BIOLOGY HIGH SCHOOL

At resting potential the inside of the cell membrane is negatively charged. Why?

Answers

Answer 1
Answer: When the membrane is at rest, K+ ions accumulate inside the cell due to a net movement with the concentration gradient. The negative charge within the cell is created by the cell membrane being more permeable to potassium ion movement than sodium ion movement.

Related Questions

Amylase becomes denatured at a temperature of 80c. During an experiment to study the effect of varying temperatures on enzyme activity, amylase's reactivity with starch was measured at a body temperature of 37c and then again at an increased temperature of 42c. How would this increase in temperature affect the experiment?
Which of the following best describes the difference between mitosis or M phase and cytokinesis?
The first antibiotic was made because of properties discovered in a certain type of
Organisms adapted to surviving in water with the widest range of salinity would most likely be native species in which marine environments? a) Coral Reefs b) Intertidal Zones c) Deep Ocean d) Estuaries
Directions: Select each correct answer. More than one answer may be correct.Rodrigo is using the design process to make a device that will cool a drink without ice or electricity. His first prototype was simply an airtight, watertight pouch containing 40 g of ammonium chloride (NH4Cl). He added 100 mL of water to the ammonium chloride, sealed the pouch tightly, and then wrapped the pouch around a small bottle of water. He tested his prototype by measuring the temperature of the bottle of water over time. Next, Rodrigo performed the same test with different amounts and different concentrations of the ammonium chloride solution. For each set of measurements, he found the lowest temperature reached by the bottle of water and calculated the total temperature change. The table below summarizes his results. Maximum Cooling Achieved ___________________________________________ trial 1 2 3 4 5 6 7 ___________________________________________ grams of NH4Cl 30 40 50 50 60 70 80 ___________________________________________ amount (mL) of water added 100 100 100 150 150 200 200 ___________________________________________ greatest temperature change (–°C) 3.6 4.3 4.3 4.8 5.2 5.6 5.8 ___________________________________________ Finally, Rodrigo held the amount and concentration of the solution constant while trying different amounts of insulation. Maximum Cooling Achieved __________________________________________ trial 8 9 10 11 ___________________________________________ insulation used: none towel blanket polystyrene-foam ______________________________________________ greatest temperature change (–°C) 5.8 8.8 9.3 9.6 _____________________________________________ Rodrigo wants to find more ways to improve his latest design. Which of the following should he try? (CHOOSE ALL THAT APPLY) A - a more concentrated solution B - a less concentrated solution C - better insulation D - less insulation E - a greater amount of solution F - a lesser amount of solution

Which statement is true according to the quantum model of the atom?When an electron drops down from a high energy level to a lower one, light energy is emitted.
When an electron jumps up from a low energy level to a higher one, light energy is emitted.
Every orbit around the nucleus of an atom is the same energy level.
After they emit light, electrons are sucked into the nucleus of the atom.

Answers

Answer: Option (a) is the correct answer.

Explanation:

Every orbit has a fixed value of energy which means that energy is quantised. When heat is absorbed by the atom then the electrons go from low energy level to high energy level.

Whereas when heat or energy is released by the atom then electrons move from high energy level to low energy level. As a result, this heat is released in the form of visible light.

Thus, we can conclude that the statement when an electron drops down from a high energy level to a lower one, light energy is emitted, is true according to the quantum model of the atom.

After a period of (blank), a person who divorces will begin to construct a new identity as a single person. A: attachment anxiety
B: separation anxiety
C: separation shock
D: attachment shock

Answers

C) separation shock.
hope this helps you.

In which of the following locations is a shield volcano likely to form? At a hotspot Near a transform fault Along a divergent plate boundary Near diverging oceanic plate boundaries

Answers

"At a hotspot Near a transform" is the best option from the list in terms of where a shield volcano would be likely to form, but it should be noted that this is not always the case. 

Answer:

The correct answer is "At a hotspot".

Explanation:

A shield volcano is characterized by being comprised in its majority of lava flows. The flow usually is really slow and of low viscosity. Shield volcanos are formed at hotspot locations where magma comes from the bottom to the surface. The formation occurs by layers of magma coming up which later freezes and other layers of magma covering up, which consequently forms the volcano.

