Biology Review

Front

What is the diffusion of water called?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

Which organism is the closest relative of the human on a cladogram?

Back

The Hare is the closest relative of humans on a cladogram.

Front

What is the process by which nuclear material is divided equally between two new cells?

Back

Mitosis is the process of nuclear division that results in two identical daughter cells.

Front

What part of the cell membrane is a phospholipid?

Back

A phospholipid is a molecule that makes up the cell membrane, consisting of a hydrophilic (water-attracting) head and two hydrophobic (water-repelling) tails.

Front

Which genotype is homozygous recessive?

Back

The genotype 'rr' is homozygous recessive.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells engulf substances from their external environment.

Front

What is a cladogram?

Back

A cladogram is a diagram that shows the evolutionary relationships among various biological species based on similarities and differences in their physical or genetic characteristics.

Front

What is the function of a protein channel in the cell membrane?

Back

A protein channel facilitates the transport of specific substances across the cell membrane.

Front

What is the role of the centromere during cell division?

Back

The centromere is the region of a chromosome where the two sister chromatids are joined and where the spindle fibers attach during cell division.