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Korvikt [17]
3 years ago
8

A geologist uses relative dating methods to guess that a rock is between 1 million and 5 million years old. What is one radioact

ive isotope the geologist can use to learn the exact age of the rock?​
Biology
1 answer:
vovangra [49]3 years ago
5 0

Answer:

Scientists usually use the potassium-argon method to date rocks that are older than about 1 million years. Uranium-238 is also used for radiometric dating. It has a half-life of 4.5 billion years. It decays to produce lead-206.

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All cells exhibit basic structural similarities. The general plan of cellular organization varies between different organisms, b
kotegsom [21]

Answer:

All cells exhibit basic structural similarities. The general plan of cellular organization varies between different organisms, but despite these modifications, all cells resemble one another in certain fundamental ways. Match each description with a feature. separates contents of cell from surroundings made up of contains sugars, salts, and amino acids contains prokaryotic DNA contains eukaryotic DNA matrix?

1. Prokaryotic and eukaryotic cells both has a nucloid/nucleus, organelles, cell membrane, contains ribosomes, has cytoplasm

2. Nucleus; contains eukaryotic DNA

3; Nucloid; contains prokaryotic DNA

4; Cytoplasm; semi fluid matrix, contains sugars salt and amino acids

Explanation:

The cell from latin cella, meaning "small room" is the basic structural, functional and biological units of all known organisms. A cell is the smallest units of life and they are often called the building blocks of life the study of cell is called cytology. cells contains cytoplasm enclosed within a membrane which contains many biomolecules such as potein and nucleic acids. most plants and animal cells are only visible under a microscope with dimensions between 1 and 100 micrometers.

8 0
3 years ago
Taenia saginata/Taenia solium are commonly known as tapeworms. true or false
Genrish500 [490]

Taenia saginata/Taenia solium are commonly known as tapeworms is a <u>true</u> statement.

Explanation:

Tapeworms are long segmented parasitic flatworms which reside in the intestines of the host’s body. They belong to the phylum Platyhelminthes and scientifically called the Cestoda.  

Tapeworm belonging to the Taenia species like the T. saginta, T. solium, T. asiatica etc causes parasitic infections called Taeniasis in the human body and affects the intestines.  

Taenia saginata is the tapeworm which resides in pork and Taenia soleum resides in beef.  

Humans can be infected with tapeworms when raw or improperly cooked pork or beef is consumed .

7 0
3 years ago
The thyroid gland is situated between which two structures?
stich3 [128]
Hi the answer to your question is called the jugular notch and the cricoid cartilage that the thyroid gland is between.
Hope this helps.
3 0
3 years ago
Amino acids with hydrophobic r groups are most often found buried in the interior of folded proteins. true or false
pentagon [3]

Answer:

True

Explanation:

Hydrophobicity is the aversion to the water of a molecule (or part of it). Amino acids with a hydrophobic R group (glycine, alanine, valine, leucine, isoleucine, proline, phenylalanine, methionine, and tryptophan) <em>will fold with the R groups in the interior to avoid water. This behavior is one of the most important forces in protein folding. </em>You can see it exemplified in the image I added.

I hope you fidn this information useful and interesting! Good luck!

7 0
3 years ago
What pigment absorbs light energy when photosynthesis begins?
gregori [183]
The answer is the pigment red
7 0
3 years ago
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