Cell Biology Answers

Match each of the following molecules involved in cell communication with the function that best describes it.

1. G protein-coupled receptor
2. Receptor tyrosine kinase
3. Ligand-gated ion channel
4. Protein kinase
5. Cyclic AMP
6. Adenylyl cyclase
7. Hormone
8. Neurotransmitter

A) Protein which removes phosphates from proteins in a process called dephosphorylation

B) One of the most widely used second messengers

C) Molecule involved in long-distance signaling in plants and animals

D) Protein acts as an on/off switch: if GDP is bound to the protein, the protein is inactive.

E) Protein which converts ATP to cAMP in response to an extracellular signal

F) A messenger molecule that travels only short distances

G) This protein can trigger multiple signal transduction pathways at once

H) Protein which transfers phosphates from ATP to protein in a process called phosphorylation

I) When a signal molecule binds to this receptor, it allows specific ions (such as Na⁺ and Ca²⁺) through a channel in the receptor.

From the perspective of the cell receiving the message, what are the 3 stages of cell signaling are?

Name the valves that controls the passage of blood from an atrium to ventricle

In order for you to understand science words better you should know a way on how to define the words in context. The way the word is used gives you a clue as to its meaning. Find the definitions of the italicized words.

1. One of the capabilities of cells is its ability to divide .

2. Genetics is the study of heredity and variation.

3. Chromosomes carry hereditary information, known as DNA.

4. Cell division involves the division of nuclear materials followed by the division of cytoplasm.

5. All living things grow because your cells get bigger and number of your cells gets larger.

what characteristics distinguish members of the kingdom of archaea from the members of the kingdom eubacteria

Why do doctors say ~the immune system is attacking itself~ how, why, pictures, confirmation and how do they arrive at this hypothesis

Write a comprehensive note on the transport of various substance across the plasma membrane?

How have biologists been able to study the different organelles

what are the benefits of reproduction by meiosis?

DNA is the genetic material that makes up living things, and folic acid plays an important role in the formation of DNA. Jon wants to study the effect of folic acid on DNA formation in microbes. Which statement accurately describe the variables in this study?