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polet [3.4K]
2 years ago
14

Help im low key confused

Biology
1 answer:
castortr0y [4]2 years ago
8 0

Answer:

3

Explanation:

so since the density of water is 1, anything less than 1 would float in water (making it cork), and anything more than 1 would sink.

the only one that's less than 1 is sample number 3, because its 24/100

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The _____ produces secondary phloem and xylem tissue, adding to a tree's girth.
lilavasa [31]
The aswer is b. Vascular Cambium

it is a plant tissue which is located between Xylem and Phloem in the stem and root of a vascular plant and the source that produces Secondary xlem and phloem

Nb : Vascular Cambium does not transport waters , minerals, it only produce Xylem and Phloem which add the tree's girth
7 0
3 years ago
In Avery's experiment, he used DNase, RNase or proteinase to treat the heat killed S strain to see what component in the debris
nevsk [136]

Answer:

S strain

Explanation:

The Avery experiment demonstrated DNA is the genetic material. It expanded upon the findings made by Griffith.

They used Pneumococcus; Smooth strain which was virulent and the Rough which was not.

Cultures of heat killed smooth strain were prepared after which it was treated with DNases ,RNases and Proteinases to remove DNA, RNA, and proteins respectively. It will then be introduced to living Rough strain.

When treated with RNases only the RNA will be destroyed and transformation will take place leading to colonies of S stains being formed.

Only when treated with DNase did the colonies S strain fail to be formed.

7 0
3 years ago
Why is the water bath used for boiling a leaf in alcohol​
geniusboy [140]

If the heat is applied by open flame, the slow boil-off of alcohol vapor can burn off without exploding or igniting the leaf bath.

4 0
3 years ago
If an organism has 6 haploid chromosomes, how many chromosomes are present? 6 12
gavmur [86]
The Haploid number is half (haploid cells are sex cells egg and sperm they have half as many chromosomes as the diploid cells which are normal cells ) of the chromosomes so that would be 12. To clarify that if a organism has 12 chromosomes and reproduce sexually it takes two
parents each contributing ether a egg or sperm each egg or sperm contains half of the genetic
<span> material 


Your answer would be (6)




Hope this helps.
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4 0
3 years ago
When plants undergo photosynthesis, they take in water and other nutrients from the soil and carbon dioxide from the air to prod
Vinil7 [7]

Answer:

In an ecosystem photosynthetic plants act as producers wheres other organism act as consumers.

Explanation:

Green plants undergo photosynthesis to produce their own food as a result they are called producers and are placed in the first tropic label of energy pyramid.

          The other organism that intake green plants are called primary consumers for example grasshopper. The primary consumers are placed in the second tropic label of energy pyramid.

           The other consumers are termed as secondary consumers or primary carnivores that feed on primary consumers For example Snake because it eats grasshopper and is placed in the third tropic label.

         Finally the tertiary consumers or secondary carnivores consumes secondary consumers to intake energy from them.For example Hawk eats snake,as a result hawk act as secondary carnivores and are placed in the top of the energy pyramid.

5 0
3 years ago
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