What kind of tropism do roots display when they grow downward into the soil ?

1 answer:

7 0

At first they grow downward in the direction of gravity. This is called geotropism. They also grow in the direction of humidity, water. This is called hydrotropism.

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3. Suppose you are viewing a sample from a PURE culture and observe both red and purple cocci. What are the possible problems th

Scorpion4ik [409]

Answer:

The culture might not be stained properly or the culture might be too old.

Explanation:

Gram staining is done to differentiate between gram-positive and gram-negative bacteria according to the difference in their cell wall. In gram staining, the gram-positive bacteria appears violet and gram-negative bacteria appear pink in color.

Therefore if a pure culture contains have both red and purple cocci that it can be concluded that the gram stating was not done properly like too much destaining was done or too much safranin was used or maybe the culture is too old so that cell wall of some bacteria degrades.

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What is Chlamydomonas?

saveliy_v [14]

Chlamydomonas is a unicellular algae. It occurs in many Varieties .Most of these are free floating,fresh water green algae.

<h2>More information</h2>

the plant body is unicellular and biflagellate.
the cell is spherical or cylindrical in shape .
the Protoplasm of the cell is always surrounded by a thin cellulose wall .
a pair of flagella of equal size is present at the anterior end. it moves by the lashing actions of the flagella.
usually two contractile vacuoles are present .
it contains a single nuclear suspended in colourless portion of the cytoplasm .

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3 years ago

Which best describes a benefit of using DNA technology in medicine?

solniwko [45]

What are the options? you can use DNA technology to fix specific proteins for different people

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Where are your genes found?

CaHeK987 [17]

1.) A persons genes are found in their chromosomes. The correct answer is D, your chromosomes. The correct answer is D.

2.) The shape of DNA is called a double helix. The strands run opposite each other and twist together. The correct answer is B.

3.) The relationship between a chromosome and DNA is that chromosomes are made of DNA. The correct answer is A.

4.) One thing that parents pass on to their offspring is genes. For example, hair color, eye color, skin color. The correct answer is A.

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An atom of an element that has a different number of neutrons that the standard atom of that element

igomit [66]

That would be an isotope

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3 years ago