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lapo4ka [179]
2 years ago
14

Describe the structures and functions of the digestive system

Biology
1 answer:
REY [17]2 years ago
7 0
The function of the digestive system is digestion and absorption. Digestion is the breakdown of food into small molecules, which are then absorbed into the body. The digestive system is divided into two major parts: The digestive tract (alimentary canal) is a continuous tube with two openings: the mouth and the anus.
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The plasma membrane represents an energetic barrier to the free diffusion of ions from the extracellular space into the cytoplas
Marysya12 [62]

Answer:

Why are molecules such as valinomycin effective at transporting ions across the membrane?

Valinomycin is effective as transporting ions across the membrane because it is no charged, so it can carry ions.

Why would a drop in temperature to or below the transition temperature limit valinomycin mediated K+ transport across the plasma membrane?

Valinomycin is limited by temperature because its activity is highly sensitive and it depends on a stable and an average temperature.

Explanation:

Valinomycin is effective at transporting ion across the membrane because is an antibiotic that alternates hydroxy and amino acid, ans it helps membranes to be permeable. Valinomycin is a cyclic molecule that helps in ions transportation through membranes. Also, antibiotics have a temperature range of activity, that's why it is sensitive to changes.

8 0
3 years ago
Lisa is in the eighth grade. Normally she is active in clubs, plays sports, and gets good grades, but lately she hasn’t been fee
Monica [59]
Whats the question here?? are you asking which disease she has????
6 0
3 years ago
Why is the resting membrane potential (Vm) approximately - 70 mV for most cells? Most cells contain a large concentration of Cl-
Yuki888 [10]

Answer:

Option (4).

Explanation:

Cell membrane potential may be defined as the difference in the electric potential between inside and outside of the cell. This potential is important for the action potential.

The resting membrane potential of the cell is -70mV. This membrane potential is maintained by the potassium ions of the cell. The cell membrane are almost 40 times more permeable to potassium ions than sodium ions and makes the cell membrane potential negative.

Thus, the correct answer is option (4).

7 0
3 years ago
Which of these statements best describes prey
Harrizon [31]

Prey Definition:

Any animal that is killed and eaten by another animal.

6 0
2 years ago
Which of the following situation would a state government address
Alina [70]

Answer:

The power to lay and collect taxes

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A republican form of government for every state

Extradition

State laws and court decisions must generally be honored by other states

Exercised simultaneously by the national and state governments

4 0
3 years ago
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