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ratelena [41]
3 years ago
5

Describe how fossils help us understand the past

Biology
1 answer:
stepan [7]3 years ago
7 0
<span><em>They tell us how life evolved and adapted to different environments and global changes throughout the Earth's development</em>

<em>                                Hope this helps:)</em>





</span>
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Can someone write the first paragraph
Katena32 [7]

Hii!!

The purpose of mitosis is to create two new perfectly identical cells when either there is a need to replace old or damaged cells and to reproduce asexually by making new cells. Some organisms use mitosis to replace body parts. For example starfish replace lost arms by mitosis. Some organisms such as the hydra use mitosis to produce genetically identical offspring.

There are four stages of mitosis: prophase, metaphase, anaphase and telophase.

1) Prophase: chromatin into chromosomes, the nuclear envelope break down, chromosomes attach to spindle fibres by their centromeres

2) Metaphase: chromosomes line up along the metaphase plate (centre of the cell)

3) Anaphase: sister chromatids are pulled to opposite poles of the cell

4) Telophase: nuclear envelope reforms, chromosomes unfold into chromatin, cytokinesis can begin

● The order of the stages of mitosis can be remembered using the mnemonic PMAT.

Hope this helps!! if it has pls mark me as the brainliest Xd :D

4 0
3 years ago
g when hydrogen is present and the citric acid cycle is active, the ph of the mitochondrial matrix is
11111nata11111 [884]

Answer:

The pH remains constant

Explanation:

The pH value of Mitochondrial matrix = 7.8 while the pH of the intermembrane space of the mitochondria = 7.0–7.4

The presence of the hydrogen atoms makes the mitochondrial matrix acidic and hence reduced the pH value but the pH of inner and outer matrix is maintained equal to each other thus as the H+ ion increases, the base concentration increases thereby pushing H+ to the inter membrane space and hence producing ATP.

6 0
3 years ago
Select the best answer for the question
Norma-Jean [14]

Answer:

I think it is B. medium tell me if I am wrong

6 0
3 years ago
Provides great strength through parallel bundles of collagenic fibers found in tendons
tiny-mole [99]

Answer:

<h2>Dense connective tissue.</h2>

Explanation:

This is a type of connective tissue that has fibers, which are composed of collagen. You can refer to the image attached to see the parallel bundles of these collagenic fibers.

So, basically this formations help to forms strong tissue like tendons or ligaments.

8 0
3 years ago
Prokaryotes will take up foreign dna how is this characteristic used in genetic engineering
Charra [1.4K]
Pieces of genes can be inserted into the genetic material of prokaryotes so that they will make the protein products encoded in the genes or copies of the genes themselves
6 0
3 years ago
Read 2 more answers
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