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Alexxandr [17]
3 years ago
11

1. What function does the shape of the star-nosed mole's nose serve?

Biology
1 answer:
solniwko [45]3 years ago
7 0
The star-nosed mole does prefer wet, poorly drained areas and marshes.<span> It is a good swimmer and can forage along the bottoms of streams and ponds. 
The best answer to the question above is the second option.</span><span>It helps the mole eliminate excess heat.</span>
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What type of interaction is the amino group most likely to be involved in?
Rainbow [258]

Answer:

H,N-CH-Cho

Explanation:

Hope it helps.

8 0
3 years ago
Place the following events of muscle excitation in the correct order.
svetlana [45]

An motion potential in the presynaptic cell activates calcium channels. Ca+ triggers the discharge of Acetylcholine through exocytosis. Ach binds its receptors in the postsynaptic membrane, opening Na+ channels. The Order is 4, 3, 5, 1, 2.

The principal frightened system generates an motion potential that travels to the goal activating the calcium channels ⇒ event (4)

Calcium triggers vesicles fusion to the presynaptic membrane. By exocytosis, vesicles release the neurotransmitter -Acetylcholine- into the synaptic space ⇒ event (3)

Once there, Ach binds to its receptors on the postsynaptic membrane of the skeletal muscle fiber, causing ion channels to open ⇒ event (5)

Positively charged sodium ions move the membrane to get into the muscle fiber (sarcoplasm) and potassium leaves the cell ⇒ event (1)

The distinction in charges, resulting from these ions' transport, positively charges the fiber membrane. The postsynaptic cell depolarizes ⇒ Event (2)

The motion potential enters the t-tubules depolarizing the internal part of the muscle fiber. Contraction initiates while the motion potential depolarizes the internal part of the muscle fiber. Calcium channels spark off in the T tubules membrane, releasing calcium into the sarcolemma.

At this point, the muscle is at rest, and the tropomyosin is inhibiting the appeal strengths between myosin and actin filaments. Tropomyosin is obstructing binding sites for myosin on the skinny filament.

When calcium enters the sarcolemma, it binds to troponin C, and troponin T alters the tropomyosin role through shifting it and unblocking the binding sites.

Myosin heads be a part of the uncovered actin-binding points forming move-bridges, and whilst doing so, ATP turns into ADP and inorganic phosphate, that's released.

Myofilaments slide impulsed through chemical energy accumulated in myosin heads, generating a strength stroke. The strength stroke initiates while the myosin move-bridge binds to actin. As they slide, ADP molecules are released. A new ATP hyperlinks to myosin heads and breaks the bindings to the actin filament.

Then ATP splits into ADP and phosphate, and the energy produced is gathered in the myosin heads, which begins offevolved a new binding cycle to actin.

Finally, Z-bands are pulled towards every other, and the sarcomere and the I-band get shorter, generating muscle fiber contraction.

According to those steps, the appropriate order of activities is 4, 3, 5, 1, 2.

To learn more about Acetylcholine, click here:

brainly.com/question/13821381

#SPJ4

7 0
9 months ago
Is a grasshopper a herbivore carnivore or omnivore
Natali [406]

Answer:

Grasshoppers are a herbivores because they eat plants

Explanation:

5 0
2 years ago
Read 2 more answers
Which issue is a negative effect of cell technology on society? Immortal animal cell lines can be used to model human cells. The
sattari [20]
<span>The use of human cells in research can lead to ethical problems

Because the new use of cells most often lead to this "grey area" in ethics as it is a new area of science and our society is not yet conditioned to this scientific breakthough. As there is no "moral code" on human cell use, ethical objections can arise and led to conflicts.
</span><span>
When looking at the other options they do not cause negative effects on society

1) </span><span>Immortal animal cell lines can be used to model human cells.
 ----> This technology is not yet developed so it cannot be negative (yet)
2) Organ culture increases the time between donation and transplant.
-----> Organ culture are actualy </span><span>an alternative for organs from donors, and will not increase the time btween donation and transplant</span><span>
3) People are more aware of the results of cell technology research.
</span>-----> Awareness of research lead to greater understanding and unity
3 0
3 years ago
Read 2 more answers
Amphibians, reptiles, fish, birds, and mammals share
Masteriza [31]

Answer:

Bones. They are vertabrates, which means they have a backbone

Explanation:

Fish, reptiles, amphibians, birds and mammals all have bones

3 0
2 years ago
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