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Alex_Xolod [135]
2 years ago
14

Which question can be answered by science?

Biology
1 answer:
jasenka [17]2 years ago
5 0
A

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Joanna had a small ventricle septal defect (vsd) repaired when she was 3 years old and has no residual cardiac problems. she is
artcher [175]

In the given case, no antibiotic is needed for dental procedures.  

Based on the updated recommendations from the American Heart Association, there is no need to take a precautionary antibiotic prior to dental proceedings for the majority of people.  

It has been suggested by AHA that only those who are at greatest threat of bad consequences from infective endocarditis needs to get the short-term preventive antibiotics prior to routine dental approaches.  

It has been recommended by the AHA guidelines that various of the people who have taken preventive antibiotics in the past no longer need them, these include the individuals with the conditions, like mitral valve prolapse, ventricular septal defect, bicuspid valve disease, rheumatic heart disease, and others.  


8 0
3 years ago
Which of the following best describes how a blood cell and skin cell have the exact same DNA sequence and yet look different and
den301095 [7]

Answer:

This question is incomplete as it lacks options, however, it will be answered BROADLY so the it can be understood enough to select the correct answer.

Please find the explanation below

Explanation:

Cells perform different functions and look differently because of the process of CELL DIFFERENTIATION. All cells arise from a single stem cell, which then gradually differentiates into different types of cells with different functions, as they divide.

At the molecular level, these different types of cells contain the same DNA sequence as rightly stated in the question. However, they look and perform differently because some of the genes are turned on while the others are turned off via the process of GENE EXPRESSION.

Therefore, a blood cell and skin cell possess exactly the same DNA sequence but look different and perform different functions because of CELL DIFFERENTIATION in which some genes on the DNA sequence are expressed and others are repressed. For example, in the blood cell; the genes coding for certain proteins found in blood are expressed while every other gene is silenced or inhibited. This allows those cells to perform only blood-related functions.

3 0
2 years ago
What is the mass percent of oxygen in barium perchlorate?
Marina CMI [18]
The mass percent of oxygen in Barium perchlorate is is 38%.

The molecular mass of Barium perchlorate (Ba(ClO4)2) is 336.2282 g/mol.
Percent composition of Oxygen will be = [(Molecular mass of Oxygen  X 8)/ Molecular mass of Barium perchlorate] X 100%
= [(15.99 X 8)/336.2282] X 100% = 38%

5 0
3 years ago
Which of the following statements is true of chemical bonds?
blsea [12.9K]
Covalent bonds share electrons between two atoms.
4 0
3 years ago
Which of the following is the fluid component of blood that contains water, proteins, nutrients, electrolytes, and wastes?
aliina [53]

Answer:

Hello its C plasma

Explanation:

Blood has two parts 1.blood cells 2.plasma

Plasma makes up 55 percent of blood and blood cells form 45 percent of blood.

The cell part contains three type of cells.

  1. Erytrocyte
  2. Lokosite
  3. Platelets

Plasma contains:

  1. About 90 percent of water
  2. 7_8 percent proteins
  3. About 1 or 2 percent nutrients and.....

Hope you understand.

7 0
3 years ago
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