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IgorC [24]
3 years ago
9

Blood Type identifies the presence or absence of particular proteins embedded in the cell It is quicker and less expensive than

DNA profiling Produces blood evidence but can still link a suspect to a crime scene or exclude a suspect The presence or absence of cell-surface proteins determines a person’s blood type. True or false?
Biology
1 answer:
hoa [83]3 years ago
7 0
<h2>True </h2>

Explanation:

Blood types are determined by the presence or absence of certain antigens – substances that can trigger an immune response if they are foreign to the body

Some antigens can trigger a patient's immune system to attack the transfused blood, safe blood transfusions depend on careful blood typing and cross-matching

There are four major blood groups determined by the presence or absence of two antigens: A and B on the surface of red blood cells

In addition to the A and B antigens, there is a protein called the Rh factor, which can be either present or absent creating the 8 most common blood types which are A+,A-.B+,B-O+,O-,AB+,AB-

Blood type is inherited and it is determined by the blood type of both father and mother

Blood type helps in DNA fingerprinting and forensic science and plays an important role in determining blood relations or to identify the suspect

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A measuring cylinder contains 40 cm3 of water. When a stone of mass 69 g is dropped into the water, the stone sinks and the wate
rjkz [21]

Answer: 2.3 g cm^3

Explanation: In this case the rise in level of water is same as the volume occupied by the stone.

a) Volume occupied by the stone = 70 cm^3 – 40 cm^3= 30 cm^3

b) Density = mass/volume

                  = 69g/30 cm^3 = 2.3 g cm^3

8 0
2 years ago
All changes saved
Sedbober [7]

Answer:

mitochondrion

Explanation:

8 0
3 years ago
What occurs during a decomposition reaction? The components of several molecules recombine to form new molecules. A compound par
Volgvan
<span>During a decomposition reaction, a compund partitions into it's components. This is a type of a chemical reaction where a larger/more complex compund is broken down into simpler elements or compounds which were initially combined in a chemical reaction.This type of reaction often requires an energy source such as heat or light to break down the compound.</span>
4 0
3 years ago
You are conducting a case control study to determine if an association exists between melanoma and indoor tanning. From a statew
Aleksandr-060686 [28]

Answer:

a. Odds ratio = 1.58

b.  Inasmuch the odds ratio is greater than 1, this means that higher odds of melanoma exist in people exposed to indoor tanning, than in those not exposed to indoor tanning

Explanation:

For case  study                                                  

Let 'a'  represent the total population of people with melanomia = 696                                                      

Let 'b' represent the total number of people with melanomia exposed to indoor tanning  =  1107 – 696 = 411 people

For  control study

Let 'c' represent the total population = 1500

Let 'd' represent the total number of people not exposed to indoor tanning = 1500 - (0.428 * 1500)

                                                          =  1500 - 723

Total number of people not exposed to indoor tanning   = 777 people

                                                       

a. Odds ratio = (a/b) / (d/c) = (696/411) / (777/723)

                                                = 1.69 / 1.07 = 1.58

b. Inasmuch the odds ratio is greater than 1, this means that higher odds of melanoma exist in people exposed to indoor tanning, than in those not exposed to indoor tanning.

7 0
3 years ago
Which of the following is found in all organisms?
Nady [450]
D. DNA
All organisms contain dna
3 0
3 years ago
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