Answer the following question given this paragraph: 30.4 | Leaves By the end of this section, you will be able to: Identify the parts of a typical leaf Describe the internal structure and function of a leaf Compare and contrast simple leaves and compound leaves List and describe examples of modified leaves Leaves are the main sites for photosynthesis: the process by which plants synthesize food. Most leaves are usually green, due to the presence of chlorophyll in the leaf cells. However, some leaves may have different colors, caused by other plant pigments that mask the green chlorophyll. The thickness, shape, and size of leaves are adapted to the environment. Each variation helps a plant species maximize its chances of survival in a particular habitat. Usually, the leaves of plants growing in tropical rainforests have larger surface areas than those of plants growing in deserts or very cold conditions, which are likely to have a smaller surface area to minimize water loss. Q: The presence of what in leaf cells makes most leaves appear green? Choices: - hydrogen - sodium - carbonate - chlorophyll A:
chlorophyll
Answer the following question given this paragraph: The basic building blocks of the human body are cells. Human cells are organized into tissues, tissues are organized into organs, and organs are organized into organ systems. Q: What are the basic building blocks of the human body? Choices: - proteins - minerals - vitamins - cells A:
cells
Q: Answer the following question given this paragraph: When a blood vessel constricts, less blood can flow through it. Q: Does blood flow increase or decrease when blood vessels constrict? Choices: - it's not affected - increases - it stops - decrease A:
A: decrease
Question: Answer the following question given this paragraph: Strontium is a silver-colored alkaline Earth metal that is even softer than calcium. Strontium compounds are quite common and have a variety of usesfrom fireworks to cement to toothpaste. In fireworks, strontium compounds produce deep red explosions. In toothpaste, like the one pictured in the Figure below , the compound strontium chloride reduces tooth sensitivity. Q: What is a silver-colored alkaline earth metal that is even softer than calcium? Choices: - mercury - magnesium - lithium - strontium A:
Answer: strontium
*Question*
Answer the following question given this paragraph: Q: What do you call the fragments of cells involved in the clotting process that are suspended in blood plasma? Choices: - hematocrit - ironites - hemoglobin - platelets A:
**Answer**
platelets
Q: Answer the following question given this paragraph: Q: Receptor clustering happens when what binds to the receptors? Choices: - enzymes - lipid molecules - carbohydrates - fas molecules A:
A: fas molecules