Astrobiology Quiz 1

Which represent the domains of life on Earth?

• Bacteria, Archaea, Eukarya

• Bacteria, Plantae, Animalia

• Bacteria, Archaea, Protista

• Archaea, Protista, Fungi

Cell theory states which of the following:

• Cells arise from non-living parts.

• The nucleus is the basic unit of life.

• All cells have a nucleus.

• All life is made of cells.

Which of the following molecules hold the information for building a living thing?

• DNA

• Microtubule Proteins

• Glucose

• Phospholipid

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NGSS.HS-LS1-1

NGSS.HS-LS3-1

Which statement best describes the function of the cell membrane?

• Keeps organelles in place.

• Controls what gets in and out.

• Reads messages to build proteins.

• Break down molecules to get energy.

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NGSS.MS-LS1-2

Nitrogen-fixing bacteria use inorganic nitrogen to make their energy. Which best describes their nutritional mode?

• Photo-autotroph

• Saprotroph

• Chemo-autotroph

• Heterotroph

A unicellular organism lacks a nucleus and is able to live in boiling water temperatures (>100^oC). Which group does it most likely belong to?

• Bacteria

• Protista

• Detritivore

• Archaea

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NGSS.MS-LS4-2

Proteins are folded chains of amino acids. Which statement is true?

• All proteins are found in the cell membrane.

• Changing a protein's amino acids will not affect its stucture.

• Protein structure (shape) determines its function.

• Proteins have the same order of amino acids but different structures (shapes).

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NGSS.HS-LS1-1

Which of the following is true regarding DNA?

• There are six nucleotides arranged in a triple helix

• Each nucleotide has two nitrogenous bases

• Strands of DNA are antiparallel

• Proteins code for DNA

Describe two functional types of proteins and their roles in living organisms. (5-6)

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NGSS.HS-LS1-1

Explain why a cell membrane must be bilayer (have two layers). (L7-8)