As discussed in the chapter opener, select all of the characteristics common to individuals with down syndrome.
a. taller than normal
b. mild to moderate intellectual disability
c. upwardly slanted eyes
d. extreme mental dysfunction
e. low muscle tone
f. increased risk of cardiac defect
Answer:
b. mild to moderate intellectual disability
c. upwardly slanted eyes
e. low muscle tone
f. increased risk of cardiac defect
You might also like to view...
The movement of oxygen through the aquatic plant may depend on
A. osmotic absorption by the roots. B. aquaporins. C. negative pressures created by transpiration. D. differences in the water potential of different tissues. E. aerenchyma tissue.
Muscle that is striated and voluntary is ____
a. skeletal only b. smooth only c. cardiac only d. both skeletal and cardiac e. both cardiac and smooth
The function of a protein is dependent upon the shape into which the chain of amino acids folds. Many noncovalent interactions are responsible for maintaining the protein's shape. Assume you have isolated a protein from an organism in its proper shape, and you have treated it with an enzyme that selectively targets and breaks only the peptide bonds in the proteins. Would the protein retain its shape under these conditions?
a. Yes; because the noncovalent interactions that determine the shape of a protein are stronger than the peptide bonds. b. No; while the noncovalent bonds determine the shape of a protein, the peptide bonds are required to hold the amino acids together. c. Yes; but the shape would be affected to a greater extent by changes in temperature. d. Yes; once noncovalent bonding determines the shape of a protein, the peptide bonds are no longer necessary.
A tabacco plant can be made to express a gene from fireflies, resulting in the emission of light. Which of the following is the basis for this phenomenon?
A. Chloroplasts can be made to produce light if firefly proteins are injected into plant cells B. Fireflies and tobacco plants share a recent common ancestor C. Fireflies and tabacco plants are infected by the same kinds of bacteria D. Transcription and translation are fundamentally similar in both fireflies and tobacco plants E. Most enzymes in fireflies have the same amino acid sequence as the enzymes in tabacco plants