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VMariaS [17]
4 years ago
11

Modifications of bases, changes to histones, and alterations in chromatin structure that regulate gene expression are said to be

:
Biology
1 answer:
guapka [62]4 years ago
8 0

Epigenetic is a Modifications to bases, changes in histones, and alterations in chromatin structure.  It Changes in the manner in which DNA is packaged and may affect gene expression. Can be inherited through cell division; Reversible and responsive to changes in the environment, Example: Manner in which mammals equalize the expression of X-linked genes in XX F and XY M.

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One alternative to autoclaving for sterilization of liquids is filtration. Imagine that you are using a filter to sterilize a dr
Strike441 [17]

Answer:

c. Fungi

d. Yeast

Explanation:

Both fungi and yeast will be effectively removed by a 0.22 micron pore size filter.

<em>The size of microscopic fungi ranges from 2 to 10 microns  while the size of yeast ranges from 3 to 4 microns in diameter. Hence, both organisms will be effectively filtered off by a 0.22 micron filter paper.</em>

The size of bacteria ranges from 0.2 to 2 microns while that of virus is in nanometer. Hence both cannot be effectively removed by a 0.22 micron pore size filter paper.

The correct options are c and d.

5 0
3 years ago
How does the double-helical structure of dna explain how the molecules can be copied or replicated?.
Gemiola [76]

Answer:

The DNA helicase comes and splits the hydrogen bonds that are holding them together which allows DNA primase and DNA Polymerase (3) to come and replicate the strands from 5' to 3'. Then both strands have half of the old and half of the new, and have a collected 2 double-helical structures, which means there is technically 1 copy.

Hope this helps!

Explanation:

7 0
2 years ago
Identify the parts of the human body that normally contain bacteria
WITCHER [35]

skin

conjunctiva

oral cavity

teeth

mucous membrane

upper respiratory tract

nasal membranes

pharynx (throat)

lower respiratory tract

gastrointestinal tract

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3 0
4 years ago
I need help with this
Fofino [41]

Cells are the smallest biological unit of life found in all organisms. Cells are sometimes referred to as the “building blocks of life”.


There you go!

8 0
2 years ago
Read 2 more answers
An organism poisoned with cyanide would not be able to produce which molecules
liubo4ka [24]
Cyanide prevents the production of oxygen
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