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Vaselesa [24]
3 years ago
11

Visible quartz and potassium feldspar grains are the main constituents in:

Biology
1 answer:
Levart [38]3 years ago
3 0
I think they are the constituents of granite. Granite is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture. It is the most widespread of igneous rocks, underlying much of the continental crust. It is mined as either crushed stone or dimension stone mainly using open pit mining methods.
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The ability of one person to produce over a million different antibody molecules does not require over a million different genes
Tema [17]

Answer:

DNA rearrangment.

Explanation:

Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants.

The human somatic cell is made up of 46 chromosomes which are sub-divided into 22 pairs of autosomes and a pair of sex chromosomes (X and Y). An autosome is one of the numbered chromosome that is typically not a sex chromosome.

On the other hand, sex chromosomes (X and Y) are responsible for determining the gender or sex of living organisms such as humans.

Deoxyribonucleic acid (DNA) is an organic complex-molecular structure found in all living organisms. It comprises of genes and is essentially the foundation block of all living organisms such as humans, animals and plants.

DNA rearrangment can be defined as a process which typically involves re-writing the informations contained within a Deoxyribonucleic Acid (DNA) into a Ribonucleic Acid (RNA) by enzyme RNA polymerase.

Hence, the ability of an individual to produce over a million different antibody molecules doesn't require the use of over a million different genes; rather, this wide range of antibody production is due to deoxyribonucleic acid (DNA) rearrangment.

6 0
3 years ago
A new vaccine was developed and then tested on
natali 33 [55]
4) stimulating the production of antibodies 
so in future when you catch the same cold your body will be able to produce antibodies quickly because the memory cell remembers the antibodies that fights off the colds


i hope this helps and sorry if this is wrong
4 0
3 years ago
Kelp ________. is eaten by sea otters is eaten by orcas suffers intense herbivory from zebra mussels suffers intense herbivory f
Ira Lisetskai [31]

Answer:

Kelp is eaten by sea otters. Kelp is a large, brown plant that grows in the sea and is used in some foods and medicines

7 0
3 years ago
Imagine you are sitting in a very quiet room when suddenly behind you there’s a very loud bang, like a firecracker exploding.
lisov135 [29]

Answer:

A. I would be startled by the sudden noise and would probably take cover some wheres. B. My nerves in my ears would send a signal to my brain causing my twitching muscle fibers to react quickly and heart might stop for a moment.  C. The heart rate would increase the brain would be aware that there may be more sudden noises or events your adrenaline would be pumping and your quick twitch muscle fibers would probably be tense or contracted ready to make quick sudden movements if necessary and your hairs would stick up i guess as extra senses for if something would touch you.  

Explanation:

not to mention but by the time you are startled your senses would probably be heightened due to you being  aware of your surroundings such as you would be constantly looking around you would hear better and probably move quicker for a short period of time due to pumping adrenaline.

5 0
3 years ago
Which of the following statements is most accurate concerning the founder effect? A. It increases genetic variation
Fittoniya [83]
<span>Among the following statements shown, the most accurate concerning the founder effect is that (C) </span><span>It results when a small population breakers away from a larger one. Founder Effect is defined as the reduced genetic diversity which is most likely caused </span><span>when a population is descended from a small number of colonizing ancestors.</span><span>
</span>
3 0
3 years ago
Read 2 more answers
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