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3 years ago

Often,

Biology

1 answer:

telo118 [61]3 years ago

8 0

<h3>Cofactors</h3>

Explanation:

Enzymes are biochemicals which catalyze a biochemical reaction taking place in the body by reducing the activation energy barriers and changing the substrate molecules to products.

The active sites of enzymes first binds to the substrate and forms an enzyme-substrate complex.

An enzyme can work actively only with the help of helper molecules called co-factors and co-enzymes.

Co-factors are non-protein inorganic ions like iron, magnesium which helps the catalyze chemical reactions.

Cofactors are bound tightly with the active sites of the enzymes and also contribute for the structural integrity and stability of the enzyme

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One particular feature found in bony fishes but is absent in cartilaginous fishes:

ioda

A Swim Bladder is not present in cartilaginous fishes. Also called a fish maw or gas bladder the swim bladder is a gas-filled bladder that allows many bony fish to control their buoyancy by filling or releasing gas form the bladder. This allows them to change bouyancy without wasting metabolic energy by swimming.

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4 years ago

Mitochondrial dna (mtdna) recovered from a fossil hominin from sima de los huesos in northern spain shows connections to the mtd

Fofino [41]

Mitochondrial DNA (mtdna) recovered from a fossil hominin from sima de los huesos in northern spain shows connections to the mtdna of the Denisovans.

The Sima de los Huesos showed distinctive proof of DNA survival over an extended period of time. Based on the enzymatic amplification of a few short mitochondrial DNA (mtDNA) fragments from Middle Pleistocene cave bear bones. Given that the Sima de los Huesos fossils have Neanderthal-derived characteristics (such as in their dental, mandibular, midfacial, supraorbital, and occipital morphology), it is unexpected that the mtDNA from these fossils has a common origin with Denisovan rather than Neanderthal mtDNAs.

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2 years ago

Rocks that differ greatly from their parent rock have what characteristic? A. Small crystals B. A high density C. A high metamor

kifflom [539]

Answer:A

Explanation:

Since it doesn’t carry the same exact gene from the parent. It would have High metamorphic grade. Hope this helped

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2 years ago

Arrange the phases of mitosis in the correct order.

JulsSmile [24]

1. Chromosome condense (Prophase)
2. Spindle fibers form (Prophase)
3. Chromosomes allign in the center of the cell (Metaphase)
4. Chromosomes separate (Anaphase)
5. Cell membrane pinches (Telophase and Cytokenesis)
6. Spindle fibers disappear (Conclusion of Cytokenesis)

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3 years ago

Read 2 more answers

When your cells use fat for energy, the fatty acids are broken up into molecules of acetyl COA. Predict how many ATP can be made

IgorC [24]

Answer:

12 molecules of ATP can be made from one molecule of acetyl CoA.

Explanation:

If one molecule of acetyl CoA enter TCA cycle then it result in the formation of 3 molecules of NADH,1 molecule of FADH2 and 1 molecule of GTP that is equivalent to 1 molecule of ATP.

Now the reducing equivalent such as NADH and FADH2 enters electron transport chain and get oxidized to regenerate NAD+ and FAD along with ATP. 1 molecule of NADH produces 3 molecules of ATP whereas 1 molecule of FADH2 produces 2 molecules of ATP.

So that net gain of ATP is given below

3 molecules of NADH = 9 molecules of ATP

1 molecule of FADH2 =2 molecules of ATP

1 molecule of GTP = 1 molecule of ATP

As a result total 12 molecules of ATP is by the oxidation of 1 Acetyl CoA by TCA cycle .

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3 years ago