Final Review W Flashcards

0
Q

Which monosaccharide is used by cells as an energy source

A

Glucose

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1
Q

What kind of organic compound stores the most energy

A

Lipids

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2
Q

What are the reactants and the products in a chemical reaction

A

Reactants are what goes into a chemical reaction and the products are what comes out

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3
Q
What are enzymes 
What class of organic compounds do they belong to and what do they do
A

A special type of protein that acts as a biological catalyst. They belong to proteins and act as a carrying molecules

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4
Q

What is a substrate
What is the active site
What is a catalyst and other name for it

A

A substrate is the reactants of enzyme catalyzed reaction
An active site is where the enzyme fits into the substrate
A catalyst speeds up a chemical reaction by lowering the EA

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5
Q

Explain the relationship between the shape of the enzyme active site and the substrate

A

They have complementary shapes and the enzyme fits into the substrate like a lock and key

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6
Q

What are some factors and could impact the function of an enzyme

A

They can be denatured by high heat, and a strong acid or base

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7
Q

Reactants products and what organelle is cellular respiration

A

Reactants are oxygen and glucose
Products are carbon dioxide water and energy
Organelle is mitochondria

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8
Q

Reactants products and organelle for photosynthesis

A

Reactants are carbon dioxide water and sunlight
Products are glucose and oxygen
Organelle is chloroplast

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9
Q

What is the first step of photosynthesis

A

Light dependent reactions

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10
Q

What is made during the light dependent reactions and provides energy for light independent reactions

A

ATP and NADPH

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11
Q

What molecule captures energy from the sunlight

A

Chlorophyll

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12
Q

Purpose of cellular respiration and chemical reaction

A

To break down glucose and food molecules

6 oxygen glucose equals 6 carbon dioxide 6 water ATP

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13
Q

What is an organelle

A

Organized or specialized structures living within a cell

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14
Q

Cytoskeleton

A

Made of microtubules and micro filaments, cell shape, help cells move

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15
Q

Mitochondria

A

Converts chemical energy in food to usable cells that need more energy

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16
Q

Chloroplast

A

Converts solar energy to chemical energy stored in food called photosynthesis

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17
Q

What is the difference between cilia and flagella

A

Cilia is short, numerous, hair like structure

Flagella is longer, whip like, and one or two

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18
Q

Main components of cell membrane

A

Phospholipids, cholesterol, carbohydrates

19
Q

Difference between endocytosis and exocytosis

A

Endocytosis is taking materials into the cell by infoldings or pocket
Exocytosis is a process in which the membrane of the vacuole surrounding the material fuses with the cell membrane forcing the contents out of the cel

20
Q

How is pinocytosis different from phagocytosis

A

Pinocytosis is cell drinking and intakes small drops of liquids phagocytosis is cell eating and intakes of solids

21
Q

What is a hormone and how do they work in an organism

A

A chemical that is produced in one part of an organism and affects another part of the same individual

22
Q

What is DNA replication
Why is it necessary
When does it occur

A

Process of copying DNA into another molecule of DNA
It gives new cells produced a complete set of chromosomes
It occurs in the s phase on interphase in the cell before mitosis

23
Q

What happens during transcription

A

DNA is unzipped and copied and RNA polymerase pairs free floating nucleotides with unzipped stands. Only one strand acts as a template

24
What happens during translation
Converts or translated the information in a sequence of nitrogen bases in mRNA into a sequence of amino acids that make up proteins
25
Role of mRNA rRNA tRNA during translation
mRNA attaches to the rRNA and reads the mRNA in groups tRNA carries amino acids An anticodon determines where an amino acid attaches to to ribosome A codon is a group of 3 mRNA
26
Where does translation occur
Cytoplasm
27
DNA codes for what biological molecule
Proteins
28
List three causes of mutations
Chemicals UV radiation Viruses
29
Growth and division portion of the cell cycle
G1 phase is the period of growth | M phase and cytokinesis are the portions of division
30
3 parts of interphase
G1 growth S phase DNS replicates itself G2 phase the cell prepares for mitosis
31
What is divided in mitosis and cytokinesis
In mitosis cell divides and in cytokinesis the cytoplasm divides
32
Phases of mitosis
Prophase - chromatin coils up and becomes visible chromosomes Metaphase - chromosomes line up at equator Anaphase - the chromosomes split and move toward opposite poles Telophase - the chromosomes uncoil and become invisible
33
Where in the cell cycle do the daughter cells go after cytokinesis is complete
Back to interphase
34
What is the purpose of mitosis in multicellular
We can grow, replace damage cells, replace cells that have died
35
What is a zygote and how does it become a multicellular organism
A fertilized egg and by dividing
36
List the stages of development of an embryo in order
``` Zygote Embryo Marula Blastula Fetus ```
37
Why does every cell in your body have identical DNA
Because the cell divides and passes DNA on
38
What is differentiation
When cells have different jobs
39
What are specialized cells
Cells with different structures carrying out different functions
40
What causes cells to differentiate and become specialized
The turning off and on of genes during the development of the embryo
41
What is a stem cell
A cell in the body whose job has not yet been determined and has the potential to become any cell
42
Totipotent cells
Total potential to develop into a new individual can become any cell
43
Pluripotent
Most potential and can become almost any cell
44
Multi potent
Lead much potential and can become a limited range of cells
45
Structure of DNA
Double helix Sides are switching sugar and phosphate groups Rungs are nitrogen bases