input: OPTIONS:
- substrates
- phospholipids
- hydrogen
- peptidoglycan Now, answer this question: Answer the following question given this paragraph: Unlike Archaea and eukaryotes, bacteria have a cell wall made of peptidoglycan, comprised of sugars and amino acids, and many have a polysaccharide capsule (Figure 3.5). The cell wall acts as an extra layer of protection, helps the cell maintain its shape, and prevents dehydration. The capsule enables the cell to attach to surfaces in its environment. Some prokaryotes have flagella, pili, or fimbriae. Flagella are used for locomotion, while most pili are used to exchange genetic material during a type of reproduction called conjugation. Q: Unlike archaea and eukaryotes, bacteria have a cell wall made of what? A:
A:
output: peptidoglycan

Answer the following question given this paragraph: 46.4 The interplay of tropic and sex hormones regulates mammalian reproduction. Q: What two types of hormones regulate mammalian reproduction? A:

OPTIONS:
- tropic and subtropic
- pheromones and enzymes
- endorphins and adrenaline
- tropic and sex

Answer: tropic and sex

Problem: OPTIONS:
- telomeres
- sporangia
- nucleus
- flagella
Q: Answer the following question given this paragraph: Q: What structures on the gastrodermal cells keep the contents of the gastrovascular cavity agitated and help distribute nutrients? A:
Answer: flagella

Problem:OPTIONS:
- motion
- sunlight
- erosion
- precipitation

Answer the following question given this paragraph: Selective precipitation can also be used in qualitative analysis. In this method, reagents are added to an unknown chemical mixture in order to induce precipitation. Certain reagents cause specific ions to precipitate out; therefore, the addition of the reagent can be used to determine whether the ion is present in the solution. Q: In qualitative analysis, reagents are added to an unknown chemical mixture in order to induce what? A:
****
A: precipitation

Answer the following question given this paragraph: Q: What do dendrites receive signals from? A:
OPTIONS:
- hormones
- fibers
- electrons
- neurons
neurons

Answer the following question given this paragraph: "Dry ice," or solid carbon dioxide, is a substance that sublimes at atmospheric pressures. Dry ice is very cold (78C) and so is used as a coolant for goods such as ice cream that must remain frozen during shipment. Because the dry ice sublimes rather than melting, there is no liquid mess associated with its change of state as the dry ice warms. As you may have seen in demonstrations, dry ice merely transforms from a solid to a cold, steamy looking gas. Ferrocene (an iron-containing compound) is usually purified by sublimation by gentle warming at atmospheric pressure. In the Figure below , you can see the reddish ferrocene crystals deposited on the outside of that tube. Deposition is the change of state from a gas to a solid. Q: What is the common term for solid carbon dioxide, which is used as a coolant? A:
OPTIONS:
- blue ice
- antifreeze
- liquid nitrogen
- dry ice

Answer:
dry ice