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damaskus [11]
3 years ago
8

Ipids contain the same three elements as all other macromolecules. Which other elements must your food contain so that your body

can make new nucleic acids?
A. Chlorine and sodium
B. Calcium and nitrogen
C. Phosphorus and sodium
D. Phosphorus and nitrogen
Biology
1 answer:
ioda3 years ago
3 0
The answer is D. Phosphorus and nitrogen
The three main elements are C, H and O. These two are elements other macro-molecules may not have
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The epidermis is a barrier to ultraviolet rays, blocking much of the cancer-causing radiation from reaching the nuclei of cells
UkoKoshka [18]

The epidermis is a barrier to ultraviolet rays, blocking much of the cancer-causing radiation from reaching the nuclei of cells called keratinocytes.

<h3>What is keratinocytes?</h3>
  • Skin cells, also known as epidermal keratinocytes, are highly specialized epithelial cells created for a very specific purpose: separating the organism from its environment.
  • Keratinocytes, which make up the majority of the epidermis, have a variety of functions that are crucial for skin restoration.
  • They carry out the re-epithelialization process, in which keratinocytes move, multiply, and differentiate in order to reestablish the epidermal barrier.
  • The majority of the epidermis's cells, known as keratinocytes, begin in the basal layer, manufacture keratin, and help to create the epidermal water barrier by producing and secreting lipids.
  • A kind of stratified epithelium known as keratinized stratified squamous epithelium has many layers of squamous cells, or keratinocytes, with the superficial layer of cells being keratinized.
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5 0
2 years ago
One theory of human evolution suggests that Homo erectus evolved directly into Homo sapiens (humans), after which point Homo ere
Reptile [31]

Answer:

The correct answer will be option-C.

Explanation:

The evolution of human species in which one species transformed into another species evolves by a mechanism known as anagenesis.

Anagenesis is the mechanism of evolution which transform one species into a different species within a lineage. This process is slow and takes time to form species, therefore, is also known as gradualism or phyletic transformation.

The<em> Homo sapiens</em> evolved from<em> Homo erectus </em>where<em> Homo sapiens </em>overwrites the ancestral species and caused the species to become  extinct.

Thus, Option-C is the correct answer.

5 0
2 years ago
Name the water-conducting tissue into which the two probes were inserted...​
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Tracheids and vessels are two water conducting hollow tubes present in the vascular tissue called is xylem. Xylem in a plant is responsible for transporting water from the roots to other parts of the plant.

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3 years ago
How does cohesion and adhesion differ?
alisha [4.7K]
Cohesion is the property of like molecules to stick to each when they have a mutual attraction 

Adhesion is the property of different molecules or surfaces to stick to each other 

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3 years ago
Which of the following accurately describes carbon atoms
GREYUIT [131]
There is nothing there to answer
4 0
3 years ago
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