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Alexandra [31]
3 years ago
12

Explain why a skydiver falls to earth fast, but an astronaut is able to float in space. Explain how gravity is working in both o

f those
situations.
Biology
1 answer:
Andru [333]3 years ago
4 0

Answer:

A skydiver falls to earth fast because there is gravity on Earth and a Astronaut is able to float in space because there isn't any in space .

Explanation:

Gravity doesn't exist in space because there is no air but there's air on Earth

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Let's suppose you were interested in developing drugs to prevent epigenetic changes that may contribute to cancer. What cellular
Vaselesa [24]

Answer:

Potential targets:

1- DNA methyltransferases

2- Chromatin modifiers such as histone acetyltransferases, histone deacetylases, histone methyltransferases, etc.

3- Components of the RNA interference (RNAi) machinery such as Dicer, Argonaute, etc.

Explanation:

Epigenetics can be defined as the study of any heritable change in the phenotype that does not involve modifications in the DNA sequence. Epigenetic mechanisms can be classified into three major types: 1-DNA methylation, 2-histone modifications (e.g., acetylation, methylation, phosphorylation, etc), and 3-regulatory non-coding RNAs (e.g., miRNAs, lncRNAs, siRNAs, etc) that modulate target gene expression via the RNA interference pathway. There are different types of proteins that are involved in these complex epigenetic mechanisms, and those cited above represent only some examples that can be used as therapeutic targets.

5 0
3 years ago
Where are lymphocytes produced and stored?
Mariana [72]
Leukocytes are produced/stored in thymus, spleen, and bone marrow
4 0
3 years ago
1.
Leto [7]

Question

Which statement about bases is incorrect?

Answer:

Bases contain hydrogen ions Is the Correct Answer!

A base is a substance that accepts hydrogen ions. When a base is dissolved in water, the balance between hydrogen ions and hydroxide ions shifts the opposite way.

Hope this helps!

-FrozenVines-

8 0
3 years ago
Which of these is evidence of global warming?
Tanya [424]

Answer:

the answer to your question is A. Warmth = melting ice = more water = rising sea levels.

6 0
2 years ago
Read 2 more answers
The phase during which sister chromatids aggregate along the equator of the cell is called ________
vova2212 [387]

The phase during which sister chromatids aggregate along the equator of the cell is called the metaphase.

The image shows the process of cell division through mitosis. The mother cell divides into two genetically identical daughter cells in mitosis. There are four main phases in the mitosis process. They are: prophase, metaphase, anaphase and telophase. In the metaphase, the highly condensed sister chromatids line up along the equator of the cell by binding to the microtubles that form the skeleton of the cell. These kinetochores line up the chromatids at the equator to initiate their separation.

3 0
3 years ago
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