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Westkost [7]
3 years ago
8

Thinking Critically Potassium-40 decays to

Biology
1 answer:
mamaluj [8]3 years ago
3 0

Answer:

The radioactive isotopes of Potassium-40 generally observed to decay to argon-40 and calcium 40, also called daughter isotopes. The problem arises with the calcium 40 radioisotopes which cannot be used for age determination due to its excessive presence.

Explanation:

The radioactive isotopes Potassium 40 decays to argon 40 helps in determining age of fossils and rocks mainly due to the fact that extreme heat causes radioactive potassium to decay to noble argon-40 gas. The rate of decay is attributed to its half life period which in turns help in finding the relative age of fossils or rocks. But, problem occurs when it decays to calcium 40, as because calcium forms large part of many minerals including bone.

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Nonvascular plants have a system that transports water and nutrients throughout the plant’s body
solniwko [45]

Answer:

False

Explanation:

Plants, based on whether they can conduct water and nutrients, are classified into vascular and non-vascular plants. Vascular plants also called TRACHEOPHYTES are plants that possess certain special tissues called vascular tissues used for conducting water and nutrients in a plant. These conducting tissues are xylem and phloem.

On the other hand, non-vascular plants do not possess vascular or conducting tissues, hence, they cannot transport water and nutrients throughout the plant. Hence, such plants are naturally found in moist areas e.g. mosses. Therefore, based on the question asked, the answer is FALSE.

4 0
3 years ago
What is the process by which arteries become hard and stiff as a result of too much pressure?.
erastovalidia [21]

Answer: atherosclerosis

Explanation:

8 0
2 years ago
Replicate the following (write the complementary DNA strand);<br><br> ATT ACG CGC
pogonyaev

Answer:

GCC GTA TAT

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Cytosine pairs with thymine.

Hope it helps!

3 0
2 years ago
Read 2 more answers
Which solution of ethyl alcohol is more effective at inhibiting microbial growth: a 70% solution or a 100% solution? Why?
Triss [41]

Answer:

70% solution is more effective

Explanation:

The 70% solution is more effective at inhibiting microbial growth than the 100% solution of the ethyl alcohol.

This is because the pure ethyl alcohol coagulates the protein that is in contact with it.

Also, pure alcohol will tend to evaporate faster than the 70% solution of the ethyl alcohol and it will not be that much effective.

3 0
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Where in the cell is protein pumps located ??
Anestetic [448]

Answer:

cell membrane

Explanation:

There are thousands of proteins embedded in the cell's lipid bilayer

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