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bixtya [17]
3 years ago
5

A teacher is peeling an orange at the front of a classroom. Which of these

Biology
1 answer:
Alchen [17]3 years ago
8 0
Peeling another orange, this would release more orange molecules in the air than the other answer choices
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The convection that causes Earth's magnetic field happens in Earth's _____.
adelina 88 [10]
The answer is the outer core. 

The outer core of the Earth is made up of liquid metal. The liquid in the outer core pass through the magnetic field and this causes the flow of electric current with in it. The magnetic field gets stronger as the liquid metal passes through it. What makes the liquid metal move is the inner core. It heats up the outer core which triggers convection. 
6 0
3 years ago
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Helppp I don’t know the answers and need to know as soon as possible
jok3333 [9.3K]

Answer:

A) central nervous system

B) Peripheral nervous system

4 0
3 years ago
During the cross-bridge cycle in muscle cells, myosin motors hydrolyze ATP as fuel to create a pulling force on actin fibers. Pl
exis [7]

Answer and 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, tropomyosin is obstructing binding sites for myosin on the thin filament. 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 released. Myofilaments slide impulsed by chemical energy collected in myosin heads, producing a power stroke. 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.

7 0
3 years ago
What is not an example of energy in the transformations in an ecosystem
Yakvenalex [24]
What are my choices?
8 0
3 years ago
You call an exterminator to your house because you have noticed many nymphs of a specific insect everywhere in your cupboards. T
brilliants [131]

Answer:

The correct answer is - option C.

Explanation:

The case in this the biological exterminators asks to use the biological concept which includes spraying the solution of the juvenile hormone to get rid of nymphs of specific insect and according to the assumption, this solution causes some alteration on the ability to reproduce of such nymphs and leads to only nonreproductive ones.

On the given condition the increasing of nymphs, the number of adult nymphs or decreasing of nymphs can not be condition and as the reproductive ability is affected the number of nymphs would be the same.

Thus, the correct answer would be - option C.

7 0
3 years ago
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