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
Arte-miy333 [17]
3 years ago
6

What is this? i need help and i’m struggling thank you so much <3

Biology
1 answer:
Sliva [168]3 years ago
8 0

thats the plasma membrane. its the outside of a cell :)

hope that helped! <3

You might be interested in
Compare and contrast aerobic and anaerobic reactants
iogann1982 [59]

One of the similarities between aerobic and anaerobic respiration is that they both use glucose as the initial molecule, which is called the substrate. Moreover, both aerobic and anaerobic respiration produce Adenosine 5'-triphosphate (ATP), however, aerobic respiration produces more ATP compared to anaerobic respiration. Which actually means that glucose goes through dissimilar processes in anaerobic and aerobic respiration, therefore producing a different amount of ATP. Aerobic respiration uses oxygen and is only done when there is an abundant supply of oxygen. On the contrary, anaerobic respiration does not use oxygen, therefore it can be used even with a small supply of oxygen, hence we can still produce some ATP, for example when doing a strenuous exercise. Additionally, the products of both reactions are not the same. Aerobic respiration produces water and carbon dioxide from the reaction. On the other hand, anaerobic respiration produces lactic acid only, that can be harmful in large amounts, that is why it has to go to the liver once it has been produced so that it will be broken down.


3 0
3 years ago
Why do chromosomes condense at the start mitosis
Fynjy0 [20]
This condensation is needed to allow the chromosomes to move along the mitotic spindle without becoming tangled or broken during their distribution to daughter cells. DNA in this highly condensed state can no longer be transcribed, so all RNA synthesis stops during mitosis.
3 0
3 years ago
PLEASE HELP ASAP
erastovalidia [21]
Actually, large drops of rain form in a cumulonimbus cloud are stated by water vapor condensing in large quantity. If the humidity is very high, or around 100%, water droplets will form extra large during the condensation process. Additionally, this increases the size of the cloud. The droplets will amalgamate to form even larger rain drops that fall because of gravity. I hope this helps! :))

Ps. Cumulonimbus clouds also produce hail, but that hail is not the reason for why they produce big rain drops.
4 0
3 years ago
tall pea plants are dominant to short pea plants. A tall pea plants (TT) is crossed with a short pea plant(tt).
Lina20 [59]

Answer:

The offspring will be tall because itll have the dominant gene (Tt)

8 0
3 years ago
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
Other questions:
  • In biology, an adaptation is defined as _____.
    6·1 answer
  • What role do electron carrier molecules play in photosynthesis?
    14·1 answer
  • Clay particles are able to attract charged or polar organic molecules. Researchers have demonstrated that the concentration of o
    14·1 answer
  • What features would help a plant adapt to a tropical forest biome?
    7·2 answers
  • Which contains more calories, carbohydrates (like sugar in the apple) or fat? How do
    14·1 answer
  • Which factors affect the movement of ocean currents? Select the three
    14·1 answer
  • If one strand of DNA says ATTGAC what will it’s other strand say
    10·1 answer
  • 4a. By 40-60 years after farm fields had been abandoned, the amount of herbaceous plants
    13·1 answer
  • Which two features are present in a plant cell but not in an animal cell?
    8·1 answer
  • Shiga toxin kills cells by preventing protein synthesis. <br><br> a. true <br> b. false
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!