Biological Classification Questions and Answers

Amy and Rory have a son with blue eyes (bb). Which of the following cannot be true? Amy is homozygous recessive with blue eyes (bb) and Rory is heterozygous with brown eyes (Bb). Amy and Rory are both homozygous dominant for brown eyes (BB). Amy and Rory are both homozygous recessive with blue eyes (bb) Amy and Rory are both heterozygous with brown eyes (Bb).

Kingdom Animalia is an incredibly diverse group. To date, scientists have formally named & described approximately _ different species of animals. 1.3 million 14 billion 200 thousand 7.5 million 10 million

isomers are 2 molecules which use the same atoms to make very different compounds. If they are mirror-images of each other, they are called isomers. Left- and right-handed isomers are referred to as

Which of the following is FALSE about bacterial endospores? A) they are a means of bacterial reproduction B) they contain a copy of the bacterial chromosome C) they give rise to a single cell D) they are resistant to high heat and lack of water

Which of the following is not true about the slime layer/capsule? A) It is used to adhere to surfaces. B) It may be composed of polysaccharide. C) If present, it is located between the cell membrane and the cell wall. D) It may protect against dehydration. E) It may protect the bacterium from being phagocytosed by a white blood cell.

Which of the following is a FALSE statement regarding red tide? A) it can occur on both the west and the east coasts of the United States B) it is caused by dinoflagellates C) it may result in paralytic shellfish poisoning D) it can be treated with antibacterial drugs E) it can result in the production of a neurotoxin

Which of the following is a FALSE statement about fungi? A) they can carry out photosynthesis B) they have cell walls C) some fungal species can reproduce both sexually and asexually D) they are eukaryotes E) they are heterotrophs

Enterobius vermicularis is Select one: a. a whipworm. b. common only to the tropics and subtropics. c. an intestinal helminth that easily contaminates fingers and fomites. d. often fatal in heavy infestations. e. All of the choices are correct.

Which of the following statements regarding sepsis is incorrect? Select one: a. The presence of microbes in the blood results in increased viscosity, and a rise in blood pressure is a hallmark of sepsis. b. The Gram-negative cell envelope stimulates an inflammatory response that leads to endotoxic shock. c. Both gram-negative and gram-positive bacteria in the blood can induce sepsis. d. A sample of blood plated on a variety of bacterial media is a good method to identify the causative organism in sepsis.

Where on the microscope are the objective lenses attached to? stage base aperature nosepiece eyepiece

Javier and his twin sister both have the same science exam. Javier sleeps for 9 hours the night before the exam and his sister sleeps for 6 hours. After they take the test, they both compare their test grades. Independent Variable Dependent Variable

How did the invention of the steamboat in the early 1800s promote economic development in Georgia? A. It allowed farmers to rapidly transport their livestock to Atlanta's meatpacking district. B. It allowed factory owners to inexpensively import coal and steel from other states. C. It allowed workers to easily migrate to the state to take jobs in Georgia's many factories. D. It allowed farmers to quickly ship cotton to port cities for transport to overseas markets.

Discuss viruses with regard to structure, classification, multiplication cycle, cultivation techniques, detection and treatment methods.

List three differences between schistosomes and other more typical flukes.

How do index fossils help scientists establish how old rocks and other fossils are? In your answer, include fossils in the same layer of rock, in a lower layer of rock, and in a higher layer of rock compared to an index fossil.

Which of the following would INCREASE the productivity of plant when added to an ecosystem? A. soil B. nitrogen C. oxygen

Imagine you're a researcher studying the mechanism of chemotaxis. You make a mutant strain of bacteria that lose the ability to spin their basal bodies in a clockwise direction. What effect would this have on your bacterial strain? They would be unable to travel in any direction at all, and would be stuck in one place indefinitely. They would carry out chemotaxis somewhat normally, but just a lot more slowly. They would end up travelling in a beneficial direction much more quickly than before. They would be unable to change direction, and therefore a lot less likely to get to where they want to go.

