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Bumek [7]
3 years ago
14

Gram-positive bacteria have a thick cell wall composed of

Biology
1 answer:
weeeeeb [17]3 years ago
6 0

Answer: peptidoglycan

Gram positive bacterias cell wall is composed of peptidoglycan, a polymer consisting of carbohydrates and peptides, which protects the bacteria.

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Where can you observe environmental changes that are forcing adaptation?
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Description

Since its inception, life on earth has had to adapt to changing environmental conditions - this represents a driving force of evolution.

This module examines how organisms detect and respond to changes in their environment, and reviews the different behavioural, physiological and molecular mechanisms underpinning environmental (stress) adaptation.

Understanding these organism-environment interactions forms the very foundations of ecology. Examples are provided from a range of organisms, but a specific focus is given to terrestrial invertebrates (insects) and plants.

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The process of “change”, and adaptation to these changes, will in turn be discussed across a broad spectrum of timescales. These include:

The requirement for rapid adaptation to potentially dramatic shifts in environmental conditions, e.g. when a parasite first enters its host

Longer-term changes and adaptations across seasonal timescales, e.g. hibernation/insect diapause

Adaptation on an evolutionary timescale, e.g. the ‘Red Queen’ hypothesis, across scenarios of past environmental changes, and extending out to current predictive climate change models

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Gain an in depth understanding of how organisms respond and adapt to changes in their environment.

Recognize that the term “environment” covers a continuum of spatial scales from molecular environments within cells, to broad-scale geographic environments and climatic zones.

Appreciate that adaptation to environmental change for an individual organism is transient and occurs across a temporal spectrum of seconds to seasons. For species, adaptation is long-term, but not fixed/permanent, and occurs across a timescale of generations.

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Become effective independent learners, capable of analysing and interpreting the scientific literature to help formulate and express their own ideas

Explanation:

hope it help to you read rhis to answer your question po

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