The nature and variety of living organisms Flashcards

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1
Q

MRSCGREN stands for what

A

Movement
Sensitivity
Control
Growth
Respiration
Excretion
Nutrition

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2
Q

What does M mean in MRSCGREN definition?

A

Movement an action by an organism or part of an organism causing a change of position of place. Animals move their whole bodies to get from one place to another.

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3
Q

What does R stand for in MRSCGREN

A

Reproduction the process of making more of the same kind of organism.

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4
Q

What does the S stand for in MRSCGREN

A

Sensitivity. The ability to detect or sense changes in the environment and to make responses.
e.g. plant grows toward the light

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5
Q

What does c stand for in MRSCGREN

A

Control the ability to matain a steady state inside of the body.
e.g.
Temp
Blood sugar level
Water level

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6
Q

What does G stand for in MRSCGREN

A

Growth a permanent increase in size by an increase in cell numbers or ell sizes or both

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7
Q

What does R stand for in MRSCGREN?

A

Respiration . The chemical reaction that breaks down nutrient molecules in living cells to release energy.

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8
Q

What does e stand for in MRSCGREN

A

Excretion
Removal from organism of toxic material waste products of metabolism and substances in excess of requirements

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9
Q

What does N in MRSCGREN stand for

A

Nutrition providing or obtaining the food necessary containing raw materials or energy for growth and tissue repair.

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10
Q

Unicellular organism definition

A

An organism made up of one cell

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11
Q

multicellular organism

A

an organism made up of two or more cells

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12
Q

Organelle defenition

A

Tiny structures found within cells ,e.g. nucleus

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13
Q

cell defenition

A

The smallest unit of life - the building blocks of life , e.g. epithelial cell

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14
Q

Tissue definition

A

a group of similar cells working together to carry out a a particular function , e.g. xylem

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15
Q

Organ definition

A

a group of different tissues that work together to perform a function , e.g. kidney

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16
Q

Organ system definition

A

A group of organs that work together to carry out a particular job ,e.g. excretory system

17
Q

Eukaryotic meaning

A

True nucleus The DNA of Eukaryotes is enclosed by a nuclear membrane , i.e. they have a nucleus.

18
Q

Prokaryotic meaning

A

Prokaryotic means before nucleus this means that they do not have a nucleus but instead the DNA is found free in the cytoplasm as a circle. They have no membrane bound organelles . they are smaller than eukaryotic cells

19
Q
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20
Q
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