The uptake of carbon dioxide and the release of oxygen is essential for a plant to survive. where and how does this gas exchange generally occur? a. in all plant organs, as a result of cellular respiration b. in the stems, to provide energy for lifting water c. in the roots, to allow mineral absorption d. in the leaves, as a result of photosynthesis

14. which of the following codons code for threonine? a. ucg b. ugu c. cga d. aca

Amines amides and amino acids are categories of

Use the above pedigree for questions 1,2, and 3 1. what kind of genetic disorder is represented in the pedigree? a. recessive b. dominate refer to the pedigree in question 1. 2. is the mutated gene in this disorder located on a sex chromosome (x or y) or an autosome? a. sex chromosome b. autosome refer to the pedigree in question 1. 3. which generation has individuals that you are certain are heterozygous for the mutated gene? a. generation 1 b. generation 2 c. generation 3