Biology Overview: Proteins, Genetics, and Plants
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Questions and Answers

Which organelle is responsible for protein synthesis?

  • Nucleus
  • Lysosome
  • Ribosome (correct)
  • Mitochondrion

Why is yeast used to make bread rise?

Yeast carries out fermentation, producing ethanol and carbon dioxide

How is mitosis different from meiosis?

Meiosis creates sex cells with half the number of chromosomes of the parent cell while mitosis creates cells that are exact copies.

What can be altered?

<p>DNA</p> Signup and view all the answers

What is single stranded?

<p>RNA</p> Signup and view all the answers

What contains uracil?

<p>RNA</p> Signup and view all the answers

What codes for proteins?

<p>DNA</p> Signup and view all the answers

What percentage of offspring is predicted to be carriers but not manifest the disease in cystic fibrosis?

<p>50 percent</p> Signup and view all the answers

What would you expect to happen to a cell in a hypotonic solution?

<p>It will swell and probably burst.</p> Signup and view all the answers

What is the purpose of phloem tissue in plant stems?

<p>It conducts food throughout the plant.</p> Signup and view all the answers

What can physical factors such as temperature and pH affect?

<p>Enzyme activity</p> Signup and view all the answers

Which part of a plant's reproductive system is of a different gender?

<p>Stamen</p> Signup and view all the answers

What kind of symbiosis exists between a pneumonia bacterium and a human?

<p>Parasitism</p> Signup and view all the answers

What does the scientific name for a house cat, Felis catus, indicate?

<p>Genus/Felis and Species/catus (C)</p> Signup and view all the answers

Beeswax is an example of what kind of molecule?

<p>Lipid</p> Signup and view all the answers

What takes place in a lysosome?

<p>Food is digested.</p> Signup and view all the answers

Which organism reproduces via binary fission?

<p>Salmonella</p> Signup and view all the answers

In which phase of cell division do the chromosomes replicate?

<p>Interphase</p> Signup and view all the answers

In a strand of DNA, adenine pairs with?

<p>Thymine</p> Signup and view all the answers

What is the predicted ratio of offspring with hemophilia from a male with hemophilia and a female carrier?

<p>1 female: 0 male</p> Signup and view all the answers

What process is represented by the formula 6CO2 + 6H2O => C6H12O6 + 6O2?

<p>Photosynthesis</p> Signup and view all the answers

How would you describe the students' measurements with values of 5.14g, 5.16g, and 5.17g if the known mass is 5.30g?

<p>Precise</p> Signup and view all the answers

What is the energy pyramid?

<p>Producers &gt; primary consumers &gt; secondary consumers &gt; decomposers</p> Signup and view all the answers

Which is not a step in the water cycle?

<p>Nitrification</p> Signup and view all the answers

Why do we perceive chlorophyll as green?

<p>It fails to absorb green light.</p> Signup and view all the answers

Why are bacteria and blue-green algae often classified together?

<p>Both are prokaryotes.</p> Signup and view all the answers

Which molecule contains glucose?

<p>Carbohydrates</p> Signup and view all the answers

What conducts water up through the stem of a plant?

<p>Xylem</p> Signup and view all the answers

What are the female parts of a plant?

<p>Pistil, Stigma, Style</p> Signup and view all the answers

What are vascular plants whose seeds have no protective covering?

<p>Gymnosperms</p> Signup and view all the answers

How do organisms that make their own food through photosynthesis function?

<p>Autotrophs</p> Signup and view all the answers

What are infectious organisms that spread disease?

<p>Pathogens</p> Signup and view all the answers

Which organelle is the site of energy production?

<p>Mitochondrion</p> Signup and view all the answers

What happens to glucose during glycolysis?

<p>It splits into molecules of pyruvic acid.</p> Signup and view all the answers

What process do cells in the tip of a plant's roots undergo to increase in number?

<p>Mitosis</p> Signup and view all the answers

How do RNA and DNA derive their names?

<p>From the sugar each contains.</p> Signup and view all the answers

What is the predicted percentage of disease-free offspring if a disease is carried on the dominant allele?

<p>25%</p> Signup and view all the answers

If bacteria are placed in a strong solution of salt water, what is this process called?

<p>Osmosis</p> Signup and view all the answers

Which animal has an open transport system?

<p>Grasshopper</p> Signup and view all the answers

How does an enzyme work on a chemical reaction?

<p>An enzyme speeds up the reaction by lowering the activation energy.</p> Signup and view all the answers

Where is the ovary located in a flowering plant?

<p>Pistil</p> Signup and view all the answers

What is a symbiotic relationship in which one organism benefits and the other is not affected?

<p>Commensalism</p> Signup and view all the answers

What gives the order of four taxonomic categories from least to most specific?

<p>Kingdom, Phylum, Class, Order, Family, Genus, Species</p> Signup and view all the answers

Which molecules contain only carbon, hydrogen, and oxygen?

<p>Carbohydrates and Lipids (C)</p> Signup and view all the answers

Which structure is found in protists but not in monerans?

