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Anastasy [175]
3 years ago
5

The blood's glucose level ordinarily remains relatively constant because of the activity of

Biology
1 answer:
Reika [66]3 years ago
5 0
<span>The blood's glucose level ordinarily remains relatively constant because of the activity of:
</span>the liver

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Which of the following is TRUE? Species on Earth today are just a fraction of all species that ever lived. The number of species
Orlov [11]

Answer:

Until recent history,extinctions have always happened gradually and on a small scale.

Explanation:

Extinction occur when environmental factors like natural disaster,habitat fragmentation,over exploitation,global change don't favor the survival of species thus gradually leads to extinction of species.

Some times human activity becomes the major problem for extinction.More over,poor reproduction,decline in population number and genetic inbreeding also leads to extinction.

99% of all species that exist on earth become disappeared.

Evolution leas to speciation which leas to formation of new species but species become extinct when they are unable to survive against competition.

8 0
3 years ago
Which would be losing its seeds pterphyta angiosperms gymnosperms
Naddika [18.5K]
First of all, pterophyta have neither seeds nor flowers in the first place.. Angiosperms are flowers and are the most diverse group of land plants so I doubt they would be losing its seeds... Lastly gymnosperms are a group of seed producing plants.. According to what I just wrote, what do you think the answer is??
6 0
3 years ago
Drag each tile to the correct box.
levacccp [35]

Complete question:

Drag each tile to the correct box.

Lucia is walking barefoot in her yard. She accidentally steps on a nail. How will her nervous system work to generate a reaction? Arrange the events chronologically.

  1. Interneurons relay the impulse to motor neurons in the spinal cord.
  2. She immediately moves her foot.
  3. The sensory neuron generates an impulse.
  4. Receptors in her toe receive stimuli.
  5. Motor neurons signal the leg muscles.

Answer:

4. Receptors in her toe receive stimuli

3. The sensory neuron generates an impulse.  

1. Interneurons relay the impulse to motor neurons in the spinal cord.

5. Motor neuron signal the leg muscles    

2. She immediately moves her foot.  

Explanation:

The reflex arc refers to an action mechanism that responds to different stimuli.  It is an involuntary reaction involving different nervous vias. The reflex arc is composed of receptors, afferent nervous fibers, efferent nervous fibers, and effectors.    

Receptors are located in nervous terminals and are widely distributed in the organism. Receptors are capable of receiving stimuli from different nature, and most of them are specialized in one kind of stimuli such as vision, audition, touch, among others. In the exposed example, these sensory receptors were located in the toe, and probably they were touch receptors.

When they receive the stimulus the sensory neuron transforms it into an excitatory nervous impulse that goes to the central nervous system along the afferent nerves. This stage is known as the <u>afferent via</u>, beginning with the environmental information received by sensory receptors, and ending in the arrival of the transcripted message to the central nervous system.

When the central nervous system receives the information, it processes it and sends an appropriate answer according to the stimulus. The message goes along the interneurons to the motor fibers, which are in charge of taking that answer to its destiny, the effectors. Effectors are usually muscles or glands, and they transform the received impulse into a motor answer that executes the reflex action. In the exposed example, the effector in the muscle. This stage is known as the <u>efferent via</u>, beginning in the central nervous system sending an answer impulse and ending in the effector (muscle) executing the answer.

4 0
3 years ago
Which statement is true regarding the two beakers and the contents of each? A) The beet core in beaker A is at equilibrium with
bazaltina [42]

Answer:

A) The beet core in beaker A is at equilibrium with the surrounding water

Explanation:

In the picture next to beaker A, there are to 0.4s next to weird symbols, I'm assuming it means the beet core and water are the same solubility.

7 0
3 years ago
Result of this action potential releases what ion from the terminal cisternae
spin [16.1K]
The  terminal  cisternae  releases  calcium  ion

  
The  terminal  cisternae   act  as   calcium  storage  sites.  The  calcium  ions  stored in  the  terminal  cisternae  are  essential  in  muscle   contraction. The  calcium  release  unit  of  muscle  consists of  terminal  cisternae  of  the  sarcoplasmic  reticulum  and  it  is  adjacent  transverse  or T-  tubule  that  is  the  invaginated  part  of  the  surface  membrane.
7 0
3 years ago
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