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Naddik [55]
3 years ago
15

In both bergmann's and allen's rules, surface area plays a major role in how heat is conserved or dissipated. what happens in an

imals with greater surface area?
Biology
1 answer:
Sauron [17]3 years ago
5 0
Allen’s Rule refers to organisms in cold climates with round body form which has a smaller surface area to volume ratios. Larger bodies are more compact and retain heat.
<span>Bergmann’s Rule refers to organisms in which body size is large in cold climates and small in warm climates. Large bodies have a smaller surface area to volume ratios. In warm climates where you need to expel heat, so bodies are smaller and more linear.</span>
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Birds and mammals have a four-chambered heart, but most reptiles have a three-chambered heart. How does this fact affect the con
eduard

Answer:

The animals present body structure is due to evolution. It is seen in each part including the structure of the heart. The vertebrate heart becomes complex from a simpler form.  

Invertebrates, the heart of fishes is two-chambered having one auricle and one ventricle. The deoxygenated blood gets purified in the gills. They are aquatic and no lungs for breathing. The hearts pump a mixture of oxygenated and deoxygenated blood to the body.  

The amphibians and reptiles have 3 chambered heart as they lead terrestrial mode of life. The gills modified into the lungs.  The left auricle receives pure blood and the right auricle receives deoxygenated blood. The blood purified in the lungs and in the ventricle, both types of blood get a mix. The ventricle pumps the mixed-blood throughout the body.

In the case of birds and mammal, the heart is 4 chambered and the oxygenated and deoxygenated blood are separated. These two are higher vertebrates. No mix of pure and impure blood, the body receives only the oxygenated blood.

This shows to construct the phylogenetic tree of vertebrates - the fishes should be in the bottom, and above it amphibians, reptiles, then, mammals and birds on the top branch of the tree. As the chambers and structure of the hearts modified one after another.

6 0
3 years ago
true or false surgical asepsis refers to practices that keep objects and areas free from all microorganisms
Liono4ka [1.6K]

Answer:

The statement is true

Explanation:

Asepsis means the absence of infection-causing germs and surgical asepsis means the absence of all the microorganisms or spores in any invasive process.  

Surgical asepsis is usually used medical procedure when a foreign object is used to insert into the patient body which can open a transmission route of infection causing germs into the patient body. For example, using a catheter in patients.  

So surgical asepsis is important to avoid any type of infection in the patient during his treatment. So the statement is true.

4 0
3 years ago
What benefit would an improved muscle tone from strengthening the quadriceps femoris muscles provide?
iogann1982 [59]
The answer to this question would be: better-stabilized knee joint

The quadriceps femoris muscle is located in the anterior part of the femur. This group of muscle is used for extension. It has no role in flexion, abduction or adduction. In general, training a muscle will stabilize the nearby joint. In this case, the quadriceps will stabilize the knee joint.
8 0
3 years ago
Why is diffusion important for cells? Why is diffusion important for cells?
san4es73 [151]
Diffusion is essential for cells to bring nutrients and releasing wastes WITHOUT spending energy. This is accomplished by the "urge" of a system to achieve equilibrium, which means that materials tend to flow from high concentration to low concentration area. For example, if a cell lacks amino acids, and therefore has a low concentration of it inside the cell compared to the outside, then by diffusion, the amino acids outside will flow in through the membrane until the concentrations of amino acids outside and inside the cell are the same. All these are done without spending energy from the cell. Note, however, that simple diffusion cannot transport larger particles or those insoluble in lipids; these materials have to be transported with facilitated diffusion, where a carrier on the membrane of the cell will help bring in the materials.
<span>Diffusion is when particles in a more concentrated area move to a less concentrated area, through a semi- permeable membrane. Without diffusion, the cells in your body will not be able to obtain the resources they need to survive, like water and proteins.</span>
4 0
3 years ago
Does the amount of bacteria change After conjugation?
Sphinxa [80]

Answer: yea it does

Explanation:

conjugation (prokaryotes) Conjugation is the process by which one bacterium transfers genetic material to another through direct contact. During conjugation, one bacterium serves as the donor of the genetic material, and the other serves as the recipient.

6 0
3 years ago
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