Question

directions: read the science news section on pages 2 - 7. then test your knowledge, filling in the letters next to the correct answers. 1. why have northern giant hornets earned the nickname murder hornets? a they sting can kill a human in only a few minutes. b they prey on other northern giant hornets. c they can destroy a hive of honeybees in just a few hours. d they are the largest wasp in the world. 2. which of the following insects is longer than 0.3 inches but shorter than 1.0 inches? a northern giant hornet b paper wasp c bumblebee d all of the above 3. scientists recently discovered an enzyme in three plants that helps create an awful stench. what does the enzyme do? a it breaks down one chemical into a different, very stinky compound. b it creates complex chemical compounds that cause the plants bad odor. c it causes the plant to rot, releasing a bad smell. d it combines two chemicals into a new element with a terrible stench. 4. which of the following statements about the gene arhgap36 is true? i. orange cats have a mutation that increases the activity of the gene arhgap36. ii. in cats, increased activity of the arhgap36 gene causes color - producing cells to create reddish pigments. iii. the gene arhgap36 produces orange fur or hair in all species of mammals. a i only b i and ii c i and iii d i, ii, and iii 5. researchers found that 28 of the most populous cities in the u.s. are sinking. what is the main cause of this trend? a humans are using too little groundwater. b humans are using too much groundwater. c flooding is increasing. d flooding is decreasing. 6. which of the following cities was not sinking from 2018 to 2021? a boston b houston c san jose d seattle 7. scientists recently studied fluorescent pigments in the feathers of long - eared owls. what did they discover about these pigments? a the pigments are more concentrated in the feathers of female owls. b the pigments glow brighter as the owls age. c the pigments only glow under normal sunlight. d the pigments are found only in very young owls. 8. why is ada lovelace considered the first computer programmer? a she wrote poems that contained detailed descriptions of the first computer. b she built a computing device called the analytical engine. c she calculated a specific sequence of numbers by hand. d she wrote a series of instructions that an early computer could follow. 9. in 2000, about half of ____ were women. a computer workers b life and physical scientists c mathematical workers d social scientists 10. which of the following statements about pizza is true? a five million pizzas are sold worldwide each year. b about one in eight americans eat pizza on any given day. c the crust of a typical chicago deep - dish pizza is about six inches thick. d all of the above

Explanation:

1. Northern giant hornets can destroy a hive of honey - bees in just a few hours, which is why they are called "murder hornets".
2. Northern giant hornets, paper wasps, and bumblebees can be within the given length range.
3. The enzyme breaks down one chemical into a different, very stinky compound to create the stench.
4. Orange cats have a mutation that increases the activity of the gene Arhgap36 and increased activity of this gene in cats causes color - producing cells to create reddish pigments.
5. Over - use of groundwater by humans is the main cause of the sinking of many U.S. cities.
6. There is no information suggesting San Jose was sinking from 2018 - 2021 among the given cities.
7. Scientists found that the pigments glow brighter as the long - eared owls age.
8. Ada Lovelace is considered the first computer programmer because she wrote a series of instructions that an early computer could follow.
9. In 2000, about half of life and physical scientists were women.
10. About one in eight Americans eat pizza on any given day.

Answer:

1. C
2. D
3. A
4. B
5. B
6. C
7. B
8. D
9. B
10. B