Living Environment Regents Review 1

Front

What is selective breeding?

Back

Selective breeding is the process of choosing specific plants or animals to reproduce based on desired traits, such as higher yield or disease resistance.

Front

What is the primary source of energy in an ecosystem?

Back

The primary source of energy in an ecosystem is solar energy, which is captured by plants during photosynthesis.

Front

Why do different body cells of the same individual look and function differently?

Back

Different body cells look and function differently because different genes are activated in different kinds of cells.

Front

How do variations in asexual organisms like amebas occur?

Back

Variations in asexual organisms like amebas most commonly occur through random mutations.

Front

What causes cancerous growths at the cellular level?

Back

Cancerous growths are often caused by gene mutations that lead to abnormal mitotic cell division.

Front

What is genetic engineering?

Back

Genetic engineering is the direct manipulation of an organism's genes using biotechnology to alter its characteristics.

Front

What is cellular respiration?

Back

Cellular respiration is the process by which cells convert glucose and oxygen into energy, carbon dioxide, and water.

Front

What is the role of photosynthesis in an ecosystem?

Back

Photosynthesis allows plants to convert solar energy into chemical energy, providing food and oxygen for other organisms.

Front

What is a gene mutation?

Back

A gene mutation is a change in the DNA sequence that can lead to changes in the structure and function of proteins.

Front

What is the difference between mitosis and meiosis?

Back

Mitosis is the process of cell division that results in two identical daughter cells, while meiosis is a type of cell division that produces gametes with half the number of chromosomes.