Mix Living Environment Regents Questions

1. There are over 2000 kinds of edible insects in the world, and they are becoming an increasingly popular source of protein. One cup of cricket flour contains over 28 grams of protein. The building blocks of the protein in cricket flour are

• 0. amino acids

• 0. water

• 0. simple sugars

• 0. carbohydrates

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1. Which list contains only abiotic conditions that might be found in a pond ecosystem?

• 1. temperature of the water, green plant populations, dissolved minerals in the water

• 1. temperature of the water, dissolved oxygen in the water, dissolved minerals in the water

• 1. bacteria, dissolved minerals in the water,

     temperature of the water

• 1. dissolvedoxygeninthewater,fishpopulations,

     insect populations

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1. Protein synthesis is accomplished primarily by the interaction of which two cell structures?

• 0. vacuoles and mitochondria

• 0. ribosomes and vacuoles

• 0. nuclei and ribosomes
     

• 0. nuclei and mitochondria

The diagram below represents various factors in an area.

The diagram best represents

• 1.  the recycling of energy in a forest community

• 1. ecological succession after climatic changes

• 1.  competition for limited resources in a

     population

• 1. the flow of materials in a forest community

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In which cell structure is energy extracted from nutrients?

• chloroplast

• ribosome

• mitochondrion

• vacuole

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9. Dodder plants consist of tangled masses of yellow, leafless vines and contain few chloroplasts. The vines twist around and grow into the stems of other plants and absorb water and nutrients from them. Which statement best describes this relationship?

• 1. Dodder plants are parasitic, relying on host organisms for resources.

• 1. Dodder plants are decomposers, returning organic material back to the environment.

• 1. Dodder plants are producers, while the other plants that they attach to are consumers.

• 1.  Dodder plants are consumers, transferring

     energy to other plants in the ecosystem.

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9. Two kittens in a litter are genetically different from each other and from their parents. These genetic differences are most directly due to

• 0. sexual reproduction

• 0. asexual reproduction

• 0. cloning
     

• 0. evolution

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A genetic change that occurs in a body cell of a mouse will not contribute to the evolution of the species because

• 1. body cell mutations will cause the cell to die before it reproduces

• 1. the evolution of a species can result from changes in reproductive cells, not body cells

• 1. random changes are repaired by enzymes before they are passed on to offspring

• 1. the evolution of a species is caused by natural selection, not genetic variation

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Scientists who have examined the fossil record have noted that some species have changed very little over long periods of geologic time. The lack of change in such organisms is most likely because

• 1. all members of their population were genetically identical, and they lived in a rapidly changing environment

• 1. there was a large amount of variation in their population, and the environment changed frequently

• 1. they could move between different environ- ments when food supplies became scarce

• 1. the environment that they lived in remained

     the same, and they were well-adapted to it

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Doctors often use certain medications to treat infections. A few people have a reaction to some of these medications, such as itching, swelling, or trouble breathing. This is an example of

• 1. using antibodies to cure a medical problem

• 1. the body’s immune system overreacting to a

     usually harmless substance

• 1. the body creating a mutation to fight

     unknown pathogens

• 1. a vaccine causing the body to produce

     antigens against the infection

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