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Ede4ka [16]
2 years ago
12

According to one hypothesis, life on earth emerged from (bluegreen algae/ amino acids/ molten metals/ crustal rocks) in the pres

ence of large amounts of gasses seeping from deep ocean vents. ANother process called primordial soup suggests that the formation of life was due to the effects of (lightning/sunlight/gravity/meteorites) in earths atmosphere. CHOOSE AN ANSWER FROM INSIDE EACH OF THE PARENTHESIS.
Biology
2 answers:
Yuri [45]2 years ago
6 0
1) The answer is <span>bluegreen algae
</span>
Bluegreen algae or cyanobacteria <span>are thought to have started life on earth because they converted the atmosphere that didn't have a lot of oxygen, into an atosphere with enough oxygen to exist life. That </span>oxygen was a product of their photosynthesis.

2) The answer is lightning.
<span>By Primordial Soup Theory, life began as a result of the combination of chemicals from the atmosphere and lighning (a form of energy) to make amino acids. Aminoacids are necessary to build proteins, and proteins are necessary for all the organisms.</span>
Cerrena [4.2K]2 years ago
5 0

The right one answer are  AMINO ACIDS, and LIGHTNING.

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Which of the following represents an isotope for lithium (73Li)?
NARA [144]

Answer:

The correct answer is - option b) 3Li .

Explanation:

Lithium that is occurring naturally have two isotopes that are stable one with an atomic mass of 7 and the other with an atomic mass of 6 both have the same atomic number.

In question 7(atomic mass) 3 (atomic number) is given and there is only two option have 3 atomic number with 3 b) 3.Li and d) 43Li. 4 atomic mass is not naturally occurring isotopes and as option b) has a no atomic mass so it would be the correct answer.

Thus, the correct answer is - option b) 3Li .

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2 years ago
A child falls and suffers a deep cut on her leg. The cut went through her skin and she is bleeding. Which of the following defen
Vesnalui [34]

Answer:

The correct answer is option C) phagocytosis in the inflammatory response.

Explanation:

Our body has an immune response mechanism for when we get hurt or when<u> it feels that something outside our body wants to harm us</u>, so its automatic reaction is to defend against all those bacteria and viruses that want to attack us.

The system is responsible for <u>identifying the antigens and destroying them.</u> The antigens are all bacteria, harmful viruses and dead substances that are found on the cells. Our system has its own proteins that are HLA antigens. But as these are normal for the body, it does not counterattack them.

There are <u>several defense mechanisms that work as barriers</u> to prohibit the passage of any bacteria that harm us, and one of these mechanisms is inflammation.

In this case, when our body suffers some kind of injury from a bacterium, a cut or a blow, the damaged cells release substances that spill onto the tissue through the blood vessels, causing inflammation.

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5 0
2 years ago
The slide image shows epithelium tissue found in the bladder. What is the function of the tissue indicated by the arrow?
Ede4ka [16]
Epithelial cells are mainly used for protection; in the urinary tract, these tissue cells are used to protect the bladder from toxic urine. The tissue can also expand to hold larger quantities of urine.
8 0
2 years ago
After ingestion of a food particle, pH changes and enzymes contributed by the ________ will digest and hydrolyze the ingested pa
harkovskaia [24]

Answer:

as the question is incomplete i have added the link to full question in ask for detail section.

b) Lysosome

Explanation:

After ingestion of a food particle, pH changes and enzymes contributed by the __Lysosome__ will digest and hydrolyze the ingested particle in the phagocytic vacuole.

7 0
2 years ago
What similarities, if any, do you think exist between a human’s reproductive cycle and the life cycle of a fern? What difference
ipn [44]

Answer:

Plant Reproduction and Life Cycle. The life cycle of a plant is very different from the life cycle of an animal. Humans are made entirely of diploid cells (cells with two sets of chromosomes, referred to as ''2n''). ... Plants, however, can live when they are at the stage of having haploid cells or diploid cells.

Explanation:

In an animal life cycle, male and female parents each create sex cells (sperm and eggs) that unite to form a fertilized egg and develop into an offspring organism. Plants, likewise, have sperm and eggs in their life cycles, but these are produced by an intermediate stage between the adult and the offspring.

7 0
2 years ago
Read 2 more answers
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