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denis23 [38]
3 years ago
15

HELP PLEASE AN EXAM PLEASE HELP

Biology
1 answer:
ki77a [65]3 years ago
6 0


For example, carbon has six protons and is atomic number 6. Carbon occurs naturally in three isotopes: carbon 12, which has 6 neutrons (plus 6 protons equals 12), carbon 13, which has 7 neutrons, and carbon 14, which has 8 neutrons. All three have six protons, but their neutron numbers - 6, 7, and 8, respectively - all differ. This means that all three isotopes have different atomic masses (carbon-14 being the heaviest), but share the same atomic number (Z=6).

ANSWER : Carbon 14 (hope this helps!)
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Which three of the following best describe what would happen if mitosis did not take place?
vaieri [72.5K]

Mitosis refers to the procedure of cell division, in which a cell goes through a carefully mediated nuclear division, which results in the production of two genetically similar daughter cells. The mitosis comprises five active stages, that is, prophase, premetaphase, metaphase, anaphase, and telophase.  

In a single-celled species like an amoeba, it is the process of mitosis by which the cells reproduce. After undergoing through the five stages of mitosis, it is via the procedure called cytokinesis, the single cell dissociates into two similar cells, thus, completing the reproduction.  

During injury, the process of mitosis takes place to substitute the damaged cells. This repair is mainly essential for the blood vessels and skin that safeguards the organs and muscles in the body. Mitosis also assists to substitute the lost blood via a wound.  

Thus, if the process of mitosis would not take place, then the organism would remain a single-cell, asexual reproduction would not take place, and the tissues of the body would not be able to repair themselves.  


4 0
3 years ago
(100 pts.) Please explain the following in detail:
Svetlanka [38]

Answer:

1. interphase is the portion of the cell cycle that is not accompanied by gross changes under the microscope while phases is a distinct period or stage in a series of events or a process of change our development.

6 0
2 years ago
Coat color in cats is a codominant trait and is also located on the X chromosome. Cats can be black, orange or calico. A calico
adell [148]

Answer:

The males can only either be black or orange

Explanation:

There can be no male calico because for an offspring to be a calico the two codominant alleles must each be carried on the two X chromosomes and in the males, there is the presence of just one X chromosomes, thus they can either be black or be orange. For the females, the can only be black if they carry the black allele on both X chromosomes, the same goes for the orange.

Parents                          XB            Y

    XB                          XBXB        <u>XBY</u>

    XC                          XCXB       <u> XCY </u>      

XBY- black male

XCY- orange male          

7 0
3 years ago
A cell whose cytoplasm has a concentration of 0.02 mo lar glucose is placed in a test tube of water containing 0.02 molar glucos
ahrayia [7]

Answer:

<u>Isotonic</u>

Explanation:

If the solute concentration of the cell and that of its surrounding medium are the same there will be no net flow of water in either directions. In this case, the external solution is said to be isotonic to the cell.

Both the cytoplasm concentration and the glucose in the test tube are the same.

8 0
3 years ago
Part A - Independent assortment of three genes A wild-type tomato plant (Plant 1) is homozygous dominant for three traits: solid
Effectus [21]
<h2>Law of independent assortment </h2>

Explanation:

  • There are 8 distinct phenotypes, each one has a 12,5% of appearance: Since M=solid leaves D=normal height P= smooth skin.
  • Recessive gene characters can only be taken in homozygous recessive mmddpp.  

      1. MmDdPp: M=solid leaves D=normal height P= smooth skin.

     2. MmDdpp M=solid leaves D=normal height pp= peach skin.

    3. MmddPp M=solid leaves dd=dwarf height P= smooth skin.  

    4. Mmddpp M=solid leaves dd=dwarf height pp= peach skin.

    5. mmDdPp mm=mottled leaves D=normal height P= smooth skin.  

    6. mmDdpp mm=mottled leaves D=normal height pp= peach skin.  

    7. mmddPp mm=mottled leaves dd=dwarf height P= smooth skin.  

   8. mmddpp mm=mottled leaves dd=dwarf height pp= peach skin.

Hence,The answer is all eight possible phenotypes from the cross MmDdPp x mmddpp are equally likely, resulting in a phenotypic ratio of 1:1:1:1:1:1:1:1

3 0
4 years ago
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