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GrogVix [38]
3 years ago
12

Which statement explains why carbon-14 dating Cannot be used to date ancient rocks

Biology
1 answer:
cestrela7 [59]3 years ago
6 0

The answer is the radioactive isotope reacts in the same way as stable isotopes in the chemical reactions in the body.


C-14 and C-12 are carbon isotopes used to measure the approximate age of organic remains. C-12 is stable, and it does not break down into other elements over time. C-14 is not stable. It breaks down into N-14. But, in the body, the radioactive isotope reacts in the same way as stable isotopes in the chemical reactions.

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Ribosomes are made in the nucleolus. What happens once the ribosome passes into the cytoplasm?
victus00 [196]

The Answer is B, as they attach to the endoplasmic reticulum so that the protein process can occur

3 0
3 years ago
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Corn smut and wheat rust are crop diseases caused by what what fungi
Hitman42 [59]
2. club fungi
explanation:

Corn smut is caused by Ustilago maydis while wheat rust is caused by Puccinia triticina. Both Ustilago maydis and Puccinia triticina are classified under division Basidiomycota. Basidiomycota is also called as club fungi. These fungi form specific club-shaped fruiting bodies called basidia. Basidia are the site for the formation of basidiospores.
6 0
4 years ago
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Amenorrhea may occur among women at fat levels as high as:
Sophie [7]
The correct answer is "16%"

16% of body fat in women is considered as low as normal body fat levels in women normally ranges from 22% to 25%. In cases of low body fat levels (i.e. in athletic women), there will be relative amenorrhea because of the suppression of the follicle-stimulating hormone and the luteinizing hormone leading to a type of amenorrhea called athletic amenorrhea.
5 0
3 years ago
For a science fair project, two students decided to repeat the Hershey and Chase experiment, with modifications. They decided to
posledela

Answer:

The correct answer will be option-E

Explanation:

Hershey and Chase's experiment was performed to test whether DNA serves as the genetic material or protein.

To perform experiment they grew bacteriophage into radiolabeled phosphorus and sulfur compounds. The phosphorus is an integral part of the structure of DNA whereas proteins contain sulfur in their structure.  

In the given condition if radiolabeled nitrogen is utilized then the experiment will fail as the structure of proteins also contains an amino group( NH₂) in their structure as well as DNA. The scientist will not be able to identify whether the DNA is the genetic material or protein.

Thus, option-E is the correct answer.

7 0
3 years ago
DO NOT POST LINKS
STatiana [176]

Answer:The correct answer is letter A.

Explanation: he is right

Your teacher gives you an unknown protist to classify that is currently inactive. The protist appears to have long lash-like

appendages protruding from its cell surface. Which kind of locomotion can we expect from this protist? (1 point)

The appendages of this protist will move in a dragging motion that actively pulls the protist forward.

O The appendages of this protist will move in a sweeping motion like oars to actively propel the protist forward.

The appendages of this protist will move back and forth like a wagging tail to actively propel the protist

forward

O The appendages of this protist are not functional, and the protist moves passively via environmental forces.

6 0
3 years ago
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