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Bio-molecules and Cell structures Flashcards | StudBud
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Bio-molecules and Cell structures
Bio-molecules and Cell structures
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1
The function of an enzyme (catalyst) in a chemical reaction is to increase the ___?
reaction rate
pH
number of substrates
activation energy
2
Which of the following cell processes would stop first if all the lysosomes in a cell were suddenly destroyed?
cellular respiration
active transport
protein synthesis
ntracellular digestion
3
An animal cell’s digestive enzymes are contained in the ___.
ribosome
lysosome
cytoplasm
mitochondria
4
The human body is composed of organ systems. Which list represents a system organized from least to most complex?
Muscle cell → muscle tissue → biceps muscle → muscular system
Heart → cardiac muscle → muscle tissue → muscle cell
Lung tissue → trachea → nostrils → circulatory system
Integumentary system → skin cell → hair → sweat glands
5
The semi-permeable structure that controls movement into and out of the cell is represented by the number __?
6
10
1
14
6
Which structures are found in every living cell?
Centriole and chromosomes
Chloroplast and mitochondria
Cell membrane and cytoplasm
Cell wall and nucleus
7
Which structure in the cell below digests intracellular waste?
3
1
2
4
8
The lock-and-key model of enzyme function shown illustrates which important characteristic of enzymes?
Ability to bind with many reactants
Ever-changing structure
Ability to bond with a product
Precise fit with a particular substrate
9
Fats, oils, insulation, and cholesterol are all types of ___?
Lipids
Proteins
Carbohydrates
Nucleic Acids
10
Nucleotides, the monomer of nucleic acids, serves which of these functions in the cell?
catalyzing cellular reactions
building tissue
storing energy
storing hereditary information
11
Which statements listed below are associated with cell theory?
Cells come from pre-existing cells
All organisms are made of cells
A cell is the most basic unit of life
All answeres are correct
12
Which of the following is a function of lipids
Stored genetic matterials
regulates enzymes
insulation, helping animals conserve heat?
quick energy
13
Which of the following is the main difference between Eukaryotic cells and Prokaryotic cells?
Eukaryotic cells have a nucleus and membrane bound organelles
Prokaryotic cells have ribosomes and Eukaryotic cells do not
Prokaryotes are shaped like circles and Eukaryotes are not
Eurkaryotic cells have cytoplasm and Prokaryotic cells don't
14
The cell below would most likely be from an organism related to a(n)
plant
bacteria
animal
human
15
Which of the following is arranged in the order of increasing levels of function?
organ, organ system, tissue, cell
cell, tissue, organ, organ system
tissue, cell, organ, organ system
organ system, organ, tissue, cell
16
Based on the graph below, at what temperature range is enzyme activity at its greatest?
30-40oC
15-25oC
25-35oC
40-50oC
17
What are the four main organic molecules of life?
starches, cholesterol, fatty acids, amino acids
polysaccharides, sugars, oils, lipids
carbohydrates, lipids, proteins, nucleic acids
sugars, cellulose, triglycerides, monosaccharides