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Novay_Z [31]
3 years ago
9

Why the membrane potential is negative, if there is a higher concentration of positive ions inside the cell than outside (counte

rintuitive at first)?
Biology
1 answer:
Nina [5.8K]3 years ago
3 0

Answer:

Net membrane potential is equal to the difference of positive charge and negative charge existing at the inner and outer side of the cell respectively. Since outer negative charge is higher in concentration, the net membrane potential is negative

Explanation:

The cell membrane potential defined as the net difference of ion concentration existing at the inner and outer side of a cell membrane at nay instance.  

When the cell is at the resting potential, the positive potassium ion starts accumulating at the inner surface of the cell membrane as it becomes favors positive potassium ion. This leads to development of negative potential at the outer side of cell membrane by the accumulation of negative ions or charges. Hence, a net negative potential membrane develops.

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In what way are the humerus and the femur similar?
dimaraw [331]
The humerus-
A long bone of the upper forelimb. It articulates proximally with the scapula to form the soulder joint and distally with the radius and ulna to form the elbow joint.
<span>Proximally the humerus has a rounded projection known as the head. </span>

Cranially at the lateral aspect of the head is a large prominence- the greater tubercle. The lesser tubercle lies medially. Both tubercles act as a sight for muscle attachment. At the distal end of the humerus is a condyle which articulates with the radius & ulna & forms part of the elbow.

The diaphysis of the humerus is twisted.
<span>In the dog a supra condylar foramen is present- a large hole in the condyle.
</span>
The Femur-This is the thigh bone and is the largest bone in the body, it is a long bone and is similar in structure to the humerus in that it has a head, neck, shaft & lateral & medial condyles. The femoral head articulates with the acetabulum proximally to form the hip joint, lateral to the head is the greater trochanter and on the medialTh side is a lesser trochanter (for muscle attachment). At the distal end of the femur are 2 condyles that articulate with the tibia to form the stifle joint. Between the 2 condyles is the trochlear groove along which the patella can move.

Here is some information. Hope this helps ☺
3 0
3 years ago
Read 2 more answers
According to the results for Patient 1 shown above, which antigens were present in Patient 1’s blood? Check all (if any) that ap
soldier1979 [14.2K]

Answer:

A.

Explanation:

Patient 1 has Type A blood because agglutination occurs due to reaction with anti-B. We know that A blood group has antigen A and it is anti-B means that they attack on B type of blood cells while on the other hand, B blood group has antigen B and it is anti-A means that they will attack on the A type blood cells upon mixing. So according to the chart, there is nothing happens by reaction of the blood with anti-A whereas agglutination occur by reaction with anti-B so we can say that the patient has type A blood.

7 0
2 years ago
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Which statement best describes an important process carried
qwelly [4]

Answer:

2 materials are exchanged between fetal and maternla blood

Explanation:

i just took this test and this was correct

4 0
3 years ago
If there is an excess of reactive oxygen species (ross) in a system, where would the problem least likely be found?
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This condition is known as a super oxide in which mutated enzyme extremely functional because it helps in production of cells .

when unstable molecules that contains oxygen and that easily react with other molecules in the cells. a build up of reactive oxygen species and cells causes damage of DNA ,RNA & protein ,which cause cell death.

super oxide refers various toxic oxygen containing free radicals such as monovalant anion O2 (negative) or that compound containing potassium super oxide KO2. reactive oxygen can cause damage to the basic building block of the cell. DNA damage can occur in the form of double stranded breaks as a result of reactive oxygen induced conversion of guanine to 8-oxo guanine.

To learn more about the cell death here

brainly.com/question/14263310

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1 year ago
Enzymes are ___? A.fats b.acids c. Sugars d.proteins
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The answer is D) proteins

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