In September 2020
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Hexokinase is an important enzyme in the metabolism of glucose. If the concentration of hexokinase in our eukaryotic cell is 20 um, how many glucose molecules are present per hexokinase molecule?
A. 1°
B. 2°
C. 3°
D. 4°
those in stained preparations?
The human body has many organ systems which help it function. Which of these correctly lists a system that has been organized from LEAST to MOST complex organization?
- Integumetary system --> skin cell --> hair --> sweat glands
- Lung tissue --> trachea --> nose --> circulatory system
- Muscle cell --> muscle tissue --> biceps muscle --> muscular system
- Heart --> cardiac muscle --> muscle tissue --> muscle cell
Most cells in our body need to use glucose to produce energy by cellular metabolism. This means that there would be more glucose outside of a cell than inside the cell, encouraging the diffusion of glucose into the cell.
to diffuse in to the cell, can the glucose molecules move by simple diffusion (through gaps of phospholipids)? explain your choice
In fruit flies, short wing is dominant to long wing. What are the genotypes and phenotypes of offsprings between two heterozygous short winged flies?
Describe the actions of our immune response. what is an antigen? what does it do?
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