FREE AND STUDY GAMES ABOUT BIOLOGY 4-24 EXAM

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FREE AND STUDY GAMES ABOUT BIOLOGY 4-24 EXAM

QUESTIONS

Qs and Ans Expert- Explanation

This Exam contains:

-Guarantee passing score -38 Questions and Answers -format set of multiple-choice -Expert- Explanation

Question 1: What is an exception to the central dogma of molecular biology

Answer:

Viruses sometimes transfer information to RNA to DNA Question 2: The coding that signals the end of a growing polypeptide is called an ?

Answer:

Stop codon

Question 3: In

• Cool the lac operon controls the

Answer:

Breakdown of lactose Question 4: One difference between a gene mutation and a chromosomal mutation is that

Answer:

A chromosomal mutation can change the number of chromosomes in a cell

Question 5: What is produced during transcription

Answer:

RNA molecule

Question 6: In RNA ? Is the sugar in the nucleotide

Answer:

Ribose

Question 7: What are three main parts of an RNA nucleotide

Answer:

Ribosome molecule Phosphate group Nitrogenous vase

Question 8: What are some characteristics of polypoidy plants

Answer:

They tend to be bigger and stronger than diploid plants

Question 9: Which of the following is true

Answer:

RNA is usually single stranded

Question 10: I’m figure 13-6 A,B and C are three types of

Answer:

RNA

Question 11: Unlike DNA, RNA contains

Answer:

Uracil Question 12: The element bromine can cause a genetic change , so bromine is called a ?

Answer:

Enhancer

Question 13: Gene contains instructions for assembling

Answer:

Proteins

Question 14: When a chromosome undergoes a deletion mutation information is

Answer:

Lost Question 15: Which type of RNA brings the information in the genetic code from the nucleus to their parts of the cell

Answer:

mRNA Question 16: The tRNA bases called the ? Are complementary to three executive nucleotides on an mRNA molecule

Answer:

Anti codon Question 17: The order of nitrogenous bases in DNA determines the order of ? In proteins

Answer:

Amino acid Question 18: Which of the following best describes that what happens during gene expression

Answer:

A cell reads the instructions in DNA and builds a protein based on those instructions Question 19: During transcription, ? bonds to DNA and assembles nucleotides into a strand that is complementary

Answer:

RNA polymerase

Question 20: During eukaryotic transcription and rna molecule is formed that is

Answer:

Complementary to part of one strand of DNA

Question 21: Mutant 1 in figure 13-7 is the result of a(n) ? Because part of the chromosomes reversed direction

Answer:

Inversion

Question 22: What regulates the expression of most eukaryotic genes

Answer:

Transcription factors

Question 23: In eukaryotes ?

Answer:

Transcription takes place in the nucleus and translation takes place in the cytoplasm Question 24: Insertions and deletions that change the entire genetic message that comes after the mutation are called

Answer:

Frameshift mutation

Question 25: From which molecules are mRNA molecules transcribed

Answer:

DNA

Question 26: What is molecule B in figure 13-6 and what is it’s function

Answer:

Molecule B is tRNA which. Carries amino acids to the ribosomes Question 27: According to figure 13-2 what coding specify the amino acid glycine

Answer:

Cgu Cgc gga ggg Question 28: A eukaryotic gene consists of regulatory regions an ? and the nucleotide sequence is transcribed

Answer:

Promoter