biology Flashcards
What is the most basic unit of life?
The cell
All organisms are made up of cells. True or false?
True
All cells do not arise from other cells. True or false?
False.
All cells have similar biomolecules and biochemical reactions. True or false?
True
All cells do not contain genetic material which is passed on from one cell to another. True or false?
True
All chemical and physiological processes in the body happen in the mitochondria.
False - Cell
What are the two types of cell?
Prokaryotic and Eukaryotic Cells
What is the modern cell theory?
The modern cell theory indicates that cells are the basic structural, functional, and organizational units of both single-celled and multicellular organisms; cells divide and pass on hereditary information; and energy flows within cells.
Prokaryotic cells have true nucleus. True or false?
False. Only eukaryotic cells have true nucleus.
Eukaryotic cells do not have membrane-bound organelles. True or false?
False. Only prokaryotic cells have these organelles.
Are prokaryotic cells mostly unicellular?
Yes.
Give examples of prokaryotic cells.
Archaea, Bacteria
Give examples of eukaryotic cells.
Animalia, Plantae, Fungi, Protista
Give examples of biomolecules.
Carbohydrates, Proteins, Lipids, and Nucleic Acids
What are the building blocks of carbohydrates?
Monosaccharides
What are the building blocks of proteins?
Amino acids
What are the building blocks of lipids?
Fatty acids, glycerol
What are the building blocks of nucleic acids?
Nucleotides
Give examples of carbohydrates.
Starch, cellulose
Give examples of monosaccharides.
Starch, cellulose
Give examples of amino acids.
Enzymes, Hormones
Give examples of fatty acids or glycerol
Steroids, fats
Give examples of nucleotides.
DNA, RNA
What are the levels of biological organization?
Population, Community, Ecosystem, Biosphere
This is where we can find all the ecosystems on Earth.
Biosphere
There is where we can find all communities and their environment.
Ecosystem
This is where we can find all populations in an area.
Community
This is where we can find all individuals of the same species in an area.
Population
What are the two nucleic acids?
DNA & RNA
How many strands does RNA have?
Single strand/One
What is the base pairing for RNA?
Adenine-Uracil (A-U), Guanine-Cytosine(G-C)
What is the base pairing for DNA?
Adenine-Thymine(A-T), Guanine-Cytosine(G-C)
What is the sugar backbone for DNA?
Deoxyribose
What is the sugar backbone for RNA?
Ribose
What are the organelles?
Cell Membrane, Genetic Material, Ribosomes, Nucleus, Golgi Apparatus, Endoplasmic Reticulum, Mitochondria, Lysosome, Chloroplast, Vacuole, Cell Wall, Centrioles
This organelle functions as cell communication and transport.
Cell Membrane
This organelle functions as storage of genetic information.
Genetic Material
This organelle functions as protein synthesis.
Ribosomes
This organelle functions as command center.
Nucleus
This organelle functions as transportation of proteins and other cellular components.
Golgi Apparatus
This organelle functions as protein synthesis and lipid production.
Endoplasmic Reticulum
This organelle functions as ATP synthesis.
Mitochondria
This organelle functions as cellular digestion.
Lysosome
This organelle functions as photosynthesis.
Chloroplast
This organelle functions as storage of food and other cellular components.
Vacuole
This organelle functions as structural support, protection, controls cell transportation.
Cell Wall
This organelle functions as production of spindle fibers during cell division.
Centrioles
What are the organelles that are present only in prokaryotes?
Nucleoid Region, Capsule, Plasmid (Extra, Circular DNA), and Pilli
What are the organelles that are present in both prokaryotes and eukaryotes?
Ribosomes, Cytoplasm, Cell Membrane, and Genetic Material
What are the unique organelles in a plant cell?
Chloroplast, Plasmodesma, and Cell Wall
What is the unique organelles in an animal cell?
Centriole
What are the phases of mitosis?
Prophase, Metaphase, Anaphase, and Telophase
In what phase does the chromosomes become distinct in diploid cell?
Prophase
In what phase does the chromosomes line up?
Metaphase
In what phase do the sister chromatids head towards the opposite poles?
Anaphase
In what phase does the cell split, of which two diploid cells are formed?
Telophase
What are the stages of Meiosis?
Prophase I, Metaphase I, Anaphase I, Telophase I, Prophase II, Metaphase II, Anaphase II, and Telophase II
In what phase does the chromosome become distinct?
Prophase I
In what phase does the chromosome line up by pairs?
Metaphase I
In what phase do the chromosome pairs move toward each pole?
Anaphase I
In what phase does the cell split, forming two haploid cells?
Telophase I
In what phase does do two haploid cells ready for division?
Prophase II
In what phase do the chromosomes line up?
Metaphase II
In what phase do sister chromatids head towards each pole?
Anaphase II
In what phase do each cell split, forming four haploid cells?
Telophase II
Discuss the development of male gametes in angiosperms.
