Homosexuality


A) is seen only in humans.

B) reflects the input of a number of genes and environmental factors.

C) is inherited from a mutation on the X chromosome.

D) is only the result of environmental influences.


B) reflects the input of a number of genes and environmental factors.

Biology & Microbiology

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a. hamburger b. beans c. corn d. rice e. more than one of these protein foods are complete

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Binding of a protein hormone may lead to formation

of a __________, which relays a signal into the cell. Fill in the blank(s) with the appropriate word(s).

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Which of the following includes lymphocytes?

A) White blood cells B) Platelets C) Albumin D) Red blood cells

Biology & Microbiology

Which statement best describes the now-discredited theories of Lamarck?

A) All life was created in the form we see today. B) Modern life forms are the descendants of past individuals who were the most fit. C) Organisms acquire traits during their lifetime and pass those traits on to their offspring. D) Earth is extremely old and has undergone many changes.

Biology & Microbiology