Practice Biology EOC

Front

What is the process of transcription in gene expression?

Back

Transcription is the process where the DNA sequence of a gene is copied into mRNA. This occurs in the nucleus and is the first step in gene expression.

Front

What are homologous structures?

Back

Homologous structures are anatomical features in different species that share a common ancestry, even if they have different functions. Example: the forelimbs of humans and bats.

Tags

NGSS.HS-LS4-1

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a process that allows substances to cross membranes with the assistance of special proteins, moving from high to low concentration without energy.

Front

What is a dihybrid cross?

Back

A dihybrid cross is a genetic cross that examines the inheritance of two different traits, typically involving parents that are heterozygous for both traits.

Front

What are vestigial structures?

Back

Vestigial structures are remnants of organs or structures that had a function in an early ancestor but are no longer functional in the current organism. Example: human appendix.

Tags

NGSS.MS-LS4-2

Front

What is the role of mRNA in protein synthesis?

Back

mRNA (messenger RNA) carries the genetic information from DNA to the ribosome, where it serves as a template for protein synthesis during translation.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in the concentration of a substance across a space. Substances tend to move from areas of high concentration to areas of low concentration.

Tags

NGSS.HS-PS1-5

Front

What is the difference between transcription and translation?

Back

Transcription is the process of copying DNA into mRNA, while translation is the process of decoding mRNA to synthesize proteins.

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy (ATP).

Tags

NGSS.HS-LS2-3