Answer the following question given this paragraph: The chloroplasts contain a green pigment called chlorophyll, which captures the energy of sunlight for photosynthesis. Like plant cells, photosynthetic protists also have chloroplasts. Some bacteria also perform photosynthesis, but they do not have chloroplasts. Their photosynthetic pigments are located in the thylakoid membrane within the cell itself. Q: The chloroplasts contain a green pigment called what? Choices: - chloroplasm - sodium - melanin - chlorophyll A:
chlorophyll
Answer the following question given this paragraph: Plants also detect and respond to the daily cycle of light and darkness. For example, some plants open their leaves during the day to collect sunlight and then close their leaves at night to prevent water loss. Q: Some plants open their leaves during the day to collect what? Choices: - moisture - precipitation - energy - sunlight A:
sunlight
Q: Answer the following question given this paragraph: Longitudinal waves cause the particles of medium to move parallel to the direction of the wave. Q: What causes the particles of medium to move parallel to the direction of the wave? Choices: - mechanical waves - fluid waves - Sound waves. - longitudinal waves A:
A: longitudinal waves
Question: Answer the following question given this paragraph: Traditionally, mammals were divided into groups based on their characteristics. Scientists took into consideration their anatomy (body structure), their habitats, and their feeding habits. Mammals are divided into three subclasses and about 26 orders. Some of the groups of mammals include:. Q: Traditionally, mammals were divided into groups based on what? Choices: - their sizes - their colors - their behaviors - their characteristics A:
Answer: their characteristics
*Question*
Answer the following question given this paragraph: Spermatogonia lining the seminiferous tubule undergo mitosis to form primary spermatocytes , which are also diploid. The primary spermatocytes undergo the first meiotic division to form secondary spermatocytes , which are haploid. Spermatocytes make up the next layer of cells inside the seminiferous tubule. Finally, the secondary spermatocytes complete meiosis to form spermatids . Spermatids make up a third layer of cells in the tubule. Q: What do secondary spermatocytes form when completing meiosis? Choices: - pores - semen - sporozoans - spermatids A:
**Answer**
spermatids
(Q).
Answer the following question given this paragraph: Hormones control many cell activities, so they are very important for homeostasis. But what controls the hormones themselves? Most hormones are regulated by feedback mechanisms. A feedback mechanism is a loop in which a product feeds back to control its own production. Most hormone feedback mechanisms involve negative feedback loops. Negative feedback keeps the concentration of a hormone within a narrow range. Q: What is the term for a loop in which a product feeds back to control its own production? Choices: - Recondition Mechanism - load mechanism - Adaptive Mechanism - feedback mechanism A:
(A).
feedback mechanism