Answer the following question given this paragraph: Animal Cells versus Plant Cells At this point, you know that each eukaryotic cell has a plasma membrane, cytoplasm, a nucleus, ribosomes, mitochondria, peroxisomes, and in some, vacuoles, but there are some striking differences between animal and plant cells. While both animal and plant cells have microtubule organizing centers (MTOCs), animal cells also have centrioles associated with the MTOC: a complex called the centrosome. Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not. The Centrosome The centrosome is a microtubule-organizing center found near the nuclei of animal cells. It contains a pair of centrioles, two structures that lie perpendicular to each other ( Figure 4.15). Each centriole is a cylinder of nine triplets of microtubules. Q: What is the microtubule-organizing center found near the nuclei of animal cells? Choices: - lysosome - spliceosome - entrosome - centrosome A:
centrosome
(Question)
Answer the following question given this paragraph: Once you start eating, saliva wets the food, which makes it easier to break up and swallow. Digestive enzymes, including the enzyme amylase, start breaking down starches into sugars. Your tongue helps mix the food with the saliva and enzymes. Q: Digestive enzymes, including which enzyme, start breaking down starches into sugars? Choices: - triglyceride - cortisol - melatonin - amylase A:
(Answer)
amylase
Ques: Answer the following question given this paragraph: Carbaminohemoglobin About 20 percent of carbon dioxide is bound by hemoglobin and is transported to the lungs. Carbon dioxide does not bind to iron as oxygen does; instead, carbon dioxide binds amino acid moieties on the globin portions of hemoglobin to form carbaminohemoglobin, which forms when hemoglobin and carbon dioxide bind. When hemoglobin is not transporting oxygen, it tends to have a bluish-purple tone to it, creating the darker maroon color typical of deoxygenated blood. The following formula depicts this reversible reaction:. Q: About 20 percent of carbon dioxide is bound by hemoglobin and is transported where? Choices: - brain tissues - intestines - bones - lungs A:
Ans: lungs
(Q).
Answer the following question given this paragraph: Each section contains a liquid crystal sample with a different liquid crystalline range. The section whose liquid crystalline range corresponds to the temperature of the body becomes translucent (here shown in green), indicating the temperature. We also see the effect of liquid crystals in nature. Iridescent green beetles, known as jewel beetles, change color because of the light-reflecting properties of the cells that make up their external skeletons, not because of light absorption from their pigment. The cells form helices with a structure like those found in cholesteric liquid crystals. When the pitch of the helix is close to the wavelength of visible light, the cells reflect light with wavelengths that lead to brilliant metallic colors. Because a color change occurs depending on a person's angle of view, researchers in New Zealand are studying the beetles to develop a thin material that can be used as a currency security measure. The automobile industry is also interested in exploring such materials for use in paints that would change color at different viewing angles. With only molecular structure as a guide, one cannot precisely predict which of the various liquid crystalline phases a given compound will actually form. One can, however, identify molecules containing the kinds of structural features that tend to result in liquid crystalline behavior, as demonstrated in Example 11. Q: Iridescent green beetles, known as jewel beetles, change color because of the light-reflecting properties of the cells that make up this? Choices: - their hairs - their wings - their scales - their external skeleton A:
(A).
their external skeleton
Ques:Answer the following question given this paragraph: Eukaryotic cells contain a nucleus and several other types of organelles. These structures are involved in many vital cell functions. Q: What type of cell contains a nucleus? Choices: - candid cell - endogenous cell - chloroplasts cell - eukaryotic cell A:

Ans:eukaryotic cell
Ques: Answer the following question given this paragraph: The placenta allows nutrients and wastes to be exchanged between the mother and fetus. The fetus is connected to the placenta through the umbilical cord. Q: What connects the fetus to the placenta? Choices: - womb - fallopian tube - amniotic sac - umbilical cord A:
Ans:
umbilical cord