Answer the following question given this paragraph: Figure 10.14 The role of normal p53 is to monitor DNA and the supply of oxygen (hypoxia is a condition of reduced oxygen supply). If damage is detected, p53 triggers repair mechanisms. If repairs are unsuccessful, p53 signals apoptosis. A cell with an abnormal p53 protein cannot repair damaged DNA and thus cannot signal apoptosis. Cells with abnormal p53 can become cancerous. (credit: modification of work by Thierry Soussi). Q: Hypoxia is a condition of the reduced supply of what? Choices: - methane - food - nitrogen - oxygen A:
oxygen
(Question)
Answer the following question given this paragraph: Q: What causes natural ripening in fruit? Choices: - sulfur - chloride - acid - ethylene A:
(Answer)
ethylene
Ques: Answer the following question given this paragraph: Water molds are commonly found in moist soil and surface water. Many water molds are plant pathogens or fish parasites. Q: Water molds are commonly found in moist soil and where else? Choices: - methane water - standing water - crust water - surface water A:
Ans: surface water
(Q).
Answer the following question given this paragraph: has a single main root that grows down. A fibrous root system forms a dense network of roots that is closer to the soil surface. An example of a tap root system is a carrot. Grasses such as wheat, rice, and corn are examples of fibrous root systems. Fibrous root systems are found in monocots; tap root systems are found in dicots. 37 Monocots have leaves with parallel venation, and dicots have leaves with reticulate, net-like venation. 39 The process of bulk flow moves water up the xylem and moves photosynthates (solutes) up and down the phloem. 41 Gravitropism will allow roots to dig deep into the soil to find water and minerals, whereas the seedling will grow towards light to enable photosynthesis. 43 To prevent further entry of pathogens, stomata close, even if they restrict entry of CO2. Some pathogens secrete virulence factors that inhibit the closing of stomata. Abscisic acid is the stress hormone responsible for inducing closing of stomata. Q: Grasses such as wheat, rice, and corn are examples of fibrous root systems. fibrous root systems are found in monocots; tap root systems are found in these? Choices: - mosses - monocots - gymnosperms - dicots A:
(A).
dicots
Ques:Answer the following question given this paragraph: Figure 23.16 The complex process of sexual reproduction in Paramecium creates eight daughter cells from two original cells. Each cell has a macronucleus and a micronucleus. During sexual reproduction, the macronucleus dissolves and is replaced by a micronucleus. (credit "micrograph": modification of work by Ian Sutton; scale-bar data from Matt Russell). Q: During sexual reproduction, the macronucleus dissolves and is replaced by what? Choices: - fluctuations - chromosomes - sporozoans - micronucleus A:

Ans:micronucleus
Answer the following question given this paragraph: All cells have certain parts in common. These parts include the cell membrane, cytoplasm, DNA, and ribosomes. Q: All cells have certain parts in common. these parts include the cell membrane, cytoplasm, dna, and what? Choices: - lipids - chromosomes - crystals - ribosomes A:
ribosomes