Biology STAAR Review #2

Front

WHICH BIOMOLECULE STORES LONG-TERM ENERGY?

Back

LIPIDS are the biomolecules that store long-term energy in organisms.

Front

WHAT ELEMENT DO AMINO ACIDS AND NUCLEOTIDES HAVE THAT THE OTHERS DO NOT HAVE?

Back

NITROGEN is the element that is present in amino acids and nucleotides but not in carbohydrates or lipids.

Front

At high temperatures enzyme activity declines because of:

Back

Denaturation is the process where enzymes lose their functional shape due to high temperatures.

Front

Movement of particles from high to low concentration is called:

Back

Passive Transport is the movement of particles across a membrane without the use of energy.

Front

How would the DNA sequence GCTATA be transcribed to mRNA?

Back

The DNA sequence GCTATA is transcribed to mRNA as CGAUAU.

Front

What are the building blocks of proteins?

Back

Amino acids are the building blocks of proteins.

Front

What is the primary function of carbohydrates?

Back

The primary function of carbohydrates is to provide energy to the body.

Front

What is the role of enzymes in biological reactions?

Back

Enzymes act as catalysts to speed up chemical reactions in the body.

Front

What is the structure of DNA?

Back

DNA is a double helix made up of nucleotides, which include a sugar, phosphate group, and nitrogenous base.

Front

What is the difference between active and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not.