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Chapter 12 Name Date Class 9 New inheritable characteristics would least likely result from . A mutations that occur in muscle and skin cells B mutations that occur in male gametes C mutations that occur in female gametes D sorting and recombination of existing genes during meiosis and fertilization bn In the illustration below, which molecules are represented by boxes A and B Give answer in order of A, then B. Hereditary Information is stored in bk What is the complimentary mRNA sequence to the DNA sequence A-T-T-G-C-A A T-A-A-C-G-T B U-A-A-C-G-T C U-A-A-C-G-U D T-A-A-G-C-U can Genes are made of A controls production of bl What is the role of the structure shown here during protein synthesis AA Replicate A A-chromosomes, B-proteins B A-DNA, B-proteins C A-RNA, B-chromosomes D A-chromosomes, B-proteins B U A C A mRNA delivers codons from DNA in the nucleus B mRNA attaches to the ribosome C rRNA forms ribosomes D tRNA transports amino acids from the cytoplasm to the ribosome for translation bm In most organisms, the start of translation is signaled by an AUG codon. What is the first amino acid in most proteins A proline B leucine C isoleucine D methionine bo Why is the presence of DNA important for the cellular metabolic activities A DNA directs the production of enzymes. B DNA is a structural component of the cell membranes. C DNA directly increases the solubility of nutrients. D DNA is the major component of cytoplasm. bp Why can the deletion of a single nitrogen base in DNA due to a mutation be harmful to an organism A Deletion causes chromosomes to join the wrong chromosome. B Nearly every amino acid in the protein will change after the deletion of a base. C Deletion causes a gamete to have an extra chromosome. D Such a mutation causes one chromosome to break off or become fragile. Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. 24 CHAPTER 12 STANDARDIZED TEST PRACTICE
Chapter 13 Name Date Class 1 In order to determine the genotype of a particular trait of an organism, researchers can perform a test cross between the unknown organism and an organism that is known to be . A homozygous dominant for the trait B heterozygous for the trait C homozygous recessive for the trait D a clone 2 How can foreign pieces of DNA be transferred into organisms A by restriction enzymes B by vectors C by carrier enzymes D by test crosses 3 The model below represents the outcome from a step used in the recombinant DNA process. What is the step called 5 Which process is a common practice that has been used by farmers for hundreds of years to develop new varieties of plants and animals A cloning B genetic engineering C cutting DNA and removing segments D selective breeding for desirable traits 6 The diagram below shows some key steps of a biotechnological procedure. What development does the letter X most likely represent Gene for human insulin + Cut bacterial DNA Enzymes Inserted into bacterial cell Cell division A human cells able to resist antibiotics B human cells unable to synthesize antibodies C bacterial cells able to synthesize human insulin D bacterial cells unable to synthesize human insulin X Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. A DNA sequencing B gel electrophoresis C cloning genes D splicing genes 4 Researchers inserted a gene for bioluminescence into a variety of organisms, such as mosquito larvae. What is this technology called A gel electrophoresis B polymerase chain reactions C DNA sequencing D genetic engineering 7 The nucleus is removed from a body cell of one organism and is placed in an egg cell that has had its nucleus removed. This process results in the production of organisms that are genetically alike. What is this process called A fertilization B adaptation C cloning D inbreeding 8 Restriction enzymes are used for what purpose A to maintain homeostasis B to transfer DNA fragments to plasmids C to cleave DNA strands at specific nucleotide sequences D to inhibit enzyme reactions in cells STANDARDIZED TEST PRACTICE CHAPTER 13 25
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glencoe.com ISBN: 978-0-07-879935-8
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