All categories

3 years ago

When working muscle cells are deprived of oxygen they produce?

1 answer:

3 0

Lactic acid

During intense exertion or activity involving the muscles, there arises a need for a sudden short term burst of energy. This need for energy is so demanding that it cannot be satisfied through the normal mechanism whereby energy is supplied through aerobic respiration using oxygen.Therefore the muscle cells must rely on other mechanisms that do not rely on oxygen to fuel muscle contraction and this is where they resort to anaerobic respiration which uses pyruvate to play the role of oxygen as the final electron acceptor. In the process, pyruvate accepts an electron and is reduced to lactic acid in the muscle tissues.

You might be interested in

In 3–5 sentences, explain the various factors that should be considered when implementing green roofs.

Gala2k [10]

Answer:

Several factors have to be considered while planting green roofs. 

Explanation:

Green roof is a roof with vegetation growing in it. The vegetation is usually grown above a waterproof cover. Many factors have to be considered while installing a green roof.

First is sunlight availability. While installing green roofs it has to be ensured that its location has adequate sunlight availability. If not the plants that require less sunlight must be chosen. The roof should be flat or have low inclination. The maximum allowable inclination is 30 degree.

The choice of plants has to be made according to the climate of the region. The dry or wet nature of the region’s weather decides the type of plants grown there. 

3 0

4 years ago

Describe each step required to make a gene knock-out in mice.

Ahat [919]

Answer:

1. Designing of the target vector.

2. Insertion of the target vector into the embryonic stem cell

3. Selection of the cells

4. Injecting selected cells into the new cells

5. Breeding of mouse with a normal mouse

Explanation:

The target vectors are made by inserting markers into them. The target vector is inserted into ES cells. The vector generally recombined with the target gene and knock-out that gene. Sometimes, recombination of vectors occurs at incorrect place.

The cells survive in the presence of markers only if the target gene is incorporated with target vector. The cells with the target vector are injected into a normal developing embryo of mouse.

The developed mouse will consist of heterozygous knockout cells and its own cells. The normal mouse is bred with this chimeric mouse. The offspring of these mouse are able to transfer knock-out gene to next generation.

6 0

3 years ago

Which is only active during a specific immune response?

Ksenya-84 [330]

The answer is B. B Cells

7 0

3 years ago

What role does the sun play in atmosperic cycles?

Sidana [21]

Respiration and Photosynthesis

6 0

3 years ago

PLEASE LOOK AT THIS!!!

Talja [164]

Answer:

Solid: State of matter with definite shape.

Gas: State of matter with particles very far apart.

1 or 3: Arrows that show particles getting closer together.

2 or 4: Arrows that show particles gaining energy.

Gas: State of matter that will fill any container.

Liquid: Sate of matter with definite volume but not shape.

Solid: State of mater with least amount of kinetic energy.

Explanation:

There are three states of matter :

Solid: It is the state in which atoms are tightly packed such that either they can make no movement at all or just can cause vibrations. Hence, solids have a definite shape and volume.

Liquids: When the solid molecules are heated, they gain energy and free themselves, converting into the liquid state. The molecules have a definite volume but not a definite shape.

Gas: When liquid molecules are heated together, they gain more energy and start hitting the walls of the container with a much greater space. They move more freely in this state and hence the molecules do not have a definite shape or volume in this state.

4 0

3 years ago