FORENSIC SCIENCE!

Biology

1 answer:

Mademuasel [1]3 years ago

7 0

Answer: the carpet padding

Explanation:

Individual evidences are simply refered to as properties of physical evidence that has to a high degree of certainty for a common source. For individual evidences, the suspect is being narrowed down to a single individual. Examples include fingerprints, toolmarks etc.

In the question above, the example of individual evidence when it comes to carpet will be the carpet padding. While other options such as fiber length, dye composition and the type of fiber can still relate to other things, carpet padding narrows it down to carpet.

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Random thought, should fingers have FINGERS?

Bad White [126]

B). Brainly said I’m wrong when I tried submitting it

3 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:

Calcium binds to troponin C
Troponin T moves tropomyosin and unblocks the binding sites
Myosin heads join to the actin forming cross-bridges
ATP turns into ADP and inorganic phosphate and releases energy
The energy is used to impulse myofilaments slide producing a power stroke
ADP is released and a new ATP joins the myosin heads and breaks the bindings to the actin filament
ATP splits into ADP and phosphate, and the energy produced is accumulated in the myosin heads, starting a new cycle
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.