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VLD [36.1K]
3 years ago
15

Name four cycles that help to recycle matter in the biosphere

Biology
1 answer:
Fynjy0 [20]3 years ago
8 0

Answer:

Nitrogen cycle

Carbon cycle

Sulfur cycle

Phosphorus cycle

Explanation:

<em>The material cycle refers to the pathway through which important materials in the biosphere take from their source of production to where they are utilized and back to their source of production. It can also be defined as the pathway by which important materials move between the living and non-living components of the earth.</em>

The important materials include nitrogen, carbon, sulfur, phosphorus, etc. The cycles that help to recycle these materials are named according to the name of the material. Hence, there is a nitrogen cycle, carbon cycle, sulfur cycle, and phosphorus cycle respectively.

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The following events are part of endochondral ossification. In which order do they occur?
devlian [24]

The order is calcification of matrix  >> cells differentiate into osteoblasts >> formation of the primary ossification >>  osteoclasts break down the spongy bone >> formation of the secondary ossification (5,3,1,2,4). It is a fundamental process.

<h3>What are osteoblasts?</h3>

Osteoblasts are cells of the bones, which act to generate bone matrix and modulate the process of mineralization of the skeleton.

Endochondral ossification refers to the mechanism through which the cartilaginous bones generate longitudinal growth.

This mechanism (endochondral ossification) is fundamental during fetal/embryo development.

Learn more about endochondral ossification here:

brainly.com/question/5325975

5 0
2 years ago
What’s the difference between a standing defense and an induced defense?
gizmo_the_mogwai [7]

The correct answer is: 4) Standing defenses are always present; induced defenses develop in response to a threat

Induced defense is defense that can be changed or invoked when needed. Induced defenses are slow to happen. When invoked, induced defense requires energy but otherwise doesn’t.

Standing defense is always there. It is use, for example when predation is a constant threat.

3 0
3 years ago
Aquatic biomes can be distinguished by chemical characteristics such as dissolved oxygen content and salinity and by physical ch
hoa [83]

Answer:

The five true statements are numbers: 1, 2, 5, 6 and 7

Explanation:

1. Temperature drives water movement in some lakes.

2. Tropical coral reefs generally exist in relatively shallow areas of the ocean.

5. Wetlands have slow water movement or no water movement and no turnover.

6. Estuaries are very productive and are used as breeding grounds by many species of fish.

7. A freshwater organism permanently attached to the substrate would be unlikely to survive and reproduce in an estuary.

7 0
3 years ago
One of your lab partners has followed the recommended procedure of running Gram-positive and Gram-negative control organisms on
andreyandreev [35.5K]

Answer:

Reduced in holding time of decolrization step and also used less Alcohol because decolrization step is important in Gram's staining.The decolorization step must be performed carefully. Otherwise over-decolorization may occur. This step is critical and must be timed correctly otherwise the CV stain will be removed from the Gram-positive cells. If the decolorizing agent is applied on the cell for too long time, the Gram-positive organisms to appear Gram-negative..

Explanation:

Gram' staining is a technique used in microbiology labs to differentiate between Gram's positive and negative

<u>Gram-positive bacteria :</u>Stain dark purple due to retaining the primary dye called CV in the cell wall.

<u>:Gram-negative bacteria </u>Stain red or pink due to retaining the counter staining dye called Safranin or neutral red.

There are four basic step in Gram" staining

1) Application of the Primary Stain to a Heat-Fixed Smear of Bacterial Culture

2)Addition of Gram's Iodine

3)<u>Decolorization with 95% Ethyl Alcohol:</u>Alcohol or acetone dissolves the lipid outer membrane of Gram-negative bacteria, thus leaving the peptidoglycan layer exposed and increases the porosity of the cell wall. The CV-I complex is then washed away from the thin peptidoglycan layer, leaving Gram-negative bacteria colorless.

On the other hand, alcohol has a dehydrating effect on the cell walls of Gram-positive bacteria that causes the pores of the cell wall to shrink. The CV-I complex gets tightly bound into the multi-layered, highly cross-linked Gram-positive cell wall thus staining the cells purple.

The decolorization step must be performed carefully. Otherwise over-decolorization may occur. This step is critical and must be timed correctly otherwise the CV stain will be removed from the Gram-positive cells. If the decolorizing agent is applied on the cell for too long time, the Gram-positive organisms to appear Gram-negative. Under-decolorization occurs when the alcohol is not left on long enough to wash out the CV-I complex from the Gram-negative cells, resulting in Gram-negative bacteria to appear Gram-positive.

7 0
3 years ago
what forms of RNA is responsible for carrying a formed amino to the protein assembly site during translation
aliina [53]

Answer:

tRNA is responsible for that

4 0
3 years ago
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