August 2024 Living Environment Regents Questions 11-20 Question Preview (ID: 63442)

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.

Answers? Play games to get them!

Which statement about competition in ecosystems is correct?

a) Organisms compete most when they occupy different niches and resources are plentiful.

b) Individuals need not compete, because resources such as water and food are always plentiful in ecosystems.

c) Organisms that compete successfully will survive, reproduce, and pass their traits on to their offspring.

d) Competition usually results in the extinction of a species, ensuring the survival of other species.

Which body system most directly enables all these functions to occur?

a) circulatory system

b) excretory system

c) digestive system

d) immune system

A scientist shaved a patch of white fur off the back of a Himalayan rabbit and applied an ice pack to the area for 30 minutes. The fur in the shaved area grew in black. The best explanation for why black fur grew in the shaved area is that

a) the food the rabbit ate during the experiment influenced fur color

b) the fur in the newly shaved area was younger than the white fur on the rest of the body

c) the ice pack caused a mutation in the genes that regulate fur color

d) warm and cold temperatures activate different genes for fur color

In order to make this possible, which process would scientists most likely use?

a) Treat the plants with chemical fertilizers to stimulate their growth

b) Provide the fungi with the same molecular bases that are found in plant protein.

c) Identify the gene that codes for the protein and introduce it into plant cells by genetic engineering.

d) Selectively breed a new type of fungus that does not require the nutrients that the plants provide.

A possible explanation for this relationship is that

a) eating a toxic plant increases the ability of these insects to survive and reproduce

b) milkweed populations are controlled by many insects

c) the milkweed benefits from the insects that can tolerate the toxin they produce

d) eventually the insects will become immune to the toxin

Which type of cell engulfs pathogens and marks them for killing?

a) red blood cell

b) white blood cell

c) nerve cell

d) muscle cell

Which choice below best completes the diagram with a correct label and definition for the box labeled X?

a) 1

b) 2

c) 3

d) 4

This loss of different species is a concern because it may

a) lead to an increase in diversity in the ecosystem

b) impact the energy flow and food supply within an ecosystem

c) produce increased nonrenewable resources

d) provide additional sources of potential medicines

Although the sphere has never been opened, groups of each kind of organism are still alive inside it. The most likely reason for this is because the populations have

a) remained in separate areas of the sphere and do not interact

b) adapted so that they do not require food

c) a constant source of energy because they cannot recycle gases and materials

d) a constant source of energy and recycle gases and materials

The vaccine must be given to the subjects before exposure to Ebola because

a) the vaccine will mutate the virus when a person gets infected

b) if a subject is infected with Ebola, it will destroy the vaccine

c) vaccines stimulate the subject’s immune system to react to future exposure to the virus

d) vaccines are only effective for a few days, so the patient must get the vaccine before exposure

Play Games with the Questions above at ReviewGameZone.com
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 63442 in the upper right hand corner or click here.