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sammy [17]
3 years ago
13

1. What are cell cycle regulators?

Biology
1 answer:
Goshia [24]3 years ago
8 0

Explanation:

Cell Cycle Regulators. The cell cycle controls replication and apoptosis, prevents uncontrolled cell division (tumor formation), and may involve detection and repair of damage to DNA. ... Sigma offers a host of cell cycle regulators such as antimitotics, mitotic inhibitors, and cytokinesis inhibitors.

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The light- ____ reactions occur in thylapidary membranes?
Papessa [141]
I think it's light dependent and the light independent take place outside the thylakoid membranes. 
6 0
3 years ago
8-2 Telling Them Apart. From the following list of properties, indicate which one(s) can be used to distinguish between each of
Oksanka [162]
<h2>Transportation across the membrane</h2>

Explanation:

(a) Simple diffusion; Faciliated diffusion-Directions in which two transported solutes move

  • In simple diffusion diffusion of non polar compounds across the membrane and along the concentration gradient without the involvement of protein whereas in case of facilitated diffusion membrane transport proteins that facilitate movement pf molecules across the membrane down its concentration gradient
  • Both the diffusions does not require energy

(b) Facilitated diffusion; active transport-Direction the solute moves relative to its concentration gradient

  • In facilitated diffusion membrane transport proteins that facilitate movement of molecules across the membrane down its concentration gradient without the expenditure of energy
  • Active transport drives transportation of solute against the concentration gradient across the membrane

(c) Simple diffusion; Active transport-Directions in which two transported solutes move and Direction the solute moves relative to its concentration gradient

  • In simple diffusion diffusion of non polar compouds across the membrane and along the concentration gradient without the involvement of protein and energy
  • Active transport drives transportation of solute against the concentration gradient across the membrane;secondary active transporters coupled with transportation of two solute molecules

(d) Direct active transport; Indirect active transport-Direction the solute moves relative to its concentration gradient or its electrochemical potential

  • Direct active transport use direct energy such as ATP hydrolysis,oxidation and sunlight energy
  • Indirect active transport use indirect energy such as chemical gradient,electrochemical gradient established by direct active transporters;one solute moves along the concentration gradient while other moves against the concentration gradient

(e) Symport; Antiport-Direction in which two transported solutes move

  • In symport both the solute molecules move in same direction;coupled with primary active transport(direct transport)
  • In antiport both the solutes moves in opposite direction;coupled with secondary active transport(indirect transport)

(f) Uniport; coupled transport-Directions in which two transported solutes move

  • Uniport is the transport of single solute across the membrane
  • Coupled transport is the transport of two solute molecules across the membrane;it may be symport or antiport

(g) P-type ATPase; V-type ATPase-Kinetics of solute transport

  • P-type ATPase always transport cations and undergoes phosphorylation
  • V-type ATPase(here V stands for vacuole) transport protons and no phosphorylation occurs;catalytic activity is not reversible
  • Both are types of primary active transporters
6 0
3 years ago
Which function of prokaryotes is described by binary fission
Virty [35]

Binary fission refers to the type of asexual reproduction. It is the most general kind of reproduction in prokaryotes like bacteria. It takes place in some unicellular cells like Paramecium and Amoeba.

7 0
3 years ago
When blood glucose levels are difficult to control in type 2 diabetes some form of insulin may be added to the treatment regimen
ohaa [14]

The answer is number 3 use this to help you : https://quizlet.com/118565169/nsg-6005-week-8-flash-cards/

8 0
4 years ago
As part of a blood drive on campus for the American Red Cross, you and your friends have just donated 500 ml of blood. You are n
Lunna [17]

D) no change in cardiac output, increased heart rate, decreased stroke volume occurs after blood donation

Explanation:

When a person donates blood, there is a slight loss of blood volume or hypovolemia. This triggers the baroreceptors of the blood; although does not trigger the osmoreceptor.

The baroreceptor responses are according to the arterial pressure which rises momentarily and results in increased sympathetic activity with decreased vagal activity.

These changes will lead to vasoconstriction, reduced stroke volume, increased heart rate or tachycardia which helps to maintain the cardiac output.

The soreness at the venepuncture site on the skin is due to bruising which is common after any needleprick. applying cold pack, elevating and resting the arm.

In order to compensate for the fluid volume loss and avoid dehydration, one must take plenty of fluids before and after blood donation.

8 0
3 years ago
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