Answer the following question given this paragraph: 25.5 Dispersion: The Rainbow and Prisms The spreading of white light into its full spectrum of wavelengths is called dispersion. Rainbows are produced by a combination of refraction and reflection and involve the dispersion of sunlight into a continuous distribution of colors. Dispersion produces beautiful rainbows but also causes problems in certain optical systems. Q: What is the spreading of white light into its full spectrum of wavelengths called? Choices: - condensation - saturation - radiate - dispersion A:
dispersion
(Question)
Answer the following question given this paragraph: The cell starting meiosis is called a primary oocyte, as shown in Figure 43.13. This cell will start the first meiotic division and be arrested in its progress in the first prophase stage. At the time of birth, all future eggs are in the prophase stage. At adolescence, anterior pituitary hormones cause the development of a number of follicles in an ovary. This results in the primary oocyte finishing the first meiotic division. The cell divides unequally, with most of the cellular material and organelles going to one cell, called a secondary oocyte, and only one set of chromosomes and a small amount of cytoplasm. Q: The cell starting meiosis is called a what? Choices: - secondary oocyte - primary gamete - zygote - primary oocyte A:
(Answer)
primary oocyte
Ques: Answer the following question given this paragraph: Figure below shows a simple diagram of the expanding universe. Imagine a balloon covered with tiny dots. When you blow up the balloon, the rubber stretches. The dots slowly move away from each other as the space between them increases. In an expanding universe, the space between galaxies is expanding. We see this as the other galaxies moving away from us. We also see that galaxies farther away from us move away faster than nearby galaxies. Q: How does the distance between galaxies change as the universe expands? Choices: - it decreases - it is unchanged - it becomes irrelevant - it increases A:
Ans: it increases
(Q).
Answer the following question given this paragraph: Ancestors of mammals evolved close to 300 million years ago. They were amniotes called synapsids. Figure below shows how modern mammals evolved from synapsids. The stages of evolution from synapsids to mammals are described below. Q: How long ago did the ancestors of mammals evolve? Choices: - 10 million - 50,900 million years - 100 million - 300 million years A:
(A).
300 million years
Ques:Answer the following question given this paragraph: the partially decayed remains of plants and animals that forms the organic portion of soil. Q: Partially decayed remains of plants and animals form the organic portion of what? Choices: - minerals - nutrients - grasses - soil A:

Ans:soil
Answer the following question given this paragraph: The trp Operon: A Repressor Operon Bacteria such as E. coli need amino acids to survive. Tryptophan is one such amino acid that E. coli can ingest from the environment. coli can also synthesize tryptophan using enzymes that are encoded by five genes. These five genes are next to each other in what is called the tryptophan (trp) operon (Figure 16.3). If tryptophan is present in the environment, then E. coli does not need to synthesize it and the switch controlling the activation of the genes in the trp operon is switched off. However, when tryptophan availability is low, the switch controlling the operon is turned on, transcription is initiated, the genes are expressed, and tryptophan is synthesized. Q: E. coli need what kind of acids to survive? Choices: - hydrochloric - bacterial - boric - amino A:
amino