Answer the following question given this paragraph: The saguaro cactus pictured in Figure below has adapted in all three ways. When it was still a very small plant, just a few inches high, its shallow roots already reached out as much as 2 meters (7 feet) from the base of the stem. By now, its root system is much more widespread. It allows the cactus to gather as much moisture as possible from rare rainfalls. The saguaro doesn't have any leaves to lose water by transpiration. It also has a large, barrel-shaped stem that can store a lot of water. Thorns protect the stem from thirsty animals that might try to get at the water inside. Q: In desert cactus, thorns that protect the water held in a large, barrel-shaped stem are an example of what? Choices: - feature - characteristic - species - adaptation A:
adaptation
(Question)
Answer the following question given this paragraph: All of the land drained by a river system is called its basin, or watershed. One river system's basin is separated from another river system's basin by a divide. The divide is created by the highest points between the two river basins. Precipitation that falls within a river basin always flows toward that river. Precipitation that falls on the other side of the divide flows toward a different river. Q: All of the land drained by a river system is called its basin, or what "wet" term? Choices: - river bank - groundwater - wetlands - watershed A:
(Answer)
watershed
Ques: Answer the following question given this paragraph: A: Thermal energy is transferred by conduction from the hot iron to the shirt, from the hot cup to the hand holding it, from the flame of the camp stove to the bottom of the pot as well as from the bottom of the pot to the food inside, and from the feet to the snow. The shirt, hand, pot, food, and snow become warmer because of the transferred energy. Because the feet lose thermal energy, they feel colder. Q: How is thermal energy transferred in every-day, real life situations, such as holding a warm cup? Choices: - decomposition - condensation - oxidation - conduction A:
Ans: conduction
(Q).
Answer the following question given this paragraph: In glycolysis, glucose is split into two molecules of pyruvate. This results in a net gain of two ATP molecules. Q: In glycolysis, glucose is split into two molecules of pyruvate. this results in a net gain of? Choices: - four atp molecules - six atp molecules - three atp molecules - two atp molecules A:
(A).
two atp molecules
Ques:Answer the following question given this paragraph: Figure 8.6 Photosynthesis takes place in chloroplasts, which have an outer membrane and an inner membrane. Stacks of thylakoids called grana form a third membrane layer. Q: Where does photosynthesis occur in plants? Choices: - golgi bodies - cell membrane - nucleus - in chloroplasts A:

Ans:in chloroplasts
Answer the following question given this paragraph: Located at intervals along the synaptonemal complex are large protein assemblies called recombination nodules. These assemblies mark the points of later chiasmata and mediate the multistep process of crossoveror genetic recombinationbetween the non-sister chromatids. Near the recombination nodule on each chromatid, the double-stranded DNA is cleaved, the cut ends are modified, and a new connection is made between the non-sister chromatids. As prophase I progresses, the synaptonemal complex begins to break down and the chromosomes begin to condense. When the synaptonemal complex is gone, the homologous chromosomes remain attached to each other at the centromere and at chiasmata. The chiasmata remain until anaphase I. The number of chiasmata varies according to the species and the length of the chromosome. There must be at least one chiasma per chromosome for proper separation of homologous chromosomes during meiosis I, but there may be as many as 25. Following crossover, the synaptonemal complex breaks down and the cohesin connection between homologous pairs is also removed. At the end of prophase I, the pairs are held together only at the chiasmata (Figure 11.3) and are called tetrads because the four sister chromatids of each pair of homologous chromosomes are now visible. The crossover events are the first source of genetic variation in the nuclei produced by meiosis. A single crossover event between homologous non-sister chromatids leads to a reciprocal exchange of equivalent DNA between a maternal chromosome and a paternal chromosome. Now, when that sister chromatid is moved into a gamete cell it will carry some DNA from one parent of the individual and some DNA from the other parent. The sister recombinant chromatid has a combination of maternal and paternal genes that did not exist before the crossover. Multiple crossovers in an arm of the chromosome have the same effect, exchanging segments of DNA to create recombinant chromosomes. Q: Dna segments cross over to form what kind of chromosome? Choices: - mutated - resistant - autosome - recombinant A:
recombinant