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PilotLPTM [1.2K]
3 years ago
15

Concluded that bacteria could be transformed from harmless to dusease-causing by an unknown factor

Biology
1 answer:
Alisiya [41]3 years ago
5 0
In 1927, Fredric Griffith concluded that bacteria could be transformed fromharmless to disease-causing by introducing a factor that was not yet identified.This changing factor was eventually discovered to be DNA, the basis for all.<span>biological reproduction</span>
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Which group of elements on the periodic table forms covalent compounds with other nonmetals
swat32

grp 17

Explanation:

this should be the new periodic table:) grp 1 and 2 belongs to metal. grp 18 belongs to halogen which have full valence electron thus they are inert/ unreactive. thus the ans is grp 17. grp 17 are halogens which are non metals.

5 0
3 years ago
Water movement from the side of the membrane having a lesser number of particles and greater concentration of water to the side
aalyn [17]

Answer:

The correct answer is: a) osmosis.

Explanation:

  • Osmosis can be defined as the physiological process by which molecules (in this case water) tend to move from a region where their concentration is high to a region where their concentration is low by the process of diffusion across a semi-permeable membrane.
  • Active Transport can be defined as the physiological process in which molecules are forced to move from a region where their concentration is low to a region where their concentration is high across a semi-permeable membrane. This process requires the expenditure of energy and is usually mediated by carrier proteins or integral membrane proteins which span across the plasma membrane.
  • Filtration can be defined as the physical process by which insoluble solute molecules are separated from the solvent molecules by the help of a porous filter paper which allows the solvent molecules to pass through it but restricts the insoluble solute molecules from passing through it.
  • Diffusion can be defined as the physical process by which molecules tend to move from a region where its concentration is high to a region where its concentration is low. However, unlike osmosis, there is no semi-permeable membrane which separates the two regions.
5 0
3 years ago
4. Which task in the a salon is an example of a chemical change?
gayaneshka [121]

Answer:

B. Dying hair a different color

6 0
3 years ago
Peppered moths in the early 1800's were mostly white-winged insects. During the Industrial Revolution, these moths had a hard ti
nadezda [96]

Answer:

Evolution.

Explanation:

Evolution is the gradual change that occurs in the genetics of an organism. Change in environment of an organisms play an important role in evolution. Evolution leads to the change in the physical structure of an organisms that is compatible to that environment so gradual change occurs in the genetics of the moth having gray wings which helps the moth to hide in the ash.

3 0
3 years ago
PLEASE HURRY I HAVE TO FINISH THIS BY 12:45
MA_775_DIABLO [31]
Cell membrane - 5
Chloroplast - 6
Ribosome - 9
Nucleus - 4
Cell wall - 2
Mitochondria - 3
Lysosome - 7
Endoplasmic reticulum - 1
Vacuole - 8
4 0
4 years ago
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