i just need quick help with these question Mathematics Assignment Help. i just need quick help with these question Mathematics Assignment Help.
i just need quick help with these question Mathematics Assignment Help[supanova_question]
examples of synaptic signaling Science Assignment Help
The cells that make up multicellular organisms send, receive, and respond to a variety of signals. Synaptic signaling is a form of cell-to-cell communication in which…
a cell produces a signal released into the bloodstream to be carried to specific distant organ.
adjacent cells pass molecules from one cell’s cytoplasm to another through cell junctions.
the same cell that produces a signal also responds to the signal.
a neuron produces a chemical that induces changes in local, nearby, neurons.
examples of direct signaling Science Assignment Help
Which of the following is an example of direct signaling?
During wound healing, platelet cells produce a growth factor that induces nearby cells to divide.
Junctions between adjacent plant cells connect their cytoplasms and allow them to share molecules.
Mutated cancer cells produce as well as respond to growth signals, resulting in tumor growth.
Pancreas cells produce and release insulin into the bloodstream to induce liver cells to uptake and use glucose.
Sodium potassium pump description Science Assignment Help
Select the descriptions that apply to the sodium-potassium pump. More than one answer
Sodium ions and potassium ions move into and out of the plasma membrane by osmosis.
The pump helps to maintain the concentration of sodium and potassium ions in living cells.
The pump is an active mechanism for transporting ions through the plasma membrane.
- The concentration gradient of the ions determines the direction of movement through the pump.
True about RNA editing process Science Assignment Help
After an mRNA strand has been transcribed from DNA, it must be processed before translation can take place. Which of the following statements are true about the RNA editing process? More than one answer
Additional amino acids are added before translation occurs.
A cap is added to one end of the mRNA molecule.
Editing occurs in the cytosol as the new mRNA strand leaves the nucleus.
- Noncoding segments are removed and exons are joined together.
A pair of dice is rolled, best answer Mathematics Assignment Help
pair of dice is rolled. The observation is the number that comes up on each
die. Find the probability of each of the
are rolled (A “pair” is a roll in which both dice come up the same number).
sum of the two dice is seven.
least one of the dice is a 1.
sum of the two dice is less than 5.
A pair of dice is rolled, best answer Mathematics Assignment Help[supanova_question]
A bomb calorimeter has a heat capacity of Science Assignment Help
determine DH° for the following thermochemical equation. Science Assignment Help
Pb(s) + PbO2(s) + 2H2SO4(l) –> 2PbSO4(s) + 2H2O(l); DH° = –509.2 kJSO3(g) + H2O(l) –> H2SO4(l); DH° = –130. kJ
determine DH° for the following thermochemical equation.
Pb(s) + PbO2(s) + 2SO3(g) –> 2PbSO4(s)
An honest coin is tossed three times Mathematics Assignment Help
1. An honest coin is tossed three times in a row. Find the probability of each of the following events. (Hint: Write out the sample space of tossing a coin three times first!)
A. The tosses result in exactly two heads.
B. The tosses result in more than two heads.
C. All three tosses come up the same.
D. The first two tosses come up tails.
A card is drawn at random Mathematics Assignment Help
A card is drawn at random out of a well-shuffled deck of 52
cards. Find the probability of the following events.
A. Draw an Ace.
B. Draw a red card
C. Draw a face card (A
“face” card is a jack, queen or king)
D. Draw a two or a club
(Hint: Write out the sample space)