Answer Happy

Question 51 2 pts The DNA double helix is similar to a twisted ladder. What makes up the sides (backbones) holding the rungs together? O phosphate groups only alternating units of phosphate groups and sugars sugars only O purines and pyrimidines

D. Question 52 2 pts In eukaryotic cells, the creation of an mRNA transcript occurs in the cytoplasm O mitochondria ER nucleus O plasma membrane

Question 53 2 pts What kind of chemical bonds hold together the two strands of complementary nucleotides in a DNA molecule? ionic O covalent O sulfhydryl O peptide hydrogen

D. Question 54 2 pts The Central Dogma of Biology can be stated as O proteins RNA DNA. RNA DNA proteins DNA-→ proteins RNA. DNA RNA proteins.

U Question 55 2 pts In an experiment described in a biology lab book, the instructions state that five minutes after two chemicals (A and B) are mixed, chemical B will be oxidized and chemical A will be reduced. This means that O chemical B has lost electrons to chemical A chemical B has gained electrons from chemical A. chemical Bhas lost its ability to interact with chemical A. B O chemical B has shared electrons with chemical A

D Question 56 2 pts The genetic code uses nucleotide(s) to specify one amino acid. O one O two O three O four O 64 Bay

Question 57 2 pts DNA polymerase III synthesizes the leading strand as a continuous strand. The lagging strands are synthesized in segments, called O parental DNA Chargaff's segments O repeating primers O replisomes O Okazaki fragments

Question 58 2 pts Most eukaryotic genes contain coding sequences (that will be expressed during protein synthesis) called that are interspersed with noncoding sequences. O introns codons DNA exons O promoters

D Question 59 2 pts When crossing a heterozygote with a heterozygote, what are the chances of getting an offspring with the homozygous recessive genotype for that trait? 0% 25% 50% 100%

Question 60 2 pts Codons that serve as "stop" signals for translation are recognized by tRNA O release factors O anticodons translation terminators O aminoacyl-tRNA synthetases

2 pts D Question 61 The chemical bonds connecting the alternating sugar and phosphate groups in the backbone of a strand of DNA are O phosphodiester bonds. hydrogen bonds. hydrophobic bonds OC-C bonds. O peptide bonds.

2 pts Question 62 Not being soluble in water is a defining characteristic of which group of molecules? O Proteins Lipids O Carbohydrates Nucleic acids • Previous Next

D Question 63 2 pts The 3-nucleotide sequence of an mRNA transcript that specifies an amino acid is called a(n) O codon 0 anticodon amino acid O transcript O template

Question 64 2 pts To begin transcription, RNA polymerase must bind to a segment of DNA called the initiation site O primer O inducer promoter O transcription bubble nem