Q: Q: Which kinds of cells have nuclei and other membrane bound organelles? Read this paragraph and choose the correct option from the provided answers: Like the cells of all eukaryotes, animal cells have a nucleus and other membrane-bound organelles. Unlike the cells of eukaryotes in the Plant and Fungus Kingdoms, animal cells lack a cell wall. This gives animal cells flexibility. It lets them take on different shapes. This in turn allows them to become specialized for particular jobs. Choices: - lipids - monocytes - prokaryotes - eukaryotes A:
A: eukaryotes

Q: Q: What helps form the walls of internal organs such as the heart and stomach? Read this paragraph and choose the correct option from the provided answers: Choices: - blood - tissues - valves - muscles A:
A: muscles

Q: Q: Many of the protist species classified into the supergroup excavata are asymmetrical, single-celled organisms with a feeding groove "excavated" from one side. this supergroup includes heterotrophic predators, photosynthetic species, and these? Read this paragraph and choose the correct option from the provided answers: Excavata Many of the protist species classified into the supergroup Excavata are asymmetrical, single-celled organisms with a feeding groove "excavated" from one side. This supergroup includes heterotrophic predators, photosynthetic species, and parasites. Its subgroups are the diplomonads, parabasalids, and euglenozoans. Diplomonads Among the Excavata are the diplomonads, which include the intestinal parasite, Giardia lamblia (Figure 23.10). Until recently, these protists were believed to lack mitochondria. Mitochondrial remnant organelles, called mitosomes, have since been identified in diplomonads, but these mitosomes are essentially nonfunctional. Diplomonads exist in anaerobic environments and use alternative pathways, such as glycolysis, to generate energy. Each diplomonad cell has two identical nuclei and uses several flagella for locomotion. Choices: - insects - reptiles - mammals - parasites A:
A: parasites

Q: Q: Fatty acids, triglycerides, phospholipids, and steroids are examples of what? Read this paragraph and choose the correct option from the provided answers: Lipids are a diverse class of relatively nonpolar biomolecules that generally do not dissolve well in water. Common types of lipids include fatty acids, triglycerides, phospholipids, and steroids. Choices: - tissues - enzymes - proteins - lipids A:
A: lipids