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lidiya [134]
3 years ago
5

BRAINLYIST PLSSSS HURRY

Biology
2 answers:
aniked [119]3 years ago
4 0

Answer:. Maybe A. Im not sure.

horrorfan [7]3 years ago
3 0

Answer:

A

Explanation:

only one type of atom= (PURE SUBSTANCE not mixture)

is atom chemically bonded to another atom? (NO- element, not compound)

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Hershey and Chase used a DNA-based virus for their work. How might the results have been different if they had used an RNA virus
4vir4ik [10]

Answer:

The correct answer is c.With an RNA virus, radioactive RNA would have been in the final pellet.

Explanation:

Hershey and Chase infected<em> E.coil</em> with bacteriophage which was having DNA as its genetic material. The bacteriophage was labeled with radioactive sulfur and radioactive phosphorus and it was radioactive phosphorus that was found in the bacterial cells or pellet.  

As because DNA contains phosphorus, not protein therefore they it was proved that DNA is the genetic material. Similarly, RNA is also a nucleic acid which is genetic material for many viruses and contains phosphorus.

So if Hershey and chase might have chosen an RNA virus then radioactive RNA would have been present in the pellet. So the correct answer is c.

7 0
3 years ago
Describe the cell membrane, cell wall, nucleus, and cytoplasm. which of these structures are you likely to find in a prokaryotic
Morgarella [4.7K]

Answer:

you can see below

Explanation:

Basic Definitions:

Cell Membrane = the semi-permeable structure that surrounds the cell and keeps all of the cells organelles from exploding everywhere.

Cell Wall = the rigid 'armor' of the cell that surrounds it after the membrane. Usually made up of cellulose and ONLY found in plant cells.

Nucleus = A really dense organelle of the cell usually surrounded by two membranes. They contain and protect your genetic material. Basically everything that makes you, you.

Cytoplasm = The watery, salty, and protein filled 'soup' that fills the cell. All organelles float happily in this.

Now Specific Locations:

Eukaryotic cells

have plasma membranes

please mark me brainliest or mark me thanks at leat

only have cell walls if the cells are plants.

They do have a nucleus.

They have cytoplasm

Prokaryotic cells

have plasma membranes

cell walls are usually chemically complexed.

don't have a nucleus

have cytoplasm

Animal cells

only have the plasma membranes.

No cell wall

have a nucleus

have cytoplasm

Plant cells

have both the cell wall

and have a plasma membrane

have a nucleus

have cytoplasm

4 0
3 years ago
What are some ways to increase carbon dioxide? To reduce carbon dioxide?
Brut [27]

<u>Some ways to increase carbon dioxide and To reduce carbon dioxide:</u>

WAYS TO INCREASE CARBON DIOXIDE

  • Consuming electricity: The main reason for the CO_2 emission is the burning of fossil fuels. 41% of the CO_2 emitted  in the US form generating electricity.
  • Deforestation: cutting of trees increases the CO_2 in the atmosphere.

WAYS TO REDUCE CARBON DIOXIDE:

  • Reuse and recycling: By buying used products and reselling or recycling are reduce your carbon emissions.
  • Planting more trees: trees are used to stored the removed CO_2 from atmosphere CO_2 helps the plants for photosynthesis. so plant more trees.
8 0
3 years ago
PLEASE HELP!!!!!!!!RELATR CAUSE AND EFFECT. How could the number of mitochondria in an athletes muscle cells affect his or her p
bazaltina [42]
Mitochondria makes the energy for the entire cell, or ATP. Having two or more in a athletes muscle would be a huge advantage because the more ATP, the more endurance the muscle has.
7 0
3 years ago
Lesson 3 : wrapping up Unit 3
musickatia [10]

Answer:

  • 9 The water levels are constant in estuaries

Explanation:

  • 10.  Black sands are found when tides are particularly higher.
  • 11. Both tides and currents are predictable movements of water.
  • 12. The salinity of brackish water can vary with the tides.
  • 13. The barnacles attach themselves to seaweed and feed on it.
  • 14. Ocean helps to lessen global warming by absorbing lots of carbon dioxide.
  • 15. Five Solomon islands have disappeared because of erosion and increasing seas.
  • 16. Bottom-feeding fish are not part of the benthic community.
3 0
3 years ago
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