Biology U1 Interim

Adipose tissue is present beneath the skin's surface and serves to cushion and insulate the body. Which important organic molecule is most likely present in this tissue?

• cellulose

• lipids

• proteins

• starch

What controls and directs the production of proteins in living things?

• amino acids

• carbohydrates

• lipids

• nucleic acids

Why are carbohydrates important for organisms?

• They store and transmit hereditary information.

• They are structural components and the primary source of energy.

• They store energy and are components of waterproof coverings.

• They regulate cell processes and are structural components.

Which statement describes the structure of protein?

• composed of chains of monosaccharides

• composed of long chains of amino acids

• composed of single or double strands of nucleotides

• composed of a glycerol molecule bonded to fatty acid molecules

Use the Venn diagram to compare and contrast two macromolecules. What are the titles for the letters Y and Z?

• Y: Carbohydrates; Z: Proteins

• Y: Lipids; Z: Carbohydrates

• Y: Nucleic Acids; Z: Lipids

• Y: Proteins; Z: Carbohydrates

The table identifies the four major groups of organic compounds. Which section of the table would be described correctly with the phrase “contains nitrogenous bases”?

• W

• X

• Y

• Z

A scientist discovered a new organism in a rainforest. She is studying the DNA of the organism to find its similarity to other organisms. What nucleotides will be present in the DNA sequence of the newly discovered organism?

• A, T, G, C

• A, U, G, C

• G, C, U, T

• G, U, A, T

Which statement is true of every living organism?

• DNA is found in 46 chromosomes.

• DNA is protected inside a nucleus.

• DNA is made of four types of nucleotides.

• DNA is found in 23 homologous chromosome pairs.

Scientists are working to design the genetic code of an organism they intend to create in a lab. Which nucleotides can they use to sequence the DNA of the organism?

• A, G, T, U

• A, C, G, U

• A, C, G, T

• A, C, T, U