All categories

3 years ago

PLEASE HELP MEE

Biology

2 answers:

forsale [732]3 years ago

7 0

The main type of evidence the scientists used is fossils.
Palaeontologists study plants and animals that existed in the geologic past. To do so, they use fossils and try to determine an organism's evolution and relationship with the environment and other organisms. In this example, palaeontologists used fossils from ancient horses that have gone extinct and try to decipher their evolutionary path. Recognising the evolutionary steps of the ancient horses will make it possible to compare them to the modern horses.

Monica [59]3 years ago

4 0

Scientists decipher the structure of the primitive living system that once existed on Earth with the help of fossil records.

Further Explanation:

Evolution is the phenomenon that occurs continuously on this Earth. Due to the natural selection process, the organism that better fits into the environment and prevails in a particular environment gets selected because factors like their physiological and biochemical process allow them to survive in that particular environment condition.

The evolution can be studied using the phylogenetic tree build by collecting evidence from fossil fuel. Studying biochemistry and genetic data from these records allows the scientist to decipher the lineages and draw the phylogenetic tree from these data. The monophyletic phylogenetic tree can even reveal about the ancestor of modern-day living organism.

Learn More-

1. Learn more about a haploid cell during meiosis brainly.com/question/94813

2. Learn more about how are mitosis and binary fission similar brainly.com/question/6462270

3. Learn more about a dividing eukaryotic cell that is treated with a drug that inhibits the shortening of spindle microtubules. This will cause the cell division cycle to stop at the ____ stage. brainly.com/question/10767798

Answer Details:

Grade: High school

Chapter: Evolution

Subject: Biology

Keywords:

Fossil, living system, Earth, natural selection, organism, environment, physiological and biochemical process, evolution, phylogenetic tree, genetic data, monophyletic phylogenetic tree.

You might be interested in

See picture below!!!!!! :D

Marina86 [1]

1930-1950 hope this helps

6 0

3 years ago

Read 2 more answers

Translation occurs in which part of the cell?

Elza [17]

Explanation:

Where Translation Occurs. Within all cells, the translation machinery resides within a specialized organelle called the ribosome. In eukaryotes, mature mRNA molecules must leave the nucleus and travel to the cytoplasm, where the ribosomes are located.

4 0

2 years ago

Convert 9.75 millimeters to centimeters. centimeters

hoa [83]

Answer:

here,

10mm = 1cm

or, 1 mm=1/10 cm

or, 9.75mm=1/10×9.75cm

=0.975 ..........is the answer

hope it helps..

6 0

4 years ago

Mendeleev developed his table when he placed the elements

Crank

The answer to this is true

7 0

3 years ago

Read 2 more answers

18. Refer to Models 1 and 2 to complete the chart below. Write yes or no in the box for cach cell.

Ostrovityanka [42]

The most primitive cells are prokaryotic. They are simple, with no organelles and no nucleus. Animal and plant cells are eukaryotic, but they express some differences such as the cell wall, chloroplasts, or centrioles.

---------------------------------------------

BACTERIA CELLS

Bacteria are prokaryotic cells.

Prokaryotic cells lack a nucleus, nucleolus, and organelles.

They only present plasmids, ribosomes, and genetic material in their cytoplasm.

DNA not surrounded by membrane

They have a cell wall that protects the cell and a cell membrane that surrounds the cytoplasm. Some of them can also present a capsule.

Some of them have flagellum.

These organisms are capable of inhabiting places with extreme temperature, salinity, acidity, or pH, among others.

ANIMAL AND PLANT CELLS

Both the animal and plant cells are eukaryotic.

They carry their genetic material in the nucleus and mitochondria.

Organelles are located in the cytosol, and both of them are surrounded by a protector cell membrane.

However, they have some differences:

⇒Cell wall : A rigid structure that provides support and protection.

• Animal cells do not have a cell wall. They are only surrounded by the cell membrane, which is flexible so they can adopt different shapes.

• Plant cells have a wall, so their shape is usually prismatic and regular. The cell wall is composed mainly of cellulose.

⇒ Chloroplast: these are organelles that accumulate chlorophyll.

• Animal cells do not have chloroplasts because they do not photosynthesize.

• Plant cells have chloroplasts, and they are in charge of the photosynthesis process that allows plants to release oxygen. These organelles use solar light as the source of energy.

⇒ Vacuoles:

• Animal cells have many and small vacuoles whose function is to store water, ions, and waste intracellular substances.

• Plant cells have a unique big-sized vacuole that might occupy almost 90% of the cell. Their principal function is to store water and keep the turgidity. When the vacuole gets empty, the plant loses rigidity.

⇒ Other differences are:

The animal cell has centrioles, while the vegetable cell does not.

Plasmodium, chromoplasts, and glyoxysomes are present in the vegetable cell but not in the animal cell.

-----------------------------------

brainly.com/question/20112378?referrer=searchResults

brainly.com/question/18057281?referrer=searchResults

brainly.com/question/1894299?referrer=searchResults

brainly.com/question/560579?referrer=searchResults

3 0

2 years ago