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An experimenter extracts and purifies act in filaments from ananimal cell. Using an appropriate visualization technique, herealizes that some actin filaments are very stable, somedepolymerize rapidly, and some depolymerize slowly. What could be aplausible reason for explaining the slow depolymerization of someof the filaments?a) The filaments are capped at both ends.b) The filaments are capped at the (+) end.c) The filaments are capped at the (-) end.d) The filaments are treadmilling.
Explain, in general terms, the role of RNA in gene expression. Why is RNA useful to a cell? What is the benefit of using RNA instead of just directly producing protein from the instructions in DNA?
What issues need to be considered when planning an information systems project to increase data security?
Suppose that lions running on grass neither benefit nor are harmed by this interaction, but their activity helps the grass grow.
Briefly describe each of the possible mutations that might be the cause of the abnormal dynein of Kartageners'syndrome. Please provide a detailed, complete answer and if reference materials are utilized in your explanation, please site the source.
Why can there be dissimilarity between heart rate averaged over 15 seconds and instantaneous heart rates. Suppose that green turtle grass ingestion time for the sea urchins has an approximate normal distribution.
Most cellular activities involve converting energy form one form to another. For each of the following cases, give a biological example and explain the significance of the conversion.
Which compartments of a cell is associated with each of the following: clathrin, calcium ions in a skeletal muscle cell, dolichol phosphate, ribonuclease and lipase, digitalis, LDL receptors, COPI proteins, COPII proteins, unbound SRPs.
how efficient is fermentaion? how efficient is cellular respiration ? Eggiciency is calculated as the amount of useful energy (as ATP) gained during the process divided by the total amount of energy available in glucose. Use 686 kcal as the total ..
Epistasis occurs when the the alleles of one gene mask the phenotypic effects of the alleles of another gene at a different locus.
q1. single-stranded dna molecules are said to be anti parallel while they are aligned next to each other but oriented
A surgical procedure formerly used to alleviate severe intractable pain in cancer patients is called an anterolateral cordotomy. When performed properly, this procedure cuts the axons contained in the lateral spinothalamic tract.
What evidence supports the sliding filament model of contraction? Refer to Week 1 and decide how a hypothesis and a model are related.
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