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jeyben [28]
3 years ago
5

What do fossils provide evidence for?

Biology
1 answer:
Gemiola [76]3 years ago
3 0

Answer:

A

Explanation:

it provides insight to what animals existed in the past, ecosystems and adaptations of currently existing species

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What are the steps in filament theory
Inessa [10]

Answer and Explanation:

The steps of the sliding filament theory are:

Muscle activation: breakdown of energy (ATP) by myosin.

Before contraction begins, myosin is only associated with a molecule of energy (ATP), which myosin breaks down into its component molecules (ADP + P) causing myosin to change shape.

Muscle contraction: cross-bridge formation

The shape change allows myosin to bind an adjacent actin, creating a cross-bridge.

Recharging: power (pulling) stroke

The cross-bridge formation causes myosin to release ADP+P, change shape, and to pull (slide) actin closer to the center of the myosin molecule.

Relaxaction: cross-bridge detachment

The completion of the pulling stroke further changes the shape of myosin. This allows myosin and ATP to bind, which causes myosin to release actin, destroying the cross-bridge. The cycle is now ready to begin again.

The repeated cycling through these steps generates force (i.e., step 2: cross-bridge formation) and changes in muscle length (i.e., step 3: power stroke), which are necessary to muscle contraction.

7 0
3 years ago
The term osmolarity has been used to describe the total solute concentration of a solution (generally water), where 1 osmole (Os
arsen [322]

Answer:

osmolarity depends upon molarity.

glucose is a non-ionizing substance. it won't break down and will go as a whole.

osmolarity means the solute concentration of a solution.

here, the solvent is water.

therefore, 1 osmole = 1 mol

the ions of glucose after forming a solution (i) = 1

osmolarity = 1.5 M glucose × 1

                   = 1.5 osmoles of glucose.

7 0
3 years ago
Misspelling a word is like _______ in a gene.
Sveta_85 [38]

Answer:mutation

Explanation:

8 0
3 years ago
Gle
kari74 [83]
B.



Just b

That’s it it’s b
3 0
3 years ago
Maltase is an enzyme that breaks down the disaccharide maltose into glucose molecules. The reaction usually takes place at a pH
nekit [7.7K]
I think the correct answer from the choices listed above is option A. If the reaction of maltase is optimum at the pH range of 6 to 7, then most likely when the ph is decreased into three maltase would not be able to function outside of its optimal pH range. Hope this answers the question.
6 0
3 years ago
Read 2 more answers
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