Biology Basics
What does the smooth endoplasmic reticulum (SER) do?
A food web is interconnected food chains in an ecosystem, showing complex feeding relationships and greater realism.
Mitosis is cell division producing two identical diploid daughter cells for growth, repair, and asexual reproduction; it includes prophase, metaphase, anaphase, telophase.
The SER synthesizes lipids, detoxifies drugs and poisons, and stores calcium ions in muscle cells.
Cellular respiration is the process cells use to break down glucose into ATP, releasing energy for cellular work, primarily in mitochondria.
Biology Basics
What is biodiversity?
The seven characteristics are organization (cells), metabolism, homeostasis, growth, reproduction, response to stimuli, and adaptation through evolution.
A nucleotide consists of a deoxyribose sugar, phosphate group, and nitrogenous base (adenine, thymine, cytosine, or guanine).
Glycolysis is the first stage of cellular respiration, occurring in cytoplasm, where glucose splits into two pyruvate molecules, producing 2 ATP and 2 NADH.
Biodiversity is the variety of life at genetic, species, and ecosystem levels; essential for ecosystem stability and human well-being.
Biology Basics
What is the Calvin cycle?
The levels are atoms, molecules, organelles, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystems, and biosphere.
A food web is interconnected food chains in an ecosystem, showing complex feeding relationships and greater realism.
The four are carbohydrates (energy/storage), lipids (energy storage/insulation), proteins (structure/enzymes), and nucleic acids (genetic information).
The Calvin cycle, or light-independent reactions, uses ATP and NADPH to fix CO2 into glucose in the stroma of chloroplasts.
Biology Basics
What is a mutation?
The SER synthesizes lipids, detoxifies drugs and poisons, and stores calcium ions in muscle cells.
The nucleus houses the cell's DNA, controls cellular activities like growth and reproduction, and is the site of RNA synthesis.
A mutation is a change in DNA sequence; types include point mutations, insertions, deletions, causing variations or diseases like sickle cell anemia.
Blood types (A, B, AB, O) are determined by ABO gene alleles on antigens; Rh factor adds + or - based on another gene.
Biology Basics
What is a food chain?
The four are carbohydrates (energy/storage), lipids (energy storage/insulation), proteins (structure/enzymes), and nucleic acids (genetic information).
The SER synthesizes lipids, detoxifies drugs and poisons, and stores calcium ions in muscle cells.
Biology is the scientific study of life and living organisms, encompassing their structure, function, growth, origin, evolution, and distribution.
A food chain shows energy transfer from producers (plants) to consumers (herbivores, carnivores) to decomposers, linearly.
Biology Basics
What is the function of the cell membrane?
Viruses are non-living infectious agents with genetic material in protein coat; they replicate only inside host cells, lacking metabolism.
The cell membrane, or plasma membrane, regulates what enters and exits the cell, maintains homeostasis, and facilitates communication using a phospholipid bilayer with embedded proteins.
The seven characteristics are organization (cells), metabolism, homeostasis, growth, reproduction, response to stimuli, and adaptation through evolution.
The Golgi apparatus modifies, sorts, and packages proteins and lipids into vesicles for secretion or use within the cell.
Biology Basics
Why is water essential to life?
The Calvin cycle, or light-independent reactions, uses ATP and NADPH to fix CO2 into glucose in the stroma of chloroplasts.
Water is a universal solvent, aids in transport, regulates temperature, participates in hydrolysis reactions, and maintains cell shape via cohesion and adhesion.
The RER is studded with ribosomes and modifies proteins destined for secretion or membranes, folding and adding carbohydrates.
Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy, producing glucose and oxygen from carbon dioxide and water.
Biology Basics
What are lysosomes?
Blood types (A, B, AB, O) are determined by ABO gene alleles on antigens; Rh factor adds + or - based on another gene.
The cell membrane, or plasma membrane, regulates what enters and exits the cell, maintains homeostasis, and facilitates communication using a phospholipid bilayer with embedded proteins.
Stages are prophase (chromosomes condense), metaphase (line up at equator), anaphase (sister chromatids separate), telophase (nuclei reform), followed by cytokinesis.
Lysosomes are membrane-bound sacs containing hydrolytic enzymes that break down waste materials, cellular debris, and pathogens through digestion.
Biology Basics
What are the five kingdoms of life?
Stages are prophase (chromosomes condense), metaphase (line up at equator), anaphase (sister chromatids separate), telophase (nuclei reform), followed by cytokinesis.
The SER synthesizes lipids, detoxifies drugs and poisons, and stores calcium ions in muscle cells.
Chloroplasts are organelles in plant cells that perform photosynthesis, converting light energy into chemical energy stored in glucose using chlorophyll.
Kingdoms are Monera (bacteria), Protista (protists), Fungi (fungi), Plantae (plants), Animalia (animals).
Biology Basics
What is DNA?
Stages are prophase (chromosomes condense), metaphase (line up at equator), anaphase (sister chromatids separate), telophase (nuclei reform), followed by cytokinesis.
Biology is the scientific study of life and living organisms, encompassing their structure, function, growth, origin, evolution, and distribution.
