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Science Form 1 - Biology > Cells > Flashcards

Cells Flashcards

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1
Q

stores nutrients and waste products

A

central vacuole

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2
Q

it provides structural support

a. plasma membrane
b. nucleus
c. golgi bodies
d. cell walls

A

d. cell walls

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3
Q

coined the term “cell”

A

Robert Hooke

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4
Q

carries out photosynthesis in plant cells

A

chloroplasts

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5
Q

All organisms are composed of one or more cells. True or False.

A

True.

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6
Q

What is the smallest unit of organisms?

A

Cells

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7
Q

What are the four common components all cells share?

A
  1. Plasma Membrane
  2. Cytoplasm
  3. DNA
  4. Ribosomes
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8
Q

Cell is the basic unit of structure and organization. True or False.

A

True.

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9
Q

Are cells grouped into prokaryotes and eukaryotes?

A

Yes.

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10
Q

Concluded that all animals are made of cells

A

Theodor Schwann

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11
Q

3 statements of cell theory.

A
  1. All organisms are composed of one or more cells.
  2. Cell is the basic unit structure and organization.
  3. All cells come from pre-existing cells.
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12
Q

Eukaryotes are the simplest type of cell. True or False.

A

False. Prokaryotes are the simplest type of cell.

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13
Q

comprises cytosol and organelles

a. nucleus
b. ribosomes
c. cytoplasm
d. perixome

A

c. cytoplasm

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14
Q

Who contributed to the first two statements of the cell theory?

A

Schleiden and Schwann

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15
Q

All Prokaryotes has no definite nucleus. True or False.

A

True.

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16
Q

Which has true nucleus? Prokaryotes or Eukaryotes.

A

Eukaryotes.

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17
Q

produces protein for the cell and can either be floating around the cytoplasm or attached to the endoplasmic reticulum

A

ribosomes

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18
Q

made the first compound microscope

A

Zacharias Jansen

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19
Q

present in plant cells and act as lysosomes in plant cells

A

central vacuole

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20
Q

Most Eukaryotes are unicellular but there are some that are multicellular. True or False.

A

False. Most Eukaryotes are multicellular but there are some that are unicellular.

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21
Q

transports large molecules inside the cells

A

smooth endoplasmic reticulum

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22
Q

Some cells come from pre-existing cells. True or False

A

False. All cells come from pre-existing cells.

23
Q

discovered bacteria (which he called animalcules)

A

Anton Van Leeuwenhoek

24
Q

concluded that all plants are made of cells

A

Matthias Schleiden

25
Q

composed of membranous sacs which are responsible in storage of various substances in the cell

A

vacuole

26
Q

All prokaryotes are multicellular.

A

False. All prokaryotes are unicellular.

27
Q

Eukaryotes contain organelles which are membrane-bound structures that each have a specific function. True or False.

A

True.

28
Q

Examples of Prokaryotes are: plants, animals, protists, and fungi. True or False.

A

False. Plants, animals, protists, and fungi are examples of eukaryotes.

29
Q

Plant and Animal cells does not have cell walls. True or False.

A

False. Plants have cell walls but animals don’t.

30
Q

Eukaryotes can only reproduce sexually. True or False.

A

False. May use either asexual or sexual reproduction depending on the organism’s complexity.

31
Q

detoxifies many poison that may enter cell. Protects the cell from its own production of hydrogen peroxide.

A

peroxisome

32
Q

Fixed shape. Plant cell or animal cell.

A

Plant Cell. Animal cell - irregular shape.

33
Q

Plant cell - few, small vacuole
Animal cell - one big vacuole (central vacuole)
True or False.

A

False.
Plant cell - one big vacuole (central vacuole)
Animal cell - few, small vacuole

35
Q

powerhouse of the cell

A

mitochondrion

36
Q

Where centrioles are present. Plant cell or animal cell.

A

Animal Cell. Plant cell have no centriole.

37
Q

Plant cell and animal cell both have lysosomes. True or False.

A

True. Animal cell and plant cell have lysosomes but for plant cell it has very few lysosomes.

38
Q

Flexible boundary between cell and its environment

A

Plasma membrane

39
Q

Cytoplasm helps maintain homeostasis inside the cell through selective permeability. True or False.

A

False. Plasma membrane helps maintain homeostasis inside the cell through selective permeability.

40
Q

Rigid covering that protects the plant cell and mainly composed of cellulose

A

Cell walls

41
Q

gel-like substance enclosed within the cell membrane

A

cytosol

42
Q

microtubule-organizing center

A

centrosome

43
Q

concluded that cells came from other cells

A

Rudolf Virchow

44
Q

no ribosomes attached.

A

smooth endoplasmic reticulum

45
Q

Have no plastids. Plant cell or animal cell.

A

Animal cell. Plants have chloroplasts (plastids).

46
Q

processes, packages, and distributes proteins and lipids

A

golgi bodies

47
Q

structure inside the nucleus where the ribosomes are synthesized

A

nucleolus

48
Q

Prokaryotes reproduce asexually through cell division (binary fission). True or False.

A

True.

49
Q

contain digestive enzymes and its function is intracellular digestion

A

lysosomes

50
Q

where most ribosomes are attached.

transports proteins produced by ribosomes.

A

rough endoplasmic reticulum

51
Q

it houses the cell’s DNA and directs the synthesis of ribosomes and proteins. Also, control center of all cellular functions.

a. nucleus
b. nucleolus
c. ribosomes
d. centrosome

A

a. nucleus

51
Q

it plays the function lipid synthesis and steroid hormones synthesis.

A

smooth endoplasmic reticulum

52
Q

Nucleus it the most prominent organelle in prokaryotic cells. True or False.

A

False. Nucleus it the most prominent organelle in eukaryotic cells.

54
Q

carries our oxidation reactions that break down fatty acids and amino acids

A

peroxisome

Science Form 1 - Biology (6 decks)

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