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Tems11 [23]
3 years ago
14

What are the similarities and differences of viroids and prions?

Biology
2 answers:
mars1129 [50]3 years ago
7 0
Viroids are small and infectious RNA molecules.  The term infectious means something to be negative... I think you can assume the rest of that part.  Prions are infectious protein particles, same term infectious.  They cause diseases in humans and animals.Viroids are small and infectious RNA molecules.  The term infectious means something to be negative... I think you can assume the rest of that part.  Prions are infectious protein particles, same term infectious. They cause diseases in humans and animals.

It's all just a search away, just google and summarize and there you go. :P
sasho [114]3 years ago
3 0
VIROIDS and PRIONS are both acellular pathogens, meaning that they: 

<span>- Are not made of cells </span>
<span>- Cannot reproduce on their own </span>
<span>- Do not grow or undergo division </span>
<span>- Do not transform energy </span>
<span>- Lack machinery for protein synthesis </span>
<span>- Are so small that they can only be seen with an electron microscope </span>

<span>They are not within any kingdom and carry their own significant characteristics: </span>

<span>1. Obligate intracellular parasite – require a host to cause damage </span>
<span>2. Filterable – small enough to be filtrated </span>
<span>3. Contains an outer protein coat and inner genome </span>
<span>4. Has only 1 kind of nucleic acid (RNA or DNA, but never both) </span>
<span>5. Lacks metabolic abilities
</span>
VIROIDS are very small, circular RNA (may appear linear), and infectious in plants. They do not contain a capsid. 

PRIONS are proteinaceous infective particles. Prions do not contain nucleic acid. Prions contain a single protein called PrP. The sequence of amino acid that makes up PrP can fold into at least an alpha-helices, cellular PrP and a disease causing form called beta-pleated sheets called prion PrP. All mammals have PrP.


Hoped I helped!
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The nursing instructor informs the students that which anatomical structure controls the elimination of urine from the body?
Tomtit [17]

The Urinary bladder controls the elimination of urine from the body.

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  • The typical healthy adult bladder has a two to five-hour storage capacity of up to two cups of urine.

Three parts of bladder allow urine to be discharged:

  • A pair of sphincter muscles. By tightly shutting around the bladder opening like a rubber band, these circular muscles assist prevent urine leakage.
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learn more about Urinary bladder here: brainly.com/question/21998875

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4 0
2 years ago
What animal is called the ship of the desert
nasty-shy [4]

Answer: the camel

Explanation:

because of its adaptation to the desert

5 0
3 years ago
Read 2 more answers
Carbon cycle contains an important stage called Carbon fixation. This
grandymaker [24]

Answer: 4

Explanation:

Fungi(mushrooms) are heterotrophs and they cannot fix nitrogen from the atmosphere and they must obtain it from their environment. They are using complex organic compounds as a source of carbon.

Most plants can fix carbon which are 1. Grass 2. Maple trees 3. Algae and hat are why they are incorrect answers because from this question only 4. mushrooms can fix carbon.

5 0
3 years ago
Drag the numbers to put the following steps in the correct order.
deff fn [24]

Answer:

- In glycolysis, glucose is split into two pyruvate and makes some ATP

- The Krebs cycle produces ATP, NADH and CO2

- NADH gives electrons to the ETC

- As electrons move down the ETC, a H+ gradient is made

- H+ pass through the ATP synthase to make ATP

Explanation:

This question is describing the processes involved in cellular respiration. Cellular respiration is the way through which living cells synthesize energy (ATP) by breaking down sugar. Cellular respiration involves three major steps: glycolysis, Krebs cycle, and oxidative phosphorylation (electron transport chain).

- Glycolysis is the process whereby glucose is broken down into pyruvic acid or pyruvate with the synthesis of net 2 ATP molecules.

- Kreb's cycle produces ATP, NADH and CO2.

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4 0
3 years ago
Match the animals with their characteristics.
anygoal [31]

Answer:

Earthworm - have a coelom and a closed circulatory system.

Scallops or clams - has a mantle and an open circulatory system.

Starfish - has an endoskeleton made of calcium-rich plates.

Spider - exhibits the phenomenon of molting.

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Scallops or clams belong to Phylum Mollusca, the second largest animal phylum. They are coelomate, triploblastic, bilaterally symmetrical organisms having an open circulatory system. They have a calcareous shell covered body with a distinct head, muscular foot, visceral hump and a mantle (soft and spongy layer of skin) over the hump.

Starfish belongs to Phylum Echinodermata, which consists of exclusively free-living marine organisms. They have an endoskeleton made up of calcium carbonate structures.  They are coelomate, triploblastic and have a water vascular system that is used for respiration, locomotion, food capture and transport.

Spiders belong to Phylum Arthropoda. They have chitinous covered segmented bodies, jointed legs and exoskeletons (hard external shells).  Arthropods periodically shed their exoskeletons or shells in order to grow, this process is called molting. They are coelomate, triploblastic, bilaterally symmetrical organisms having an open circulatory system.

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3 years ago
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