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tester [92]
3 years ago
12

Where on Earth did life begin and what were the special conditions needed?

Biology
1 answer:
inna [77]3 years ago
5 0

Earth was formed over 4.5 billion years ago meaning this world looked completly different from how it looks now. volcanic outgassing most likely created the world (but it's still uncertain). the earth began in the ocean and arose from there. the early atmosphere contained almost no oxygen until later in the years, building up oxygen. The earth contained a diveristy in chemicals.

hope this helps!!

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What are the Amino acids of the mutated DNA sequence: TAC ATC TTG GCG ACG ACT
Natali5045456 [20]

Answer:

Tyr Ile Leu Ala Thr Thr

Explanation:

In a DNA sequence, a pair of three bases form a codon that codes one particular amino acid in the protein. Proteins are consist of  20 amino acids and these amino acids are coded by a pair of three bases.  

There are four bases in a DNA - Thymine (T), Adenine(A), Guanine(G) and Cytosine(C).

The given mutated DNA sequence will also code for some amino acid, that is as follows:

TAC - Tyr (Tyrosine)

ATC - Ile (Isoleucine)

TTG -  Leu (Leucine)

GCG - Ala (Alanine)

ACG - Thr (Threonine)

ACT - Thr (Threonine)

Thus, The mutated DNA sequence  TAC ATC TTG GCG ACG ACT codes for Tyr Ile Leu Ala Thr Thr.

6 0
3 years ago
How do the thickness of the cuticle and the number of stomata differ in plants from wet habitats versus dry habitats? Drag the a
slavikrds [6]
<h2>Wet versus Dry habitats</h2>

Explanation:

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  • Stomata helps in exchange of gases whereas cuticle reduces the loss of water
  • If water is more then plants have large number of stomata which helps in great access to water and increases support for herbaceous tissues
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A.Vascular plants have a relatively large number of stomata

B. Plants from wet habitats include white lotus,water lily

C. Plants from dry habitats include xerophytes for example cactus,oleander

4 0
3 years ago
Proteins on the surface of vesicles determine where the vesicles go. Which cell organelle provides the instructions for these pr
yanalaym [24]

Answer:

D. Nucleus.

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A cell can be defined as the structural, fundamental, biological and functional unit of life. Cells are found in all living organisms because they are the basic unit of life. A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.

Some examples of cell organelles found in all living organisms such as trees, birds, and bacteria include; nucleus, cytoplasm, cell membrane, golgi apparatus, mitochondria, lysosomes, ribosomes, chromosomes, endoplasmic reticulum, vesicles, etc.

Proteins on the surface of vesicles determine where the vesicles go.

The nucleus is the cell organelle which provides the instructions for these proteins. It controls all the activities taking place in the cell and the synthesis of proteins.

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During pregnancy under what condition is Rh factor incompatibility a problem
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Answer:

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Which of the following most often the start of a scientific investigation
Flura [38]

the most often the start of a scientific investigation. is observation

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