Answer the following question given this paragraph: The next most abundant element in plant cells is nitrogen (N); it is part of proteins and nucleic acids. Nitrogen is also used in the synthesis of some vitamins. Hydrogen and oxygen are macronutrients that are part of many organic compounds, and also form water. Oxygen is necessary for cellular respiration; plants use oxygen to store energy in the form of ATP. Phosphorus (P), another macromolecule, is necessary to synthesize nucleic acids and phospholipids. As part of ATP, phosphorus enables food energy to be converted into chemical energy through oxidative phosphorylation. Likewise, light energy is converted into chemical energy during photophosphorylation in photosynthesis, and into chemical energy to be extracted during respiration. Sulfur is part of certain amino acids, such as cysteine and methionine, and is present in several coenzymes. Sulfur also plays a role in photosynthesis as part of the electron transport chain, where hydrogen gradients play a key role in the conversion of light energy into ATP. Potassium (K) is important because of its role in regulating stomatal opening and closing. As the openings for gas exchange, stomata help maintain a healthy water balance; a potassium ion pump supports this process. Q: What element do plants use to store energy as atp? Choices: - nitrogen - chlorophyll - carbon - oxygen A:
oxygen
Answer the following question given this paragraph: Explore the sea star's body plan (http://openstaxcollege. org/l/sea_star) up close, watch one move across the sea floor, and see it devour a mussel. Brittle stars belong to the class Ophiuroidea. Unlike sea stars, which have plump arms, brittle stars have long, thin arms that are sharply demarcated from the central disk. Brittle stars move by lashing out their arms or wrapping them around objects and pulling themselves forward. Sea urchins and sand dollars are examples of Echinoidea. These echinoderms do not have arms, but are hemispherical or flattened with five rows of tube feet that help them in slow movement; tube feet are extruded through pores of a continuous internal shell called a test. Sea lilies and feather stars are examples of Crinoidea. Both of these species are suspension feeders. Sea cucumbers of class Holothuroidea are extended in the oral-aboral axis and have five rows of tube feet. These are the only echinoderms that demonstrate "functional" bilateral symmetry as adults, because the uniquely extended oral-aboral axis compels the animal to lie horizontally rather than stand vertically. Q: What type of feeders are sea lilies and feather stars? Choices: - deposit feeder - bottom feeder - silt feeders - suspension feeders A:
suspension feeders
Q: Answer the following question given this paragraph: Hair, hair follicle, and oil glands. The oil, called sebum, helps to prevent water loss from the skin. The sebaceous gland secretes sebum, which waterproofs the skin and hair. Q: What does the sebaceous gland secrete which waterproofs the skin and hair? Choices: - pus - progesterone - collagen - sebum A:
A: sebum
Question: Answer the following question given this paragraph: Q: What do roots bring in from the soil into the plant? Choices: - pesticides and chlorophyll - hormones and fertilizer - dirt and minerals - water and nutrients A:
Answer: water and nutrients
*Question*
Answer the following question given this paragraph: illness that occurs when harmful bacteria enter the digestive system in food; commonly called food poisoning. Q: What do you call the illness that occurs when harmful bacteria enter the digestive system in food? Choices: - bacteria poisoning - nutrition poisoning - meat poisoning - food poisoning A:
**Answer**
food poisoning
Q: Answer the following question given this paragraph: Mammals breathe with the help of a diaphragm. This is the large muscle that extends across the bottom of the chest below the lungs. When the diaphragm contracts, it increases the volume of the chest. This decreases pressure on the lungs and allows air to flow in. When the diaphragm relaxes, it decreases the volume of the chest. This increases pressure on the lungs and forces air out. Q: What muscle in the chest helps inflate and deflate the lungs? Choices: - pectoral - cartilage - heart - diaphragm A:
A: diaphragm