Answer the following question given this paragraph: Habitats Nearly all protists exist in some type of aquatic environment, including freshwater and marine environments, damp soil, and even snow. Several protist species are parasites that infect animals or plants. A few protist species live on dead organisms or their wastes, and contribute to their decay. Q: Nearly all protists exist in some type of aquatic environment, including freshwater and marine environments, damp soil, and even snow. several protist species are parasites that infect animals or plants. a few protist species live on dead organisms or their wastes, and contribute to what? Choices: - greenhouse gas - habitat loss - spontaneous mutation - their decay A:
their decay
(Question)
Answer the following question given this paragraph: Neurons are usually classified based on the role they play in the body. Two main types of neurons are sensory neurons and motor neurons. Q: What do you call the zone in a body of water where there is too little sunlight for photosynthesis? Choices: - semimetal zone - Dark Zone - observable zone - aphotic zone A:
(Answer)
aphotic zone
Ques: Answer the following question given this paragraph: A neutron is one of three main particles that make up the atom. It is found in the nucleus and is neutral in electric charge. It has about the same mass and diameter as a proton. Neutrons are found in all atoms except for most atoms of hydrogen. Q: Where in the atom is a neutron found? Choices: - electron - proton - orbit - the nucleus A:
Ans: the nucleus
(Q).
Answer the following question given this paragraph: Meiosis I begins after DNA replicates during interphase of the cell cycle. In both meiosis I and meiosis II , cells go through the same four phases as mitosis - prophase, metaphase, anaphase and telophase. However, there are important differences between meiosis I and mitosis. The eight stages of meiosis are summarized below. The stages will be described for a human cell, starting with 46 chromosomes. Q: What must replicate in the cell cycle before meiosis i takes place? Choices: - cell walls - sperm - meiotic fluid - dna A:
(A).
dna
Ques:Answer the following question given this paragraph: No doubt you've had a sore throat before, and you've probably eaten cheese or yogurt. If so, then you've encountered the fascinating world of prokaryotes. Prokaryotes are single-celled organisms that lack a nucleus. They also lack other membrane-bound organelles. Prokaryotes are tiny and sometimes bothersome, but they are the most numerous organisms on Earth. Without them, the world would be a very different place. Prokaryotes are the simplest organisms. The first cells and organisms to evolve would be classified as prokaryotic. Q: What group of single-celled organisms lacking a nucleus comprises the most numerous organisms on earth? Choices: - eukaryotes - carbohydrates - fungi - prokaryotes A:

Ans:prokaryotes
Ques:Answer the following question given this paragraph: Glycolysis You have read that nearly all of the energy used by living things comes to them in the bonds of the sugar, glucose. Glycolysis is the first step in the breakdown of glucose to extract energy for cell metabolism. Many living organisms carry out glycolysis as part of their metabolism. Glycolysis takes place in the cytoplasm of most prokaryotic and all eukaryotic cells. Glycolysis begins with the six-carbon, ring-shaped structure of a single glucose molecule and ends with two molecules of a three-carbon sugar called pyruvate. Glycolysis consists of two distinct phases. In the first part of the glycolysis pathway, energy is used to make adjustments so that the six-carbon sugar molecule can be split evenly into two three-carbon pyruvate molecules. In the second part of glycolysis, ATP and nicotinamide-adenine dinucleotide (NADH) are produced (Figure 4.13). If the cell cannot catabolize the pyruvate molecules further, it will harvest only two ATP molecules from one molecule of glucose. For example, mature mammalian red blood cells are only capable of glycolysis, which is their sole source of ATP. If glycolysis is interrupted, these cells would eventually die. Q: Which process breaks down glucose to extract energy for cell metabolism? Choices: - photosynthesis - meiosis - mitosis - glycolysis A:

Ans:
glycolysis