Answer the following question given this paragraph: Blood is a fluid connective tissue that contains a liquid component called plasma. It also contains dissolved substances and blood cells. Red blood cells carry oxygen, white blood cells defend the body, and platelets help blood clot. Q: What do red blood cells carry? Choices: - carbon dioxide - nitrogen - hydrogen - oxygen A:
oxygen
(Question)
Answer the following question given this paragraph: Some of the pollutants from fossil fuels can be filtered out of exhaust before it is released into the air. Other pollutants can be changed to harmless compounds before they are released. Two widely used technologies are scrubbers and catalytic converters. Q: A catalytic converter filters pollutants in exhaust created by burning what before releasing it into the air? Choices: - carbon dioxide - noble gas - fossil compounds - fossil fuels A:
(Answer)
fossil fuels
Ques: Answer the following question given this paragraph: 15.4 Mollusks and Annelids The phylum Mollusca is a large, mainly marine group of invertebrates. Mollusks show a variety of morphologies. Many mollusks secrete a calcareous shell for protection, but in other species, the shell is reduced or absent. Mollusks are protostomes. The dorsal epidermis in mollusks is modified to form the mantle, which encloses the mantle cavity and visceral organs. This cavity is distinct from the coelomic cavity, which the adult animal retains, surrounding the heart. Respiration is facilitated by gills known as ctenidia. A chitinous scraper called the radula is present in most mollusks. Mollusks are mostly dioecious and are divided into seven classes. The phylum Annelida includes worm-like, segmented animals. Segmentation is both external and internal, which is called metamerism. Annelids are protostomes. The presence of chitinous hairs called chaetae is characteristic of most members. These animals have well-developed nervous and digestive systems. Polychaete annelids have parapodia that participate in locomotion and respiration. Suckers are seen in the order Hirudinea. Breeding systems include separate sexes and hermaphroditism. Q: What do many mollusks secrete for their protection? Choices: - mucus - sedimentation shell - microscopic shell - calcareous shell A:
Ans: calcareous shell
(Q).
Answer the following question given this paragraph: Mars is the fourth planet from the Sun. The Red Planet is the first planet beyond Earth's orbit. Q: Which is the fourth planet from the sun? Choices: - mars - jupiter - earth - mars A:
(A).
mars
Ques:Answer the following question given this paragraph: There are only about 25 living species of lancelets. They inhabit the ocean floor where the water is shallow. Lancelet larvae are free-swimming. The adults can swim but spend most of their time buried in the sand. Like tunicates, lancelets are filter feeders. They take in water through their mouth and expel it through an opening called the atriopore (see Figure below ). Lancelets reproduce sexually and have separates sexes. Q: Where do lancelets live? Choices: - on land - riverbeds - deep sea caves - shallow ocean water A:

Ans:shallow ocean water
Ques: Answer the following question given this paragraph: Proteins in the diet are necessary for life. Dietary proteins are broken down into their component amino acids when food is digested. Cells can then use the components to build new proteins. Humans are able to synthesize all but nine of the twenty common amino acids. These nine amino acids, called essential amino acids , must be consumed in foods. Like dietary carbohydrates and lipids, dietary proteins can also be broken down to provide cells with energy. The amino acids regarded as essential for humans are phenylalanine, valine, threonine, tryptophan, isoleucine, methionine, leucine, lysine, and histidine. Additionally, cysteine, tyrosine and arginine are required by infants and growing children. Q: Dietary proteins are broken down into what components when food is digested? Choices: - organic acids - protein acids - polymer acids - amino acids A:
Ans:
amino acids