Which of the following statements is true regarding C. difficile? C. difficile has decreased in the U.S. over the past 5 years C. difficile is an unusual cause of healthcare-related diarrhea C. difficile is an increasing cause of diarrhea in the community setting C. difficile is an infrequent cause of diarrhea in long-term care settings

Which of these is LEAST likely to be a feature of a biofilm? easily permeated by antibiotics contains multiple bacterial species contains extracellular polysaccharides potential to contaminate medical implant devices

Select the true statements from the list. Cyanobacteria are ancestors of modern plants. Sulfur bacteria perform oxygenic photosynthesis. Purple nonsulfur bacteria fix nitrogen. Cyanobacteria contain chlorophyll a which is the same photosynthetic pigment found in land plants.

Which of these is the best description of a type-three secretion system? a virulence factor that injects bacterial proteins into host cells. a system that detects external stimuli and triggers internal responses a molecular motor that reverses direction a large, non-specific, trimeric pore in the outer membrane of Gram-negative bacteria

If you were to conduct this week's NATURAL SELECTION lab simulation using a BLACK & WHITE CHECKERED habitat/background, in which BOTH extremely dark BLACK moths & extremely light WHITE moths would be equally likely to survive predation by birds (be selected FOR), but GREY moths would always be easily seen & killed (be selected AGAINST), what type of selection would be operating? directional stabilizing sexual disruptive artificial

Brain-heart infusion broth (BHIB) would best be described as: a) an enrichment medium b) a differential medium c) a defined or synthetic medium d) a complex medium e) a selective medium

If you wish to aseptically pick up a sample of cells from a liquid culture, it would usually be best to use a(n): a) inoculating needle b) inoculating loop c) sterile toothpick d) all of the above are equally effective

To observe the ribosomes within a cell, which of the following types of microscopes would be best? a) scanning electron microscope b) brightfield light microscope c) transmission electron microscope d) darkfield light microscope

With respect to the topological density of closed circular DNA, if the linking number and the twist number are not the same, there must be writhe if the linking number decreases, the twists must decrease writhes are positive if the twists are greater than the linking number all of the above are true none of the above are true

Read the excerpt from the Boston non-importation agreement, which appears here. What is the purpose of this promise? to declare independence from Great Britain to force Parliament to repeal the Townshend Acts to extend the Townshend Acts until at least 1769 We will not, from and after the 1st of January 1769, import into this province any tea, paper, glass, or painters colours, until the act imposing duties on those articles shall be repealed. - Boston Non-Importation Agreement 1768

Select the correct answer. What is a tribute nation? A. a nation that pays another nation for protection B. a nation that dominates a weak nation C. a nation that is not dependent on any other nation D. a nation that is frequently attacked by foreigners ENE

The liquid medium that can be used to support the growth of both aerobes and anaerobes is known as two of these are correct candle jar fluid thioglycollate medium anaerobe jar

What was issued by the German government in 1916 to appease the United States and promised an end to unrestricted submarine warfare? The Sussex Pledge The Schlieffen Plan The Zimmerman Telegram. The Lusitania Doctrine

Diep did some research about classification for a science report. She learned that until 150 years ago, scientists recognized only two groups of organisms: plants and animals. Now, scientists also recognize several groups of microscopic organisms. How should Diep explain why scientists decided to classify organisms into more groups?

Identify the mass represented in the image. Please enter the numerical answer only without units of measure.

