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RideAnS [48]
4 years ago
5

Please help!!!

Biology
1 answer:
Dafna11 [192]4 years ago
5 0

Answer:

To demonstrate osmosis

Explanation:

  1. Put 350cm3 of distilled water into the beaker.
  2. Dip the visking tubing in water to moisten it. fill half the visking tubing with provided sugar solution and then tie the open end of the tubing.
  3. Immerse the visking tubing into the distilled water in the beaker and suspend it in the solution using the glass rod.
  4. Leave the set up for 30 minutes.
  5. Record your observation.
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Darwin’s theory of evolutions unifies all of __________.
makvit [3.9K]

Answer:

biology

Explanation:

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1. on the trace above
ser-zykov [4K]

Answer:

1. when there is cardiovascular disease.

2. High blood pressure increases the likelihood of suffering a stroke, a heart attack, heart failure, kidney disease or premature death.

3. The mitral valve opens.

Explanation:

1. High blood pressure is a common condition in which the force exerted by blood against the walls of the arteries over the course of time is high enough to cause you health problems such as heart disease. After the first rise of pressure caused cardiac ejection volume, one notch occurs with a second ascent product of the reflection of the pulse wave. In younger individuals, with elastic arteries, said wave occurs in diastole, so does not influence the peak systolic pressure. By contrast, with advancing age and the stiffness of large vessels, the reflected wave is transmitted prior to the aorta (systole) so as to increase the peak central PAS.

2. The pressure increases progressively the pressure of the blood flowing through the arteries. As a result, you can submit the following: Arteries damaged and narrowed. High blood pressure can damage the cells of the inner lining of the arteries.

3. When the pressure in the left ventricle falls below the pressure of the left atrium, the mitral valve opens, and the left ventricle fills with blood that had been accumulating in the left atrium.

6 0
3 years ago
Which of the following is one of the chemical building blocks of cells? a. water c. air b. food d. carbohydrates
ikadub [295]

Answer:

d. carbohydrates.

Explanation:

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Simple carbohydrates

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3 0
3 years ago
A pure-breeding fruit fly with the recessive mutation cut wing, caused by the homozygous cc genotype, is crossed to a pure-breed
insens350 [35]

Answer:

1. 0% of probability, 2. 50% of probability, 3. 75% of probability.

Explanation:

In order to find the probabilities we have to draw Punnet squares.  The mutated gene will be symbolized with a *.

1. Male CC with female CC, there is no mutation, the probability will be 0%.

         X           Y

X   ║   XX   ║  XY

X   ║  XX    ║  XY  

2. The male has not got a mutation and the female has. When we draw the Punnet square, with one female X mutated, we find that there is a 50% of probability of mutation.

         X            Y

X* ║  X*X    ║  X*Y

X   ║  XX     ║ XY

3. Now both, the female and the male, has the mutation. When we draw the Punnet square with mutations in  the female and in the male, we find that there is a 75% of probability of  mutation.

       X*             Y

X* ║ X*X*    ║   X*Y

X  ║  XX*    ║  XY

5 0
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Which type of cell is responsible for bone deposition?
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Osteoblasts I believe

Explanation:

8 0
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