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3 years ago

How many protons does an element have?

2 answers:

3 0

This is determined by its atomic number. The atomic number of an element determines its protons. So for example....

The atomic number of Boron is 5, therefore....the protons are 5.

scoray [572]3 years ago

3 0

Answer:

The number of protons is same as like that of atomic number of the atom in an element. The protons of the element carry positive charge and the electrons carry negative charge.

The number of electrons in an atom is equal to the number of protons. The element can be defined as a substance that have the same number protons.

Elements are chemically the simplest substance which cannot be further broken down using any of the chemical reactions.

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Candace is wanting to be sure that she is doing what she can to prevent the spread of disease. Which of the following should she

Alex

Answer: She should Avoid Contact with other people's bodily fluids.

Explanation: Hope that helps! (:

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3 years ago

Life on earth began as the product of chemical reactions which occurred

Kazeer [188]

Answer: Over 4 billion years ago

Explanation: The chemical reactions between carbon and water is said to bring about life according to scientists. These reactions builds largely upon four families of chemicals (lipids, carbohydrates, amino acids, and nucleic acids).

However, the actual time of life on Earth has varying speculations from different scientists in fields of study (such as molecular biology, chemistry, oceanography, etc).

Furthermore, microfossils within hydrothermal-vent precipitates dated from 3.77 to 4.28 billion years is presumed to inhabit the oldest record of life on Earth. Hence, which is presumed to have occurred after ocean formation 4.4billion years ago.

Thus, the actual date of the chemical reactions that brought about life is not rigid, but presumed to have occurred over 4billion years ago (according to research).

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3 years ago

Bacteria in your intestines are an example of mutualism if they

Fofino [41]

Answer: if they help you break down food

Explanation:

Mutualism is a biological relationship between TWO or more organisms of different species (inter-specie) in which one or more benefits.

A good example is bacteria in the human intestine that helps to break down cellulose contained in food, thus benefitting humans.

3 0

3 years ago

Insects may be preserved in the hardened sap of trees called

zhenek [66]

A. Amber, because in the Prehistoric times the insects and small dinosaurs fell into amber and became preserved in the hardened sap.

8 0

3 years ago

Read 2 more answers

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.

7 0

2 years ago