Cytoplasm is the gel-like substance inside the cell membrane but outside organelles, where many cellular processes occur and organelles are suspended.
DNA (deoxyribonucleic acid) is a double-helix molecule storing genetic information in nucleotides (A, T, C, G) as the hereditary material in nearly all organisms.
Biology Basics
What is mitosis?
The SER synthesizes lipids, detoxifies drugs and poisons, and stores calcium ions in muscle cells.
Enzymes are biological catalysts, mostly proteins, that speed up chemical reactions by lowering activation energy without being consumed.
A gene is a segment of DNA that codes for a specific protein or RNA molecule, determining traits.
Mitosis is cell division producing two identical diploid daughter cells for growth, repair, and asexual reproduction; it includes prophase, metaphase, anaphase, telophase.
Biology Basics
What are the four main types of biological macromolecules?
The four are carbohydrates (energy/storage), lipids (energy storage/insulation), proteins (structure/enzymes), and nucleic acids (genetic information).
Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy, producing glucose and oxygen from carbon dioxide and water.
DNA (deoxyribonucleic acid) is a double-helix molecule storing genetic information in nucleotides (A, T, C, G) as the hereditary material in nearly all organisms.
The Krebs cycle oxidizes acetyl-CoA from pyruvate in the mitochondrial matrix, producing CO2 , ATP, NADH, and FADH2 .
Biology Basics
What are the levels of biological organization from simplest to most complex?
Meiosis is cell division producing four non-identical haploid gametes for sexual reproduction, involving two divisions and genetic recombination.
A mutation is a change in DNA sequence; types include point mutations, insertions, deletions, causing variations or diseases like sickle cell anemia.
The levels are atoms, molecules, organelles, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystems, and biosphere.
Glycolysis is the first stage of cellular respiration, occurring in cytoplasm, where glucose splits into two pyruvate molecules, producing 2 ATP and 2 NADH.
Biology Basics
What is glycolysis?
Meiosis is cell division producing four non-identical haploid gametes for sexual reproduction, involving two divisions and genetic recombination.
A food chain shows energy transfer from producers (plants) to consumers (herbivores, carnivores) to decomposers, linearly.
Biology is the scientific study of life and living organisms, encompassing their structure, function, growth, origin, evolution, and distribution.
Glycolysis is the first stage of cellular respiration, occurring in cytoplasm, where glucose splits into two pyruvate molecules, producing 2 ATP and 2 NADH.
Biology Basics
What is a Punnett square?
Chloroplasts are organelles in plant cells that perform photosynthesis, converting light energy into chemical energy stored in glucose using chlorophyll.
The levels are atoms, molecules, organelles, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystems, and biosphere.
A Punnett square predicts offspring genotypes from parental gametes; e.g., for monohybrid cross, shows ratios like 3:1 phenotypic.
DNA (deoxyribonucleic acid) is a double-helix molecule storing genetic information in nucleotides (A, T, C, G) as the hereditary material in nearly all organisms.
Biology Basics
What is biology?
Viruses are non-living infectious agents with genetic material in protein coat; they replicate only inside host cells, lacking metabolism.
The seven characteristics are organization (cells), metabolism, homeostasis, growth, reproduction, response to stimuli, and adaptation through evolution.
Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy, producing glucose and oxygen from carbon dioxide and water.
Biology is the scientific study of life and living organisms, encompassing their structure, function, growth, origin, evolution, and distribution.
Biology Basics
What occurs in the light-dependent reactions of photosynthesis?
Enzymes are biological catalysts, mostly proteins, that speed up chemical reactions by lowering activation energy without being consumed.
Glycolysis is the first stage of cellular respiration, occurring in cytoplasm, where glucose splits into two pyruvate molecules, producing 2 ATP and 2 NADH.
Light-dependent reactions capture sunlight in thylakoids, splitting water to produce ATP, NADPH, and oxygen; these energy carriers go to the Calvin cycle.
The SER synthesizes lipids, detoxifies drugs and poisons, and stores calcium ions in muscle cells.
Biology Basics
What are the seven characteristics of life?
A cell is the basic structural and functional unit of all living organisms, often called the 'building block of life'.
RNA (ribonucleic acid) is a single-stranded nucleic acid with uracil (U) instead of thymine; types include mRNA, tRNA, rRNA for protein synthesis.
Water is a universal solvent, aids in transport, regulates temperature, participates in hydrolysis reactions, and maintains cell shape via cohesion and adhesion.
The seven characteristics are organization (cells), metabolism, homeostasis, growth, reproduction, response to stimuli, and adaptation through evolution.
Biology Basics
What is the structure of a DNA nucleotide?
Stages are prophase (chromosomes condense), metaphase (line up at equator), anaphase (sister chromatids separate), telophase (nuclei reform), followed by cytokinesis.
Light-dependent reactions capture sunlight in thylakoids, splitting water to produce ATP, NADPH, and oxygen; these energy carriers go to the Calvin cycle.
The RER is studded with ribosomes and modifies proteins destined for secretion or membranes, folding and adding carbohydrates.
A nucleotide consists of a deoxyribose sugar, phosphate group, and nitrogenous base (adenine, thymine, cytosine, or guanine).