Microtubules of the mitotic spindle attach directly to each chromosome at the centromere
__________________ Indicate whether the statement is true or false.
F, kinetochore
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What is the key difference between choanoflagellates and sponges?
a) Choanoflagellates are strictly aquatic. b) Sponges are multicellular c) Sponges are assymetrical and do not have tissues d) Choanoflagellates have distinctive flagellated cells that function in suspension feeding.
Hummingbirds' small size allows them to hover while extracting nectar from various flowers. This same small size requires large amounts of calories to maintain body temperature because
a. the breeze from their flapping wings constantly cools them off. b. hummingbirds only eat at night. c. they have a large body mass relative to their surface area. d. hovering requires less energy than forward flight. e. they have a large surface area relative to their body mass.
Who, among the following, was the earliest
naturalist?
a. Darwin b. Plato c. Mendel d. Galileo e. Aristotle
Match each type of disease with an example
a. emerging disease b. reemerging disease 1. SARS virus 2. tuberculosis