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3 years ago

In the atom, which particles are in constant motion around the nucleus?

Biology

1 answer:

scoundrel [369]3 years ago

5 0

Answer:

Electrons

Explanation:

According to the modern atomic theory, atoms are made-up of smaller subatomic particles in the nucleus. The nucleus contains two types of subatomic particles, protons and neutrons. The protons have a positively electrical charge and the neutrons have no charge. The electrons have a negative electrical charge and are able to move around the nucleus. An atom usually contains an equal number of positively charged protons and negatively charged electrons. This makes the atom itself electrically neutral. The electrons exist at different energy levels, called shells, around the nucleus where they revolve freely in a constant motion.

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Which one of the following statements is not correct? A. Over a week-long period, if a healthy person were to ingest 35 g of NaC

baherus [9]

Answer:

The option D is incorrect.

Explanation:

It is not necessary that the substance needs to get filtered out of the glomerulus to be present within the urine. Some of the substances may be present in the urine due to the secretion in the renal tubules post the filtration process in the glomerulus.

Like in the proximal tubule of the nephron, secretion results in the transport of some of the molecules out of the blood and within the urine. These secreted substances can be hydrogen ions, potassium ions, creatinine ions, and some kinds of waste components like drugs.

The conduction of substances from peritubular capillaries to the renal tubular lumen is termed as tubular secretion, and the process generally takes place by passive diffusion and active transport.

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3 years ago

Each of the following statements describes a type of column chromatography. Sort the statements to the type of chromatography th

horsena [70]

Answer:

Explanation:

Separate molecules by size. > All

Separate molecules by charge. > Ion-exchange Chromatography, Affinity Chromatography

The stationary phase has a covalently bound group to which a protein in the mobile phase can bind. > All

Uses a mobile phase and a stationary phase to separate proteins. > All

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Can separate molecules based on protein-ligand binding. > Affinity Chromatography

The stationary phase may contain negatively or positively charged groups. > Ion-exchange Chromatography, Affinity Chromatography

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3 years ago

Toward what condition does diffusion eventually lead, in the absence of other influences ?

Dmitry [639]

Diffusion will continue until a condition of equilibrium<span> will be reached. Ions or Molecules are equally balanced on both sides or a permeable membrane.</span>

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4 years ago

At which checkpoint should the drug interrupt the cell cycle to keep DNA from replicating?

Fiesta28 [93]

Answer:

i am 80% sure that the answer is B

Explanation:

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3 years ago

Read 2 more answers

What are 6 layers of the earth?

fredd [130]

Answer:

Crust, mantle, core, lithosphere, asthenosphere, mesosphere, outer core, inner core.

Explanation:

subdivide the Earth based on rheology, we see the lithosphere, asthenosphere, mesosphere, outer core, and inner core. However, if we differentiate the layers based on chemical variations, we lump the layers into crust, mantle, outer core, and inner core

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3 years ago