*Question*
Q: Solar energy travels in what? Read this paragraph and choose the correct option from the provided answers: Solar energy travels in photons. Photons travel in waves, which make up electromagnetic radiation. Choices: - ions - electrons - neurons - photons A:
**Answer**
photons

*Question*
Q: In addition to a vibrating electric field what does an electromagnetic wave consist of? Read this paragraph and choose the correct option from the provided answers: An electromagnetic wave consists of vibrating electric and magnetic fields. Choices: - radiation field - molecular field - gravitational field - magnetic field A:
**Answer**
magnetic field

*Question*
Q: What is the protein that carries iron that binds with oxygen in red blood cells? Read this paragraph and choose the correct option from the provided answers: The trillions of red blood cells in blood plasma carry oxygen. Red blood cells contain hemoglobin , a protein with iron that binds with oxygen. Red blood cells are made in the marrow of long bones, rib bones, the skull, and the vertebrae. These cells survive for about 120 days, and then they are destroyed. Mature red blood cells lack a nucleus and other organelles, allowing for more hemoglobin, and therefore more oxygen to be carried by each cell. Choices: - keratin - potassium - insulin - hemoglobin A:
**Answer**
hemoglobin

*Question*
Q: Prokaryotic cells have what structure outside their plasma membrane? Read this paragraph and choose the correct option from the provided answers: Most prokaryotic cells are much smaller than eukaryotic cells. They have a cell wall outside their plasma membrane. Prokaryotic DNA consists of a single loop. Some prokaryotes also have small, circular pieces of DNA called plasmids. Choices: - plasma wall - cell membrane - sodium channel - cell wall A:
**Answer**
cell wall