Biology Quiz

Which statement best describes the relationship between proteins, DNA, and cells?

• Proteins combine to produces cells, which produce DNA

• Proteins are made up of DNA, which determines the cells that are produced.

• Cells contain DNA, which controls the production of proteins.

What does it mean when we say that the two strands nucleotides in DNA are complementary?

• The two strands look best together

• The two strands fit like a jigsaw puzzle

• Each nucleotide has an attraction to another like the north and south sides of magnets

What is the main purpose of mRNA?

• Transporting amino acids

• Copying genetic information before mitosis

• Transferring DNA instructions outside the nucleus for protein synthesis

Which best summarizes the END results of MEIOSIS?

• Identical haploid cells

• Unique/different haploid cells

What is the Central Dogma of Biology and what does it mean?

• Protein > DNA > RNA is the order because RNA contains the genes

• RNA > DNA > Protein because RNA copies genes from DNA to make proteins

• DNA > RNA > Protein because RNA copies instructions for making proteins from DNA

• DNA > Protein > RNA because the molecule are alphabetically arranged

What is the shape or structure of DNA?

• Straight double stranded ladder

• Double Helix

• Single twisted strand

• Single straight strand

Adenosine, Thymine, Guanine, and Cytosine are all what?

• Types of nitrogen acids

• Types of phosphate bases

• Types of nitrogen bases

• Amino Acids

DNA is able to control cellular activities most directly by regulating the process of:

• Cell division

• Making Proteins

• Active Transport

• Selective breeding

Which best describes the structure of DNA?

• A single strand of nucleic acids

• A single strand of proteins

• A double strand of nucleic acids

Why must the bonds between nitrogen bases in DNA be weak?

• So the molecule can be unzipped down the center exposing the bases for mRNA

• If they too strong, the molecule could be ripped apart

• To expose the phosphate and sugar for replication

• They are not weak