VA Science 7 LIFE SCIENCE REVIEW

Front

What is an ecosystem?

Back

An ecosystem is all living and non-living things that interact in a specific area.

Front

What are the offspring of a cross between a homozygous recessive (tt) and a homozygous dominant (TT) pea plant?

Back

100% tall, all offspring would carry the recessive gene.

Front

In a host-parasite relationship, who is the host?

Back

The host is the organism that is harmed or affected by the parasite.

Front

What is the function of mitochondria in a cell?

Back

Mitochondria are known as the 'powerhouse' of the cell, as they produce energy through cellular respiration.

Front

Where is genetic material (DNA) found in a cell?

Back

Genetic material (DNA) is found inside the nucleus of a cell.

Front

Define the term 'host' in biological terms.

Back

A host is an organism that harbors a parasite, providing it with nourishment and shelter.

Front

What is the role of a parasite in a host-parasite relationship?

Back

A parasite is an organism that lives on or in a host and benefits at the host's expense.

Front

What is the primary function of the nucleus in a cell?

Back

The nucleus controls the cell's activities and houses the cell's genetic material (DNA).

Front

What is the significance of the term 'homozygous'?

Back

Homozygous refers to having two identical alleles for a particular gene.

Front

What does 'heterozygous' mean?

Back

Heterozygous refers to having two different alleles for a particular gene.