1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zimovet [89]
3 years ago
6

Which of the following is acorrect definition for melting?

Biology
1 answer:
Ede4ka [16]3 years ago
6 0
D. melting is a phase change from a solid to liquid.
e.g ice melts
You might be interested in
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
Describe two adaptations of the saguaro cactus for water conservation
zubka84 [21]
Two adaptations of a saguaro cactus in order to store water are as following: 
1. large stems can store water.
2.thick waxy skin in order to reduce water loss through pores.
5 0
3 years ago
The youth movement originated with the ___ the generation born after ___
VLD [36.1K]
I believe that the youth movement originated with the baby boomers, the huge generation born after the world war II. By 1970, 58.2 % of the population in America was under the age of 35 years. The economic boom of the 1950s meant more families could afford to send their children to College. College life gave the young people a sense of freedom and independence. It was on college campuses across the nation that youth protest movements began and reached their peak. 
7 0
3 years ago
The adrenal medulla secretes epinephrine during sympathetic stimulation.
weeeeeb [17]

Answer:

u got to answer the question skskskskskssk

Explanation:

lol

6 0
3 years ago
Is a human white blood cell eukaryotic
Stels [109]
<span>If they have a nucleus, they are eukaryotic</span>
7 0
3 years ago
Other questions:
  • What fat are broken down to enter the respiratory system?
    8·1 answer
  • Earths outer layer if we consider physical properties and not chemistry is what
    7·1 answer
  • A 4-year-old child arrives at the clinic with his mother. The mother tells you that she recently moved in with her new boyfriend
    10·1 answer
  • What is evapotranspiration?
    14·2 answers
  • Two scientists do not agree on which type of grocery bag is better for the
    11·1 answer
  • A DNA strand with the sequence A-T-T-G-C-T would be complementary to which of the following? *
    12·1 answer
  • How can a child get a chromosome that is totally different from the original chromosomes of both parents
    8·1 answer
  • A natural source of carbon dioxide in our atmosphere​
    7·1 answer
  • PLEASE HELP HURRRY I need help with this
    12·1 answer
  • Do you think that carbon emissions from humans should be regulated? Why or Why not? Give at least five reasons to support your a
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!