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2 years ago

For which object would a geologist use carbon-14 dating to determine age?

Biology

2 answers:

Svet_ta [14]2 years ago

5 0

Answer:

<u>O Animal bones</u>

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Explanation:

In the upper atmosphere, Radioactive Carbon-14 is usually produced. In plants, it is incorporated by photosynthesis into organic molecules, later ingested by hetrotrophs.

It is used for the radiocarbon dating process of fossils and formations. Because of the unstable nature of the isotope used and the consistent rate of decay, radioactive isotope dating is an important way of detection in organic material. Here, this is a the measure of the time taken for half of the radioactive material to break down- this is called the half life for Carbon this is 5,730 years.

In animals, the Carbon-14 ingested is eventually incoporated into their bones. After they die, bones become dessicated, and the Carbon 14 is slowly broken down to become Nitrogen.

kodGreya [7K]2 years ago

5 0

Answer:

a animal bones

Explanation:got it rite on edg

2020

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Meiosis is a process that produces gametes. Using the diagram, what do you notice about the cells produced in meiosis?

Verizon [17]

Answer:

<u><em>The correct option is C) Meiosis produces 4 daughter cells each with half the number of chromosomes of the original cell.</em></u>

Explanation:

There are two main processes by which cell divides:

1) Mitosis

2) Meiosis

All the cells of the body divide by the process of mitosis except the sex cells.<em> Sex cells divide by the process of meiosis.</em>

Meiosis can e described as a type of cell division in which four daughter cells are formed each having half the number of chromosomes as the parent cell. This is because the cell has to attain half of the maternal and half of the paternal chromosomes at the time of fertilization.

Crossing over and independent assortment are the phenomenon of meiosis which bring genetic diversity among parent and children.

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3 years ago

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In the eastern region of the former Soviet Union, a railroad was built on the tundra. The surface soil was dug up and tracks wer

Dafna11 [192]

<span>When the surface layer was dug up, the permafrost was exposed. When the weather warmed, this exposed permafrost would have melted and become soggy, causing the ground underneath the tracks to shift.</span>

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3 years ago

Which change of state is shown in the model?

matrenka [14]

<h2>Hey there! </h2>

<h2>The correct option is:</h2>

<h3>B. Evaporation </h3>

<h2>Explanation:</h2>

<h3>Because the molecules inside the jar are moving upwards, which shows Evaporation. </h3>

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3 years ago

A parent cell gives rise to daughter cells with identical genetic information. Which of the following data supports the idea tha

Yuri [45]

Answer:

A feline skeletal muscle cell undergoes cell division, resulting in two feline skeletal muscle cells.

Explanation:

We are looking for a parent cell that gives rise to daughter cells with identical genetic information.

In simpler words, we are looking for something that makes 'clones' of itself.

In this statement (second option), the parent and daughters are all feline skeletal muscle cells.

A <u>feline skeletal muscle cell</u> undergoes cell division, resulting in two <u>feline skeletal muscle cells</u>.

Other incorrect choices: (All having to do with reproduction).

A child has <u>brown eyes</u>; one of its biological parents has <u>green eyes, and the other has brown eyes</u>.

This situation has two parents, each with a different trait. The child takes one of the parent's trait. The parents did not make a 'clone' of themselves.

A human sperm fuses with a human egg cell, resulting in the development of a new human.

The parents don't make 'clones' of themselves. The sperm did not make more sperm. The egg did not make more egg cells.

A <u>long-stemmed</u> plant reproduces with a <u>short-stemmed</u> plant, and the offspring are all <u>long-stemmed</u>.

The offspring plant only took the trait from one of it's parents. Also, whole plants are not individual cells.

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3 years ago

Why does a cell need to grow during interphase before it divides during mitosis? What would happen if cells did not grow before

dexar [7]

Answer:

the cell copies every oranelle in preperation for mitosis if it didnt go through interphase it woughd just split the organelle in half, interphase copies the dna and organelles .

Explanation: also the cell spends most of its life cycle in interphase.

7 0

3 years ago