___ has a double helix secondary structure: a) mRNA b) tRNA c) rRNA d) DNA e) al
ID: 163361 • Letter: #
Question
___ has a double helix secondary structure: a) mRNA b) tRNA c) rRNA d) DNA e) all of these RNA polymerase is a molecule that consists of: a) RNA B) protein C) DNA D) chromatin E) phospholipid Which of Mendel's principles will NOT be observed in the ease at tightly linked genes? a) particulate inheritance b) segregation c) independent assortment d) all are always observed Which type of bond does RNA Polymerase catalyze a) hydrogen b) disulfide c) phosphodiester d) peptide e) ionic Promoter-proximal elements and enhancers are examples of: a) regulatory sequences b) coding sequences c) "junk" DNA d) proteins Sigma is a molecule that consists of: A) RNA B) protein C) DNA D) chromatin E) phospholipid Methylation and Acetylation are processes that allow long-term regulation of: a) DNA synthesis b) Transcription c) RNA Processing d) Translation Which gene is transcribed frequently in liver cells, but not in bone cells: a) insulin b) insulin receptor c) RNA Polymerase d) phosphofructokinase Bacterial promoter sequences are: a) very variable b) very uniform c) made of polysaccharides d) complex proteins Why do researchers frequently begin a search for mutants by exposing organisms to UV light or x-rays? A. The treatment triggers gene expression B. The treatment stimulates cell growth C. The treatment increases the mutation rate by damaging DNA D. The treatment causes mutants to turn yellow. The traits that Mendel studied in garden peas showed___phenotypic variation A) discrete B) continuous C) very low D) zero Different cells express different sets of proteins because they contain different a) genes b) transcription factors c) lipids d) RNA Polymerase molecules The wobble hypothesis explains why there are ___ distinct tRNAs, compared to codons. a) more b) fewer c) exactly the same number of The proportion of parental vs, recombinant gametic types ___ as linkage distance increases. a) increases b) decreases c) remains constant ___ occurs when a heterozygote's phenotype is intermediate between those of the homogygotes a) b) Incomplete dominance c) Multiple allelism d) PolymorphismExplanation / Answer
1. Answer-D
Description-DNA has double helix secondary structure-Secondary structure is the interactions between bases, which parts of strands are bound to each other. In DNA double helix, the two strands of DNA are held together by hydrogen bonds. The nucleotides on one strand base pairs with the nucleotide on the other strand.
2. Answer-B
Description-RNA polymerase-is a molecule that consists of protein.
It is a complex molecule composed of protein subunits.
3. Answer-B
Segregation-Mendel's law of segregation, states that allele pairs separate or segregate during gamete formation, and randomly unite at fertilization.
4. Answer-C
Phosphodiester-
The RNA polymerase catalyzes the linkage by phosphodiester bonding of the two initial ribonuleotides.
5. Answer-A
Regulatory Sequences
Three types of promoter sequences have been identified in eukaryotic DNA. Promoter-proximal elements are located close to the start site while enhancers lie more distant. Promoters determine the site of transcription initiation and direct binding of RNA polymerase II.
6. Answer-B
Sigma is a molecule consists of Protein,Is a protein needed only for initiation of RNA synthesis
7. Answer-B
Transcription
8. Answer-A
Insulin
The insulin-producing cells of the pancreas contain transcripts for insulin, but bone cells do not.
9. Answer-A
Very Variable
Bacteria are ubiquitous, extremely numerous with highly variable sequence
10. Answer-C
Treatment Increase mutation rate by damaging DNA.
11. Answer-A
discrete
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.