Irvine Valley College BIO 1 Diploid cells (Development, tissues and Protein Synthesis) 1)How many nucleotides long is a codon? 20 2 3 4   Which of the following events occurs outside the nucleus? RNA polymerase replication Intron removal Transfer RNA function Maturing of the mRNA Which of the following is the correct mRNA sequence for the following DNA sequence?: A T T C G C G A T A T T C G C G A T   T A A G C G C T A A U U C G C G A U U A A G C G C U A How many total amino acids can the nucleotide sequence in Question 3 code for? 3 4 9 20 Which primary germ layer forms last? Mesoderm Ectoderm Endoderm They all form at the same time (you’re not going to trick me!) Which primary germ layer develops into the brain? Mesoderm Ectoderm Endoderm Brainoderm The center of the blastula is called the blastopore blastocore blastocoel Archenteron The zygote is an unfertilized egg cell True False Which of the following occurs immediately after the formation of the blastula? Gastrulation Primary cleavage The morula The cortical reaction Which of the following statements is not true? The acrosomal reaction follows the cortical reaction Gastrulation results in the formation of germ layers Early development is limited to mitosis as form of cell division The blastopore is the opening of the archenteron Which tissue type is contractile? Epithelial Muscle Connective Nervous Which tissue type involves the process of ossification? Epithelial Muscle Connective Nervous