1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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

You might be interested in
22. A plant geneticist is investigating the inheritance of genes for bitter taste (Su) and explosive rind (e) in watermelon (Cit
mylen [45]

Answer:

See the answer below

Explanation:

Using the formula for calculating Chi square (X^2):

X^2  =  \frac{(O - E)^2}{E} where O = observed frequency and E = expected frequency.

The observed frequencies for the four phenotypes are 88, 62, 62, and 81 respectively.

For the expected frequency, the phenotypes are supposed to assort in 9:3:3:1 according to Mendel ratio.

Hence, expected frequencies are calculated as:

phenotype (1) = 9/16 x 293 = 164.81

phenotype (2) = 3/16 x 293 = 54.94

phenotype (3) = 3/16 x 293 = 54.94

phenotype (4) = 1/16 x 293 = 18.31

The X^2 is calculated thus:

Phenotype            O               E                             X^2

  1                          88            164.81            \frac{(88 - 164.81)^2}{164.81} = 35.80

  2                          62             54.94            \frac{(62 - 54.94)^2}{54.94} = 0.91

  3                           62             54.94              \frac{(62 - 54.94)^2}{54.94} = 0.91

  4                            81              18.31               \frac{(81 - 18.31)^2}{18.31} = 214.64

Total X^2 = 35.80 + 0.91 + 0.91 + 214.64 = 252.26

To the nearest tenth = 252

Degree of freedom = n - 1 = 4- 1 = 3

X^2 tabulated  = 7.815

<em>The calculated </em>X^2<em> exceeds the critical value, hence, the null hypothesis is rejected. The two genes did not assort independently.        </em>

4 0
2 years ago
Under the leadership of Mikhail Gorbachev, the doctrine of perestroika called for which of the following?
andreev551 [17]
Under the leadership of Mikhail Gorbachev, the doctrine of perestroika called for "<span>A. Openness in communication", since the "closed off" Soviet Tactics of the past were clearly not working by the 1980s.</span>
5 0
3 years ago
If Huntington's disease is due to a dominant trait, shouldn't three-fourths of the population have Huntington's while one-fourth
expeople1 [14]
Well if you look at the cold hard fcats of it all 
5 0
3 years ago
Read 2 more answers
What must happen for the lungs to expand allowing you to inhale
malfutka [58]
Ur intercostle muscle between ur ribs
3 0
3 years ago
In which situation would artificial insemination most likely be used
zhenek [66]
Ok here I go The answer is A
5 0
2 years ago
Other questions:
  • According to the cell theory, which describes cells?
    10·2 answers
  • Which reproductive cell cycle produces gametes
    14·2 answers
  • An aquifer has been compared to a sponge. Think about this analogy for a moment explain why the use of the word quotations “spon
    11·1 answer
  • Why is personal hygiene important for limiting the spread of diseases?
    6·1 answer
  • What is the source of continuous heat and energy that we receive from the sun? Fill in the blank please
    15·1 answer
  • What type of cell, once it enters the tissues, is converted into a macrophage that attacks invaders by phagocytosis?
    6·1 answer
  • Which are examples of long-term environmental change? Check all that apply.
    14·1 answer
  • Oxygen was into ally created in earths atmosphere by___.
    8·2 answers
  • Is Decomposition a fast change that happens in an ecosystem?<br><br> (true or false)
    9·1 answer
  • What evidence is supporting the benefits of stem cell research​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!