Biology 3 Bim Exam (part 2)

Question 1

What dos it cause

Answer 1

Affects a person’s memory, thinking patterns and behavior

Question 2

Alzheimer in USA

Answer 2

It is the sixth leading cause of death, no cure

Question 3

What makes a transport issue

Answer 3

Nerve cells habe axons that can extend several feet from the main body of the cell

Question 4

Proteins

Answer 4

One type of macromolecule in a cell

Question 5

Function of proteins

Answer 5

One is to Help transport materials inside cells

Question 6

Amyloid precursor protein

Answer 6

Role is unclear, it seems to be crucial in transporting materials and info from the nerve cell to the axons

Question 7

Beta amyloid

Answer 7

forms the plaques, or deposits of protein, found around or in the nerve cells of alzheimer’s patients

Question 8

How do scientistists want to prevent this disease

Answer 8

They hope that by regulation the production of beta amyloid they will prevent the formation of plaques and halt the death of nerve cells in brain

Question 9

Virus

Answer 9

Is a strand of DNA or RNA sorrounded by a layer of protein that can infect and replicate in a host cell

Question 10

Host cell

Answer 10

The cell that gets infected

Question 11

Antibody

Answer 11

Protein that attach to a pathogen and make it useless

Question 12

Vaccines

Answer 12

Is a mixture of deactivated pathogens that increases the production of antibody

Question 13

Living or nonliving a virus

Answer 13

Nonliving, it does not have organelles

Question 14

What are the shapes a virus can have

Answer 14

Cylinder
Bacteriophage
Crystal
Sphere

Question 15

Latent viruses

Answer 15

Go through an inactive stage

Question 16

Examples of human diseases viruses can cause

Answer 16

Chicken pox, influenza, forms of pneumonia and common cold

Question 17

HIV

Answer 17

Human immundeficiency viruses, one latent virus that does not cause immeadiate symptoms

Question 18

Hiv affects

Answer 18

White blood cells

Question 19

Steps of a virus infecting a cell

Answer 19

1. Virus inserts its dna inti the host cell
2. Virus become latent or active
3. When it takes control and directs the cell it makes more viruses
4. New viruses are released and is destroyed

Question 20

What is alzheimer

Answer 20

Is a progressive disease that atracks nerve cells in the brain