It is suggested in the title.
"Are Commercial Honeybees Making Wild Bees Sick?"
by Berly McCoy
Everyone wants to save the bees. But as populations decline every year, we may be saving them to death.
Human efforts to breed more of these insects in artificial beehives and plant more flowers may seem the obvious way to stave off heavy losses.
New research shows the answer is not that clear cut, because viruses may be spilling over from commercial honeybee colonies into wild bee populations, according to a study from the University of Vermont published Wednesday in PLOS One.
How does the central idea of the article first emerge?
(1 point)
Responses
It is suggested in the title.
It is suggested in the title.
The third paragraph states it directly.
The third paragraph states it directly.
The first paragraph states it directly.
The first paragraph states it directly.
The subtitles make the central idea clear.
7 answers
“How a Children’s Toy Could Help Fight Malaria”
by Jason Daley
One of the most basic and necessary pieces of equipment in a medical lab is a centrifuge. Often bulky and expensive, this device (in the most simple terms) spins things. And spinning things like blood can separate out its components, allowing doctors to diagnose diseases like malaria. But the lack of electricity and resources in rural regions around the world means no centrifuge. Now, a simple new 20-cent gadget could change all that, and it's based on an unusual source of inspiration: the whirligig.
"There are more than a billion people around the world who have no infrastructure, no roads, no electricity," says Manu Prakash, a physical biologist at Stanford and inventor of the new gadget. When he visited Uganda in 2013 he found that clinics either did not have centrifuges or didn't have the juice to power them. “One clinic used its broken centrifuge as a doorstop,” Prakash tells Devin Powell at Nature.
"I realized that if we wanted to solve a critical problem like malaria diagnosis, we needed to design a human-powered centrifuge that costs less than a cup of coffee,” Prakash says in a press release.
When he returned to Stanford, Parkash began brainstorming ideas with one of his post-docs, Saad Bhamla, examining at all sorts of spinning things, reports Madeline K. Sofia at NPR. They quickly began focusing on old-school, preindustrial toys like yo-yos and whirligigs.
“One night I was playing with a button and string, and out of curiosity, I set up a high-speed camera to see how fast a button whirligig would spin. I couldn’t believe my eyes,” Bhamla says in the press release. The button was rotating at 10,000 to 15,000 rpms.
The pair began prototyping small hand-powered centrifuges based on the whirligig principle. Their final model, the Paperfuge, spins at 125,000 rpm, the equivalent of a centrifuge costing $1,000 to $5,000, according to the press release.
The Paperfuge is made of a disk of paper coated in a polymer, reports Sofia. The disk is attached to two pieces of wood or PVC pipe via string. When the strings are pulled, the disk in the middle spins, acting as a centrifuge for a blood sample attached to the center of the disk. The team describes their work in the journal Nature Biomedical Engineering.
Prakash and Bhamla recently returned from successful field trials of the Paperfuge in Madagascar where they used it to test for malaria. While the gadget only takes two minutes to separate blood, reports The Economist, it takes 15 minutes of whirligigging for malaria-diagnosing separations.
Once the blood is separated, however, it needs to be examined by a microscope. Luckily, several years ago Prakash also created the Foldscope, a $1 paper microscope with optical quality similar to conventional microscopes that will begin distribution in 2018.
Which sentence best conveys the central idea of the informational text?
(1 point)
Responses
While the gadget only takes two minutes to separate blood, reports The Economist, it takes 15 minutes of whirligigging for malaria-diagnosing separations.
While the gadget only takes two minutes to separate blood, reports The Economist, it takes 15 minutes of whirligigging for malaria-diagnosing separations.
One of the most basic and necessary pieces of equipment in medical labs is a centrifuge.
One of the most basic and necessary pieces of equipment in medical labs is a centrifuge.
The pair began prototyping small hand-powered centrifuges based on the whirligig principle.
The pair began prototyping small hand-powered centrifuges based on the whirligig principle.
"I realized that if we wanted to solve a critical problem like malaria diagnosis, we needed to design a human-powered centrifuge that costs less than a cup of coffee," Prakash says in a press release.
by Jason Daley
One of the most basic and necessary pieces of equipment in a medical lab is a centrifuge. Often bulky and expensive, this device (in the most simple terms) spins things. And spinning things like blood can separate out its components, allowing doctors to diagnose diseases like malaria. But the lack of electricity and resources in rural regions around the world means no centrifuge. Now, a simple new 20-cent gadget could change all that, and it's based on an unusual source of inspiration: the whirligig.
"There are more than a billion people around the world who have no infrastructure, no roads, no electricity," says Manu Prakash, a physical biologist at Stanford and inventor of the new gadget. When he visited Uganda in 2013 he found that clinics either did not have centrifuges or didn't have the juice to power them. “One clinic used its broken centrifuge as a doorstop,” Prakash tells Devin Powell at Nature.
"I realized that if we wanted to solve a critical problem like malaria diagnosis, we needed to design a human-powered centrifuge that costs less than a cup of coffee,” Prakash says in a press release.
When he returned to Stanford, Parkash began brainstorming ideas with one of his post-docs, Saad Bhamla, examining at all sorts of spinning things, reports Madeline K. Sofia at NPR. They quickly began focusing on old-school, preindustrial toys like yo-yos and whirligigs.
“One night I was playing with a button and string, and out of curiosity, I set up a high-speed camera to see how fast a button whirligig would spin. I couldn’t believe my eyes,” Bhamla says in the press release. The button was rotating at 10,000 to 15,000 rpms.
