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9 Weeks Exams > Biology > Flashcards

Biology Flashcards

1
Q

Homeostasis

A

When an organism maintains a stable internal condition

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2
Q

The work of scientists begins with

A

Careful observations

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3
Q

Controlled experiment

A

The experiment when one variable is changed at a time

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4
Q

How does science differ from other disciplines

A

Relies strictly on facts

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5
Q

When is a hypothesis useful

A

It is useful if it’s testable

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6
Q

Where may a hypothesis come from

A

Observations, prior knowledge & inferences

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7
Q

Spontaneous generation

A

The idea that life can arise from nonliving things

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8
Q

What is not a goal of science or how science works

A

Something that can’t be proven

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9
Q

Inference

A

Logical interpretation based on prior knowledge

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10
Q

Why do scientists need to publish the details of important work

A

So other scientists can replicate there work

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11
Q

A tissue is composed of what

A

Similar cells

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12
Q

Theory

A

A well tested or supported hypothesis

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13
Q

Osmosis

A

Diffusion of water between a selectively permeable membrane

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14
Q

Biology

A

The study of life

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15
Q

Ribosomes

A

Small particles in the cell where proteins are assembled

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16
Q

Chromosomes

A

Thread like structure in the nucleus that contains genetic information that is passed on through generations

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17
Q

Cell wall

A

Strong, supportive layer around the cell that protects the cell

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18
Q

Cell membrane

A

Thin,flexible barrier around the cell that controls what enter & leaves the cell

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19
Q

Characteristics of living things

A
  • made up of cells
  • reproduce
  • based on universal genetic code
  • grow & develop
  • obtain & use materials & energy
  • respond to their environment
  • maintain stable environment
  • change overtime
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20
Q

Nucleus

A

Center of cell, brain of cell

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21
Q

Metabolism

A

Builds up or break down materials as it carries out its life function

22
Q

Microscope

A

A tool that magnifies things that the human eye can’t see without help

23
Q

Compound light microscope

A

When light passes through the specimen uses to lenses to form an image

24
Q

Mitochondria

A

Powerhouse, gives cell energy

25
Q

Chloroplast

A

Gives cell energy

26
Q

Cell culture

A

When a group of cells arise from a single cell

27
Q

Cell fractionation

A

When a cell separates to other cell parts

28
Q

Golgi apparatus

A

When proteins are made, sorted, packaged & sent out

29
Q

Lysosomes

A

Gets rid of waste & other materials that don’t belong

30
Q

Three particles that make up an atom & their change & where are they found

A

Protons (+) found in nucleus
Neutrons (no charge)
Electrons (-) orbit nucleus

31
Q

Function of the cytoskeleton

A

Give cell shape

32
Q

Function of the cell wall

A

Surround & protect the cell

33
Q

What did Democritus believe about atoms

A

Atoms can’t be divided

34
Q

How do you find the number of protons, neutrons & electrons

A

Protons & electrons same as atomic number to find neutrons atomic mass-atomic number

35
Q

What doesn’t have a cell wall

A

Animal cell

36
Q

Difference between prokaryotes & eukaryotes

A

Prokaryotes do not have a nucleus

Eukaryotes have a nucleus

37
Q

Isotopes

A

Different number of neutrons

38
Q

Species

A

A group of organisms so similar to one another that they can breathe & produce offspring

39
Q

Populations

A

Groups of individuals that belongs to the same species & live in a define area

40
Q

Ecology

A

Scientific studies of organisms & their surroundings & organisms

41
Q

Biome

A

A group of ecosystems that have the same climates & similar communities

42
Q

Biosphere

A

Contains combined portions where all life exists including land,water & air

43
Q

Community

A

Different populations that lived together in a defined area

44
Q

Aton Van Leeuwenhoek

A

First person to use a microscope to study nature

45
Q

Robert Hooke

A

Discovered cells

46
Q

Convalent bond

A

Share electrons

47
Q

Ionic bond

A

Transfer electrons

48
Q

Autotrophs

A

Producer

49
Q

Heterotrophs

A

Consumer

50
Q

Food cHain

A

Series of steps where energy is transferred by animals that eat other animals for energy for energy

51
Q

Food web

A

All food chains combined

52
Q

Goal of Science

A

The goal of science is to investigate & understand the natural world, to explain events in the natural world & to use those explanations to make useful predictions

9 Weeks Exams (2 decks)

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