What is a ridge-like deposit of sediment at the edge of a glacier?

Answers

Moraine

A moraine is a material left behind by a moving glacier. This material is usually soil and rock. Just as rivers carry along along all sorts of debris and silt that eventually  builds to form deltas, glaciers transport all sorts of dirt and boulders that build up to form moraines. It only show up in places that have, or used to have, glaciers.

The correct answer is:

Morain

Explanation:

A moraine is any glacially formed gathering of unconsolidated glacial detritus that occurs in both currently and previously glaciated regions on Earth, completed geomorphological methods. Moraines are accretions of dirt and rocks that have fallen onto the glacier surface or have been pushed along by the glacier as it moves. The dirt and rocks composing moraines can differ in size from powdery silt to large rocks and cliffs.

Non-cardiogenic pulmonary edema is the most profound effect from exposure to

Answers

Alcohol and drug abuse, certain medications, and viral infections may lead to Non-cardiogenic pulmonary edema. Exposure to either of these could contribute or increase the chances getting Non-cardiogenic pulmonary edema.

Answer:

Non-cardiogenic pulmonary is due to anticancer therapy.

Explanation:

Noncardiogenic aspiratory edema (NCPE) is an uncommon and less well-conspicuous pulmonotoxic disorder of anticancer treatment than pneumonitis/fibrosis.  

NCPE is a clinical disorder portrayed by concurrent nearness of serious hypoxemia, respective alveolar invades on chest radiograph and no proof of left atrial hypertension/congestive cardiovascular breakdown. The analysis of medication-related NCPE depends upon recorded rejection of any irresistible, metabolic, or disease-related causes.  

The time closeness to treatment with medications that are known to hasten NCPE, any first scenes of influenza-like side effects during past chemotherapy courses and conceivable reaction to corticosteroids may further help such a finding.

Malignancy remedial specialists plainly connected with NCPE are cytarabine, gemcitabine, and interleukin-2, just as all-trans retinoic corrosive in intense promyelocytic leukemia patients, while a couple of different mixes have infrequently or every so often been ensnared. The pathophysiology of lung damage in medication incited NCPE stays misty.

Earth’s continents are constantly in motion because they sit on top of gigantic plates which float on Earth’s mantle. Energy from the Earth’s core creates convection currents in the molten layer, and the currents move the plates. Over extremely long periods of time, this movement creates new _______. a. biomes b. plates c. atmospheric layers d. elements

Answers

The correct answer is A. Biomes.

Earth’s continents are constantly in motion because they sit on top of gigantic plates which float on Earth’s mantle. Energy from the Earth’s core creates convection currents in the molten layer, and the currents move the plates. Over extremely long periods of time, this movement creates new biomes.

The continents of the Earth are constantly in motion . The reason for this motion is the position of the tectonic plates over the mantle of the Earth. The movement of these plates, causes the continents to move. Over the time, these movements becomes substantial and the drifting of the continents is visible. This leads to the formation of the new biomes. The flaura and fauna changes with these movements.

Hence, the correct answer is 'Option A - Biomes'.
Other Questions
Blood that leaves the heart for the body passes through a large blood vessel called thea. pulmonary vein. b. pulmonary artery. c. aorta. d. vena cava.
A CELL CAN ONLY GROW SO LARGE IN SIZE, BECAUSE
A group of organs working together to perform a certain function is a(n) ____.a. organ system c. organ b. tissue d. organism
Sir Arthur Conan Doyle's "The Contest" is a piece of historical fiction because it focuses on the historical figure of Nero and recreates ancient Rome and Greece. In the story, Doyle indicates that the Greeks took their cultural performances and art seriously and were good judges of art. Which of the following lines from "The Contest" best support that claim?A. ". . . but at the same time he understood that only a master of song could receive such a reception from a Greek audience." B. "Every Greek was a trained critic, and as unsparing in his hisses as he was lavish in his applause." "But now, as the man stopped and wiped the abundant sweat from his fat face, the whole assembly burst into a delirium of appreciation." C. "Soldiers ran to pull him down, and the whole audience was in confusion, some of the bolder cheering the sentiments of the shepherd, and others crying that he should be cast out of the building." D. "It was all simple and childlike, but it went to the hearts of the Olympians, for it spoke of the land which they knew and loved."