Question

Question 17

1. Sperm maturation occurs in tightly coiled tubules called the ________.

   a.

   epididymus

   b.

   vas deferens

   c.

   testes

   d.

   placenta

Question 22

1. During embryonic development, a human develops three germ layers: the ectoderm, endoderm and mesoderm.

   a.

   TRUE

   b.

   FALSE

Question 25

1. Queen bees produce haploid male drones through a process called ________.

   a.

   asexual reproduction

   b.

   parthenogenesis

   c.

   regeneration

   d.

   haploidy

Question 26

1. Growth factors may be given to AIDS patients in order to ________.

   a.

   increase production of white blood cells

   b.

   decrease the number of red blood cells

   c.

   produce additional clotting factors

   d.

   prevent pathogens from reproducing

Question 27

1. The first step of starch digestion is performed by ________.

   a.

   the tongue mixing food with saliva

   b.

   taste buds secreting pepsin

   c.

   amylase in the saliva

   d.

   the tongue mixing food with saliva which contains amylase

Answer 1

Question 17 - Choice a is the correct answer

The answer is the epididymis

Each epididymis is a tightly coiled tubule where sperm maturation occurs. Epididymis carries the sperm from the testes and stores the sperm till ejaculation.  

The function of vas deferens is the transportation of mature sperm to the urethra. Testes produce sperms. The placenta is a part of the female reproductive system, acts as an interface between mother and fetus, and helps in the exchange of gases, provides nutrition for the fetus, and protects the fetus.

Question 22 - TRUE

Humans are triploblastic (Body tissues developed from 3 germ layers). At the gastrulation stage of embryonic development, the embryo forms three germ layers. Endoderm is the inner layer, mesoderm is the middle layer, and ectoderm is the outer or surface layer.

Question 25 - Choice b parthenogenesis is the correct answer

Parthenogenesis is a kind of sexual reproduction where the egg is developed into a new individual without fertilization. The male drones are produced by the development of the unfertilized haploid egg of the queen. If the eggs get fertilized, then that egg develops into female diploid bees.

Question 26 - Choice a- increase production of white blood cells is the correct answer

During AIDS treatment with antiretroviral drugs, it causes anemia and cytopenia(Destruction of blood cells). So, hematopoietic growth factors are given for treating this. It helps in the production of RBCs and WBCs.

Choice b is wrong because it says decrease the number of red blood cells, we want to increase.

Question 27 - Choice d the tongue mixing food with saliva which contains amylase is the most correct answer

Salivary amylase is an enzyme that initiates the digestion of carbohydrates in the form of starches. Salivary amylase converts starch into maltose. So the first step of digestion of starch is performed by tongue by mixing of food with saliva which contains amylase.