science cells and structures Flashcards

1
Q

What are the 6 characteristics of all living things?

A
  • Reproduce
  • Changes to its environment
  • Adapt/adaptations
  • Needs food/energy
  • Grows and develops
  • Made of cells

These characteristics define what constitutes a living organism.

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2
Q

Define structure in the context of biology.

A

Body part or organ

Structure refers to the physical components of an organism.

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3
Q

What is the function of an organelle?

A

The specific task it carries out

Organelles are specialized structures within a cell that perform distinct functions.

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4
Q

What is adaptation?

A

Functions to survive in an environment

Adaptation refers to the changes an organism undergoes to better survive in its habitat.

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5
Q

What is a cell?

A

Basic unit of structures/life

Cells are the fundamental building blocks of all living organisms.

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6
Q

Label the control centre of a cell.

A

Nucleus

The nucleus is responsible for controlling cell activities and containing genetic material.

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7
Q

What part of the cell is compared to the factory floor?

A

Cytoplasm

Cytoplasm is where most cellular processes occur, similar to a factory floor.

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8
Q

What is the function of mitochondria compared to a factory?

A

Furnace room

Mitochondria are known as the powerhouses of the cell, generating energy.

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9
Q

What do chloroplasts do compared to a factory?

A

Solar panel converter

Chloroplasts are responsible for photosynthesis in plant cells.

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10
Q

How do you calculate the magnification power of a microscope?

A

Multiply the objective lens power by the eyepiece power

Common magnification calculations include: 10-10=100x, 4-10=40x, 10-40=400x.

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11
Q

What is the difference between unicellular and multicellular organisms?

A
  • Unicellular: one cell
  • Multicellular: multiple cells

Unicellular organisms perform all life functions within a single cell, while multicellular organisms have specialized cells.

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12
Q

Give an example of a unicellular organism.

A

Bacteria

Bacteria are among the simplest forms of life, consisting of a single cell.

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13
Q

Give an example of a multicellular organism.

A

Fungi, animals

Multicellular organisms are more complex and include a variety of life forms.

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14
Q

How does diffusion work?

A

Evenly distributing particles from higher to lower concentration

Diffusion is the movement of particles until they are evenly spread in a given space.

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15
Q

What is osmosis?

A

Movement of water through a semipermeable membrane from high to low concentration

Osmosis specifically refers to the movement of water, which is crucial for cellular functions.

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16
Q

storage room compared to a cell

17
Q

outer factory walls compared to a cell

A

cell membrane

18
Q

factory fence compared to a cell

19
Q

workers on assembly line

A

endoplasmic reticulum

20
Q

packaging department compared to a cell

A

golgi body

22
Q

smallest magnification of power

23
Q

medium power magnification

A

10-10=100x

24
Q

high magnification power

A

10-40=400x

25
different parts of an animal cell are
Cell membrane, cytoplasm, nucleus, mitochondria, vacuoles
26
different parts of a plant cell are?
Cell membrane, cytoplasm, nucleus, mitochondria, vacuoles, cell wall, chloroplasts
27
what is the purpose of the cell membrane?
The primary purpose of the cell membrane, or plasma membrane, is to act as a protective barrier, regulating the movement of substances in and out of the cell
28
what is the function of the nucleus
The nucleus serves as the cell's control center, housing the genetic material (DNA) and regulating crucial cellular activities like protein synthesis, growth, and reproduction.
29
what is the function of chloroplasts
to perform photosynthesis, converting light energy into chemical energy in the form of sugars, and releasing oxygen as a by product
30
what is the function of the cell wall
The primary function of a cell wall is to provide structural support, shape, and protection to the cell, acting as a strong, semi-permeable outer layer.
31
31
32
what is the purpose of the nucleus
The nucleus serves as the cell's control center, housing the genetic material (DNA) and regulating crucial cellular activities like protein synthesis, growth, and reproduction.
33
what is the purpose cytoplasm?
The purpose of cytoplasm is to house and support all the cell's organelles and cellular components, providing a medium for metabolic processes and maintaining cell structure.
34
What is the purpose of the vacuoles?
vacuoles, membrane-bound organelles found in both plant and animal cells, serve as storage compartments, maintaining turgor pressure (especially in plant cells), and isolating harmful materials or waste product
35
what is the purpose of the mitochondria?
Mitochondria, often called the "powerhouses of the cell," are organelles that generate most of the chemical energy needed to power the cell's biochemical reactions, storing it as ATP (adenosine triphosphate).
36
what is the purpose of the cell wall?
The primary purpose of a cell wall is to provide structural support, maintain cell shape, and protect the cell from damage and pathogens.
37
what is the purpose of chloroplasts?
conduct photosynthesis