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noname [10]
3 years ago
10

2. The mass of the nucleus is closest to A. 99% of that in the entire atom B. 1% of that in the atom C. 10–5 of that in the atom

D. 10–15 of that in the atom
Biology
1 answer:
Tanzania [10]3 years ago
3 0

Answer: Option A) 99% of that in the entire atom

Explanation:

An atom consists of three subatomic particles named protons, neutrons and electrons. The protons and neutrons are found in the nucleus of the atom, while the mass of electrons is 1/1840 (negligible).

Thus, the mass of protons and neutrons in the nucleus makes 99% of the entire atom

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4. DNA typing was first described in 1985 by English geneticist
irga5000 [103]

Answer:

2. Alec Jeffreys

Explanation:

'DNA fingerprinting' or DNA typing (profiling) as it is now known, was first described in 1985 by an English geneticist named Alec Jeffreys. Dr. Jeffreys found that certain regions of DNA contained DNA sequences that were repeated over and over again next to each other.

3 0
3 years ago
what will happen if one of the levels in the biological organization will not perform its function properly?​
Sedaia [141]

Answer:

It would affect the functionality of the other levels including the organism

Explanation:

The level of biological organization is a hierarchical step consisting of how a multicellular organism forms. According to this level of organization, CELLS are the simplest unit of life and the collection of cells with a similar function is termed TISSUE. Tissues form ORGANS, organs form ORGAN SYSTEMS and finally, a collection of all the systems in the body forms the ORGANISM.

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7 0
3 years ago
The ____________ functions as a gateway through which chemicals and small particles, such as ____________ enter or leave the cel
Vilka [71]

Answer: cell membrane

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physical process

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such as soduim-potassium pump, exocytosis

Explanation:  transportation in and out of cell is done in different ways listed above but a barrier to this movement is the cell membrane which is an outer covering of the cell. it protect the cell and only some materials can penetrate the cell membrane e.g micro-organism, water e.t.c. the various physical and physiological processes are the various ways substance  cna be liquid, solid or gas are transported within or outside the  cell e.g food

6 0
3 years ago
HELP WILL MARK YOU BRAINLIEST use your own words!!!
Umnica [9.8K]

Answer:

Dependant Chickens Eating,

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Line graph because it displays a single point of info over time.

Explanation:

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3 years ago
Who be the best defensive player in the NFL?​
LenaWriter [7]

Answer: tom brady

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3 years ago
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