Question

2 how is a population of amoeba likely to respond to a lack of nutrients in their environment? (a) group together and travel in search of food (b) use energy from the sun to make their own food (c) feed on bacteria until their normal food is available (d) form a capsule around each and become dormant until there is food 3 read the following selection. some biofilms are harmful and may grow on medical equipment and cause infection. they also form on industrial materials, such as oil and gas pipelines. biofilm - associated corrosion of these materials accounts for 20 percent of total corrosion damages, costing billions of dollars to prevent and fix. this type of corrosion may even result in environmental damages from pipeline leaks. which phrase from the selection helps explain what \corrosion\ means? (a) cause infection (b) costing billions of dollars (c) to prevent and fix (d) damages from pipeline leaks 4 image 7 shows a close - up of the axon of one neuron and the dendrite of another. based on the article, what is the explanation for this detail? (a) to show how neurotransmitters get sent and received between two neurons (b) to illustrate how neurotransmitters are created by these neuron parts (c) to show that neurotransmitters are protected by special sacs (d) to highlight the idea that some neurotransmitters get lost in transport 5 read the list of phrases from the article. 1. incredible feats 2. sorts critical parts 3. accomplish vital tasks why does the author use these words? (a) to convey a sense of how surprising it is that organelles work inside multicellular organisms (b) to convey a sense of how organelles help each other to complete tasks (c) to convey a sense of how difficult it is for organelles to complete their jobs (d) to convey a sense of how important organelles are in multicellular organisms

Explanation:

Question 2:

Amoebas form a capsule and become dormant in nutrient - poor conditions. They don't group to search for food like some multicellular organisms, can't photosynthesize, and don't specifically feed on bacteria as a response to lack of nutrients.

Question 3:

Corrosion causes damage, and "damages from pipeline leaks" is related to the negative impact of corrosion. "Cause infection" is about bio - films on medical equipment, "costing billions of dollars" is about the financial impact, and "to prevent and fix" is about actions taken regarding corrosion, not the definition.

Question 4:

A close - up of axon and dendrite is to show neurotransmitter sending and receiving between neurons. It's not about how neurotransmitters are created or protected, or about loss in transport.

Question 5:

Words like "incredible", "critical", and "vital" emphasize the importance of organelles in multicellular organisms.

Answer:

A. D
B. D
C. A
D. C