Bio/Biochem

Question 1

Astrocytes

Answer 1

nourish neurons and form blood brain barries

Question 2

Microglia

Answer 2

phagocytic cells that ingest pathogens in CNS

Question 3

Oligodendrocytes

Answer 3

Produce Myelin in the CNS

Question 4

Ependymal Cells

Answer 4

Physical support for brain barrier

Question 5

Describe Process of RT-PCR

Question 6

Codominance

Answer 6

2 Dominant alleles are simultaneously expressed, equal expression ex) Blood Type in humans

Question 7

Incomplete Dominance

Answer 7

Mixture of 2 phenotypes, typically for heterzygotes. ex) white +red flowers= pink flowers

Question 8

Mendel’s First Law

Answer 8

Law of segregation, alleles for same gene segregate during Meiosis I

Question 9

Mendel’s Second Law

Answer 9

Law of Independent Assortment, alleles sort independently in Meiosis II, increase in genetic diversity

Question 10

What is the role of cholesterol in the cell membrane?

Answer 10

It is a fluidity buffer. In high temperatures it decreases fluidity. In lower temperatures it increases fluidity. Assume the same applies for lipid rafts -decrease in membrane fluidity in normal conditions

Question 11

Name the anterior pituitary hormones

Answer 11

FLAT PEG, FSH, LH, ACTH, TSH, Endorphins, Prolactin, GH

Question 12

Name the posterior pituitary hormones

Answer 12

ADH and Oxytocin only!