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3 years ago

Why do you think air pressure is greatest at the lowest part of the atmosphere?

Biology

1 answer:

Alex777 [14]3 years ago

4 0

Answer:

At sea level, air pressure is greatest because it is caused by the weight of the entire column of atmosphere at that altitude over that location. As altitude increases, the column of atmosphere gets shorter, and so less weight is pressing down at a given altitude, so atmospheric pressure is reduced.

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Part A - Modification of chromatin structure Which statements about the modification of chromatin structure in eukaryotes are tr

Salsk061 [2.6K]

Answer:

Some forms of chromatin modification can be passed on to future generation of cells

Acetylation of histone tails in chromatin allows access to DNA for transcription

DNA is not transcribed when packaged tightly in a condensed form

methylation of histone tails can promote condensation of the chromatin

Explanation:

chromatin modifications that can be passed on includes epigenetic modifications that are heritable changes made to the chromatin structure that does not involve the DNA sequences. Some epigenetic modifications include DNA methylation and Histone modifications. examples of histone modification include acetylation, methylation, phosphorylation, ubiquintylation etc. All these function either in allowing the DNA become more accessible to transcritional factors or vice versa. for exmple, histone tail acetylation encourages unwounding of nucleosomes allowing transcriptional factors to have access to the DNa while histone tails methylation further tightens the nucleosomes promoting condensation of the chromatin.

5 0

4 years ago

Lunar eclipse? solar eclipse? ms Garcia’s students are studying the topics. they are making the model seen here.

ludmilkaskok [199]

Solar eclipse

Ignore this need to get 20 characters

4 0

3 years ago

Read 2 more answers

*I will give you brainliest IF YOU GET THIS RIGHT*

nignag [31]

They involve changes in energy. Hope this helps.

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3 years ago

An amoeba reproduces by splitting itself into two amoebas. This means that the original amoeba dies and its two offspring live o

Naddika [18.5K]

Answer:

If one amoeba dies then two amoeba get born:

at different stages of the generations of the amoeba it changes accordingly and the died amoeba numbers are also change in the given manner :

stages dies born

I 1 2

II $2^{1}$ 4 = $2^{2}$

III $2^{2}$ 8 = $2^{3}$

At $n^{th}$ = $2^{n}$ $2^{n+1}$

By the geometric series formula:

1+ $a^{1}$ + $a^{2}$ + $a^{3}$ ...+ $a^{n}$ = $\frac{a^{n+1} }{a^-1} }$

so, 1+ $2^{1}$ + $2^{2}$ + $2^{3}$ ...+ $2^{n}$ = $\frac{2^{n+1} }{2^-1} }$

Thus, total amoeba died = $2^{n+1}$ -1

total amoeba died+1 = $2^{n+1}$ (born).... hence prooved

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3 years ago

A person with a blood pressure of 134/82 mmhg would have a pulse pressure of

leonid [27]

A person who exhibits a blood pressure of 134/82 mmhg would likely have a pulse pressure of beats/min ranging from sixty to seventy beats per minute in which a person would likely receive as a pulse pressure when he or she has a bp of 135/82 mmhg

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4 years ago