Regents Questions January 2023 Question Preview (ID: 61766)


Random Questions From January 2023 Regents Exam. TEACHERS: click here for quick copy question ID numbers.

The removal of mitochondria from a typical animal cell would have an immediate effect on the cell’s production of
a) DNA
b) ATP
c) oxygen
d) glucose

DNA is formed using four kinds of base subunits. In a double-stranded segment of DNA, the percentage of the base C is 18%. What is the approximate percentage of base T?
a) 18%
b) 32%
c) 36%
d) 64%

Which factor would be an abiotic limiting factor for fish living in a lake in New York State?
a) amount of algae
b) number of humans fishing
c) number of fish predators
d) acidity of the water

A native species is competing for resources with a nonnative species that was accidentally introduced into the area. The nonnative species is more likely to survive than the native species when
a) both species eat the same food
b) predators prey on both species
c) the native species is immune to a particular pathogen present in the ecosystem
d) the nonnative species has no natural enemies present in the ecosystem

When a person receives a transplanted organ, many medications are necessary to keep the organ from being rejected. The process of organ rejection is similar to the one involved in
a) the growth of cancerous tissue
b) an allergic reaction
c) a genetic mutation
d) the production of an antigen

One result of the ability of organisms to detect and appropriately respond to stimuli is
a) an organ malfunction
b) an allergic reaction
c) feedback loop
d) gene manipulation

Some organisms have variations. Two sources of these variations are
a) mitotic and meiotic cell division
b) mutations and sexual reproduction
c) cloning and sexual reproduction
d) natural selection and evolution

In order to prepare for a future outbreak of Ebola, a harmful virus, two vaccines were tested. In order for either of these vaccines to be effective, they must
a) cause the immune system to produce special proteins that will recognize and destroy the virus
b) be able to destroy the DNA code that produces white blood cells that can carry the virus
c) stimulate the human body to produce antigens that can attach to and destroy the Ebola virus
d) produce bacterial cells that can attack the Ebola virus

When a plant is in a hot and dry environment, the guard cells may close the stomate openings in the leaves. This action will directly
a) maintain homeostasis by reducing the evaporation of water
b) harm the plant by cutting off its oxygen supply
c) maintain homeostasis by preventing carbon dioxide from entering
d) harm the plant by cutting off its energy supply

Which statement about the functioning of the human reproductive system is correct?
a) The zygote helps the mother provide milk to the fetus before it is born
b) Testes produce unfertilized eggs and release them so that they can be fertilized by sperm.
c) Ovaries are where male gametes undergo meiosis to reduce their chromosome number.
d) The uterus is where the fetus develops internally until birth.

Destruction of ocean habitats by pollution today means that the organisms living there may not survive in the future. By polluting the oceans, humans are
a) helping advance economic gains by using resources wisely
b) altering the equilibrium of ocean ecosystems
c) decreasing the rate of species extinction
d) increasing the stability of the oceans

A Christmas tree farmer cuts down a native forest to plant Frasier fi r trees. Compared to the original forest, the newly planted Christmas tree farm will most likely be
a) more stable and more diverse
b) more stable and less diverse
c) less stable and more diverse
d) less stable and less diverse

Each of the cells present in a woman contains a complete set of chromosomes. The only exceptions are her
a) skin cells
b) egg cells
c) nerve cells
d) lung cells

Human society has become increasingly dependent on industry and technology. While this has had many benefits, it also has had the disadvantage of
a) reducing the amount of food that can be produced by one acre of farmland
b) lowering the level of carbon dioxide available for plants to use for photosynthesis
c) raising the number of producers worldwide to dangerous levels
d) increasing our reliance on energy sources such as fossil fuels

A trade-off was made by the local population that has increased the number of turtles in the area. Which statement best describes the trade-off?
a) Placing barriers around the turtle nests made it easier for tourists to find and photograph them
b) The night patrols kept tourists from raiding the turtle nests and selling the eggs
c) The shops agreed to close early, even though they will lose customers, so that the turtles could have a better chance to nest
d) no effect on the shops or turtle reproduction

One factor that could result in an increase in the population size after year 10 would be
a) increased competition within the species
b) additional food became available
c) predators of the species became more numerous
d) a new parasite negatively affected reproduction in the species

A student was jumping rope and noticed that her heart was beating faster. The student’s heart rate probably increased as a result of
a) a decrease in the need to provide waste materials to muscle cells
b) an increase in the number of red blood cells circulating through her leg muscles
c) an increase in carbon dioxide in her blood
d) a decrease in respiration in her blood cells

In gel electrophoresis, the fragments of DNA are separated into bands when the machine is plugged in based upon
a) pH and color
b) charge and radioactivity
c) electoral charge and size
d) color and size

During the Making Connections lab, several pulse readings are taken and averaged in order to
a) get the heart pumping faster
b) increase muscle fatigue
c) increase reliability
d) increase lung size

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