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1. Which functions in lipid-processing and phospholipid manufacture?A) NucleusB) Rough ERC) Smooth ER
2.Given the function of chloroplasts, which of the following best describes a cell in the root of a particular plant?A) The cells would contain very few or no chloroplastsB) The cell would contain about the same number of chloroplasts as a leaf cell
The cell walls of bacteria, fungi, and plant cells and the extracellular matrix of animal cells are all external to the plasma membrane. Which of the following is a characteristic of all of these extracellular structures.
Think about an artificial animal cell which contains 0.3 mmol/L NaCl (MW: 58.5 g/mol) and 0.01 mmol/L glucose (MW: 180 g/mol) in the cytoplasm.
In relation to the oxygen atom forming the linkage between glucose molecules, how are the hydrogens attached to the same carbon as the linkage oxygen oriented?
Which of the following is NOT a factor that affects gas exchange?
You have determined the DNA- binding site of a protein by determining the DNA footprinting after labeling one strand. To check your results, you repeat the experiment after labeling the other strand of the duplex.
The antibiotic Gramicidin A can transport Na+ ions into a certain cell at the rate of 5.0 x 10^7 Na+ ions channel^-1 s^-1. Calculate the time in seconds to transport enough Na+ ions to increase its concentration.
what is the structure of a typical animal cell and explain the plasma membrane.
Describe how the water vascular system functions. What is the benefit of this adaptation for these animals?
Describe the process of muscle contraction. Includea description of the sarcomere structure and what happens to itduring muscle contraction and relaxation. Also describe howthe process is regulated, including the roles of ATP andCa2+. Be sure to i..
A strain of E. coli contains a mutant tRNALeu. Instead of recognizing the codon 5' CUG 3', as it does in nonmutant cells, the mutant tRNA recognizes the codon 5'GUG3'. A missense mutation of another gene, bug, affecting amino acid number 28 of the..
In examining a picture of the cell taken with an electron microscope, a student observes that the cell has a nucleus and a cell membrane but not a cell wall. The student can accurately conclude that the cell is a what.
Why do plant cells have mitochondria, but animal cells don't have chloroplasts? Give a phylogenic explanation.
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