Living Environment Review

Which organisms and set of characteristics are correctly paired?

• fungi—carry out photosynthesis and heterotrophic nutrition

• plants—carry out respiration and autotrophic nutrition

• decomposers—carry out photosynthesis and autotrophic nutrition

• animals—carry out autotrophic nutrition and heterotrophic nutrition

Humans have an effect on ecosystems when they use native grasslands or forested areas for farming or urban use. One negative effect of these changes on the ecosystem is that there will be

• less biodiversity

• more homes

• successful economic growth

• increased food production

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Finches on the Galapagos Islands express a variety of traits. Variability in the offspring of these finches is a result of

• mutation and cloning

• meiosis and mutation

• mitosis and asexual reproduction

• mitosis and genetic recombination

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NGSS.MS-LS3-2

Exposure to certain environmental toxins, such as pesticides, may reduce fertility in males by interfering with their ability to produce gametes. These toxins are most likely having an effect on the

• testes and progesterone

• ovaries and testosterone

• ovaries and estrogen

• testes and testosterone

Tags

NGSS.MS-LS1-5

Which change is an example of a response to a stimulus?

• The pupil of an eye decreases in size in bright light.

• A leaf absorbs sunlight in the morning.

• The water level of a pond rises on a rainy day

• A dead tree decays after many years.

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NGSS.MS-LS1-8

Many oak trees are cut down and removed from an oak-hickory forest. A likely result of the direct harvesting of the oak species would be the

• disruption of natural cycles

• conservation of these natural forest resources

• recycling of all the nutrients in the forest

• prevention of the extinction of animals native to the area

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which statement describes an event that would most severely disrupt the process of ecological succession in an area?

• The season changes from spring into summer.

• Native plants are planted in an abandoned fi eld.

• Plants and animals begin to colonize a newly formed volcanic island.

• A dam is built on a river to form a reservoir

Tags

NGSS.MS-LS2-4

The processes of diffusion and active transport are both used to

• break down molecules to release energy

• move molecules into or out of cells of the body

• bring molecules into cells when they are more concentrated outside of the cell

• move molecules against a concentration gradient, using ATP molecules

Botulinum toxin is a substance that can cause paralysis in humans. The effects of the toxin are due to the blocking of a signaling molecule that is necessary for communication between nerve cells. The toxin most likely interferes with the normal functioning of a

• chromosome

• DNA molecule

• receptor

• digestive hormone

When rain forests are cut down, there is a

• loss of fossil fuels that could be used by industry

• release of excess oxygen to the atmosphere

• release of chemicals which cause helpful mutations

• loss of genetic material available for research

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5