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Biology
What is an air column?
Which of the following best describes how a cell's DNA can change through mutations? Segments of DNA from degraded prokaryotic cells are taken up and incorporated into the DNA of living cells. A virus transfers a DNA segment from one bacterial cell and inserts it into another. A bridge-like connection forms between two prokaryotic cells, allowing genetic information to be transferred. Changes in a cell's DNA sequence occur during replication and are passed on to daughter cells.
Which kind of molecule passes through the lipid bilayer of the cell membrane?
General Biology Laboratory 101: What is the reasons for why the volume of the cell in hypertonic solution has reduced, and why it increased in the hypotonic solution?
When is a hurricane considered to have made landfall? A. When the eye reaches the land mass B. When at least one inch of rain falls C. When the outer wind bands reach land D. When it moves inland from the coast
How is Earth similar to a magnet?
Which best describes the movement through the nephron
Lysosomes can be compared to the recycling and garbage centers of a city. How can this comparison be justified?
1. Which of the following statements best describe the difference between angiosperms and gymnosperms? A. Angiosperms produce cones to protect their seeds; gymnosperm seeds are surrounded by fruit. B. Gymnosperms include fruit trees and ginkgos; angiosperms include conifers, spruces, and firs C. Gymnosperms are mostly adapted for wind pollination; angiosperms are mostly adapted for animal pollination. D. Angiosperms were the first to colonize land; Gymnosperms developed later than the more primitive angiosperms. 2. The outer covering of some land plants that helps slow water loss is called: A. Chlorophyll B. Chitin C. Cuticle D. Stomata 3. What adaptation of land plants helps it to control gas exchange with the atmosphere? A. Chitin B. Cuticle C. Stomata D. Chlorophyll 4. A plant that remains low to the ground and grows in moist conditions is most likely what type of plant? A. Vascular B. Nonvascular C. Angiosperm D. Gymnosperm 5. Terrestrial plants contain lignin to support the plant and vascular tissue to transport water and nutrients through the plant. What are these adaptations in response to? A. Heat B. Gravity C. Dryness D. Gas exchange
What are five factors that might limit the size of an opossum population?
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