August 2019 Living Environment Regents Questions 31-40 Question Preview (ID: 56861)

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The type of information directly provided by these fossil footprints is useful because it

a) offers details about how these individuals changed during their lifetime

b) offers data regarding their exposure to ultraviolet (UV) radiation

c) is a record of information about what these individuals ate during their lifetime

d) is a record of some similarities and differences they share with present-day species

Which statement best explains why the safety of PPIs is now in question when clinical experiments in the 1980s provided evidence that they were safe?

a) Researchers have been able to collect more data than were available in the 1980s.

b) Fewer people had acid reflux in the 1980s compared to today.

c) The medication containing PPIs has changed since the 1980s when tests were done.

d) The original experiments in the 1980s used only test animals and did not use human subjects.

The three arrows in the diagram each represent a process known as

a) mitotic cell division

b) meiotic cell division

c) fertilization of gamete cells

d) differentiation of tissues

The results of this scientific investigation will most likely lead other scientists to hypothesize that

a) human sex cells also contain the TRPV4 protein

b) other reptiles may have the TRPV4 protein in their eggs

c) the TRPV4 protein affects the growth of plants

d) the TRPV4 protein is present in all of the foods eaten by alligators

Which information was most essential in preparing to carry out this scientific investigation?

a) a knowledge of the variety of mutations found in American alligator populations

b) the arrangement of the DNA bases found in the TRPV4 protein

c) the effects of temperature on the incubation of alligator eggs

d) a knowledge of previous cloning experiments conducted on alligators and other reptiles

The movement of the calcium ions into certain cells is most likely due to

a) the destruction of the TRPV4 when it contacts the cell membrane

b) the action of TRPV4 proteins on the cells involved with sex determination

c) the sex of the alligator embryo present in that particular egg

d) the action of receptor proteins attached to the mitochondria in alligator sex cells

Environmental changes, such as global warming, could affect species such as the American alligator because even slight increases in environmental temperature could

a) lead to an overabundance of females and few, if any, males

b) lead to an overabundance of males and few, if any, females

c) cause the breakdown of the TRPV4 protein in female alligators

d) increase the rate at which calcium ions exit the sex cells

Which human activity can have a negative impact on the stability of a mature ecosystem?

a) replanting trees in areas where forests have been cut down for lumber

b) building dams to control the flow of water in rivers, in order to produce electricity

c) preserving natural wetlands, such as swamps, to reduce flooding after heavy rainfalls

d) passing laws that limit the dumping of pollutants in forests

Energy in this ecosystem passes directly from the Sun to

a) herbivores

b) consumers

c) heterotrophs

d) autotrophs

The risk to the horses during the roundups compared to the entire loss of plants and soils is considered

a) selective breeding

b) a technological fix

c) direct harvesting

d) a trade-off

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