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Softa [21]
3 years ago
9

The thin mantle of life that covers the Earth is called a(n): a. ecosystem. c. population. b. biome. d. biosphere.

Biology
1 answer:
xxMikexx [17]3 years ago
5 0
 the answer is d. biosphere
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What is a neutron?
AnnyKZ [126]

Answer: uncharged particle found in atomic nuclei

Explanation: A neutron is one of the three components of an atomic nucleus. A neutron has no charge that is, it is unchanged. An atom has three components: electrons, protons and neutrons. The neutrons and protons are located inside the nucleus of an atom while electrons are found outside the nucleus where they revolve round the nucleus. The number of neutrons and protons in a nucleus of an atom makes up the mass number of an element.

7 0
3 years ago
Cellulases are enzymes capable of breaking down cellulose, releasing molecules of glucose. to which category of organic macromol
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Cellulose belongs to carbohydrates.  

Cellulose is classified as a carbohydrate, a polysaccharide, as they are formed of the glucose monomers chain. It is the prime component in the walls of the cells of plants, assisting the plants to remain upright and stiff. Humans cannot digest cellulose due to the absence of cellulase, however, it is essential in the diet as fiber.  

However, the animals like sheep, cows, and horses can digest cellulose that is why they can acquire nutrients and energy they require from the grass.  


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3 years ago
What is natural selections role in evolution
Nezavi [6.7K]

Explanation: The basic idea of biological evolution is that populations and species of organisms change over time. ... Darwin also suggested a mechanism for evolution: natural selection, in which heritable traits that help organisms survive and reproduce become more common in a population over time.

3 0
3 years ago
What would happen if the process of mitosis skipped metaphase?
Liono4ka [1.6K]
Mitosis is a division of a single cell into two identical daughter cells. It consists of four phases: prophase, metaphase, anaphase and telophase and cytokinesis. During metaphase, sister chromatids join together in the middle of the cell, so that during anaphase they can separate from each other to the opposite sides of the cells where they will represent future "nucleus" of the daughter cells. However, is metaphase was skipped, sister chromatids would not join in the middle, and consequently, they would not separate in anaphase. One of the possible consequences is that mitosis will stop and the cell would not divide. On the other hand, it could lead to unequal distribution of chromatids, so one cell will get both copies of chromosomes and the other will lack in chromosomes, which is lethal in both situations. 
7 0
3 years ago
Transpiration in plants requires all of the following except
olga55 [171]

Answer:

active transport through xylem cells.

Explanation:

Transpiration in plants is the loss of water from the aerial organs in the form of steam, it is a natural consequence of the fundamental anatomical characteristics of plants. The cells of the aqueous parenchyma or mesophyll have a wet surface in contact with the intercellular spaces and these, in turn, communicate with the external environment through the stomata, so that the water from the cells of the evaporating mesophyll passes into the air. through the intercellular spaces, and on the other hand the water lost by the leaf parenchyma is replaced by that which comes from the roots through the conductive vessels of the xylem.

The flow of water in the plant depends on the internal anatomy of the plant and the properties of the water. As the transpiration process of the plant becomes more intense (the flow of water through the xylem is greater) the pressure of the xylem decreases, then the difference between atmospheric pressure and xylem pressure increases, which favors the perspiration process.

6 0
3 years ago
Read 2 more answers
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