Q: Answer the following question given this paragraph: Facilitated Diffusion Across a Cell Membrane. Channel proteins and carrier proteins help substances diffuse across a cell membrane. In this diagram, the channel and carrier proteins are helping substances move into the cell (from the extracellular space to the intracellular space). Q: Channel proteins and carrier proteins help substances diffuse across what? Choices: - endoplasmic reticulum - ribosomes - cytoplasm - cell membrane A:
A: cell membrane

Q: Answer the following question given this paragraph: Pinocytosis or "cellular drinking," occurs when the plasma membrane folds inward to form a channel allowing dissolved substances to enter the cell, as shown in Figure below . When the channel is closed, the liquid is encircled within a pinocytic vesicle. Q: Pinocytosis or "cellular drinking," occurs when the plasma membrane folds inward to form a channel allowing dissolved substances to enter what? Choices: - proteins - nucleus - homeostasis - cell A:
A: cell

Q: Answer the following question given this paragraph: Fossils are a window into the past. They provide clear evidence that evolution has occurred. Scientists who find and study fossils are called paleontologists . How do they use fossils to understand the past? Consider the example of the horse, shown in Figure below . The fossil record shows how the horse evolved. Q: Scientists who find and study fossils are called what? Choices: - biologists - geologists - anthropologist - paleontologists A:
A: paleontologists

Q: Answer the following question given this paragraph: Sequencing the human genome has increased our knowledge of genetic disorders. These are diseases caused by mutations. They may be caused by single gene mutations or the failure of chromosomes to separate correctly during meiosis. Q: What causes genetic disorders? Choices: - parasites - proteins - pollution - mutations A:
A: mutations