Identify the low-pressure areas on the map.
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The absorbed food materials are transported by blood and lymph. Lymph is finally transferred to the blood circulation. The blood transports absorbed food materials to different body cells where food materials become integral component of the living protoplasm and are used for energy, growth and repair. This is called assimilation of food.

Acceleration  of a body is defined as rate of chance in velocity with respect to time and its S.I. Units are / or

Magnitude of average acceleration of a body = (final speed - initial speed)/time interval =

where, final speed =v= 11 m/s; initial speed = u = 6 m/s; and time interval = t = 3 s

Hence acceleration = = =

Answer:

The acceleration of the object is 1.667 m/s2.

Explanation:

Given data:

Initial velocity = v1 = 6 m/s

Final velocity = v2 = 11 m/s

Time period = t = 3 s

Solution:

Acceleration = a = ( v2 - v1)/t

By putting values in the above formula:

Acceleration = a = (11 - 6)/3

                        a = 5/3 = 1.6667

Explanation:

Acceleration of an moving object is the change of velocity of an object divided by the total time taken by the object which is time period. So by putting values it comes that acceleration of object is 1.6667 m/s2.

The unit is meter per second square.

Earthworms are delicate. Careful handling is important toavoid damaging the internal organs.

Place the worm with the dorsal side up. Start the dissection2 centimeters posterior the reproductive segment. Snip the skin above the dorsal bloodvessel  ( near the posterior pin) throughthe septa to the mouth.

Answer:

Earthworms are delicate. Careful handling is important to avoid damaging the internal organs.

Place the worm with the dorsal side up. Start the dissection 2 centimeters posterior the reproductive segment. Snip the skin above the dorsal blood vessel  ( near the posterior pin) through the septa to the mouth.

Explanation:

Answer: Diffusion

Explanation:

The osmosis is explained as the selective permeability of the membranes which allows the movement of the solute from higher concentration to lower concentration.

This is associated with diffusion which can be defined as the random movement of the particles in order to attain equilibrium.

The diffusion allows the movement of the particles and osmosis allows the movement of only selective materials.

Answer:

The lower back pain and bilateral leg pain is due to over and intense physical activity which causes stretching of ligaments and muscles resulting in back and leg pain. Such pain can be managed by limited or by reducing physical activity.  The dark color of urine is due to the presence of bile (bilirubin) in the urine. Here the patient has a past medical history of alcohol abuse. Excessive alcohol intake enhances gut permeability resulting in enhanced absorption of bacterial endotoxins. Excessive endotoxins in the liver cause damage of the kupffer cells in the liver, resulting in the release of bilirubin in the blood which ultimately passes through kidneys into the urine.

Explanation:

Answer:

Explanation:

The cell membrane separates the cell from the outer environment. The extracellular fluid contains the sodium ions (Na+), chloride ions (Cl-), while intracellular fluid contains potassium (K +) and negative anions.

The potential difference arises when the membrane is selectively permeable to some ions. The resting potential is -70mV.  

When the neurons get excited, the sodium ions start to enter by sodium channels.  

Now there are more positive ions inside the cell membrane. It disturbs the resting potential i.e. -70mV. This stage is known as depolarization.

When the inside environment of the cell is more positively charged, the potassium ions start to move out of the cell. It goes out by the voltage-gated channels. Thus resting stage is maintained and it is known as repolarization.

But the initial stability of the cell membrane has to be maintained. To restore the resting stage, the sodium ions start to move out of the membrane and potassium ions enter into the cells again. This is an active transport and has done by the Na+ - K+ pump. Here 3 sodium ions move out and 2  potassium ions pumped into the cell through the plasma membrane.  

Thus the resting potential regains. The potassium ions come back into the cells against the concentration gradient and ATP provides the energy for this phenomena.

Answer:

False.

Explanation:

Neuron or nerve cell may be defined as the structural and functional unit of the nervous system. The neurons conduct the nerve impulse and helps in the transmission of signals.

The depolarization of the cell occurs due to the influx of sodium ions into the cell. For the cell membrane to be in resting potential, the potassium ions moves inside the cell from outside the environment and not out of the cell of the organism.

Thus, the correct answer is option (b).