<p>Golgi apparatus</p> Signup and view all the answers

How does yeast reproduce?

<p>Budding</p> Signup and view all the answers

What takes place during anaphase?

<p>Chromosomes move to opposite ends of the spindle.</p> Signup and view all the answers

What is DNA composed of?

<p>Deoxyribose, nitrogen base, and phosphate group.</p> Signup and view all the answers

What are the products of the Krebs cycle?

<p>ATP, carbon dioxide, NADH</p> Signup and view all the answers

What is the Krebs or citric acid cycle the third step of?

<p>Carbohydrate catabolism</p> Signup and view all the answers

Whose efficiency of energy is greater on the energy pyramid?

<p>Herbivore</p> Signup and view all the answers

What is the function of decomposition in the carbon cycle?

<p>To release carbon dioxide.</p> Signup and view all the answers

Which light color would be most effective for growing green plants indoors?

<p>Blue</p> Signup and view all the answers

Which bacteria are spherical in shape?

<p>Cocci</p> Signup and view all the answers

What is the term for the breakdown of glycogen into glucose subunits?

<p>Hydrolysis</p> Signup and view all the answers

Which organelle provides storage space for the cell?

<p>Vacuoles</p> Signup and view all the answers

What is a byproduct of fermentation in muscle cells?

<p>Lactic acid</p> Signup and view all the answers

In which phase of mitosis do new nuclear membranes form around sets of chromosomes?

<p>Telophase</p> Signup and view all the answers

Which names a final step in protein synthesis?

<p>Amino acid bonds</p> Signup and view all the answers

What are the steps of protein synthesis?

<p>Coded info from DNA is translated into a finished protein.</p> Signup and view all the answers

What natural process prevents foods with high salt content from spoiling?

<p>Osmosis</p> Signup and view all the answers

What is necessary for active transport through a membrane to take place?

<p>ATP</p> Signup and view all the answers

What are enzymes made from?

<p>Proteins</p> Signup and view all the answers

What is an example of a gymnosperm?

<p>Red cedar</p> Signup and view all the answers

What is a symbiotic relationship where both organisms benefit?

<p>Mutualism</p> Signup and view all the answers

What classification does Dogs belong to in the animal group Carnivora?

<p>Order</p> Signup and view all the answers

What are saturated fats saturated with?

<p>Hydrogen atoms</p> Signup and view all the answers

What is found in animal cells but not in plant cells?

<p>Centriole</p> Signup and view all the answers

What is the form of reproduction when ocean waves tear sponges into pieces?

<p>Fragmentation</p> Signup and view all the answers

How many pairs of homologous chromosomes do humans have?

<p>23 pairs for a total of 46</p> Signup and view all the answers

What happens to messenger RNA as it reaches the cytoplasm?

<p>It attaches to a ribosome.</p> Signup and view all the answers

What are the raw materials needed for cellular respiration?

<p>ADP, phosphate, and glucose</p> Signup and view all the answers

Which would have the least energy efficiency in nutrient consumption: cow, caterpillar, coyote, or cricket?

<p>Coyote</p> Signup and view all the answers

How do green plants use nitrates in the nitrogen cycle?

<p>To synthesize proteins.</p> Signup and view all the answers

Which color of light is least effective at driving photosynthesis?

<p>Green</p> Signup and view all the answers

What might be described as a core of nucleic acid surrounded by a protein coat?

<p>Virus</p> Signup and view all the answers

In contrast to triglycerides, phospholipids lack what component?

<p>Fatty acid</p> Signup and view all the answers

Which phase is the phase where DNA is replicated?

<p>S Phase</p> Signup and view all the answers

What is the growth phase?

<p>G1</p> Signup and view all the answers

What is the second growth phase where division occurs?

<p>G2</p> Signup and view all the answers

Flashcards

Protein synthesis location

Ribosomes are the cellular organelles responsible for making proteins.

RNA vs. DNA

RNA is a single-stranded molecule containing uracil, unlike double-stranded DNA containing thymine.

Glycolysis product

Glycolysis breaks down glucose into pyruvic acid.

Meiosis vs. Mitosis

Meiosis creates sex cells with half the chromosomes, while mitosis produces identical daughter cells.

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Hemophilia inheritance

Hemophilia is a sex-linked trait, with a predicted inheritance pattern based on parent genotypes.

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Plant reproductive parts

Plants have separate male (stamen) and female (pistil) reproductive organs.

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Phloem function

Phloem transports food materials throughout the plant stem.

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Xylem function

Xylem transports water from the roots to other parts of the plant.

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Photosynthesis equation

The process of photosynthesis is 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂.

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Carbon cycle decomposition

Decomposition releases carbon dioxide back into the environment.

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Scientific organism naming

The scientific name of an organism consists of the genus and species, e.g., Felis catus.

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Biological classification levels

Organisms are classified into kingdoms, phyla, classes, orders, families, genera, and species (KPCOFGS).

