Answer:
Bacteria take DNA from their environment.
Explanation:
"Bacteria take DNA from their environment" is what best describes transformation in bacteria.
- During Systole, the arterial pressure is maximum ,so option c is correct.
- During isovolumetric relaxation, AV and semilunar valve opens and the ventricular pressure decrease.
- The human heart's activity from the start of one heartbeat to the start of the next is known as the cardiac cycle. It consists of twophases: a diastole, in which the heart muscle relaxes and re-fills with blood, and a systole, in which the heart muscle contracts forcefully and pumps blood. The heart quickly relaxes and expands after emptying to receive a second inflow of blood returning from the lungs and other body systems, then contracts to send blood back to those systems. A healthy heart must fully expand before it can once again pump effectively.
- Isovolumetric relaxation is the second heart sound is produced when the aortic and pulmonary valves close when the ventricular pressures fall below the diastolic aortic and pulmonary pressures (80 mmHg and 10 mmHg, respectively) . The start of diastole is indicated by this.
So, Ventricular contraction and Isovolumetric relaxation gets distinguished by their specific characteristics.
To know more about systole, please refer:
brainly.com/question/25149738
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The answer is: <span><span>has antigens A and B on the red blood cells
</span>
Human blood contains either:
A antigens (A)
B antigens (B)
A and B antigens together (AB)
none of these antigens (O)
corresponding to the A,<span> B</span>,<span> AB</span>, and O blood types, respectively.
Antigens are molecules that can cause an immune response to be mounted against them in the form of antibodies. Antigen is an abbreviation for 'antibody generator'.
In the case of the ABO blood groups, the antigens are sugars on the red blood cells.
Antibodies are complex proteins made by certain immune cells, and these proteins have the ability to bind foreign material or microbes, which can block their harmful action and label them for quicker elimination.
Example:
When a person has a blood type with a particular antigen (e.g. A), he or she won't produce antibodies against that blood type, so they are safe to receive blood from individuals with similar blood types (won't be considered foreign). They can also receive blood from blood type O donors because they don't have any antigens that would cause an immune response.
But this person with blood type A, has antibodies against blood type B (to defend oneself from foreign material), so if they were transfused type B blood in this case, they would experience a dangerous immune reaction as the antibodies would bind the B antigens of the B blood type red blood cells.
<span>
Blood type O individuals are universal donors = can donate blood to anyone.
Blood type AB individuals are universal receivers = can receive blood from any group.</span></span>
C. The strongest species survive
