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masha68 [24]
3 years ago
11

What caused the tree trunks to turn from light to dark in color?

Biology
1 answer:
Harrizon [31]3 years ago
3 0
It was pollution from the industrial revolution that caused tree trunks to turn from light to dark in color.
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What role did mycorrhizae play in the transition of plants to land?
Colt1911 [192]
Mycorrhizae are associations between fungi and the roots of plants, where the Fungi provides minerals to the plant. It enabled plants and fungi to be the first organisms to invade land successfully 430 million years ago. In most cases the relationship between host plants and the mycorrhizal fungus is mutualistic, or mutually beneficial. The Mycorrhizal fungi come into direct contact with plant roots and with the soil, adding to the plants ability to gather nutrients and water from the soil through the fungus. 
5 0
3 years ago
___ moves molecules by going from an area of a low concentration gradient to a high concentration gradient
kumpel [21]

Answer:

That is active transport.

8 0
3 years ago
the salivary glands, stomach, and pancreas secrete ____________ enzymes to break down triglycerides into monoglycerides, fatty a
likoan [24]

The salivary glands, stomach, and pancreas secrete<u> lipase enzymes</u> to break down triglycerides into monoglycerides, fatty acids, and glycerol.

Lipases are a set of water-soluble enzymes that hydrolyze substrates such as triglycerides and phospholipids, have a similar structure and are essential in the metabolism of lipoproteins and lipids.

That is, the function of lipase enzymes is to hydrolyze triglycerides to generate diglycerides, monoglycerides, fatty acids and glycerol.

<u>About lipase enzymes</u>:

  • It acts on the neutral fats in the diet, splitting them into triglycerides or diglycerides and these to monoglyceride, which is the most easily absorbed fatty compound.

  • The action of lipase is much more manifest on triglyceride, and it is also much faster the higher the molecular weight of the fatty acid present.

  • It acts on the surface and in an aqueous medium, the emulsifying agent represented by bile salts is essential for optimum effectiveness.

  • They are widely distributed, with a presence in the animal and plant kingdoms and even in the simplest unicellular organisms.

Therefore, we can conclude that the salivary glands, stomach, and pancreas secrete lipase enzymes to break down triglycerides into monoglycerides, fatty acids, and glycerol.

Learn more here: brainly.com/question/15737562

8 0
2 years ago
A young mother brings her 4-year-old in to the pediatric clinic with a mild fever and a red, spotty rash that is beginning to fa
Ulleksa [173]
<span>Group A beta-hemolytic streptococcal causes rheumatic carditis. The most common age group for this inflammation are children 5 through 15 years old. Symptoms include chest pain, swelling of the ankles, a fever, joint pain and a sore throat. People with this inflammation should use antibiotics to cure it.</span>
4 0
3 years ago
Persons with __________ blood have neither antigen a nor antigen b on their red blood cells but have antibody anti-a and antibod
Flura [38]

Persons with O blood have neither antigen a nor antigen b on their red blood cells but have antibody anti-a and antibody anti-b in their plasma.

ABO blood grouping was discovered by Austrian scientist Landsteiner. It consist of four blood groups- A, B, AB, & O.

Red blood cells have certain extension of the proteins that are called antigen. Two types of antigens are there antigen a & b. The RBCs which have a particular antigen will not have the antibody against the same.

Blood Group A has antigen A and antibody B. Blood group B has antigen B and antibody A. Blood group AB has both antigen and no antibodies while blood group O has no antigen and antibody A & B.

To learn more about red blood cells here

brainly.com/question/17890844

#SPJ4

8 0
1 year ago
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