REVIEW

Which of the following best describes a carbohydrate?

• Carbohydrates always consist of a five-carbon sugar, a nitrogenous base, and one or more phosphate groups and are used to store genetic information.

• Carbohydrates are organic macromolecules that are insoluble in water and have the ability to store energy for extended periods of time. They are oily

• Carbohydrates are composed of amino acid monomers and are involved in cell signaling, cell transport, immune responses, and the cell cycle.

• Carbohydrates are organic macromolecules that are made up of carbon, hydrogen, and oxygen atoms and are used for energy storage or as structural molecules.

Nucleic acids, proteins, and other large biological molecules are known as polymers because

• they are the base units used in the formation of plastics.

• they all have the capability of functioning as enzymes.

• they contain many small, repeating subunits bonded together.

• they all contain only ionic bonds.

Chromosomes determine all inherited traits because they are made up of _____________.

• ATP

• DNA

• CENTROMERE

• PHOSPHOLIPIDS

A specific cell is unable to make the enzyme helicase. Because of the deficiency, what would the cell most directly be unable to accomplish? Choose the correct answer

• The cell would not be able to add new nucleotides

• The cell would not be able to unzip the double helix

• The cell would not be able to fix mistakes in the DNA

• The cell would not be able to add the primer to the DNA strand

The four types of nucleotides that make up DNA are named for their ___________. Choose the correct answer

• SUGAR

• PHOSPHATE

• NITROGEN BASES

• HYDROGEN BONDS

Combining the work of other scientists with their own research, Watson and Crick discovered that two strands of DNA join together to form a(n) ____________. Choose the correct answer

• NUCLEOTIDE

• X IN A CIRCLE

• DOUBLE HELIX

• COVALENT BOND

How are mitosis and cytokinesis different? Choose the correct answer

• Cytokinesis occurs in plant cells, while mitosis occurs in animal cells

• Cytokinesis occurs in animal cells, while mitosis occurs implant cells

• Cytokinesis is the division of the cytoplasm, while mitosis is the divisions of the nucleus

• Cytokinesis is the division of the nucleus, while mitosis is the division of the cytoplasm

During which phase of mitosis are the chromatids separated? Choose the correct answer.

• Metaphase

• Anaphase

• Telophase

• Prophase

Multicellular organisms use mitosis for growth, development, and ___________. Choose the correct answer

• Repair

• Apoptosis

• interphase

• reproduction

Which of these is true for prokaryotic cell and eukaryotic cell?

• Prokaryotic cells are larger than eukaryotic

• Eukaryotic cells are simpler than prokaryotes

• Prokaryotic cells lack membrane bound organelles and nucleus, and Eukaryotes contain membrane bound organelles and nucleus

• Eukaryotic cells do not have nucleus