An example of a physical change during ___ is when teeth are crushing and cutting food into smaller pieces.

1 answer:

8 0

The blank should be digestion (process).

The action of cutting food into smaller pieces with teeth is a physical change/digestion, because this action does not involve enzymes, which are necessary for chemical digestion, examples are such as turning starch to Maltose.

The action of cutting and crushing food can increase the surface area, so that it can speed up the chemical digestion later on and provide the most nutrients for the body.

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nergy used by the body to perform muscular contractions is called adenosine diphosphate, or ADP.TrueFalse

olga2289 [7]

The answer is false.

Energy used by the body to perform muscular contractions and many other energy-required functions is adenosine triphosphate or ATP.

The most important function of ATP is its ability to store and transport chemical energy within cells. That energy can be used for many chemical processes such as muscle contraction, nerve impulse propagation, chemical synthesis.. When consumed in metabolic processes as an energy source, it becomes converted either to adenosine diphosphate (ADP) or to adenosine monophosphate (AMP) because one or two phosphate groups are released (hydrolysis of high-energy bonds).

Since ATP is a nucleoside triphosphate it can be used for the synthesis of nucleic acids.

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17. When transcription occurs in eukaryotic cells, a DNA strand is copied to an mRNA strand that contains introns and exons. Whi

scoundrel [369]

Answer:

Exons because they are coding sequences

Explanation:

The sections of DNA (or RNA) that code for proteins are called exons.

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Como podemos trasladar una caja de 50 kg desde planta baja hata un primer piso que presenta una inclinacion de 40º que tipo de m

avanturin [10]

Answer:

Explanation:

We can easily move the box from a ground floor though to the first floor at an angle of 40° to the horizontal by simply pushing the load through an inclined plane. We will simply be lean the inclined plane on the building at the required angle and the push through the the height of the building.

Based on the explanation above, the best type of simple machine to use is an INCLINED PLANE. Note that the essence of using a machine is simply to make our work easier and faster and also be able to overcome a much larger load with a minimal effort.

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3 years ago

What

mafiozo [28]

I think the veins absorb the photons because they're located at the top part of a leaf while the stomata that serves as the leaf's lungs are found at the under side.

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Silent or missense mutations are small-scale mutations that occur when

Andrei [34K]

Answer:

c. a single nucleotide is substituted with no effect

on the amino acid sequence.

Explanation:

silent mutations occur when the change of the dna

sequence within protein - coding portion of a gene

does not affect the sequence of amino acids that

make up the protein. this change typically takes

place at the third position of the codon also known

as the wobble position.

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2 years ago