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Mice21 [21]
2 years ago
10

Describe the connection between the digestive and circulatory systems (in detail)

Biology
1 answer:
Kaylis [27]2 years ago
7 0

Answer:

Explanation:(1) Digestive System gets nutrients (good) from food and hands it over to the blood and Circulatory System then carries those nutrients where they need to go. (2) Filters out waste from food and pushes it through intestines and out the body (and you know how and where it gets out).

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Help asap please!
andreyandreev [35.5K]

Answer:

Active transport:

  • requires energy
  • molecules move from low to high concentration sides
  • Na+ and K+ move by active transport

Simple diffusion:

  • molecules move from high to low concentration sides
  • molecules pass between lipids
  • small non-polar and polar molecules

Facilitated diffusion:

  • molecules move from high to low concentration sides
  • involves channel proteins
  • move large molecules

Explanation:  

  • Simple Diffusion is the pathway of only small molecules that freely move through the membrane by momentary openings produced by the lipids' movements. Diffusion is a slow process that requires short distances and pronounced concentration gradients to be efficient. An example of diffusion is osmosis by which water is the transported molecule.
  • Facilitated diffusion is the transport of hydrophilic molecules that can not freely cross the membrane. Channel protein and many carrier proteins are in charge of this transport. When uncharged molecules cross the membrane, they do it according to their concentration gradients, going from the more concentrated side to the lower concentrated one. When ions need to cross the membrane, the process depends on an electrochemical gradient.  Glucose is an example of a hydrophilic protein that gets into the cell by facilitated diffusion.

Simple diffusion and facilitated diffusion are both passive transport processes because they only depend on electrochemical gradients, so they do not need any energy to occur.

  • Active transport is the transport of molecules that move against the electrochemical gradient, so it does need energy to happen. Molecules move from the lower concentration side to the higher concentration side of the membrane. Carrier proteins are in charge of active transport. The needed energy might proceed from the ATP molecules or the membrane's electric potential. An example of molecules moved by active transport are the Na and K.

7 0
2 years ago
Research indicates that as levels of happiness increase, cortisol levels appear to increase as well. Please select the best answ
iogann1982 [59]

Cortisol hormones are stress hormones that increase blood glucose levels. When the level of happiness increases the level of cortisol does not increase.

<h3>What are cortisol and its function?</h3>

Cortisol is the steroidal hormone that is produced in the cortex of the adrenal glands and is discharged in the blood vessels when in stress or danger.

It has a variety of functions including regulation of the blood pressure, response to the stressful condition and increase of the metabolism of the body.

It also acts as happiness hormones along with adrenaline and oxytocin but is a major flight or fight hormone and increases the heart rate in dangerous conditions.

Therefore, the statement is false.

Learn more about cortisol here:

brainly.com/question/26291522

3 0
2 years ago
Based on the predictions of metapopulation biology, which scenario can be expected to exhibit the largest fraction of occupied h
harkovskaia [24]

Meta-population is the patchiness of population in space and its role is dynamic, population insatiability, coexistence of species, the maintenance of diversity.

Metapopulation is colonization and extinction dynamics. The variable of prime concern is the proportion.As the population largest approaches the environment carrying resources become more scare and growth rate slows.

The m maxima carrying number of species in environment can support indefinitely .A group of spatially separated population of similar organism which interact at some levels.It s population in which multiple populations as butterflies and cool reef fishes.Humans are evolved from multiple interconnected spread out across Africa in large meta-population.

To learn more about Metapopulation here

brainly.com/question/2167013

#SPJ4

6 0
1 year ago
PLEASE HELP!! Due today and I can’t figure this one out
Kipish [7]

Explanation:

ACAMSUYE7YE

8 0
2 years ago
What is a good way to study experimental subjects in their natural environment
Daniel [21]

<u>Answer</u>: There are numerous factors that influence the behavior and physiology of an individual animal/plant etc. By doing the study in their natural environment, you remove any possible bias caused by this.

Furthermore, an individual's behavior will differ in an artificial experimental setup compared to that observed in a natural setting. When possible, studying the subject in its natural environment is the best experimental method.

8 0
3 years ago
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