Answer:
C4 plants—including maize, sugarcane, and sorghum—avoid photorespiration by using another enzyme called PEP during the first step of carbon fixation. ... PEP fixes carbon dioxide into a four-carbon molecule, called malate, that is transported to the deeper bundle sheath cells that contain Rubisco.
Explanation:
Answer:
The answer is B and D.
Explanation:
PKA ( Protein Kinase A) is an enzyme which becomes active with the presence of cAMP molecules in the cell and the cAMP molecules need to bind to R subunits to become active which happens at a ratio of 1:2.
The example given in the question states that the Ro sububit can bind to 8 molecules of cAMP rather than the conventional 2.
This means that the activation of the Ro subunits is harder than the activation of R subunit because of the requirement of higher cAMP concentrations.
B is correct, full activity of PKA with Ro subunits needs a higher concentration of cAMP.
Because Ro binds to eight units of cAMP, the dynamic range of activity of PKA with Ro is going to be over a wider range of cAMP concentration.
I hope this answer helps.
Answer: False.
Explanation:
Energy heats up molecules, making them move faster.
Terminal velocity is described as a velocity attained when an object which falls freely experiences 0 net force owing to gravitational force which is balanced by the resistance of the air. Hence, there is no acceleration thus, the velocity is constant. In order to attain terminal velocity by the skydiver, the weight of the skydiver must be equal to the resistance of the air hence we have the equation below;
50 kg*9.8 m/s²= 490 Newton.
Summarily, the force or magnitude of the air resistance is 490 Newton
