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:
two atp molecules
Answer the following question given this paragraph: Q: What type of cells are arranged into tightly packed sheaths around the veins of the leaf? Choices: - pattern - sheath cells - cellulose - cell walls - bundle-sheath cells A:
bundle-sheath cells
Q: Answer the following question given this paragraph: The Calvin cycle occurs in the second stage of photosynthesis. This stage takes place in the stroma of the chloroplast. In the Calvin cycle, carbon dioxide is used to produce glucose (sugar) using the energy stored in ATP and NADPH. The energy is released from these molecules when ATP loses phosphate (P i ) to become ADP and NADPH loses hydrogen (H) to become NADP + . Q: In what stage of photosynthesis does the calvin cycle occur? Choices: - third - fourth - first - second A:
A: second
Question: Answer the following question given this paragraph: The fishing float in Figure below bobs on the surface of the water. The fish in the figure is suspended in the water near the surface. Why do the float and fish stay on or near the surface? Why don't they sink? The answer is buoyancy, another property of fluids. Q: What property of fluids causes something to stay on or near the surface of water? Choices: - density - strength - weight - buoyancy A:
Answer: buoyancy
*Question*
Answer the following question given this paragraph: Q: What element has the atomic number 16? Choices: - oxygen - helium - neon - sulfur A:
**Answer**
sulfur
*Question*
Answer the following question given this paragraph: ability to diversify at each step. The totipotent stem cell is the zygote, or fertilized egg. The totipotent (toti- = "all") stem cell gives rise to all cells of the human body. The next level is the pluripotent stem cell, which gives rise to multiple types of cells of the body and some of the supporting fetal membranes. Beneath this level, the mesenchymal cell is a stem cell that develops only into types of connective tissue, including fibrous connective tissue, bone, cartilage, and blood, but not epithelium, muscle, and nervous tissue. One step lower on the hierarchy of stem cells is the hemopoietic stem cell, or hemocytoblast. All of the formed elements of blood originate from this specific type of cell. Hemopoiesis begins when the hemopoietic stem cell is exposed to appropriate chemical stimuli collectively called hemopoietic growth factors, which prompt it to divide and differentiate. One daughter cell remains a hemopoietic stem cell, allowing hemopoiesis to continue. The other daughter cell becomes either of two types of more specialized stem cells (Figure 18.4): Lymphoid stem cells give rise to a class of leukocytes known as lymphocytes, which include the various T cells, B cells, and natural killer (NK) cells, all of which function in immunity. However, hemopoiesis of lymphocytes progresses somewhat differently from the process for the other formed elements. In brief, lymphoid stem cells quickly migrate from the bone marrow to lymphatic tissues, including the lymph nodes, spleen, and thymus, where their production and differentiation continues. B cells are so named since they mature in the bone marrow, while T cells mature in the thymus. Myeloid stem cells give rise to all the other formed elements, including the erythrocytes; megakaryocytes that produce platelets; and a myeloblast lineage that gives rise to monocytes and three forms of granular leukocytes: neutrophils, eosinophils, and basophils. Q: Which cell gives rise to all cells of the human body? Choices: - signaler stem cell - omnipoten stem cell - schwann stem cell - totipotent stem cell A:
**Answer**
totipotent stem cell