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stich3 [128]
2 years ago
13

What percentage of ticks carry lyme disease?.

Biology
1 answer:
arsen [322]2 years ago
7 0

Answer: <u>Ticks infected with it range from 1% to 50%. While most tick bites are innocuous, some species can carry diseases that are fatal.</u>

Explanation:

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Aerobic and anaerobic respiration each have advantages under specific conditions. Aerobic respiration produces far more ATP, but risks exposure to oxygen toxicity. Anaerobic respiration is less energy-efficient, but allows survival in habitats which lack oxygen.
Within the human body, both aerobic and anaerobic respiration are important.
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3 years ago
Which of the following statements is correct in a low pressure system?
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Answer:

A. is correct

Explanation:

Low-pressure systems are associated with volatile weather conditions like clouds and rain. This is exactly what A says. Hope this helps :)

8 0
3 years ago
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What is the name of the area around a charged object where the object can exert a force on other charged objects?
dolphi86 [110]
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2 years ago
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When a muscle cell contracts, Group of answer choices the position of each myosin head is identical at any given moment. some my
White raven [17]

Answer:

When a muscle cell contracts, the myosin heads each produce a single power stroke.

Explanation:

In rest, attraction strengths between myosin and actin filaments are inhibited by the tropomyosin. When the muscle fiber membrane depolarizes, the action potential caused by this depolarization enters the t-tubules depolarizing the inner portion of the muscle fiber. This activates calcium channels in the T tubules membrane and releases calcium into the sarcolemma. At this point, <em>tropomyosin is obstructing binding sites for myosin on the thin filament</em>. When calcium binds to the troponin C, the troponin T alters the tropomyosin by moving it and then unblocks the binding sites. Myosin heads bind to the uncovered actin-binding sites forming cross-bridges, and while doing it ATP is transformed into ADP and inorganic phosphate which is liberated. Myofilaments slide impulsed by chemical energy collected in myosin heads, <u>producing a power stroke</u>. The power stroke initiates when the myosin cross-bridge binds to actin. As they slide, ADP molecules are released. A new ATP links to myosin heads and breaks the bindings to the actin filament.  Then ATP splits into ADP and phosphate, and the energy produced is accumulated in the myosin heads, which starts a new binding cycle to actin.  Z-bands are then pulled toward each other, thus shortening the sarcomere and the I-band, and producing muscle fiber contraction.

3 0
3 years ago
Which products result from carbohydrate metabolism?
a_sh-v [17]

Answer:

pyruvate and acetyl-CoA

Explanation:

The first step of respiration reactions is glycolysis. When glucose is broken down in glycolysis, the first molecule that is produced is pyruvate. If pyruvate continue to aerobic respiration, it must enter the matrix of mitochondria and be oxidised to Acetly Co-A.

6 0
3 years ago
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