Why are leaves green:

Helpppppppppppppppppp! Meeeeeeeeeeeeeeeeeeeeee!

dimaraw [331]

Answer:

D. Stem cells are often extracted from human embryos.

Explanation:

This is a major point of ethical concern and is also a root for many abortion conspiracy theories. The reason it is an ethical concern is because harvesting stem cells often times kills the embryo.

8 0

3 years ago

how does Subduction Sea Floor Spreading Theory of Continental Drift (Plate Tectonics) Formation of Mountains/Volcanoes/Trenches

gogolik [260]

For sure, one of the answers is Plate tectonics. The second answer would most likely be subduction, due to the fact, in the lessons revolving this question, it mentions both earthquakes and volcanoes caused by subduction.

8 0

3 years ago

What are the 5 steps in the lytic cycle of a virus reproduction

agasfer [191]

<span>The lytic cycle is a six-stage cycle. In the first stage, called "penetration", the virus injects its own nucleic acid into ahost cell. In some viruses this genetic material is circularand mimics a bacterial plasmid. The virus hijacks the cell's replication and translation mechanisms, using them to make more viruses.</span>

7 0

4 years ago

How are adaptations related to natural selection?

Alekssandra [29.7K]

The answer is C, or Adaptations increase the chances that an individual will reproduce and pass its genes onto the next generation. Such traits then become more common within a population.

4 0

2 years ago

When a cell containing an endospore (such as Bacillus subtilis) is stained with the Gram's method, the cell is stained but the e

Liula [17]

Answer:

Endospores Staining

Endospores are substances that are formed inside of specific bacterial cells which boost their survival rate in times of harsh conditions.

Gram staining alone is not sufficient to observe the endospores, which seems apparently clear when Gram-stained cells are observed.

Endospore staining employs two stains to identify endospores from other cell components.

•The Schaeffer-Fulton method employs heat to promote the primary stain (malachite green) into the endospore. Rinsing with water will well wash away the colour from the cell, as the endospore still appears to be green stained. Counterstaining pink with safranin will show the shape and location of endospores, if they are a part of the cell. The green endospores will be seen inside the pink vegetative cells or it will appear distinct from the pink cells in total. If no endospores are seen, only the pink vegetative cells will be observable.

The attached image shows a stained preparation of Bacillus subtilis revealing the endospores as green and its vegetative cells in pink coloration.

Endospore-staining procedures are essential for observing Bacillus and Clostridium, two genera of endospore-forming bacteria, production of bioterrorism agent from B. anthracis (which causes anthrax.

7 0

3 years ago