Explanation

A food chain is a sequence of organisms that shows how food energy is transferred from one organism to another through consumption.

It typically starts with a producer (like a plant) and ends with a top predator, showing how energy is passed through repeated eating and being eaten.

Explanation

A biome is a large region of the Earth's surface that is recognized by its specific climate, vegetation, and animal life.

Biomes are often defined by factors like temperature, precipitation, and geography, and they can be terrestrial (land-based) or aquatic (water-based).

Explanation

• An ecosystem is a specific area where living organisms (the community) interact with each other and their non-living environment (such as water, air, soil, sunlight, and temperature).
• It's a self-contained system where living and non-living components work together to create a functional unit.

Explanation

The biosphere is the global sum of all ecosystems on Earth, encompassing everything from the tiniest microbe to the mightiest tree.

It's the zone of life on our planet, where all living things exist and interact.

The biosphere includes land, oceans, atmosphere, and even the depths of the Earth's crust.

Explanation

Genotype refers to the genetic constitution of an individual, which is the specific set of genes and alleles that an individual possesses.

It is the genetic makeup of an individual that determines their traits and characteristics.

Explanation

Homozygous refers to the state where an individual inherits two identical copies of a gene (one from each parent) that code for the same trait or characteristic.

Explanation

DNA replication is the process by which a cell makes an exact duplicate of its DNA before cell division.

This process involves the unwinding of the double helix, the synthesis of a new complementary strand.

The formation of two identical daughter molecules.

Explanation

A gene is a small segment of DNA that contains the information needed to encode a single protein.

It is the basic unit of heredity and is made up of a sequence of nucleotides (DNA building blocks) that are organized into codons, which specify the amino acids that make up a protein.

Explanation

The outer part of the DNA helix is made up of sugar (deoxyribose) and phosphate molecules, which form the backbone of the DNA double helix.

This sugar-phosphate backbone is referred to as the "upright" or "backbone" of DNA.

Explanation

Chromatin is the chemical material that makes up chromosomes, consisting of DNA, histone proteins, and other non-histone proteins.

It's the complex of DNA and proteins that form the chromosome.