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Sunny_sXe [5.5K]
3 years ago
12

Which of these options represents the correct flow of events during meiosis II?Select one of the options below as your answer:

Biology
2 answers:
alina1380 [7]3 years ago
6 0
Ing meiosis 2, chromosomes will line up and sister chromatids will be separated by the fibers.
The one that represents the correct flow of events during meiosis II would be : A. sister chromatids pulled to opposite poles, nucleoli form, cytokinesis

hope this helps
almond37 [142]3 years ago
3 0
The option that represents the correct flow of events during meiosis II is A) sister chromatids pulled to opposite poles, nucleoi form, cytokinesis.
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Using the sliding flament theory, explain (or draw) the process of sarcomere shortening. Start from the point where calcium woul
Arte-miy333 [17]

Answer:

  1. Calcium binds to troponin C
  2. Troponin T moves tropomyosin and unblocks the binding sites
  3. Myosin heads join to the actin forming cross-bridges
  4. ATP turns into ADP and inorganic phosphate and releases energy
  5. The energy is used to impulse myofilaments slide producing a power stroke
  6. ADP is released and a new ATP joins the myosin heads and breaks the bindings to the actin filament
  7. ATP splits into ADP and phosphate, and the energy produced is accumulated in the myosin heads, starting a new cycle
  8. Z-bands are pulled toward each other, shortening the sarcomere and the I-band, producing muscle fiber contraction.

Explanation:  

In rest, the tropomyosin inhibits the attraction strengths between myosin and actin filaments. Contraction initiates when an action potential depolarizes the inner portion of the muscle fiber. Calcium channels activate in the T tubules membrane, releasing <u>calcium into the sarcolemma.</u> At this point, tropomyosin is obstructing binding sites for myosin on the thin filament. When calcium binds to troponin C, troponin T alters the tropomyosin position by moving it and unblocking the binding sites. Myosin heads join to the uncovered actin-binding points forming cross-bridges, and while doing so, ATP turns 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. Finally, Z-bands are pulled toward each other, shortening the sarcomere and the I-band, producing muscle fiber contraction.

4 0
2 years ago
1. What is a correct way of naming an organism using the binomial system?
Paul [167]

Answer:

Question 1 :

Ans - C

Explain - Binomial system is made up of Genus (Capital letter) and species (small letter).

# order needs to be correct, <em>G</em><em>e</em><em>n</em><em>u</em><em>s</em><em> </em>

species

Question 2 :

Ans - B

Explain - Meat contain protein where enzymes break down protein into amino acids.

Question 3 :

Ans - B

Explain - Enzyme is a biological catalyst where they speed up chemical reaction.

6 0
2 years ago
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The antigens that are on the blood A antigens, B antigens and the Rh if it is a positive or negative
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3 years ago
Which of the following describes the variable that responds to change
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The Dependant Variable is the one responding to change.
Control Variables are controlled by you, and you influence the Independent Variables.

What do you mean by following?
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Match the properties with the subatomic particles.
frez [133]

Answer:

Explanation:

There are three  known subatomic particles: Electrons, Protons and Neutrons

    Electrons                                                  

  • It has a charge of -1
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  • it is found outside the nucleus

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  • It has a mass of 1
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  • It has no electrical charge
  • It has a mass of 1
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