entering the vas deferens? Choices: - clitoris - anus - skin - epididymis A:
epididymis
(Question)
Answer the following question given this paragraph: Wavelength is the distance between corresponding points of adjacent waves. Wavelengths of electromagnetic waves range from many kilometers to a tiny fraction of a millimeter. Q: The distance between corresponding points of adjacent waves is known as the __________ Choices: - absorption - bandwidth - amplitude - wavelength A:
(Answer)
wavelength
Ques: Answer the following question given this paragraph: Law stating that pressure in a moving fluid is less when the fluid is moving faster. Q: What is the name of the mineral that contains calcium, carbon and oxygen? Choices: - quartz - granite - cobalt - calcite A:
Ans: calcite
(Q).
Answer the following question given this paragraph: Chromosomes, like those shown here, must form prior to cell division, to ensure that each daughter cell receives a complete set of genetic material. Each chromosome is made of two identical sister chromatids. Each chromatid is 1/2 of the "X. " Essentially, each daughter cell receives half of each "X-shaped" chromosome. Q: Each what is made of two identical sister chromatids? Choices: - helix - genome - gene - chromosome A:
(A).
chromosome
Ques:Answer the following question given this paragraph: A concave mirror is shaped like the inside of a bowl. The type of image it forms depends on where the object is relative to the focal point. The image may be real, upside down, and reduced in size; or it may be virtual, right-side up, and enlarged. Q: What do you call a mirror shaped like the inside of a bowl? Choices: - convex - circular - curved - concave A:

Ans:concave
Question: Answer the following question given this paragraph: Sexual reproduction involves two parents. As you can see from Figure below , in sexual reproduction, parents produce reproductive cellscalled gametes that unite to form an offspring. Gametes are haploid cells. This means they contain only half the number of chromosomes found in other cells of the organism. Gametes are produced by a type of cell division called meiosis, which is described in detail below. The process in which two gametes unite is called fertilization . The fertilized cell that results is referred to as a zygote . A zygote is diploid cell, which means that it has twice the number of chromosomes as a gamete. Q: What type of cell division produces gametes? Choices: - mutations - apoptosis - mitosis - meiosis A:
Answer:
meiosis