Hemoglobin is

A. a digestive enzyme.

B. a tiny nutrient carried in capillaries.

C. an oxygen-carrying pigment in blood.

D. part of the vertebrate nervous system.

How do specific cell structures and organelles contribute to maintaining homeostasis in the cell?

30) Which of the following is true of enzymes? A) Enzyme function is increased if the 3 - D structure or conformation of an enzyme is altered.

Which of the following is on one end of all charged tRNA molecules

Which is a density-independent factor in controlling a population?

as isthmus is a narrow strip of land that is bordered by water on each side, and that connects two larger pieces of land. How does this differ from a tombolo?

Com relaç? o aos tecidos de armazenamento das plantas, denominados par? nquimas, em que tipos de plantas seriam úteis o armazenamento de água e o de ar?

Convert 21.0 cm to inches. Show your dimensional analysis setup

Analyze whether the tiger is at the same level and whether it obtains the same amount of energy in both the food chains.

How does a heavy metal plane fly?

The organelle that maintains pressure against the cell wall, so that the plant cell keeps it shape, is the (a) central vacuole. (b) rough endoplasmic reticulum. (c) smooth endoplasmic reticulum. (d) nucleus.