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4 years ago

Explain why stress - strain curve usually has two segments

Biology

2 answers:

shepuryov [24]4 years ago

6 0

Answer:

The first segment is Elastic elongation and another one is plastic deformation.

Explanation:

The first mode is elastic elongation where once the load is removed, the piece will go back to its original position. This is shown on the curve as the linear region at the beginning.

The second mode is the plastic elongation where once the load is removed the piece will not go back to its original position. The onset of plastic region is shown on the curve when the elastic region becomes curved instead of straight.

Svet_ta [14]4 years ago

5 0

My Answer: A stress-strain curve usually has two segments: a straight segment and a curved segment. Low stresses produce the straight segment, which represents the elastic strain of a material. If the elastic strain is reduced to zero, the deformation disappears.

Hope I helped! :D

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What is a biological tropism?

kondor19780726 [428]

Answer:

Explanation:

Living organisms adapt to their moves and positions in response to the environmental changes for their protection or to their advantage. When an entity reacts to the changes in its surroundings, it is referred to as stimulus while the reaction to the stimulus is referred to as a response. Common stimuli are sound, light, air, heat, smell, taste, water and gravity.

Think of burning your finger of fracturing your bone without any pain sensation. It may certainly sound like a superpower or an ideal situation, however, when it comes to the standpoint of survival, it can be disastrous.

It is a characteristic behaviour of living entities to respond to stimuli with the intervention of the Nervous System. It is an organ system ascribed to send signals from the spinal cord and the brain throughout the body and then back from all the body parts to the brain. Neuron acts as the mediator and is the basic signalling unit of the Nervous system.

Pain is the body’s way of letting us know that something is not right. It can prevent further injuries or push us to seek medical attention. Moreover, all of this is possible because humans can respond and react to stimuli due to control and coordination among the various organs and organ systems.

Control and Coordination in simple multicellular organisms take place through only the Nervous system which coordinates activities of our body. It is the control system for all our actions, thinking, and behaviour.

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2 years ago

Using technology to modify the genes of a plant making it resistant to disease is an example of which type of genetic engineerin

LiRa [457]

Answer:

I think it is B) human genome project or C) harmful mutations

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3 years ago

A pregnant woman found a large variety of microbes that can be vertically transmitted. She is making a list for her doctor to as

natta225 [31]

Answer:

Hyphae: Cell filaments,mostly septate

Mycelium: Mass of hyphae

Molds: mostly filamentous, Yeasts: non-filamentous,unicellular fungi

Budding yeasts divide asymmetrically.

Dimorphic fungi: yeast-like at 37°C, mold-like at 25°C.

Fungal spores are reproductive spores (unlike bacterial spores). Used to differentiate fungi.

Growth in acidic, low-moisture, high osmotic pressure environments.

The thallus (body) of a mold or fleshy fungus consists of long filaments of cells joined together; these filaments are called hyphae. Hyphae can grow to immense proportions. The hyphae of a single fungus in Oregon extend across 3.5 miles.

In most molds, the hyphae contain cross-walls called septa (singular: septum), which divide them into distinct, uninucleate (one-nucleus) cell-like units. These hyphae are called septate hyphae. In a few classes of fungi, the hyphae contain no septa and appear as long, continuous cells with many nuclei. These are called coenocytic hyphae. Even in fungi with septate hyphae, there are usually openings in the septa that make the cytoplasm of adjacent "cells" continuous; these fungi are actually coenocytic organisms, too.

Mycelium a mass of long filaments of cells that bring and intertwine, typically found in molds.

Explanation:

3 0

3 years ago

If pressure per square inch increases by 14.5 pounds for every 33 feet below the ocean surface how much pressure would be felt I

Arada [10]

Answer:

b) 58 pounds

Explanation:

132/33= 4

4*14.5= 58

7 0

3 years ago

Why are the roles in different ecosystems the same but the species that fill them often different?

bearhunter [10]

Answer:

The ecosystems are different

Explanation:

Every ecosystem needs most of the types, such as producers and herbivours, but different animals need different climates, such as cacti need deserts, yet fish need water, they can't( Or shouldn't ) Be in the same ecosystem due to thier needs.

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3 years ago