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Ksju [112]
3 years ago
11

Which of the following aquatic environments would not freeze in the winter

Biology
1 answer:
liberstina [14]3 years ago
6 0
What are the answer choices?

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What is the correct order of events in the sliding filament theory of muscle contraction? 1. Myosin head binds to actin 2. Calci
valkas [14]

Answer:

The correct order is: 6) Sarcoplasmic reticulum releases calcium ions, 2) Calcium ions bind to troponin, 5) Tropomyosin moves to expose active sites of actin, 4) ATP is split into ADP and P, 1) Myosin head binds to actin, 7) ADP and P released from myosin, 3) Myosin cross-bridges bend, pulling actin toward center of sarcomere.

Explanation:

The ability to contract is an important property of the muscle cells and is fundamental to animals because muscles not only make locomotion possible but are also responsible for the correct functioning of organs (including the heart).

The mechanism behind muscle contraction is the sliding of filaments in a structure called sarcomere, which mostly involves the presence of actin and myosin filaments.

For muscle contraction to happen, there needs to be a <u>stimulus coming from the nerve that innervates said muscle</u>. This stimulus generates the release of <u>calcium ions</u> that will bind to a protein called troponin and will lead to the exposure of the active site of actin so it can bind to the myosin head. <u>This process requires ATP</u>.

7 0
3 years ago
How do environmental conditions influence species survival?
velikii [3]

Answer: The threats of environmental changes to the fitness, survival and reproductive success of individuals, and ultimately to the survival of species and ecosystems come from many directions: habitat destruction, disruption of food chains, changes in disease and parasitic loads, increased pollution and direct and indirect

Explanation:

3 0
3 years ago
2. Which of the following describes the difference between nitrogen-14 and nitrogen-15? (1 point) Nitrogen-14 has 14 electrons,
lozanna [386]
The statement that describes the difference between the 2 isotopes of nitrogen would be the last set.

Nitrogen-14 has 7 electrons, 7 protons, and 7 neutrons

Nitrogen-15 has 7 electrons, 7 protons, and 8 neutrons.
4 0
2 years ago
Read 2 more answers
Societal regulations and laws may be developed or changed in response to scientific findings. Which type of scientific research
VMariaS [17]
Modeling and predicting what is bound to happen in the future using deduction of impossible possibilities
4 0
3 years ago
Your New Year's resolution is to drastically reduce the amount of cholesterol in your diet by eating less meat and more fruits a
grin007 [14]

After a few months of eating less meat and more fruits and vegetable, the liver will respond by producing more cholesterol.

<h3>What is body homeostasis?</h3>

The term body homeostasis makes reference to the internal equilibrium (homeostasis) of the body.

Body homeostasis may involve the production of certain substances when they are not consumed from the diet.

In this case, it is possible to increase cholesterol levels by having certain healthy habits (food habits).

Learn more about body homeostasis here:

brainly.com/question/13349261

7 0
2 years ago
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