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maxonik [38]
3 years ago
12

I only need one sentence. Will mark brainliest.

Biology
1 answer:
storchak [24]3 years ago
3 0

Answer:

  1. The Biuret's solution will impart a dark violet blue to a pinkish purple color to the solution if positive.
  2. Benedict's indicator will turn the solution aqua blue if negative or yellow/green/brick red if positive.
  3. Iodine will turn the solution blue to black if positive.
  4. The paper bag will have a greasy/oily residue upon application of the sample.

Explanation:

  • The Biuret's test is widely used for the identification of proteins in whole milk samples.
  • The Benedict's solution is an indicator of the presence of simple sugars such as glucose.
  • Iodine is a popular indicator of starch(complex sugar)
  • The paper bag test indicates the presence of lipids or fats.
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Which events take place in the light-dependent reactions of photosynthesis?
borishaifa [10]

The correct answer is : Light energy is captured by plants; light energy is converted to chemical energy.

In the process of photosynthesis, special pigment molecule called chlorophyll can capture the energy of the light, more specifically the photon. When a particle of light (a photon) with a specific energy reaches this pigment in the leaves of plants, the energy is transferred from the particle to the molecule, and the molecule becomes excited. This is the phase where the energy of the light is captured and transformed into chemical energy that can later be used to make sugars.

All of the later chemical processes that transfer the energy from the excited chlorophyll to the sugar molecules are not dependent on the light and can happen during the night as well.

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3 years ago
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An elephant has a long, powerful trunk. According to the ideas of Lamarck, how did the trait of long, powerful trunks develop in
Lubov Fominskaja [6]

Answer:

Gradually, as generations of elephants continued to selectively use and develop their trunks.

Explanation:

Jean-Baptiste Lamarck was  famous French Naturalist. He was a soldier, a biologist and an academic. He gave an early theory of evolution known as the theory of Lamarckism.

It was Lamarck who first believed that elephants earlier had small trunks. But eventual when there was scarcity of food and water, the elephants stretched out its trunk to reached out for food such as trees and also water. And as a result their offspring inherited long and powerful trunk.

In his theory of Lamarckism, he believed that the species passes on its traits to the offspring which they acquired through their use in their lifetime. In this case, the elephants might have used their trunks in such a way that they became long and strong over time and they passed tis trait to their babies.

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3 years ago
_______ may have formed the oxygen released into the early atmosphere.
MissTica
Cyanobacteria or simply known as blue-green algae may have formed the oxygen into the early atmosphere. This is because these micro-organism has the capability to photosynthesize wherein they can produce oxygen and carbohydrates. In fact, all the plants contribute in the fomation of oxygen.
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3 years ago
Help me pls!!!! ASAP
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Answer: 2. The rubbish is separated first by hand, then through flotation (separating plastic and paper), magnets, and an eddy current method, which pings off aluminium and other metals. A laser beam identifies each type of plastic as it passes on a conveyor belt, then a timed jet of air pushes it into the appropriate bin. There are two broad types of recycling operations: internal and external. Internal recycling is the reuse in a manufacturing process of materials that are a waste product of that process. Internal recycling is common in the metals industry, for example. 3. Repurpose Glass, Plastic and Cardboard Containers. One of the best uses for empty plastic soda bottles is as a planter for flowers and herbs. ...

Designate a Kitchen Drawer for Plastic Bags. ...

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Explanation:

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3 years ago
Which is the best hypothesis for the scientific question “How does light intensity affect the rate of photosynthesis?”
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As light intensity increases, the rate of photosynthesis increases, whereas a decrease in light intensity decreases the rate of photosynthesis, because light is a necessary factor for photosynthesis
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