June 2023 Living Environment Regents Questions 31-40 Question Preview (ID: 62094)

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The most likely reason decreased levels of oxygen in the water result in a decrease in the body size of some fish species is

a) due to the presence of more plant species carrying out photosynthesis

b) the species producing more ATP molecules and less oxygen

c) due to an increase in the size of the gills bringing in more carbon dioxide

d) the species being unable to meet the energy requirements of a larger body size

One human activity that most directly contributes to the decrease in the amount of oxygen present in ocean water is

a) overfishing, causing a lack of biodiversity

b) planting more trees, causing more soil erosion

c) introducing foreign species, causing more competition

d) industrialization, which releases large amounts of carbon dioxide into the atmosphere

Which statement is correct regarding the interaction of the levels of estrogen and progesterone?

a) When the amounts of estrogen and progesterone are at the same level, an egg begins to develop in the ovary.

b) When an egg is released from the ovary, the level of estrogen is higher than the level of progesterone.

c) The level of progesterone controls the cycle since it is always higher than the level of estrogen.

d) After an egg is released from the ovary,the level of estrogen keeps increasing,causing the level of progesterone to decrease.

Which conclusion is most valid, based on the data?

a) Male juncos with a higher percentage of the male chemical have greater reproductive success.

b) Male juncos with a lower percentage of the male chemical have greater reproductive success.

c) The percentage of the male chemical has no effect on the reproductive success of the male juncos.

d) There is a negative relationship between the % of male chemical produced and the reproductive success of the male juncos.

If the pika populations are completely removed from the grasslands of the Tibetan plateau, the most likely result will be that the grassland ecosystems will become

a) 1

b) 2

c) 3

d) 4

modification of scientific knowledge illustrates that

a) scientists do not communicate with each other and often make mistakes

b) all scientific explanations are tentative and subject to change or improvement

c) scientists often ignore evidence that does not help prove their theory

d) hypotheses seldom change even when new discoveries are made

The activity of nuclease enzymes would most likely result in the release of

a) four different kinds of molecular bases

b) glucose

c) a variety of different amino acids

d) hormones

The end products resulting from the action of amylase would most likely be

a) starches and proteins

b) carbon dioxide and water

c) amino acids

d) simple sugars

Another important molecule not shown in the diagram is also produced by the pancreas. It functions to decrease glucose levels in the blood. This molecule is

a) progesterone

b) insulin

c) testosterone

d) ATP

This process produces four sperm cells, each with

a) all of the genetic information contained in the diploid germ cell

b) one-quarter of the genetic information contained in the diploid germ cell

c) twice the genetic information found in the diploid germ cell

d) one-half of the genetic information found in the diploid germ cell

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