The MARGIN the bacterial colony in the image below is best described as:

Question

BlackTom AI · Accepted Answer

The question asks to identify the margin description of the bacterial colony in the image. Carefully examining the edge, you can see a series of rounded lobes that extend outward from the main body, giving the colony a wavy, lobed contour.
Option a: irregular – This would imply an uneven, non-uniform edge without distinct lobes or smooth projections. The image shows defined lobes rather than a completely jagged or varied outline, so this is not the best description.
Option b: lobate – This matches the observed scalloped or lobed margin where semi-circular projections extend from the edge, forming distinct lobes. This is the most accurate descriptor for the pictured margin.
Option c: pulvinate – Pulvinate describes a margin that is convex and cushion-like but not lobed; the edge would be smoothly curved without outward projections. The colony in the image has clear lobes, not a simple dome.
Option d: erose – An erose margin is jagged or irregular with tooth-like, sharp projections. The image’s lobes appear rounded rather than sharp teeth, so erose is not appropriate here.
Option e: entire – An entire margin is smooth and unbroken, with no lobes or indentations. The colony’s edge clearly shows lobulation, so entire is incorrect.
In summary, the edge pattern shows distinct, rounded outward projections consistent with a lobate margin, while the other options describe margins that are smooth (entire), jagged (erose), dome-like without lobes (pulvinate), or irregular without defined lobes (irregular).

The MARGIN the bacterial colony in the image below is best described as:单项选择题

类似问题

Which term describes the shape and appearance of colonies on a plate?

The ELEVATION the bacterial colony in the image below is best described as:

The FORM the yellow bacterial colony in the image below is best described as:

Explain the concept of colony morphology in microbiology and its relevance for identifying and differentiating bacterial species

Why can we not use areas of confluent, or dense, bacterial growth on solid media plates to characterise colony morphology?

Question at position 8 An excess of growth hormone (GH) before puberty can result in the development ofgigantism.Graves' disease.acromegaly.pituitary dwarfism.Clear my selection

Question at position 6 The most abundant supporting cells in the central nervous system are called Question Blank 1 of 1[input].

Question at position 5 In the eye, the lens functions tofocus light on the retina at the back of the eye.protect the surface of the eye.increase vision in low-light conditions.move the eye side to side.Clear my selection

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单