Bio

Question 1

What happens when a RBC (red blood cell) is placed in a dish of pure water that has been distilled of all solutes?

Answer 1

Burst

Question 2

Adaptive radiation is…

Answer 2

The emergence of multiple lineages from a single ancestral species

Question 3

The cortical reaction directly functions by

Answer 3

Formation of an impenetrable fertilization membrane

Question 4

Products of light-dependent reactions in photosynthesis are

Answer 4

-NADPH
-ATP
-O2

Question 5

DNA sequences with HIGHEST melting points are

Answer 5

DNA strands with more Cytosine & Guanine

Question 6

DNA fragments produced by restriction enzymes can be separated using

Answer 6

Gel Electrophoresis

Question 7

What do glycosidic bonds and phospodiester linkages have in common?

Answer 7

Formation of water molecules aka dehydration synthesis

Question 8

What is nitrogen fixation?

Answer 8

Microbial process responsible for conversion of atmospheric nitrogen (N2)
into ammonia (NH3) and ammonium (NH4)

Question 9

Thyroxine is

Answer 9

A non-tropic, direct hormone that increases rate of metabolism

Question 10

Species capable of surviving in dry environments with low water supply that produce highly concentrated urine, which organ is responsible for that?

Answer 10

Long loop of Henle

Question 11

Ultimate source of energy in ALL living organisms

Answer 11

The light energy from the sun

Question 12

Excessive bone resorption in osteoporosis can lead to…

Answer 12

Increased calcium levels in blood circulation

Question 13

Yeast in anaerobic environments will have a presence of

Answer 13

Ethanol

Question 14

Phospholipid membranes are made up of

Answer 14

Phosphate head and two fatty acids

Question 15

Which component of the phospholipid bilayer is hydrophilic?

Answer 15

Phosphate head

Question 16

Most to least permeable via phospholipid bilayer

Answer 16

Most
-Small hydrophobic molecules, like O2, CO2, N2 & steroid hormones
-small uncharged polar molecules , such as: water, urea, glycerol, and NH3
-large uncharged polar molecules, like glucose and sucrose
-ions
least

Question 17

Are charged molecules/ ions most or least able to diffuse through the permeable membrane?

Answer 17

Least

Question 18

Similar to cholesterol, found in prokaryotes

Answer 18

Hopanoids

Question 19

The glycocalyx is made up of

Answer 19

Carbs

Question 20

Glycocalyx functions

Answer 20

-adhere to cell
-protect from infection
-cover the pl;asma membrane of some animal cells
-acts as a marker for self recognition
NOT FOR STRUCTURAL SUPPORT

Question 21

Common cell surface markers used regularly for cell-cell recognition?

Answer 21

Glycoproteins

Question 22

Structural support in the membrane of plants?

Answer 22

Sterols

Question 23

Microtubules are made up of

Answer 23

TUBULIN

Question 24

A transmembrane protein is …

Answer 24

-an integral protein
-embedded in the cell membrane

Question 25

Role of denitrifying bacteria in nitrogen cycle

Answer 25

Coverts nitrates into atmospheric nitrogen or N2