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Tanzania [10]
3 years ago
7

What was chargaffs observation about the nitrogen bases in dna

Biology
1 answer:
zubka84 [21]3 years ago
5 0
DNA contains equal amounts of adenine/thymine and guanine/cytosine.
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Protozoans are the only organisms that can convert nitrogen from the air into chemical compounds that plants can use.
tigry1 [53]

Answer: False

Explanation:

Protozoans are not the organism that fix nitrogen for the plants. The organism that fix nitrogen to convert it into a form which can be used by plants are known as diazotrophs.

These are bacteria and archae that fix nitrogen gas found in the atmosphere into more usable form such as ammonia.

These organism can grow without any external source of fixed nitrogen. Example: Rhizobia and azospirillium.

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Monocots and dicots are both members of which plant group? nonvascular plants gymnosperms ferns angiosperms
nikklg [1K]
The answer is angiosperms
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In the life cycle of humans when does mitosis occur
garik1379 [7]
Around 40 weeks is when it occurs

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3 years ago
WILL GIVE BRAINLIST.Use the drop-down menus to answer the questions.
Studentka2010 [4]

Answer:

Point A - Intrusive igneous rock

Point B - Extrusive igneous rock

Explanation:

Intrusive igneous rocks are rocks which is formed by molten magma that cools and solidifies below and within the surface of the earth, thereby forming large crystals beneath the earth surface. Examples of Instrusive igneous rocks gabbro, granite, peridotite etc.

Intrusive Ignoeus rock is formed at point A in the diagram given above.

Extrusive Ignoeus rock, on the other hand, is the opposite of Intrusive igneous rock. Extrusive igneous rock is formed when molten rocks, called magma, erupts from beneath the earth and cools and solidifies on the surface of the earth, thereby forming small crystallized rocks. Examples of extrusive igneous rocks are basalt, pumice, etc.

Extrusive Ignoeus rocks would formed at point B in the diagram above.

6 0
3 years ago
PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!
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Answer:

Lister's work led to a reduction in post-operative infections and made surgery safer for patients, distinguishing him as the "father of modern surgery"

Explanation:

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