NY Regents Life Science Biology Practice Questions - Regents Examination in Life Science Biology Exam - NY Regents Life Science Biology Practice Questions - Regents Examination in Life Science Biology Exam

Question 1

A change in a DNA sequence causes one amino acid in a membrane receptor to be replaced. Which result would most directly show a structure-and-function relationship?

The cell divides more slowly because the receptor is a carbohydrate The receptor changes shape and no longer binds its signal molecule effectively The nucleus moves out of the cell because DNA is now outside the chromosome The organism immediately produces a new species with the changed receptor

Correct Answer:

The receptor changes shape and no longer binds its signal molecule effectively

Question 2

After a person begins running, breathing rate and heart rate both increase. Which statement best explains why these systems respond together?

The respiratory system makes blood cells, and the circulatory system stores oxygen The two systems interact to deliver more oxygen to cells and remove more carbon dioxide The digestive system stops all cell activity during exercise The nervous system replaces the need for oxygen during exercise

Correct Answer:

The two systems interact to deliver more oxygen to cells and remove more carbon dioxide

Question 3

A person's blood glucose rises after a meal. In response, the pancreas releases insulin, and cells take in more glucose. Which statement best describes this process?

It is positive feedback because the response increases blood glucose further It is negative feedback because the response moves blood glucose back toward a set range It is diffusion because insulin is a gas moving from high to low concentration It is natural selection because only insulin-producing cells survive

Correct Answer:

It is negative feedback because the response moves blood glucose back toward a set range

Question 4

Red blood cells placed in pure water swell and may burst. Which explanation best accounts for this observation?

Water moves into the cells by osmosis because the cell interior has a higher solute concentration than the surrounding water Salt leaves the cells by active transport until the membrane dissolves Oxygen moves into the cells and pushes the membrane outward The cells perform photosynthesis and produce extra water inside

Correct Answer:

Water moves into the cells by osmosis because the cell interior has a higher solute concentration than the surrounding water

Question 5

Which statement best explains why enzymes are important in living cells?

They provide genetic information for all inherited traits They speed up specific chemical reactions without being used up They make reactions impossible at body temperature They replace the need for reactants in metabolism

Correct Answer:

They speed up specific chemical reactions without being used up

Exam overview

About this Exam

Prepare with the NY Regents Life Science Biology Practice Questions - Regents Examination in Life Science Biology Exam practice quiz. This question bank includes 100 questions covering cells, explanation, plants, water, and cell. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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NY Regents Life Science Biology Practice Questions - Regents Examination in Life Science Biology Exam

This practice set contains 100 questions from the matching question bank and focuses on cells, explanation, plants, water, and cell. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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NY Regents Life Science Biology Practice Questions - Regents Examination in Life Science Biology Exam

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