Q: What are the most common seedless vascular plants? Read this paragraph and choose the correct option from the provided answers: Ferns are the most common seedless vascular plants ( Figure below ). They usually have large divided leaves called fronds. In most ferns, fronds develop from a curled-up formation called a fiddlehead ( Figure below ). The fiddlehead looks like the curled decoration on the end of a stringed instrument, such as a fiddle. Leaves unroll as the fiddleheads grow and expand. Ferns grow in a variety of habitats, ranging in size from tiny aquatic species to giant tropical plants. Choices: - trees - grasses - weeds - ferns A:
ferns

Q: What is the set of steps that scientists use to learn about the world? Read this paragraph and choose the correct option from the provided answers: Sometime in your life you've asked a question about the world around you. Probably you've asked a lot of questions over the years. The best way to answer questions about the natural world is by using science. Scientists ask questions every day, and then use a set of steps to answer those questions. The steps are known as the scientific method. By following the scientific method, scientists come up with the best information about the natural world. As a scientist, you need to do experiments to find out about the world. You also need to wonder, observe, talk, and think. Everything we learn helps us to ask new and better questions. Choices: - philosophic method - rhythm method - Socratic method - scientific method A:
scientific method

Q: Q: What's another term for egg-laying mammals? Read this paragraph and choose the correct option from the provided answers: There are very few living species of monotremes, or egg-laying mammals. They include the echidna and platypus, both pictured in Figure below . Monotremes are found only in Australia and the nearby island of New Guinea. Choices: - viviparus - amphibians - herbivores - monotremes A:
A: monotremes

Question: Q: Through which organ do hookworm larvae enter the human body? Read this paragraph and choose the correct option from the provided answers: Parasitic roundworms may have plant, vertebrate, or invertebrate hosts. Several species have human hosts. For example, hookworms, like the one in Figure below , are human parasites. They infect the human intestine. They are named for the hooks they use to grab onto the host's tissues. Hookworm larvae enter the host through the skin. They migrate to the intestine, where they mature into adults. Adults lay eggs, which pass out of the host in feces. Then the cycle repeats. Choices: - through the lungs - through the rectum - through the mouth - through the skin A:
Answer: through the skin

*Question*
Q: Insulin is produced by what part of the body? Read this paragraph and choose the correct option from the provided answers: 17.9 The Endocrine Pancreas The pancreas has both exocrine and endocrine functions. The pancreatic islet cell types include alpha cells, which produce glucagon; beta cells, which produce insulin; delta cells, which produce somatostatin; and PP cells, which produce pancreatic polypeptide. Insulin and glucagon are involved in the regulation of glucose metabolism. Insulin is produced by the beta cells in response to high blood glucose levels. It enhances glucose uptake and utilization by target cells, as well as the storage of excess glucose for later use. Dysfunction of the production of insulin or target cell resistance to the effects of insulin causes diabetes mellitus, a disorder characterized by high blood glucose levels. The hormone glucagon is produced and secreted by the alpha cells of the pancreas in response to low blood glucose levels. Glucagon stimulates mechanisms that increase blood glucose levels, such as the catabolism of glycogen into glucose. Choices: - kidneys - liver - thyroid - pancreas A:
**Answer**
pancreas

Q: What do you call large, y-shaped proteins that recognize and bind to antigens? Read this paragraph and choose the correct option from the provided answers: Plasma cells are activated B cells that secrete antibodies. Antibodies are large, Y-shaped proteins that recognize and bind to antigens. Plasma cells are like antibody factories, producing many copies of a single type of antibody. The antibodies travel throughout the body in blood and lymph. Each antibody binds to just one kind of antigen. When it does, it forms an antigen-antibody complex (see Figure below ). The complex flags the antigen-bearing cell for destruction by phagocytosis . Choices: - proteins - membranes - parasites - antibodies A:
antibodies