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bonufazy [111]
3 years ago
14

Which of the following chemicals opens us binding sites allowing muscle filaments to connect to each other? Select one:

Biology
1 answer:
HACTEHA [7]3 years ago
3 0

Answer:

The correct answer will be option-D.

Explanation:

Calcium plays an important role in muscle contraction as they are released from the sarcoplasmic reticulum after they receive electric impulse.

Calcium triggers the muscle contraction cycle as these calcium ions bind to the troponin-tropomyosin complex. This binding exposes the myosin-binding site on the actin on which high energy myosin binds and cross-bridge is formed.

This cross-bridge formation causes the contraction of the sarcomere and therefore muscle contracts.

Thus, option-D is the correct answer.

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What are some non examples of microclimate?
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Answer:

Microclimates exist, for example, near bodies of water which may cool the local atmosphere, or in heavy urban areas where brick, concrete, and asphalt absorb the sun's energy, heat up, and re-radiate that heat to the ambient air: the resulting urban heat island is a kind of microclimate.

Explanation:

Mark me as brainliest

6 0
3 years ago
Mrs. Gupta is the Cub Scout den mother. She is taking a troop of boys on a camp out and believes it will be easier if she schedu
Eva8 [605]

Answer:

The correct option is 21

Explanation:

First of all, it should be noted that the full moon is usually observed in the middle of the lunar month, which is usually 29 or 30 days, hence the full moon can be observed either on the 13th but most likely on the 14th and/or the 15th of the lunar month.

At the early days of the month, the new moon begins to form a crescent which appears and continues to get fuller (called waxing crescent) as the day goes by until half of the moon is noticed (usually after about seven days) on one side, this is known as the first quarter.

After half of the moon is noticed on one side, the moon continues to get fuller (called gibbous moon) until a full moon is noticed on the 14th/15th day. <u>This full moon then starts waning or becoming smaller until the other half of the moon becomes visible while the initially seen half becomes invisible/clouded (this is called </u><u>third quarter</u><u>)</u>. This happens after another 7 days or on the 21st day. This half moon continues to get smaller (forming a waning crescent) until no moon is seen at the end of the month (around the 28 or 29th day) which is referred to the new moon.

Hence, we can see from the above that from the third quarter to a new full moon will go through the steps below

third quarter ⇒ new moon ⇒ first quarter ⇒ full moon

If each step takes about 7 days and there are 3 steps, the approximate number of days she has to wait before the full moon is 21 days.

8 0
3 years ago
The ability to roll the tongue (R) is determined by a dominant gene while the recessive gene results in the inability to roll th
tatyana61 [14]
These are the possible genotypes RR, Rr, Rr, rr First 3 carries dominant gene for tongue rolling, so they can do it, while the 4th genotype rr is homologous for recessive, and he/she can't perform tongue rolling.
6 0
3 years ago
Read 2 more answers
Make a four linked food chain​
OLga [1]

Answer:

Grass -Grasshopper - Frog - Phyton - Eagle

6 0
2 years ago
Please help me answer this its for a module 7 biology review
GREYUIT [131]
<em>1. </em><span><em> the theory that Earth's outer shell is divided into several </em></span><em>plates</em><span><em> that glide over the mantle</em>
<em>2. I am not sure</em>
<em>3. </em></span><span><em>Earth's mantle contained convection cells that dissipated radioactive heat and moved the crust at the surface</em>
<em>4. </em></span><span><em> supercontinent that existed during the late Paleozoic and early Mesozoic eras.</em>
<em>5. </em></span><span><em> the </em></span><em>theory</em><span><em> that the outer rigid layer of the earth (the lithosphere) is divided into a couple of dozen "</em></span><em>plates</em><span><em>" that move around across the earth's surface relative to each other, like slabs of ice on a lake.</em>
<em>6. </em></span><span><em>Africa and South America.</em>
<em>7. I am not sure</em>
<em>8. </em></span><span><em>a small area or region with a relatively hot temperature in comparison to its surroundings.</em>
<em>9. </em></span><em>As the plate moves over a fixed spot deeper in the Earth where magma (molten lava) forms, a new volcano can punch through this plate and create an island. </em>The Hawaiian Islands are believed to be formed from one such 'hot spot'.
8 0
3 years ago
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