August 2024 Living Environment Regents Questions 1-10 Question Preview (ID: 63441)

The Questions In This Practice Exam Are Thoughtfully Crafted To Assess Your Knowledge And Skills. They Cover A Range Of Topics And Formats, Offering A Valuable Opportunity For Self-assessment And Preparation. TEACHERS: click here for quick copy question ID numbers.

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The questions in this practice exam are thoughtfully crafted to assess your knowledge and skills. They cover a range of topics and formats, offering a valuable opportunity for self-assessment and preparation.

a) organelles work independently

b) all cells have the same shape and function

c) insulin is produced when protein levels are low

d) stimuli are detected, and actions are taken

Wolves are important predators in some ecosystems. If wolves are removed from their environment, the ecosystem is in danger of becoming unstable due to

a) a reduction of autotrophs when the number of herbivores is not being kept in check by the wolves

b) a decrease in the number of herbivores because they will not be able to reach carrying capacity

c) an increase in the biodiversity of the remaining animal and plant species

d) some species of herbivores taking over the niche the wolves occupied

Which statement best explains how deforestation that is the result of forest fires can contribute to global warming?

a) Burning the trees adds smoke to the atmosphere and blocks sunlight.

b) Burning the trees adds carbon dioxide to the atmosphere

c) Deforestation removes trees that produce carbon dioxide through the process of photosynthesis.

d) Deforestation immediately increases ecosystem stability needed in the burned area.

This best illustrates that

a) technological advances often involve environmental trade-offs

b) when humans modify their environment it always has effects that cannot be reversed

c) industrialization has had a positive effect on the health of river ecosystems

d) the construction of dams affected abiotic factors in the river but not biotic factors

In humans, lactose is broken down into glucose and galactose in the presence of a particular enzyme. It is most likely that the enzyme that breaks down lactose

a) breaks down several other types of food in the stomach

b) is involved in other reactions when the temperature and pH are ideal

c) helps in the synthesis of complex sugars during autotrophic nutrition

d) is not involved in other types of reactions because enzymes are specific

Td does not protect against pertussis because the

a) Tdap vaccine is given to treat pertussis

b) Td vaccine does not contain the antibodies from pertussis to fight the bacteria

c) Tdap vaccine contains a small amount of the bacteria that causes pertussis

d) Td vaccine does not stimulate the immune system of people to recognize pertussis antigens

This is of concern because it

a) decreases plastic recycling by primary consumers

b) increases the risk of harmful substances in our food supply

c) decreases the producers in the ecosystem

d) increases the biodiversity of the ocean

A valid conclusion based on the data collected over this nine-week study is that

a) animals that eat duckweed have the greatest effect on duckweed population size

b) duckweed populations die off after completing a two-week life cycle in the ditch

c) only changes in temperature affect duckweed population size

d) the size of the duckweed population is kept stable by limited resources in the ditch

Which statement explains why the organisms in some ecosystems, such as rainforests, deserts, and oceans, are different from each other?

a) The living organisms in each ecosystem have different needs and produce the physical conditions that they require.

b) Each ecosystem contains different types of living organisms that change each of the physical conditions present there.

c) They all have the same physical conditions present, but the living organisms use them in different ways.

d) Each ecosystem contains different physical conditions that determine the type of living organisms present there.

Which substances are required for the production of carbohydrates in green plants?

a) oxygen and nitrogen

b) carbon and glucos

c) carbon dioxide and water

d) hydrogen and starch

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