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m_a_m_a [10]
3 years ago
11

8. Describe a cell which effectively uses diffusion as a means to move materials in and out.

Biology
1 answer:
frutty [35]3 years ago
5 0
The alveolus in the human body.
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a comet is cruising through the solar system at a speed of 50,000 kilometers per hour for 4 hours time what is the total distanc
xeze [42]

50,000 x 4 = 200,000

7 0
3 years ago
1. Summarize the six ways the loss of Arctic ice is affecting everyone.
Morgarella [4.7K]

Answer:

Explanation:

Artic Ice are melting due to change in the climatic system as a result of global warming. The active increase in human activity resulting in global warming will continually perpetuate the decrease in artic Ice.

Artic heat help to balance temperature or heat on the earth surface by reflecting heat back into the environment. When the artic Ice is reduced, the amount of heat reflected is also reduces.

Coastal community - a continuous rise in ocean level can lead to flooding which will affect the coastal community surrounding the ocean. An the ocean has been incredible gradually over the pass decades.

Food - Reduction in the artic Ice car Lea to increase heat affect crop growth through damage by heat stresses leading to an increase price rate of food.

Meltng of Ice increase the shipping routes causing more harm through ship wrek.

Melting of Ice can leave to loss of animals that depends on it for survival.

Permafrost occurs when the ground is permanently block or frozen leading to accumulation of methane gases that causes global warming.

6 0
4 years ago
A lot of the solar energy that reaches Earth hits the____________.
Ludmilka [50]

Answer:

C.Equator

Explanation:

idk ...lel

3 0
3 years ago
Read 2 more answers
Greatest discoveries with bill nye: genetics 1. ___________________ was an austrian monk that studied genetics.
notka56 [123]
Gregor Mendel was an austrian monk that studied genetics..And he is known as the "father of modern genetics"...
4 0
4 years ago
Identify the correct sequence of the following events. a. Myosin generates a power stroke. b. Ca++ binds to troponin. c. ATP rec
balandron [24]

Answer:

Ca+ binds to troponin

Troponin removes tropomyosin from G actin

Myosin binds to actin

Myosin generates a power stroke

The sarcomere shortens

ATP recharges the myosin head

Explanation:

Contraction begins with the release of calcium ions into sarcoplasm where they bind to troponin. It moves the tropomyosin always from the myosin-binding sites present on actin. Myosin head binds to actin and forms cross-bridge followed by power stroke in which myosin head pivots to pull the thin filament past the thick filament towards the center of the sarcomere and results in shortening of the sarcomere. The myosin head binds to ATP and the cross-bridge detaches from actin. Hydrolysis of ATP charges myosin head again.

8 0
3 years ago
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