Answer the following question given this paragraph: Look at the battery and light bulb in Figure below . The light bulb works and it's connected to the battery, but it won't light. The problem is the loose wire on the left. It must be connected to the positive terminal of the battery in order for the bulb to light up. The reason? Electric current can flow through a material such as a wire only if the material forms a closed loop. Charges must have an unbroken path to follow between the positively and negatively charged parts of the voltage source, in this case, the battery. Q: Because charges must have an unbroken path to follow, electric current cannot flow through a material unless it forms what? Choices: - complete loop - closed area - total loop - closed loop A:
closed loop
Answer the following question given this paragraph: The basic crocodilian body plan ( Figure below ) is a very successful one and has changed little over time. Modern species actually look very similar to their Cretaceous ancestors of 84 million years ago. All species of crocodilians have similar body structures, including an elongated snout, powerful jaws, muscular tail, large protective scales, streamlined body, and eyes and nostrils that are positioned on top of the head. Q: All species of crocodilians have similar body structures, including an elongated snout, powerful jaws, muscular tail, large protective scales, streamlined body, and eyes and nostrils that are positioned on what? Choices: - below the neck - back of head - side of head - top of head A:
top of head
Q: Answer the following question given this paragraph: The effects of extracellular signals can also be amplified by enzymatic cascades. At the initiation of the signal, a single ligand binds to a single receptor. However, activation of a receptor-linked enzyme can activate many copies of a component of the signaling cascade, which amplifies the signal. Q: What helps amplify the effects of extracellular signals? Choices: - electrical cascades - spontaneous cascades - mutation cascades - enzymatic cascades A:
A: enzymatic cascades
Question: Answer the following question given this paragraph: The organs of the digestive system are lined with muscles. The muscles contract, or tighten, to push food through the system ( Figure below ). The muscles contract in waves. The waves pass through the digestive system like waves through a slinky. This movement of muscle contractions is called peristalsis . Without peristalsis, food would not be able to move through the digestive system. Peristalsis is an involuntary process, which means that it occurs without your conscious control. Q: What is the movement of muscle in the digestive system called? Choices: - acid reflux - labor contractions - apoptosis - peristalsis A:
Answer: peristalsis
*Question*
Answer the following question given this paragraph: Asexual reproduction is simpler than sexual reproduction. It involves just one parent. The offspring are genetically identical to each other and to the parent. All prokaryotes and some eukaryotes reproduce this way. There are several different methods of asexual reproduction. They include binary fission, fragmentation, and budding. Q: What kind of reproduction involves just one parent and produces offspring genetically identical to each other and to the parent? Choices: - sexual reproduction - organic reproduction - microscopic reproduction - asexual reproduction A:
**Answer**
asexual reproduction
Q: Answer the following question given this paragraph: Eggs form in the ovaries. After puberty, an egg is released from an ovary each month in the process of ovulation. The egg passes through the fallopian tube where fertilization may take place. Q: What part of the body are eggs formed in? Choices: - brain - intestine - pancreas - ovaries A:
A: ovaries