Microsporocyte (Pollen mother cell) 2n → 4 Microspores n → Microgametophyte (tricellular pollen) n
What do you call the process when the microsporocyte turns into microspores in male gametes?
Microsporogenesis (Meiosis)
What do you call the process when the microspores turn into microgametophyte in male gametes?
Microgametogenesis (Meiosis)
Discuss the development of female gametes in angiosperms.
Megasporocyte (Megaspore mother cell) 2n → Megaspore n → Megagametophyte (Embryo sac) n
What do you call the process when the megasporocyte turns into a megaspore in female gametes?
Megasporogenesis (Meiosis)
What do you call the process when the megaspore turns into megagametophyte in female gametes?
Megagametogenesis (Mitosis)
What is the process of spermatogenesis?
Spermatogonium (2n) → Primary Spermatocyte (2n) → Secondary Spermatocyte (n) → Spermatids (n) → Sperms (n)
This is the production or development of mature spermatozoa.
Spermatogenesis
This is the production or development of an ovum.
Oogenesis
What is the process of oogenesis?
Oogenium (2n) → Primary Oocyte (2n) → Secondary Oocyte (n) → Egg (n) and Polar Bodies (will disintegrate)
What is the general term for all chemical reactions of a cell, consists of anabolism and catabolism .
Metabolism
This is the synthesis of complex molecules in living organisms from simpler ones together with the storage of energy; constructive metabolism.
Anabolism
This is the breakdown of complex molecules in living organisms to form simpler ones, together with the release of energy; destructive metabolism.
Catabolism
This is the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
Photosynthesis
What are the steps in photosynthesis?
- Light-dependent Reactions
- Light-Independent Reactions/Calvin Cycle
This is the conversion of light energy and water to chemical energy and oxygen.
Light-Dependent Reactions
This is the formation of carbohydrate molecules from carbon dioxide using the chemical energy produced from light-dependent reactions.
Light-Independent Reactions/Calvin Cycle
What are the steps in respiration?
- Glycosis
- Oxidation of Pyruvate
- Citric Acid/TCA/Krebs Cycle
- Oxidative Phosphorylation
This is the conversion of glucose to pyruvate.
Glycosis
This is the conversion of pyruvate to acetyle CoA.
Oxidation of Pyruvate
This is a 10-step cycle that produces oxaloacetate from acetyl CoA; leads to the formation of ATPs, NADHs, and FADH2.
Citric Acid/TCA/Krebs Cycle
This consists of the electron transport chain and chemiosmosis; synthesis of ATPs using ATP synthase.
Oxidative Phosphorylation
This replaces Krebs Cycle and electron-transport chain if oxygen is absent.
Fermentation
Anaerobic respiration
Fermentation
This converts glucose into lactic acid.
Lactic Acid Fermentation
This converts glucose into ethyl alcohol.
Ethanol Fermentation
What are the types of cellular transport?
Passive and Active Transport
This type of transport uses ATP, such as phagocytosis, pinocytosis, and uptake glucose in the intestine.
Active Transport
What are the characteristics of diffusion in passive transport?
No semi-permeable membrane, movement of any particle, from high to low concentration
What are the characteristics of osmosis in passive transport?
Across semi-permeable membrane, movement of solvent, and from low to high concentration
This is the study of genes, genetic variation, and heredity in organisms.
Genetics
This gene forms for a certain trait.
Alleles
This means having two of the same allele.
Homozygous
This means having two different alleles for a certain trait/half-bred.
Heterozygous
This is a hidden or masked gene.
Recessive
This is the expressed gene.
Dominant
This is what an organism’s physical characteristic is called.
Phenotype
This is what an organism’s actual genetic composition is called.
Genotype
This is where the DNA double chain “unzips” and a new complementary strand is formed for each “unzipped” strand, creating two complete double-chains.
Replication
This is RNA for protein synthesis is created from DNA.
Transcription
Instead of adenine-thymine, the base pairing is now adenine-uracil.
Transcription
The messenger RNA produced from transcription will be used as a template for the synthesis of amino acids.
Translation
How many bases code for one amino acid?
Three
Each gene directs the synthesis of a protein enzyme that controls a chemical reaction of the cell.
One Gene-One Enzyme Hypothesis
The chemical reactions, in turn, determine the phenotype of the organism.
One Gene-one Enzyme Hypothesis
What are the classification of organisms?
Domain Archaea, Domain Bacteria, and Domain Eukarya
This is the only eukaryotic cell in the classification of organisms.
Domain Eukarya
What are the other two prokaryotic cells in the classification of organisms?
Domain Archaea, Domain Bacteria
What is the kingdom in domain archaea?
Kingdom Archaebacteria
What is the kingdom in domain bacteria?
Kingdom Eubacteria
What is the kingdom in domain eukarya?
Kingdoms Protista, Fungi, Plantae, and Animalia
What is the environment of domain archaeas?
Extremeophiles (They love extreme environments.)