Buchnera aphidicola provides ________ to its aphid host that are essential to the survival of the insect.

A. carbohydrates
B. cellulases
C. vitamins
D. amino acids


Answer: D

Biology & Microbiology

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Which disorder presents symptoms of unusual language use, rigid, repetitive behavioral patterns, and a significant fixation on specific ideas or concepts?

a. Obsessive Compulsive Disorder (OCD) b. Attention Deficit Disorder (ADD) c. Autism Spectrum Disorder (ASD) d. Attention Deficit/Hyperactivity Disorder (ADHD)

Biology & Microbiology

Edward Jenner injected individuals with ____ lesions to protect them from ____

a. chickenpox; smallpox b. smallpox; chickenpox c. smallpox; cowpox d. cowpox; smallpox e. cowpox; chickenpox

Biology & Microbiology

In this figure of teleost internal anatomy, which structure, A, B, C, or D, is the swim bladder?

1.A 2.B 3.C 4.D

Biology & Microbiology

Which statement is NOT true concerning natural selection?

A. Natural selection acts on an individual's phenotype as it interacts with the environment. B. Natural selection has a strong effect on non-heritable traits. C. Reproduction plays an important role in the process of natural selection. D. Darwin popularized the term by contrasting it with artificial selection, or selective breeding.

Biology & Microbiology