If scientists identify an animal with bilateral symmetry and no segmentation, which phylum can it definitely not belong to?

a. Roundworms

b. Mollusks

c. Annelids

d. Flatworms

What is the female sex cell that results from meiosis?

What organism can ferment lactose but can't use citric acid for all their carbon needs

How can adding fertilizer to an ecosystem cause damage?

What does the energy come from that autotrophs use to make their own food

Are plasma membrane and cell membrane the same?

F there is no variation in shell thickness within a population of snails, and no mutations occur, what happens to shell thickness in response to crab predation?

Define naturally occurring in terms of mineral formation

Which of these nerves does not arise from the cervical plexus? median nerve greater auricular nerve phrenic nerve supraclavicular nerve?

An experimental protocol requires that a nutrient deficiency be induced to assess its effects on memory. What is the most appropriate study design to use to address this question? a. randomized controlled trial b. epidemiological study c.

Which of the following statements concerning enzymes is FALSE? A) They are usually, but not always, proteins. B) They function best at 37°C. C) They can be denatured if the pH of their environment is too high or too low.