Term 1

Question 1

Name 3 Properties of water

Answer 1

. Water is a polar molecule
. Water possesses the abilities of cohesion and adhesion
. Water has a high specific heat capacity

Question 2

Name the 9 organelles involved in a eukaryotic cell

Answer 2

. Nucleus
. 80s Ribosomes
. Plasma membrane
. Cytoplasm
. Rough ER
. Smooth ER
. Lysosomes
. Mitochondria
. Golgi body

Question 3

Name the 8 organelles involved in a prokaryotic cell

Answer 3

. Plasma membrane
. Nucleoid region
. Plasmid
. Flagella
. 70s ribosomes 
. Cell wall
. Cytoplasm
. Pili

Question 4

What is evolution

Answer 4

The process of cumulative change in the heritable characteristics of a species or population overtime

Question 5

What is a homologous structure

Answer 5

Physical features shared through evolutionary history with similar structures with different functions

Question 6

What is an analogous structure

Answer 6

Structures with similar functions but I’m not from the same evolutionary origin

Question 7

What is divergent evolution

Answer 7

The evolutionary pattern in which to species gradually become increasingly different from the common ancestral species occurs when closely related species diversify to new habitats.

Question 8

What is convergent evolution

Answer 8

The opposite of diversion evolution organisms independently evolve similar traits as a result of having to adapt to similar environments or ecological niches

Question 9

What is biogenesis

Answer 9

Biogenesis describes the principle that living things can only arise from other living things by reproduction not spontaneous generation

Question 10

Define analogy

Answer 10

Similarities and structural function that does not indicate there is a recent common ancestor between two organisms

Question 11

Explain nitrogen fixation

Answer 11

The conversion of atmospheric nitrogen into a form usable by plants and other organisms

Question 12

Explain nitrogen assimilation

Answer 12

The process by which plants and animals intake NO3 + ammonia

Question 13

Explain ammonification

Answer 13

The process in which organic nitrogen is decomposed and released as in organic nitrogen in the form of ammonia

Question 14

Explain nitrification

Answer 14

The process by which ammonia is converted to nitrites and then nitrates

Question 15

What factor may restrict the length of food chains

Answer 15

Energy loss between trophic levels

Question 16

List 4 density dependant factors

Answer 16

Food, competition, shelter, diseases

Question 17

List 4 density independant factors

Answer 17

Floods, fires, droughts, tornadoes

Question 18

Define a population

Answer 18

A group of organisms of the same species living in the same area

Question 19

Define a community

Answer 19

A group of populations occupying the same geographical area at the same time

Question 20

Define a saprotroph

Answer 20

An organism that feeds on nonliving organic matter known as detritus three excreting enzymes that digest dead material externally

Question 21

Define detritivore

Answer 21

Heterotrophs that obtained nutrient by consuming detritus through internal digestion

Question 22

Define biomass

Answer 22

Biomass is the total dry mass of organisms within an area or volume

Question 23

What are the 3 types of population distribution

Answer 23

Random, clumped and uniform