The African Turquoise Killifish

With the passage in mind, what kind of research would Professor Paul Shiels conduct in order to learn more about slowing or stopping aging in humans?

• A questionnaire for scientists to explain their opinions about diapause.

• A study about hibernating animals.

• An experiment testing nematode worm larvae's longevity.

• A study about the fast-aging primates of Costa Rica.

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CCSS.W.8.7

CCSS.W.8.8

Which sentence from the article BEST explains why the killifish's ability to suspend aging might not apply to humans?

• However, when the killifish embryos are in diapause, they're not passively waiting for improved environmental conditions.

• In the study, Brunet compared killifish embryos that halted their growth to those that bypassed diapause and immediately entered adulthood.

• This is because it would involve keeping adult tissues in a suspended state.

• Over 130 species of mammals - from mice to bears -- also have some form of diapause.

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CCSS.RI.8.1

CCSS.RI.8.8

Which detail from the article illustrates that a killifish's body is sensitive to the environment?

• Killifish embryos do not age while in diapause.

• Learning about diapause can lead scientists to learn more about organ regeneration.

• Killifish enter diapause when their ponds dry up.

• Entering diapause did not affect a killifish's ability to reproduce.

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CCSS.RI.8.1

CCSS.W.8.9A

What is the central idea of the article?

• Some animals, including the African Turquoise Killifish, can enter a state of suspended activity called diapause.

• Nematode worm larvae can enter diapause when they encounter a lack of food.

• Scientists might be able to figure out how to make humans enter diapause.

• Killifish live in ponds in Mozambique and Zimbabwe.

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CCSS.RI.8.2

CCSS.RL.8.2

What causes killifish in Mozambique and Zimbabwe to enter diapause?

• They hibernate every winter.

• Their ponds dry up during the dry season.

• They are unable to find food.

• They are too cold during the winter.

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CCSS.RI.8.1

CCSS.RI.8.2

What causes nematode worm larvae to enter diapause?

• being too cold

• ponds drying up due to the dry season

• lack of food or overcrowded environment

• hiding from predators

How do we know that killifish don't age during diapause?

• Paul Shiels did a study on organ regeneration that proved it.

• Scientists observed them in the wild.

• Their ponds dry up during the dry season in Mozambique.

• Anne Brunet compared killifish who did and did not enter diapause.

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CCSS.RI.8.1

CCSS.RI.8.8

CCSS.W.8.9A

CCSS.W.8.1B

In paragraph 10, what is the meaning of the word subsequent?

• later

• before

• prior

• important

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CCSS.L.8.4A

CCSS.L.8.4B

CCSS.RI.8.4