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labwork [276]
3 years ago
7

Scientists working in the fields of both genetics and archaeology have made discoveries that help us understand the origin of ma

ize. Which statement(s) best reflect the way(s) each discipline's work support evidence generated by the other?
Select all that apply.
a. Geneticists used DNA data to determine how long ago maize was domesticated. Archaeologists then verified the conclusion by dating maize microfossils.
b. Archaeologists first determined where maize was first domesticated. From there, geneticists calculated how long ago that was.
c. Genetics data pinpointed the likely location of the earliest maize domestication, which allowed archaeologists to find fossil evidence of early maize in caves.
d. Geneticists used archaeological data to identify how many genes controlled the changes from teosinte to maize.
Biology
1 answer:
Damm [24]3 years ago
4 0
I think the answer in this is c because it shows how the scientist worked in feilds
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Electrolytes such as sodium and potassium control blank by helping to maintain acid-base balance
yKpoI14uk [10]

Answer:

Electrolytes are nothing but minerals that have electric charge when it is mixed in liquid like blood. thus the sodium and potassium electrolytes will help regulate the nerve and muscle function. They also maintain the acid-base balance by regulating the electric charge on the cells and water flow across the membrane.

Explanation:

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3 years ago
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In an animal cell, what is the function of the lysosomes?
Alik [6]
<span><span><span>Release enzymes outside of the cell (exocytosis)</span>
which may serve the purpose of destroying materials around the cell.</span><span><span>Break-down 'digestion' of materials from inside the cell (autophagy)</span> 
i.e. by fusing with vacuoles from inside the cell. 
This could include digesting worn-out organelles so that useful chemicals locked-up in their structures can be re-used by the cell.</span><span><span>Break-down 'digestion' of materials from outside the cell (heterophagy)</span>
i.e. by fusing with vacuoles from outside the cell.
This could include breaking-down material taken-in by phagocytes, which include many types of white blood cells - also known as leucocytes. Specific mechanisms of heterophagy can be:<span><span>phagocytic - by which cells engulf extracellular debris, bacteria or other particles - only occurs in certain specialized cells</span><span>pinocytic - by which cells engulf extracellular fluid</span><span>endocytic - by which cells take-up particles such as molecules that have become attached to the outer-surface of the cell membrane.</span></span></span><span><span>Recycle the products of biochemical reactions that have taken place following materials being brought into the cell by endocytosis (general term for this 'recycling' function: biosynthesis) </span>
Different materials (chemicals) are processed in different ways, e.g. some structures may be processed/degraded within lysosomes and others are taken to the surface of the cell.</span><span>Completely break-down cells that have died (autolysis)</span></span>

In general, the functions of lysosomes involve breaking-down i.e. processing to 'make safe' or make use of, or removing from the cell e.g. by exocytosis, useless and potentially harmful materials such as old worn-out parts of the cell or potential threats such bacteria. Lysosomes can therefore be thought of as the rubbish disposal units within cel

8 0
3 years ago
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Two years of dry weather are followed by two wet years, causing the grass population to rise. How will the increase in grass aff
Ulleksa [173]

Answer is;

The animal population in the environment will increase.

This is because the grass is the main producer in a habitat. Its plentifulness directly influences that of the consumers up the food web. Increase in grass population means reduced competition for primary consumers and their population will therefore increase. This will also reduce competition for secondary consumers and tertiary consumers up the chain.  


8 0
3 years ago
Some stomach cells transport chloride ions inside and bicarbonate ions outside the cell via a same transport protein. Such a tra
Kryger [21]

Answer:

Such transport mechanism is called<u> Antiport.</u>

Explanation:

The production of hydrochloric acid (HCl) by the parietal cells requires the activity of the enzyme, carbonic anhydrase.In the presence of carbonic anhydrase  CO₂ and H₂O are converted  to HCO⁻   and H⁻.

The newly generated proton  (H+ )s transported into the lumen of the  stomach via the e H ₊₋K +ATPase (called the proton pump)Concurrently, HCO₃ ⁻  exits from the  basal surface (blood side) of the parietal cell via the HCO₃⁻   ₋ Cl antiporter.

The chloride ionneeded to form HCl, enters the parietal cell from the blood via the  HCO₃⁻₋Cl⁻ antiporter and exits at the luminal side by the Cl⁻ channel. Once within the lumen of the  stomach, cl⁻ combines with H⁺to form HCl.

The luminal K⁺ that is needed to maintain the activity of the proton pump(H⁺₋K⁻ATPase)enters the parietal cells from the stomach lumen by the H⁺₋K⁺ + ATPase and is then recycled back  into the lumen of the stomach by the K⁺ channel.

6 0
4 years ago
Whereas cloning is commonly used in studies of bacteria, Dolly the sheep was the only animal ever cloned.
nignag [31]

Answer:

False

Explanation:

I heard of that sheep before I leard about this in like 6th or fith answer is false

Two years later, researchers in Japan cloned eight calves from a single cow, but only four survived. Besides cattle and sheep, other mammals that have been cloned from somatic cells include: cat, deer, dog, horse, mule, ox, rabbit and rat

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3 years ago
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