Answer the following question given this paragraph: Nervous tissue is made up of neurons , or nerve cells, that carry electrical messages. Nervous tissue makes up the brain and the nerves that connect the brain to all parts of the body. Q: What is the nervous tissue in the brain and in the rest of the nervous system made up of? Choices: - electrons - plastic - ions - neurons A:
neurons
Answer the following question given this paragraph: Radio waves are electromagnetic waves with the longest wavelengths, lowest frequencies, and least amount of energy. They are used for radio and television broadcasts and many other purposes. Q: What waves do radio and television use? Choices: - sound waves - light waves - gamma waves - radio waves A:
radio waves
Q: Answer the following question given this paragraph: Viroids Viroids are plant pathogens: small, single-stranded, circular RNA particles that are much simpler than a virus. They do not have a capsid or outer envelope, but like viruses can reproduce only within a host cell. Viroids do not, however, manufacture any proteins, and they only produce a single, specific RNA molecule. Human diseases caused by viroids have yet to be identified. Viroids are known to infect plants (Figure 21.18) and are responsible for crop failures and the loss of millions of dollars in agricultural revenue each year. Some of the plants they infect include potatoes, cucumbers, tomatoes, chrysanthemums, avocados, and coconut palms. Q: Viroids are plant pathogens much simpler than what, but like them can reproduce only within a host cell? Choices: - pests - bacteria - parasites - viruses A:
A: viruses
Question: Answer the following question given this paragraph: Q: The number of possible isomers increases tremendously as carbon skeletons increase in what? Choices: - variation - mass - weight - size A:
Answer: size
*Question*
Answer the following question given this paragraph: Reproduction of Green Algae Green algae reproduce both asexually, by fragmentation or dispersal of spores, or sexually, by producing gametes that fuse during fertilization. In a single-celled organism such as Chlamydomonas, there is no mitosis after fertilization. In the multicellular Ulva, a sporophyte grows by mitosis after fertilization. Both Chlamydomonas and Ulva produce flagellated gametes. Q: In a single-celled organism such as chlamydomonas, there is no what after fertilization? Choices: - germination - spawning - meiosis - mitosis A:
**Answer**
mitosis
Q: Answer the following question given this paragraph: Skin is made up of two layers, the epidermis on top and the dermis below. The tissue below the dermis is called the hypodermis, but it is not part of the skin. Q: What two layers is the skin made of? Choices: - respiration and dermis - layers and dermis - Blood and dermis - epidermis and dermis A:
A: epidermis and dermis