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1. Self-cleaving RNAs that functioncatalytically are calledA. snRNPsB ribosomes.C. snRNAs.D. SplicesomesE. Ribosomes2. Molecules of tRNA areA. 75 to90 nucleotides inlengthB. Single-stranded with secondarystructureC. Cloverleaf in shapeD. Synthesized with modifiedbases.E. All of the above3. Which parts of a eukaryotic gene aretranscribed?A. Exons, introns, promoter, andterminator sequenceB. Only exonsC. Both exons and intronsD. Only the intronsE. It depends on thegene
Terry catches a ray-finned fish from the ocean and notices that, attached to its flank, there is an equally long, snakelike organism. The attached organism has no external segmentation, no scales, a round mouth surrounded by a sucker and two small..
FSH and LH get their names from events of the female reproductive cycle, but they also function in males. Compare and contrast their functions in males and females.
What is the rate of errors in DNA replication in a cell that has a defect in the DNA polymerase III 3'-5' exonuclease activity (but all other mechanisms that ensure DNA replication fidelity intact?
Describe two pairs of antagonistic hormones.Include where they are produce, their target organs and their effects.
Explain three ways that the knowledge of metabolic processes photosynthesis and cellular respiration can improve your level of physical fitness.
A semipermeable membrane separates two aqueous solutions at thirty degrees C. For each of the following cases, name the solution into which a net flow of water.
What determines how often a phenotype occurs in a population?
In the absence of specific carrier proteins, which of the following can diffuse readily across the plasma membrane of a cell? ATP, glucose, amino acids, fatty acids, gases, proteins, polysaccharides, glycerol, hemoglobin, ethanol.
In Staphylococcus epidermidis, bacillus subtilis and escherichia coli, which one has gram- positive, which one has gram-negative? Also, which organism is the biggest? Which one is the least.
The expression and purification of rGFP started with the increase of the bacterial culture and ended with elution of rGFP off the Ni+2 agarose coloumn.
Which statement is most accurate concerning how photosystem II (PS II) compares to the electron transport chain (ETC) of mitochondria? A) In both systems, ATP is produced by chemiosmosis.
Explain how the metabolic processes of cellular respiration and photosynthesis recycle oxygen. Trace a molecule of O2 from the environment to a musclecell in a vertebrate of your choice.
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