C2 bs Flashcards

1
Q

Organelle

A

A small structure in a cell that is surrounded by a membrane and has a specific function.

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2
Q

nucleus

A

the positively charged central core of an atom, consisting of protons and neutrons and containing nearly all its mass

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3
Q

lysosome

A

A sac-like compartment inside a cell that has enzymes that can break down cellular components that need to be destroyed. (digestion) used to defend from invading bacteria, destroy damaged cell organelles and controlled digestion of certain tissues during development.

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4
Q

golgi apparatus

A

Flat disc-shaped sacs involved with secretion. Used for secretion of substances like hormones, enzymes etc. Receives from the endoplasmic reticulum, it packages things for export in vesicles so they can leave the cell LIke a packaging facility preparing to export materials

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5
Q

Chloroplast

A

a plastid that contains chlorophyll and in which photosynthesis takes place.
6H2O+6CO2=C6H12O6+6O2

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6
Q

endoplasmic reticulum

A

Like the subway in a cell for transport. Interconnected small tube that branch from the nuclear membrane.
Can be rough (with ribosomes) or smooth (without
ribosomes. Rough - involved in
making proteins. Smooth- fats and oils

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7
Q

active transport

A

In cellular biology, active transport is the movement of molecules or ions across a cell membrane from a region of lower concentration to a region of higher concentration—against the concentration gradient. Active transport requires cellular energy to achieve this movement

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8
Q

Hypertonic

A

A hypertonic solution is any external solution that has a high solute concentration and low water concentration compared to body fluids. In a hypertonic solution, the net movement of water will be out of the body and into the solution.

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9
Q

carrier proteins

A

have ability to attach to larger molecules. Carrier proteins change shape and physically move the molecules across the membrane into the cell.
(non tube one)

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10
Q

carrier proteins

A

have ability to attach to larger molecules. Carrier proteins change shape and physically move the molecules across the membrane into the cell.
(non tube one)

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11
Q

Channel proteins

A

Create pores or channels through which small water-soluble particles are able to move. The movement happens in response to the concentration gradient.

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12
Q

exocytosis

A

When the cel wants to get rid of large waste particles, or needs to release a product molecule- A vesicle surrounds the particle, then moves to the plasma membrane and fuses with it. The vesicle then ruptures, releasing its contents into the surroundings.

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13
Q

ENDOCYTOSIS

A

A vesicle forms around the particle and the cell membrane pinches off around it so that the vesicle is inside the cell.

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14
Q

cell/plasma membrane

A

a microscopic membrane of lipids and proteins which forms the external boundary of the cytoplasm of a cell or encloses a vacuole, and regulates the passage of molecules in and out of the cytoplasm.

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15
Q

Endoplasmic reticulum

A

Like the subway in a cell. For transport. Can be rough (with ribosomes) or smooth (without ribosomes).
Rough - involved in making proteins Smooth, involved in fat and oil. Branch off the nuclear membrane ig?

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16
Q

Vacuoles

A

Generally speaking vacuoles are for storage
A vacuole is a membrane-bound cell organelle. In animal cells, vacuoles are generally small and help sequester waste products. In plant cells, vacuoles help maintain water balance. When fluids enter, turgor pressure increases causing the cell to become turgid. Sometimes a single vacuole can take up most of the interior space of the plant cell.

17
Q

Diffusion

A

Diffusion is the net movement of anything generally from a region of higher concentration to a region of lower concentration.

18
Q

passive transport

A

Passive transport is a type of cellular transport in which substances such as ions and molecules move down their respective concentration gradients. It means that the substance tends to move from an area of higher concentration to an area of lower concentration. Energy not needed

19
Q

passive transport

A

Passive transport is a type of cellular transport in which substances such as ions and molecules move down their respective concentration gradients. It means that the substance tends to move from an area of higher concentration to an area of lower concentration. Energy not needed

20
Q

Hypotonic

A

an area that has a lower solute concentration than another

21
Q

Channel proteins

A

Create pores or channels through which small water-soluble particles are able to move. The movement happens in response to the concentration gradient.

22
Q

endocytosis

A

A vesicle forms around the particle and the cell membrane pinches off around it so that the vesicle is inside the cell.

23
Q

Cytoplasm

A

Fluid gel-like interior of the cell. Like broth in a soup. Where the organelles are located. Allows for cytoplasmic
streaming

24
Q

ribosomes

A

Dense looking granules formed of two parts. Can be found in the rough endoplasmic reticulum or free in the cytoplasm. Where amino acids are assembled into proteins in the process of protein synthesis. Like the factory in a
city

25
Q

Cell wall

A

Only present in plant cells. A rigid frame around
the cell made of cellulose. Gives support to the cell.
It makes plant cells more regular in shape than animal cells. Located outside the cell membrane.

26
Q

facilitated diffusion

A

Type of passive transport. No energy. Facilitated diffusion is the passive movement of molecules along the concentration gradient. It is a selective process, i.e., the membrane allows only selective molecules and ions to pass through it. It, however, prevents other molecules from passing through the membrane.

27
Q

facilitated diffusion

A

Type of passive transport. No energy. Facilitated diffusion is the passive movement of molecules along the concentration gradient. It is a selective process, i.e., the membrane allows only selective molecules and ions to pass through it. It, however, prevents other molecules from passing through the membrane.

28
Q

Golgi body/ Golgi apparatus

A

Used for secretion of substances like hormones, enzymes etc. Receives from the endoplasmic reticulum, it packages things for export in vesicles so they can leave the cell. LIke a packaging facility preparing to export materials.

29
Q

nuclear membrane/ nuclear envelope

A

The nuclear envelope, also known as the nuclear membrane, is made up of two lipid bilayer membranes that in eukaryotic cells surround the nucleus, which encloses the genetic material.

30
Q

Vesicles

A

Transport substances throughout the cell.

31
Q

mitochondria

A

rod like structures where reactions occur to convert chemical energy in sugars into energy the cell can ue. This process i called cellular respiration. The chemical reaction for cellular respiration is C6H12O6+6O=6CO2+6H2O (opposite of photosynthesis)

32
Q

centrioles

A

only present in animal cells and are involved with cell division.

32
Q

centrioles

A

only present in animal cells and are involved with cell division.