Q: Thylakoids in a chloroplast contain what plant pigment? Read this paragraph and choose the correct option from the provided answers: The structure of a chloroplast is shown in Figure below . The chloroplast is surrounded by two membranes. Inside the chloroplast are stacks of flattened sacs of membrane, called thylakoids . The thylakoids contain chlorophyll. Surrounding the thylakoids is a space called the stroma . The stroma is filled with watery ("aqueous") fluid. Choices: - melanin - dye - ultramarine - chlorophyll A:
chlorophyll

Q: Dna encodes instructions for what kind of molecules? Read this paragraph and choose the correct option from the provided answers: DNA encodes instructions for proteins. RNA copies the genetic code in DNA and carries it to a ribosome. There, amino acids are joined together in the correct sequence to make a protein. Choices: - acids - cells - fats - proteins A:
proteins

Q: What term describes the amount of solute in a given amount of solution? Read this paragraph and choose the correct option from the provided answers: The concentration of a solution is the amount of solute in a given amount of solution. A dilute solution has a low concentration of solute. A concentrated solution has a high concentration of solute. Choices: - density - temperature - cloudiness - concentration A:
concentration

Q: A geiger counter is used for detecting what? Read this paragraph and choose the correct option from the provided answers: One of the simplest ways of detecting radioactivity is by using a piece of photographic film embedded in a badge or a pen. On a regular basis, the film is developed and checked for exposure. Comparing the exposure level of the film with a set of standard exposures indicates the amount of radiation a person was exposed to. Another means of detecting radioactivity is an electrical device called a Geiger counter (Figure 15.2 "Detecting Radioactivity"). It contains a gas-filled chamber with a thin membrane on one end that allows radiation emitted from radioactive nuclei to enter the chamber and knock electrons off atoms of gas (usually argon). The presence of electrons and positively charged ions causes a small current, which is detected by the Geiger counter and converted to a signal on a meter or, commonly, an audio circuit to produce an audible "click. Choices: - mutation - pressure - convection - radiation A:
radiation