The pair began prototyping small hand-powered centrifuges based on the whirligig principle. Their final model, the Paperfuge, spins at 125,000 rpm, the equivalent of a centrifuge costing $1,000 to $5,000, according to the press release.
The Paperfuge is made of a disk of paper coated in a polymer, reports Sofia. The disk is attached to two pieces of wood or PVC pipe via string. When the strings are pulled, the disk in the middle spins, acting as a centrifuge for a blood sample attached to the center of the disk. The team describes their work in the journal Nature Biomedical Engineering.
Prakash and Bhamla recently returned from successful field trials of the Paperfuge in Madagascar where they used it to test for malaria. While the gadget only takes two minutes to separate blood, reports The Economist, it takes 15 minutes of whirligigging for malaria-diagnosing separations.
Once the blood is separated, however, it needs to be examined by a microscope. Luckily, several years ago Prakash also created the Foldscope, a $1 paper microscope with optical quality similar to conventional microscopes that will begin distribution in 2018.
Which sentence best conveys the central idea of the informational text?
(1 point)
Responses
While the gadget only takes two minutes to separate blood, reports The Economist, it takes 15 minutes of whirligigging for malaria-diagnosing separations.
While the gadget only takes two minutes to separate blood, reports The Economist, it takes 15 minutes of whirligigging for malaria-diagnosing separations.
One of the most basic and necessary pieces of equipment in medical labs is a centrifuge.
One of the most basic and necessary pieces of equipment in medical labs is a centrifuge.
The pair began prototyping small hand-powered centrifuges based on the whirligig principle.
The pair began prototyping small hand-powered centrifuges based on the whirligig principle.
"I realized that if we wanted to solve a critical problem like malaria diagnosis, we needed to design a human-powered centrifuge that costs less than a cup of coffee," Prakash says in a press release.
"I realized that if we wanted to solve a critical problem like malaria diagnosis, we needed to design a human-powered centrifuge that costs less than a cup of coffee," Prakash says in a press release.
Which sentences provide evidence that support the claim made in the first paragraph? Select the three correct answers.
(2 points)
Responses
Some have voiced hopes that the emergence of digital media would upend hiring structures that are frequently skewed toward men.
Some have voiced hopes that the emergence of digital media would upend hiring structures that are frequently skewed toward men.
One factor in this disparity is the fact that more men than women hold “hard” news beats such as politics and world news, where organizations often turn to hire management.
One factor in this disparity is the fact that more men than women hold “hard” news beats such as politics and world news, where organizations often turn to hire management.
A more diverse newsroom can yield a wider range of possibilities for coverage.
A more diverse newsroom can yield a wider range of possibilities for coverage.
Racial minorities fare even worse, comprising 13 percent of overall employees.
Racial minorities fare even worse, comprising 13 percent of overall employees.
Women run three out of the 25 biggest U.S. titles and one of the top 25 international titles.
Women run three out of the 25 biggest U.S. titles and one of the top 25 international titles.
It cited McClatchy, where women serve as 13 out of 29 executive editors, as a company that has done this effectively.
It cited McClatchy, where women serve as 13 out of 29 executive editors, as a company that has done this effectively.
(2 points)
Responses
Some have voiced hopes that the emergence of digital media would upend hiring structures that are frequently skewed toward men.
Some have voiced hopes that the emergence of digital media would upend hiring structures that are frequently skewed toward men.
One factor in this disparity is the fact that more men than women hold “hard” news beats such as politics and world news, where organizations often turn to hire management.
One factor in this disparity is the fact that more men than women hold “hard” news beats such as politics and world news, where organizations often turn to hire management.
A more diverse newsroom can yield a wider range of possibilities for coverage.
A more diverse newsroom can yield a wider range of possibilities for coverage.
Racial minorities fare even worse, comprising 13 percent of overall employees.
Racial minorities fare even worse, comprising 13 percent of overall employees.
Women run three out of the 25 biggest U.S. titles and one of the top 25 international titles.
Women run three out of the 25 biggest U.S. titles and one of the top 25 international titles.
It cited McClatchy, where women serve as 13 out of 29 executive editors, as a company that has done this effectively.
It cited McClatchy, where women serve as 13 out of 29 executive editors, as a company that has done this effectively.
The three sentences that provide evidence supporting the claim made in the first paragraph are:
-
One factor in this disparity is the fact that more men than women hold “hard” news beats such as politics and world news, where organizations often turn to hire management.
-
A more diverse newsroom can yield a wider range of possibilities for coverage.
-
Racial minorities fare even worse, comprising 13 percent of overall employees.
What methods can authors use to help readers navigate the evidence in a text? Select the two correct answers.(1 point)
Responses
separating a long text into chapters
separating a long text into chapters
asking readers questions within the text
asking readers questions within the text
keeping the text as short as possible
keeping the text as short as possible
presenting a claim and evidence
presenting a claim and evidence
using headings or subheadings in a short text
Responses
separating a long text into chapters
separating a long text into chapters
asking readers questions within the text
asking readers questions within the text
keeping the text as short as possible
keeping the text as short as possible
presenting a claim and evidence
presenting a claim and evidence
using headings or subheadings in a short text
The two methods authors can use to help readers navigate the evidence in a text are:
-
presenting a claim and evidence
-
using headings or subheadings in a short text