Lecture 3, Life Processes 3 Flashcards Preview

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Flashcards in Lecture 3, Life Processes 3 Deck (14)
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1
Q

Cell membranes are semi-permeable, what are their main three transport functions?

A

Channels for facilitated passive diffusion, Na+/K+ ATPase for active transport, and endocytosis/exocytosis.

2
Q

What are our cells receptors called?

A

Neurotransmitters/hormones

3
Q

What is the cytoskeleton of a cell?

A

A network of interlinking protein strands used for connecting organelles, shape of the cell, and transport within the cell.

4
Q

What is contained in the nucleus of a cell?

A

The cell’s DNA and all information needed to code proteins/ribosomes.

5
Q

What is the endoplasmic reticulum of a cell?

A

A construction warehouse where smooth ER has enzymes to build lipids, and rough ER to build proteins, and a phospholipid bilayer for easy interaction with cell membrane.

6
Q

What does rough ER do more specifically?

A

They convert genetic code into amino acids, build proteins.

7
Q

What is the role of the golgi apparatus?

A

Made of layers of phospholipid bilayer membrane, protein processing, and packaging.

8
Q

What are the mitochondria?

A

The ‘power house of the cell’, they use fuel molecules and oxygen to create ATP in a process known as cellular respiration.

9
Q

What % of the blood is plasma, and what makes up that % of plasma.

A

55% plasma, made up of 92% water, 7% plasma proteins (albumins, globulins, fibrinogen, and enzymes and hormones), and 1% other solutes.

10
Q

What % of the blood consists of ‘solids’?

A

45% formed elements consisting of 99.9% red blood cells, and <0.1% platelets and white blood cells.

11
Q

What is the role of plasma proteins in the blood?

A

Help transport lipids and other substances.

12
Q

What are some main functions of plasma proteins?

A

Injury recovery, help form blood clots, regenerate blood when lost.

13
Q

What is albumin?

A

The most common plasma protein (half of all plasma protein), helps keep water in the blood, therefore is helpful to restore blood volume after bleeding.

14
Q

What do globulins and leukocytes do?

A

Protect the body from toxins and pathogens.