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Nookie1986 [14]
3 years ago
12

Acrostic poem -diffusion

Biology
1 answer:
jenyasd209 [6]3 years ago
8 0

What!? Is this music because you put it as english

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Where do prions come from?
Musya8 [376]

Answer:

There are prion-like particles in the brain normally, and when these become abnormal they can cause disease. (Ans. A)

Explanation:

Prions are proteins which can trigger normal proteins to fold abnormally, and they are present in the brain. They are causing many types of neurodegenerative diseases in both humans and animals. Which are known as transmissible spongiform encephalopathies.

Prions can enter the brain with the help of infection, also can arise from the gene mutation that encodes the proteins, and sometimes this affects humans by infected meat.

If a person infected from prion disease, it affects central nervous system tissues like brain, eye tissues and spinal cord.

6 0
2 years ago
a leaf cell has a very low concentration of salt. What would happen to a leaf cell if it were placed in a highly concentrated sa
Travka [436]

Answer:

When a leaf is placed in a solution whose salt concentration is higher than the salt concentration of the leaves, the water with in the leaves shall move out of the leaves due to the osmotic pressure gradient. This will cause the plant cell devoid of water thereby leading them to shrink and wilt.

Explanation:

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3 years ago
A student wants to answer the question "Does adding calcium powder to soil make pea plants grow faster?" She adds calcium powder
attashe74 [19]

Answer: the correct answer is A) All plants should be the same age and health and be given equal amounts of water and sunlight.

8 0
3 years ago
Cardiac muscle does not exhibit tetanus beacuse it has A. exclusively aerobic respiration. B. fast Ca2 channels. C. a long absol
Nina [5.8K]

Answer:

C, a long absolute refractory period.

Explanation:

Tetanus is not possible in cardiac muscle tissue because cardiac cells have longer action potentials and a very long refractory period compared to other cells. This helps prevent the heart from cramping and seizing up.

5 0
2 years ago
Question 1
Nadya [2.5K]

Answer: Question 1 answer: Skin cells continually replicate

Explanation: The cells in the superficial or upper layers of skin, known as the epidermis, are constantly replacing themselves. This process of renewal is basically exfoliation (shedding) of the epidermis. But the deeper layers of skin, called the dermis, do not go through this cellular turnover and so do not replace themselves.

Question 2 answer: Heart cells undergo terminal differentiation

Explanation: Different cell types (e.g., neurons, skeletal and heart myocytes, adipocytes, keratinocytes) undergo terminal differentiation, in which acquisition of specialized functions entails definitive withdrawal from the cell cycle.

Question 3 answer: DNA replicates in the nucleus

Explanation: DNA replication occurs in the cytoplasm of prokaryotes and in the nucleus of eukaryotes. Regardless of where DNA replication occurs, the basic process is the same. The structure of DNA lends itself easily to DNA replication.

Question 4 answer: The ability to reverse terminal differentiation might affect gene expression in a complex organism

Question 5 answer Cytoplasm replicates during mitosis

Explanation: This process involves replication of the cell's chromosomes, segregation of the copied DNA, and splitting of the parent cell's cytoplasm. ... The outcome of binary fission is two new cells that are identical to the original cell.

5 0
2 years ago
Read 2 more answers
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