How many chromosomes are present in a human Ovum

The hydra has an incomplete digestive system. How does the hydra remove undigested food? A. It pushes out food through an opening, which is also used to bring in food. B. It pulls food out with its tentacles. C.

A species of bird lives in a tropical ecosystem and survives by eating fruit. The climate of this location changes very quickly, and the ecosystem becomes too cold for fruit trees to survive.

Oxidation of an amino acid via the citric acid cycle yields just as much ATP as oxidation of glucose. True or False

Which best describes the interaction between DNA and RNA during protein synthesis?

Which achievement would most likely be accomplished by a biologist? improvements in health care new uses for microwaves advancements in sound recording equipment developments in safer glass for car windshields

Which statement represent an abiotic environmental factor in an ecosystem? *The flower bud every spring. *The fish swim up the river to reproduce. *The fox eats meats in the meadow. The lake bottom is lined with rocks,

Which of these has NOT provided evidence showing that the continents have drifted over time? O A) rocks OB) fossils OC) earthquakes OD) geologic structures

All organic molecules contain the element carbon.

Which cell part contains directions for cell growth and reproduction? A. cell wall B. plasma membrane C. nucleus D. pores

Which of the following statements are incorrect? A. Stem vascular bundles in monocots are in a ring. B. Dicot roots are fibrous in structure. C. Pollen in monocots has one opening. D. Dicots have floral parts mostly in multiples of fours and fives.