Q: What do you call an incomplete outer shell of an atom? Read this paragraph and choose the correct option from the provided answers: Choices: - helium shell - motile shell - nucleic shell - valence shell A:
valence shell

(Question)
Q: The bone matrix consists of tough protein fibersmainly what? Read this paragraph and choose the correct option from the provided answers: Many people think of bones as being dead, dry, and brittle. These adjectives correctly describe the bones of a preserved skeleton, but the bones in a living human being are very much alive. As shown in Figure below , the basic structure of bones is bone matrix , which forms the underlying rigid framework of bones, formed of both compact and spongy bone. The bone matrix consists of tough protein fibersmainly collagenthat become hard and rigid due to mineralization with calcium crystals. Bone matrix is crisscrossed by blood vessels and nerves and also contains specialized bone cells that are actively involved in metabolic processes. Choices: - tissues - hemoglobin - tendons - collagen A:
(Answer)
collagen

Ques: Q: Where do birds store and moisten food that is waiting to be digested? Read this paragraph and choose the correct option from the provided answers: Birds have a sac-like structure called a crop to store and moisten food that is waiting to be digested. They also have an organ called a gizzard that contains swallowed stones. The stones make up for the lack of teeth by grinding food, which can then be digested more quickly. Both structures make it easier for the digestive system to produce a steady supply of nutrients from food. Choices: - nest - tree - gullet - crop A:
Ans: crop

(Q).
Q: The medieval catapult has a heavy ballast on one end and what on the other end? Read this paragraph and choose the correct option from the provided answers: Choices: - fragment - pivot - propellant - projectile A:
(A).
projectile

Ques:Q: Spermatogonia are the stem cells of what male sex organs? Read this paragraph and choose the correct option from the provided answers: Germ Cells The least mature cells, the spermatogonia (singular = spermatogonium), line the basement membrane inside the tubule. Spermatogonia are the stem cells of the testis, which means that they are still able to differentiate into a variety of different cell types throughout adulthood. Spermatogonia divide to produce primary and secondary spermatocytes, then spermatids, which finally produce formed sperm. The process that begins with spermatogonia and concludes with the production of sperm is called spermatogenesis. Choices: - Epididymis - Prostate - ovaries - testes A:

Ans:testes

Question: Q: What term simply means sensitive beyond normal levels of activation? Read this paragraph and choose the correct option from the provided answers: Hypersensitivities The word "hypersensitivity" simply means sensitive beyond normal levels of activation. Allergies and inflammatory responses to nonpathogenic environmental substances have been observed since the dawn of history. Hypersensitivity is a medical term describing symptoms that are now known to be caused by unrelated mechanisms of immunity. Still, it is useful for this discussion to use the four types of hypersensitivities as a guide to understand these mechanisms (Figure 21.28). Choices: - hyposensitivity - isosensitivity - monosensitivity - hypersensitivity A:
Answer:
hypersensitivity