Question: Q: The secondary wall contains _________ , a secondary cell component in plant cells that have completed cell growth/expansion. Read this paragraph and choose the correct option from the provided answers: Microtubules guide the formation of the plant cell wall. Cellulose is laid down by enzymes to form the primary cell wall. Some plants also have a secondary cell wall. The secondary wall contains a lignin, a secondary cell component in plant cells that have completed cell growth/expansion. Choices: - cytoplasm - glucogen - cellulose - lignin A:
Answer: lignin

Question: Q: What links the trophic levels from producers to top carnivores? Read this paragraph and choose the correct option from the provided answers: Choices: - ecosystems - environments - fuel chains - food chains A:
Answer: food chains

Question: Q: What do light emitters do to what you see? Read this paragraph and choose the correct option from the provided answers: Discussions of colors can sometimes become confusing because of the difference between light emitters and light absorbers. Light absorbers, such as dyes and pigments, absorb frequencies from those that you see, while light emitters add frequencies to what you see. If I were to shine red light, green light, and blue light into your eye all at the same time, you would likely see some variation of white. If I were to mix red paint, green paint, and blue paint together, you would likely see black or some very dark color. Choices: - divide frequencies - subtract frequencies - block frequencies - add frequencies A:
Answer:
add frequencies