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skelet666 [1.2K]
1 year ago
12

Although both br3- and i3- ions are known, the f3- ion has not been observed. explain.

Biology
1 answer:
Sliva [168]1 year ago
4 0
Fluorine, iodine and bromine are all in the same group. Fluorine been the first element in the group has less number of electron orbitals compare with bromine and iodine. Bromine and iodine has D orbitals which can take part in their bonding activities, this allows the elements to bond in a variety of ways, but fluorine does not have the D orbital and therefore is limited in its ion formation. <span />
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Which of the following is the correct sequence, going from simplest to most complex, in the levels of structural organization of
Bas_tet [7]

Answer:

The correct answer is option A.

Explanation:

Cellular organization is one of the characteristics of life that states that each living organism is made up cell or more than one cell, that is made up by organization of various components such as chemicals like micro molecule that form the macro molecule and these chemical level structural organization is formed together to make cells and this level of organization makes the tissue which is complex to cell but simpler to organ that is makeup of various together.

The makeup of organs is necessary as organs are the structural level that individuals facilitate the function and make up the organ system that is a complex system made up of organs that are similar in their function. The organism is the most complex of all levels.

Thus, the correct answer is option A.

7 0
1 year ago
Check your understanding
wel

The fraction of offspring with black coat color and straight fur is 9/16.

Explanation:

Information given:

black coat colour and straight fur - dominant genotype BBCC, BbCc

yellow coat colour and curly fur - recessive genotype  bbcc

Both the traits are independently assorted. The fur colour and fur type is not present on the same chromosome and are not sex linked.

The genotype of the parents are:

BbCc X BbCc

Punnet square shows:

          BC           Bc          bC        bc

BC  BBCC   BBCc        BbCC   BbCc

Bc  BBCc   BBcc          BbCc    Bbcc

bC BbCC    BbCc         bbCC   bbCc

bc  BbCc      Bbcc         bbCc    bbcc

9 BLACK STRAIGHT

 3 BLACK CURLY

 3 YELLOW STRAIGHT

  1  YELLOW CURLY

9/16 is the fraction of progeny to be black coat colour and straight fur.

5 0
1 year ago
Studies of the endomembrane system often involve the use of a protein that can emit a green fluorescence (glow). A researcher wa
telo118 [61]

Answer:

The correct answers are: Ribosome, Mitochondria, Chloroplast (in case of a plant cell).

Explanation:

  • The Endo-membrane system in the cell represents the membranes of the Nucleus, Endoplasmic Reticulum, Golgi apparatus, Plasma Membrane, Vacuole and Lysosome.
  • The Nuclear Envelope is made up of a phospholipid bilayer which remains in continuation with the ER (endoplasmic reticulum) membrane.
  • Therefore, fluorescent tagged integral membrane protein localised in the outer nuclear envelope can move into the ER membrane by lateral movement or through vesicles that bud off from the membrane of the nuclear envelope and fuse with that of the ER membrane.
  • Vesicles bud off from the membrane of the ER and fuse with the Golgi apparatus. Therefore, the fluorescent tagged integral membrane protein can move into the membrane of the Golgi apparatus.
  • Vesicles bud off from the Golgi apparatus and fuse with the Plasma membrane, Lysosome membrane, and Vacuole membrane. Hence, the fluorescent tagged integral membrane protein can be found in all these organelles.
  • Ribosome lacks a membrane and hence, the fluorescent tagged integral membrane protein will be absent over here.
  • Both Mitochondria and Chloroplast, are self-replicating and dividing organelles. Their proteins (membrane or matrix) are encoded mostly by their own genome. Also, vesicles that bud from from nucleus or ER or Golgi apparatus do not fuse into their membrane. Hence, the fluorescent tagged protein would not be able to reach their membrane.
6 0
1 year ago
Ned is a registered nurse who gains a certification to identify and interpret injuries for violent causes. Which type of certifi
nevsk [136]

Answer:

C. ACFEI

Explanation:

ACFEI certification is given to professionals with the ability to examine and interpret situations related to forensic technology. Thus, professionals with this type of certification are able to act in the examination of bodies and other factors related to injuries from violent causes that may or may not have led to a fatality.

For this reason, we can conclude that Ned has this type of certification.

7 0
2 years ago
Read 2 more answers
The flesh-eating bacteria, vibrio vulnificus, destroys healthy tissue. infectious agents such as this are best classified as wha
Ivan
The possible answers are
1. Abiotic environmental
2.Biotic environmental
3.Genetic
<span>4.Pathogenic
</span>
The correct answer is 2.
There are two groups of environmental factors, the abiotic factors like temperature and biotic factors that refer to the effects that living beings have on each other.
<span>The flesh-eating bacteria, Vibrio vulnificus is a living organism affecting another organism by attacking its healthy flesh, therefore this effect is classified as a biotic environmental factor.</span>
7 0
2 years ago
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