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Enzyme function

Enzymes speed up chemical reactions by lowering activation energy and are proteins.

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Enzyme activity factors

Temperature and pH affect enzyme shape and function.

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Interphase in cell division

Interphase is the active phase of cell division where chromosomes replicate.

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Anaphase

Chromosomes separate and move to opposite ends of the cell during anaphase.

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S phase in cell cycle

DNA replication occurs in the S phase of the cell cycle.

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Mitochondria's function

Mitochondria are the powerhouses of the cell responsible for energy production.

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Golgi apparatus location

The Golgi apparatus is found in protists but not in monerans.

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Lysosome function

Lysosomes are organelles that break down waste and food using digestive enzymes.

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Energy pyramid

The energy pyramid shows the relationships between producers and consumers in an ecosystem.

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Gymnosperm seed type

Gymnosperms have seeds without protective coverings; examples include red cedar and conifers.

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Nitrogen use by plants

Plants utilize soil nitrogen to make proteins.

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Active transport

Active transport uses energy (ATP) to move substances across cell membranes.

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Osmosis and water

Osmosis is water movement across semi-permeable membranes. Water concentration influences cell behavior.

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Mutualism, commensalism, parasitism

Symbiosis includes mutualism (both benefit), commensalism (one benefits, other unaffected), and parasitism (one benefits, other harmed).

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Prokaryotes

Bacteria and blue-green algae qualify as prokaryotes.

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Chlorophyll light absorption

Chlorophyll reflects green light and absorbs blue and red light for photosynthesis.

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Least effective light color

Green light is the least effective color for photosynthesis in plants.

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Photosynthesis light requirement

Light is essential for photosynthesis, with blue light being most effective indoors.

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Sponge asexual reproduction

Fragmentation allows sponges to reproduce asexually by breaking into parts, each developing into a new organism.

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Pathogens

Organisms causing disease are classified as pathogens.

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Study Notes

Protein Synthesis and Cellular Functions

  • Ribosomes are the organelles responsible for protein synthesis.
  • RNA is single-stranded and contains uracil, unlike DNA.
  • The process of glycolysis splits glucose into pyruvic acid.

Reproduction and Genetic Principles

  • Meiosis produces sex cells with half the number of chromosomes, while mitosis creates identical daughter cells.
  • Hemophilia, a sex-linked trait, shows a predicted ratio of offspring with the disease based on parent genotypes.
  • Plants have distinct male (stamen) and female (pistil) reproductive organs.

Plant Biology and Nutrition

  • Phloem conducts food through plant stems, while xylem carries water up the plant.
  • Photosynthesis can be represented by the equation 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂.
  • The role of decomposition in the carbon cycle is to release carbon dioxide back into the environment.

Taxonomy and Classification

  • The scientific name of organisms includes genus and species classifications, e.g., Felis catus for house cats.
  • Organisms are classified into kingdoms, phyla, classes, orders, families, genera, and species.

Enzyme Functionality

  • Enzyme activity is influenced by physical factors such as temperature and pH, affecting their shape and functioning.
  • Enzymes are proteins that act as catalysts, speeding up chemical reactions by lowering activation energy.

Cell Division and Processes

  • Interphase is the active phase of cell division where chromosomes replicate.
  • Anaphase is when chromosomes separate and migrate to opposite ends of the cell.
  • The S phase is characterized by DNA replication.

Cellular Structures and Organelles

  • Mitochondria serve as the site of energy production in cells, while vacuoles provide storage.
  • The Golgi apparatus is found in protists but not in monerans.
  • Lysosomes digest food and break down waste using digestive enzymes.

Energy and Nutrient Cycles

  • The energy pyramid illustrates relationships between producers and consumers.
  • Gymnosperms have seeds without protective coverings; examples include red cedar and coniferous trees.
  • Nitrogen in the soil is utilized by green plants to synthesize proteins.

Membrane Transport and Osmosis

  • Active transport requires ATP to move substances across membranes, while osmosis involves the movement of water across semi-permeable membranes.
  • Water concentration affects cell behavior, as seen in hypotonic solutions leading to cell swelling.

Symbiotic Relationships

  • In symbiosis, mutualism benefits both organisms, while commensalism benefits one without affecting the other. Parasitism benefits one at the expense of the other.
  • Bacteria and blue-green algae are classified together as prokaryotes.

Light Absorption and Photosynthesis

  • Chlorophyll reflects green light, absorbing primarily blue and red light for photosynthesis.
  • The least effective light color for photosynthesis is green.
  • Light is necessary for photosynthesis, and blue light is most effective for growing plants indoors.

Evolution and Ecosystem Dynamics

  • Fragmentation allows sponges to reproduce asexually when torn into pieces, each developing into a new organism.
  • Pathogens are infectious organisms that spread disease.

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Description

This quiz covers fundamental concepts in biology, including protein synthesis, reproductive processes, plant biology, and taxonomy. Test your understanding of how these topics interconnect and their roles in living organisms.

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