Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

science > chen unit test > Flashcards

chen unit test Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

how to tell if a substance is organic or inorganic

A

if it molds or has carbon it’s organic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

role of carbohydrates

A

energy source for metabolism

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

lipids role

A

storage of unused chemical energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

proteins role

A

Structural molecule for body that helps chemical reactions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Difference between trace elements and macronutrients

A

trace element- amount of minerals needed per day
macronutrient - carbs, lipids, proteins

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what are the ingredients in fertilizer?

A

nitrogen, phosphorus, potassium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is biomagnification?

A

Toxicity concentration increases as it moves at the food chain.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

how do incects become resistant to pesticides?

A

overtime insects will become used to the pesticides and adapt rothem and it won’t harm them anymore

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are acids like

A

red, sour, tart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what are bases like?

A

blue, bitter, slippery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what happens to the acidity of a solution as a pH value decreases

A

When pH value decreases, the substance becomes more acidic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Equation for neutralization

A

acid+base=neutral (7)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

how do you neutralize an acid spill and base spill

A

pour acid on base and base on acid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is acid rain?

A

Pollution that goes into the air and condenses into clouds to make toxic rain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what is acid rain made of

A

Carbon, nitrogen, Sulfer (burning materials)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Effects of acid rain

A

Destroys, lakes and streams, reduces production of crops, decay on buildings/statues

17
Q

how many millilitres of toxin must be added to 1,000,000 mL of water to produce a 9 PPM solution

A

9ml

18
Q

What is toxicity?

A

Ability of a chemical to cause harm to an organism

19
Q

What is LD50?

A

lethal dose 50
dose of a chemical that will kill 50% of the population it’s applied to

20
Q

what is the relationship between temperature in oxygen concentrations

A

Cold Water water holds more dissolved oxygen

21
Q

What are bio indicators?

A

Organisms that indicate the health of environment

22
Q

Relationship between pollution levels, and biodiversity

A

High pollution levels equals biodiversity decrease

23
Q

what is the relationship between oxygen concentration, and biodiversity

A

High oxygen concentration equals more biodiversity

24
Q

what is the relationship between oxygen concentration in the number and types of ivertebrates found in a river

A

higher oxygen equals more invertebrates

25
Q

difference between biodegradable or nonbiodegradable

A

Biodegradable can break down in an environment and non biodegradable takestime/doesn’t

26
Q

what environmental conditions are required for the optimal decomposition of biodegradable materials

A

Moisture,heat

27
Q

which nutrients are added to lake or pond when it receives agricultural run-off

A

phosphates and nitrates

28
Q

what is the result of phosphates and nutrients entering water

A

algal blooms and poor water quality

29
Q

completion:

A

increased nutrients=increase algea=increase bacteria=decrease O2=decrease trout

30
Q

four r’s

A

Reduce, recycle, reuse, rethink

31
Q

characteristics of a well constructed sanitary landfill

A

Gravel, Sand, clay, impermeable liner

32
Q

why should we not incinerate our waste

A

The chemicals in pollute the air from burning

33
Q

what would u find in a river with low biodiversity

A

High acidity, high nitrate levels, phosphate levels, low oxygen levels and high pollution

34
Q

chronic toxicity

A

Happens after multiple exposures to the chemical

35
Q

acute toxicity

A

acute toxicity Happens after only one exposure to the chemical

36
Q

Persistent pollutant

A

Does not break down

37
Q

Nonpersistent pollutant

A

Breaks down

38
Q

Point source

A

Clear were the pollution came from

39
Q

non point source

A

Can’t really be traced back with the pollution came from (spread wide)

science (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions