The hallmark feature of peroxisomal diseases is the presence of

A) hydrolases.
B) very long chain fatty acids.
C) long chain gangliosides.
D) an abundance of myelin.
E) amyloid plaques.


B) very long chain fatty acids.

Biology & Microbiology

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Genes that turn off or decrease the rate of cell division are known as ____________________ genes

Fill in the blank(s) with correct word

Biology & Microbiology

You notice mayfly larvae trying to emerge from a stream being slowed down when they reach the surface. Why might this be?

A) Because of the surface tension of the water. B) Because of the colder temperature at surface. C) Because of less oxygen at the surface. D) Because of higher flows at surface.

Biology & Microbiology

Suppose you perform a Gram stain of a mixed culture of Gram-positive and Gram-negative cells, and afterwards you realize that you omitted the iodine step. What would you expect to see if you observed the slide under the microscope?

a. colourless Gram-positive and pink Gram-negative cells b. purple Gram-positive and pink Gram-negative cells c. pink Gram-positive and pink Gram-negative cells d. colourless Gram-positive and colourless Gram-negative cells

Biology & Microbiology

Which features are found in organisms that have an incomplete digestive tract?

A. pharynx, digestive enzymes and diffusion of nutrients B. digestive enzymes, esophagus and diffusion of nutrients C. crop, digestive enzymes and diffusion of nutrients D. gizzard, salivary amylase and a pharynx

Biology & Microbiology