Everything deck :) Flashcards

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1
Q

When were microsopes used to discover cells

A
In 1665, early 
microscopes were used  
to look at cork
discovered tiny boxes, 
called “cells”
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2
Q

What is the cell theory?

A
  1. All living things are made of cells
  2. Cells are the simplest units of living things
  3. All cells come from existing cells through cell
    division
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3
Q

What is a prokaryotic

A

Prokaryotic: bacteria
Missing a nucleus and any membrane organelle
DNA hangs out in nucleoid

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4
Q

What is a Eukaryotic

A

Eukaryotic: every other cell
Has all organelles
Includes all other living things

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5
Q

Cell Specialization

A

The shape of cells is directly related to their function
 Examples:
Skin cells are flat and fit together tightly
Function: cover tissue and waterproofing
Nerve cells are long and thin
Function: transmit a signal long distances
Blood cells are thin and flexible
Function: carry oxygen and get everywhere in body

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6
Q

Cytoplasm:

A

—everything

except the nucleus

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7
Q

Cytosol

A

fluid that fills
the cells between
organelles

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8
Q

What is unicellular

A

also known as a single-celled organism, is an organism that consists of a single cell,

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9
Q

What is Multicellular

A

is an organism that consists of more than one cell

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10
Q

Organelle

A

Organelles are specialized structures that perform various jobs inside cells. The term literally means “little organs.” –organelles serve specific functions to keep a cell alive–

EX- lysosomes, nucleus , mitochondria , and the endoplasmic reticulum .

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11
Q

What is a Cell Membrane

A

is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer
The cell membrane regulates the transport of materials entering and exiting the cell.

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12
Q

Lipid bilayer

A

A bilayer is composed of two sheets of phospholipid molecules each having a head and two tails

its structural components provide the barrier that marks the boundaries of a cell.

The inside of the lipid bilayer is non-polar, while the heads are polar molecules and create hydrogen bonds with other polar molecules.

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13
Q

Phospolipids

A

also known as phosphatides, are a class of lipids whose molecule has a hydrophilic “head” containing a phosphate group, and two hydrophobic “tails”

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14
Q

Hydrophobic

A

tending to repel or fail to mix with water.

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15
Q

Hydrophilic

A

having a tendency to mix with, dissolve in water

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16
Q

Cell Wall

A

a structural layer surrounding some types of cells, Mainly plant cells

it protects the cell

17
Q

The primary wall

A

To allow for cell wall expansion during growth, primary walls are thinner and less rigid than those of cells that have stopped growing.

18
Q

secondary cell wall

A

Found in plant cells—located between the primary cell wall and the plasma membrane. The cell starts producing the secondary cell wall after the primary cell wall is complete and the cell has stopped expanding.

19
Q

Nucleus

A

A nucleus is a membrane-bound organelle that contains the cell’s chromosomes.

20
Q

Nucleolus

A

whose main function is ribosomal synthesis and ribosome biogenesis.

its a darker dot in the nucleus

21
Q

Nucleoid

A

an irregularly shaped area containing the genetic material of the prokaryotic cell.

ONLY IN BACTERIA

22
Q

Mitochondria

A

A mitochondrion is a double-membrane-bound organelle found in most eukaryotic organisms. —Responsible for orchestrating cellular energy production

23
Q

Ribosome

A

Ribosomes link amino acids together specified by the messenger RNA———–that perform biological protein synthesis.

24
Q

Golgi Apparatus

A

is a cell organelle that helps process and package proteins and lipid molecules, especially proteins destined to be exported from the cell.

25
Q

Lysosome

A

are membrane-bound organelles with roles in processes involved in degrading and recycling cellular waste, and energy metabolism

26
Q

Endoplasmic Reticulum

A

to produce proteins for the rest of the cell to function.

27
Q

Smooth Endoplasmic Reticulum

A

Smooth Endoplasmic Reticulum is known for stocking the lipids and proteins

28
Q

Rough Endoplasmic Reticulum

A

the Rough Endoplasmic Reticulum is bounded by the ribosomes and also stores proteins.

29
Q

Chloroplast

A

a plastid that contains chlorophyll and in which photosynthesis takes place.

Gives them their color

helps absorb energy as they undergo photosynthesis

30
Q

Vacuole

A

In plant cells, vacuoles help maintain water balance.

31
Q

Cytoplasm

A

is the gel-like fluid inside the cell. It is the medium for chemical reaction. It provides a platform upon which other organelles can operate within the cell.

32
Q

Cytosol

A

Cytosol is the liquid found inside of cells. It is the water-based solution in which organelles, proteins, and other cell structures float.

33
Q

Cytoskeleton

A

The cytoskeleton is a structure that helps cells maintain their shape and internal organization,

34
Q

Centrosome

A

a cellular structure involved in the process of cell division—

is the main place where cell microtubules are organized.

35
Q

Centriole

A

The main function of centriole is to help with cell division in animal cells.