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Bas_tet [7]
3 years ago
6

Paragraph 2. In an atomic model, what particles are found inside the nucleus of an atom?

Biology
1 answer:
Vitek1552 [10]3 years ago
7 0

Answer:

The protons and the neutrons are found in the nucleus of an atom.

Explanation:

Atoms are best described as the smallest unit of any matter.

Protons can be described as part of an atom which carries a positive charge. The protons are enclosed in the nucleus of the atom.

The neutron is the part of the atom that carries zero charge. The neutron is also enclosed in the nucleus of the atom.

The electrons can be described as the part of an atom that carries a negative charge. The electrons move around the nucleus in orbits.

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Hydrogen bonds give water which of the following properties? 1. high pH low pH the ability to resist temperature changes 2. the
Furkat [3]

Answer:

3. into ice, which is denser than liquid water.

Explanation:

Water molecules are held together by hydrogen bonds. The bonding is usually between the hydrogen atoms of one water molecules, and oxygen atom of neighboring  water molecules. Structurally,  both oxygen and  hydrogen atoms  pulls the electon towards themselves.Thus both atoms share   electron by covalent bonding.

However, because oxygen  has a strong positively charged nucleus it pulls the electron more to itself than oxygen. Thus oxygen is partially negative and oxygen is partially positive. This interactions take place among  all the oxygen and hydrogen atoms in water molecules. . The unequal charge distributions is called dipole and the attraction between oxygen and hydrogen is called  hydrogen bonding .

The  orientation of hydrogen and oxygen molecules from dipole -dipole  interactions of hydrogen bonding makes the  oxygen and hydrogen atoms in ice to be pushed apart well spaced out in ice, making them less dense than liquid  water  where they were aggregated.  Thus from the question option C is correct.

4 0
3 years ago
how does the random alignment of homologous chromosomes contribute to genetic variation in a population
SCORPION-xisa [38]

The assortment of homologous chromosomes during meiosis is random and generates genetic variation, the raw material for evolution.

During metaphase I of meiosis, homologous chromosomes are lined up at the equator plate of the cell in order to be separated (assorted) in anaphase I.

The separation of homologous chromosomes during meiosis I is random. Daughter cells receive unique gene combinations from an original parent cell.

Subsequently, haploid cells got from two successive meiotic divisions fuse during fecundation to form a diploid (2n) zygote.

During prophase I, non-sister chromatids interchange genetic material by a process known as recombination. This genetic process also increases genetic variation in daughter cells.

In conclusion, the assortment of homologous chromosomes during meiosis is random and generates genetic variation.

8 0
3 years ago
Which best describes the pericardium?
hammer [34]
Pericardium is a membrane that surrounds the heart and the roots of the blood vessels. It is composed of two layers: the serous layer and the fibrous layer.

The Pericardium keeps the heart in place and in proper working order. Any disorders that occurs in the pericardium will also affect how the heart works. 

Inflammation of the pericardium may be a result of infection, heart attack, heart surgery, and other medical side effects. 
5 0
3 years ago
15 Points
Lena [83]
Plates slid past each other
4 0
3 years ago
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What would happen to an organism if its cell membranes became permeable to most substance
Hatshy [7]
A) It would die as harmful substances entered the cell
5 0
3 years ago
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