Answer the following question given this paragraph: Wild male and female Sockeye salmon before spawning. Sockeye salmon are blue tinged with silver in color while living in the ocean. Just prior to spawning, both sexes turn red with green heads. Sockeye spawn mostly in streams having lakes in their watershed. The young fish spend up to three years in the freshwater lake before migrating to the ocean. Migratory fish spend from one to four years in salt water, and thus are four to six years old when they return to spawn. Navigation to the home river is thought to be done using the characteristic smell of the stream, and possibly the sun. Q: Both sexes of sockeye salmon turn red with green heads just prior to what? Choices: - dying - feeding - migrating - spawning A:
spawning
(Question)
Answer the following question given this paragraph: Many skeletal muscles are attached to the ends of bones where they meet at a joint. The muscles span the joint and connect the bones. When the muscles contract, they pull on the bones, causing them to move. Q: Where do skeletal muscles usually attach? Choices: - to cartilage - to dendrites - to the spine - end of bones A:
(Answer)
end of bones
Ques: Answer the following question given this paragraph: The external female reproductive structures are referred to collectively as the vulva . They include the labia (singular, labium ), which are the "lips" of the vulva. The labia protect the vagina and urethra, both of which have openings in the vulva. Q: What do the external female reproductive structures are collectively referred to? Choices: - cervix - Clitoris - endometrium - vulva A:
Ans: vulva
(Q).
Answer the following question given this paragraph: Most allergies can be treated with medicines. Medicines used to treat allergies include antihistamines and corticosteroids. These medicines help control the immune system when it attacks an allergen. Sometimes, allergies cause severe symptoms, a condition known as anaphylaxis. For example, they may cause the throat to swell so it is hard to breathe. Severe allergies may be life threatening. They require emergency medical care. Q: Prescribed to treat allergies, antihistamines and corticosteroids help control what system that attacks allergens? Choices: - cardiovascular - reproductive system - nervous system - immune system A:
(A).
immune system
Ques:Answer the following question given this paragraph: During crossing-over, segments of DNA are exchanged between non-sister chromatids of homologous chromosomes. Notice how this can result in an allele (A) on one chromosome being moved to the other chromosome. The four chromatids compose the tetrad, with a chiasma at the point of exchange. Q: When does exchange of dna segments happen between non-sister chromatids of homologous chromosomes? Choices: - during meiosis - during mitosis - during diversion - during crossing-over A:

Ans:during crossing-over
Question: Answer the following question given this paragraph: Erosion moves sediments after they have formed. The sediments are transported away from the place where they form. There are several agents of erosion. Flowing water moves and deposits sediments. Water erodes far more material than any other erosional agent. Wind is important as an agent of erosion. This is especially true in arid climates. Ice, in glaciers, can erode enormous quantities of sediments. Gravity as a force of erosion pulls material downhill. Q: What moves sediments after they have formed? Choices: - photosynthesis - migration - perspiration - erosion A:
Answer:
erosion