Tailless nonhuman primates are commonly called: apes primates hominins Homo habilis

Which of the following is not an advantage of compartmentalising eukaryote cells? a. Faster cell division b. Improved protection for DNA c. Improves cellular efficiency d. Allows cells to become specialised e. Speeds up biochemical reactions

How did MRSA become resistant to methicillin? mutation in a porin gene acquired a penicillin binding protein that had low affinity for methicillin mutation in a drug efflux pump acquired a beta-lactamase that could destroy penicilin

Drag and drop the description to its correct category. Slime layer Capsule Fimbriae Pili S-layer Loosely organized layer outside of the cell wall Highly organized layer outside of the cell wall Easily washed off Contribute to pathogenicity Composed of polysaccharides, glycoproteins, or glycolipids Functions as the cell wall in Archaea = Long protein appendage (few in number) Short bristle-like proteins projecting from the cell (number in the hundreds) Involved in the transfer of DNA from cell to cell Composed of polysaccharides or proteins

Suppose Mr. M finally fulfilled his dreams and got Jennifer Lawrence to agree to go on a date with him. To impress her, he decided to invite her for a home cooked meal. However, being the bad cook that he is, Mr. M undercooked the meal and infected the love of his life with E. coli. Calculate the growth of this bacteria over the span of 5 hours if the infection started with just 5 organisms and they reproduced exponentially.

Drag and drop each statement to determine the type of slide preparation treatment it is involved in. Wet Mount Heat Fixing Chemical fixing Uses a slide warmer Uses a coverslip Terminates tissue degradation Used to view living organisms Uses formaldehyde Microorganisms are killed

Drag and drop the organism to its correct Domain. Domain Archaea Domain Bacteria Domain Eukarya Halophiles Plants Spirochetes Methanococcus Cyanobacteria Animals Gram positives Fungi Ciliates Proteobacteria

For each characteristic, decide whether the statement describes algae, protozoa, fungi, or helminths Cell wall composed of cellulose Parasitic worms Move by pseudopodia, cilia, or flagella Source of penicillin Yeasts and molds Important decomposers Source of agar

Match the field of study on the left to its description on the right. Field of Microbiology Bacteriology Mycology Protozoology Parasitology Virology Immunology Description Study of viruses Study of protozoa Study of the immune system Study of fungi Study of helminths Study of bacteria

Which reactant is oxidized and which is reduce in this reaction? N₂H4 + 0₂ ⇒ N₂ + 2H₂O 1. Oxidized =_____ 2. Reduced =_____

Imagine that the average July temperature on a beautiful tropical island is 40 °C. Suppose further that this past July, the average temperature was 42 °C. What was the temperature anomaly for this past July?

Which of the following types of media would be appropriate to use in order to culture a fastidious organism? Check All That Apply Nutrient agar Yeast extract agar Inorganic salt broth Glucose salt broth

You developed a new chemical that has germicidal properties. It has a decimal reduction time of 10 minutes on E. coli under a certain set of conditions. How long (in minutes) would you have to treat one million E. coli cells with this germicide and conditions to theoretically have 1 E. coli cell left alive?

Which lab method is used to determine the cell count of only the live bacteria in a sample, i.e. no dead cells counted or detected by the me turbidity measurement dry weight measurement serial dilutions and plate count direct microscopic count microbiologists counting cells using all fingers and toes

Thermophiles grow best at human body temperature and are often human pathogens. True False

Why did the Guerreros set up a table at the block party? A. They wanted to meet the mayor. B. They wanted to open a restaurant. C. Their house was located at the end of the block. D. They hoped the block party would help them meet their neigh What helped you answer?

A biofilm is best described as artificially maintained lab cultures a single layer of bacteria on a surface a multilayer community of mixed microbial species adhering to a surface a pure culture of bacteria in clumps moving over a surface a popular YouTube video showing how bacteria live in nature

Order the four steps of Koch's postulates as they would normally be applied. 4 2 3 1 Isolate the suspected microbe from an infected host and cultivate it in pure culture in the laboratory. Find evidence of a particular microbe in every case of a particular disease. Inoculate a susceptible healthy subject with the laboratory isolate of the potential pathogen and observe the resultant disease. Reisolate the disease agent from the test subject, which now shows signs of disease.