Answer the following question given this paragraph: Solar energy travels in photons. Photons travel in waves, which make up electromagnetic radiation. Q: Solar energy travels in what? Choices: - ions - electrons - neurons - photons A:
photons
Answer the following question given this paragraph: Secretory Vesicles contain materials that are to be excreted from the cell, such as wastes or hormones . Secretory vesicles include synaptic vesicles and vesicles in endocrine tissues. Synaptic vesicles store neurotransmitters. They are located at presynaptic terminals in neurons. When a signal reaches the end of an axon, the synaptic vesicles fuse with the cell membrane and release the neurotransmitter. The neurotransmitter crosses the synaptic junction, and binds to a receptor on the next cell. Some cells also produce molecules, such as hormones produced by endocrine tissues, needed by other cells. These molecules are stored in secretory vesicles and released when needed. Secretory vesicles also hold enzymes needed to make extracellular structures, such as the extracellular matrix of animal cells. Q: What vesicles store neurotransmitters? Choices: - hydrophobic - dendritic - Golgi apparatus - synaptic A:
synaptic
Q: Answer the following question given this paragraph: The active transport of ions across the cell membrane causes an electrical gradient to build up across this membrane. The number of positively charged ions outside the cell is usually greater than the number of positively charged ions in the cytosol. This results in a relatively negative charge on the inside of the membrane, and a positive charge on the outside. This difference in charges causes a voltage to exist across the membrane. Voltage is electrical potential energy that is caused by a separation of opposite charges, in this case across the membrane. The voltage across a membrane is the membrane potential . Membrane potential is very important for the conduction of electrical impulses along nerve cells. The membrane potential of a cell at rest is known as its resting potential , and is discussed below. A non-excited nerve cell is an example of a cell at rest. Q: What causes a voltage to exist across the membrane in cells? Choices: - insulators - increase in energy - same charge - difference in charges A:
A: difference in charges
Question: Answer the following question given this paragraph: Q: What are all tissues external to the vascular cambium called? Choices: - nucleus - membranes - larvae - bark A:
Answer: bark
*Question*
Answer the following question given this paragraph: Childhood cancer is rare. The main type of cancer in children is leukemia. It makes up about one third of all childhood cancers. It occurs when the body makes abnormal white blood cells. Q: What is the most common type of cancer developed in children? Choices: - anemia - lung cancer - stomach cancer - leukemia A:
**Answer**
leukemia
Q: Answer the following question given this paragraph: Q: What organism is an important pioneer on cleared rock and soil surfaces, such as volcanic flows and burned forests? Choices: - cysts - algae - pigment - lichen A:
A: lichen