Which statement is true of Y chromosomes?

A. Only men have them.

B. Women have two of them.

C. Only women have them.

D. All babies have them.

Which of the following describes the most important difference between invertebrates and vertebrates?

Similar structures are present in the embryos of fish, salamanders, turtles, chickens and pigs. In fish, these structures develop into gills but in the other organisms they either disappear or develop into other body parts later in embryonic

Which two important chemical processes are basically the opposite of each other? photosynthesis and decomposition photosyntheis and cellular respiration combustion and cellular respiration combustion and compaction

Which immune cells are disrupted when a child is infected with human immunodeficiency virus (hiv) ?

The ocellated frogfish is known for a specially adapted dorsal fin located just above the fish's mouth. The fin is stalk-like with a fleshy tip, and the frogfish can wiggle it to mimic the appearance and movement of small sea creatures.

Carbohydrates and lipids both contain carbon, hydrogen, and oxygen. How can you tell them apart by looking at the shape of their structures?

Piebald spotting is a condition found in humans in which there are patches of skin that lack pigmentation. The condition results from the inability of pigment - producing cells to migrate properly during development.

Explain the cellular functions that occur when antibiotics attack a bacteria cell.

Which is the most likely medical reason that a doctor might require a pregnant woman to get ultrasounds more frequently

The human activities in two locations are described below: Location A: Rampant use of plastic containers Location B: Excessive use of pesticides and fertilizers Which statement is most likely true? A.