Archives: Quiz

This graph represents three different populations. Use it to answer the following questions. If all populations occupy different areas that are approximately the same size, which population will have the lowest density after 3 years? A) Population A B) Population […]

Which is the most abundant kind of tissue in most animals? A) connective B) epithelial C) blood D) muscle What name is given to the region where sea meets land? A) pelagic realm B) intertidal zone C) benthic realm D) […]

The principle that energy cannot be created or destroyed is known as ________. A) cellular respiration B) conservation of energy C) conservation of heat D) entropy A protist that contains contractile vacuoles most likely lives ________. A) in a marine […]

After replication, ________. A) each new DNA double helix consists of two old strands B) each new DNA double helix consists of one old strand and one new strand C) each new DNA double helix consists of two new strands […]

Use the following information to answer the following questions. Malaria is an infectious disease caused by a unicellular eukaryotic organism belonging to the genus Plasmodium. These eukaryotic organisms are transmitted from one person to another by the female Anopheles mosquito […]

Which one of the following is TRUE? A) An enzyme’s function depends on its three-dimensional shape. B) Enzymes work generally on a broad range of substrates. C) Enzymes are used up in chemical reactions. D) Enzymes emerge changed from the […]

How does Helicobacter pylori cause gastric ulcers in humans? A) It neutralizes the acids of the stomach. B) It causes the production of excess acid in the stomach. C) It damages the stomach’s mucus coat. D) It causes the stomach […]

Which one of the following is most similar to the mechanism of an enzyme inhibitor? A) keeping someone from parking by parking in their designated spot B) driving the wrong way on a one-way street C) forgetting to put a […]

The 2n number for the cell depicted here is ________. A) one B) two C) four D) eight Some friends are trying to make wine in their basement. They’ve added yeast to a sweet grape juice mixture and have allowed […]

Which of the following is a colonial form of green algae? A) Volvox B) Giardia C) Paramecium D) Plasmodium Examine the figure below. According to the figure, cladistic analysis indicates that crocodiles are more closely related to ________ than to […]

Please read the following scenario to answer the following questions. Michigan’s Isle Royale is an island located in Lake Superior that is 45 miles long and 9 miles wide. Ecologists estimate that the moose population on the island has been […]

Which of the following is an aspect of asexual reproduction that is sometimes disadvantageous? A) It allows animals that do not move around to produce offspring without finding mates. B) It allows an animal to produce many offspring quickly. C) […]

Which of the following best describes the role of plant root nodules in plants such as peas and beans? A) They house nitrogen-fixing bacteria. B) They help absorb nutrients from the soil. C) They house mycorrhizae. D) They store nutrients. […]

Which group of fishes includes a lineage that migrated out of fresh water and adapted to life on land? A) ray-finned fishes B) jawless fishes C) lobe-finned fishes D) cartilaginous fishes The shared genetic code of all life on Earth […]

Which of the following would likely be the most difficult to kill if you were you to can your own food? A) streptococci B) endospores C) biofilms D) staphylococci The Antarctic icefishes are the only known vertebrates to lack hemoglobin. […]

Examine the figure below. If blood glucose levels decline, ________. A) the pancreas releases more glucagon, which causes glucose to be released into the blood B) the pancreas releases more insulin, which causes glucose to be released into the blood […]

In bacteria, what name is given to a cluster of genes with related functions, along with their DNA control sequences? A) operon B) operator C) promoter D) exon Which of the following is produced during the light reactions of photosynthesis? […]

The four most common elements found in living organisms are ________. A) nitrogen, oxygen, phosphorus, and carbon B) carbon, oxygen, nitrogen, and hydrogen C) carbon, oxygen, potassium, and calcium D) oxygen, calcium, hydrogen, and carbon The tendency of molecules of […]

In humans, which blood vessels have valves? A) arteries in the neck B) arterioles C) capillaries D) veins Epithelial tissues A) cause body movements. B) cover both external and internal body surfaces. C) sense stimuli. D) form a framework that […]

Human social behavior appears to be A) exclusively a product of our genes. B) determined by the environment. C) a product of our genes, external influences, and environment. D) unrelated to genetics. Guppies from Trinidad form two distinct populations that […]

Anti-evolutionary thinkers sometimes argue that natural selection could not produce a complex structure like the vertebrate eye. They claim that all of the parts of the eye must have arisen at once, asking why natural selection would favor the development […]

What name is given to the sheet of muscle that helps move air in and out of the lungs? A) trachea B) alveolus C) diaphragm D) bronchus Figure A. Changes in permeability of tubules in the kidney in response to […]

Which of the following statements about the ATP molecule is true? A) It contains five phosphate groups. B) Extremely stable bonds link the second and third phosphate groups. C) It contains the sugar glucose. D) It releases energy when one […]

Photoautotrophs A) make sugar by using organic raw materials. B) produce organic molecules from inorganic molecules. C) eat other organisms that use light energy to make food molecules. D) include only the green plants. Which of the following serves as […]

Textile mills often release dye color and toxic by-products into rivers and streams, which may then taint groundwater. Fungi associated with mangrove trees have been shown to reduce both colors and toxicity in tainted groundwater. Suppose that in 1990, fungal […]

Which of the following structures is the first to emerge from the germinating seed of a eudicot such as the garden bean? A) the embryonic shoot hook B) cotyledons C) the embryonic root D) the shoot sheath Which of the […]

In the figure, the shoot emerged through the soil toward the light rather than growing down in the direction of the roots due to A) thigmotropism. B) phototropism. C) gravitropism. D) circadian rhythm. Which of the following statements regarding diffusion […]

When sarcomeres contract, they generate force (tension). However, the amount of force generated depends on the sarcomere length and the amount of thick and thin filament overlap. Below is a figure that details the forcegenerating properties of a single sarcomere. […]

In an average ecosystem, about how much energy is present in the organisms at a given trophic level compared to the organisms at the next higher trophic level? A) a tenth as much B) half as much C) twice as […]

In bowerbirds, the divergence illustrated in the figure is based on A) how often females visit the bower built by males. B) the color of the plumage of the females. C) the females’ preference for types of bower. D) the […]

Secretion is the movement of substances such as drugs or toxic molecules from the ________ into the ________. A) nephron tubule; glomerulus B) glomerulus; nephron tubule C) blood; filtrate D) urinary bladder; outside The function of coenzyme A in the […]

Use the figure below to answer the questions that follow. Which part of the figure above shows an organ? A) part A B) part B C) part C D) part D Answer: C A mutant protist is found in which […]

A common aspect of having a cold is nose congestion (‘stuffy nose”). Air is not able to flow past your olfactory receptors, so you cannot detect smells. When eating, it is olfactory receptors, and not taste receptors, that detect the […]

The membranous compartmentalization of a cell A) divides the cell into two equal-sized halves. B) allows different chemical conditions to be maintained in different parts of the cell. C) requires the presence of a cell wall. D) is common to […]

The greatest challenge facing the zoned reserve systems of Costa Rica is A) high predation by jaguars. B) forest fires. C) soil erosion. D) the growing human population. Antigens can be A) proteins. B) large polysaccharides that protrude from virus […]

Which of the following statements is not consistent with Darwin’s theory of natural selection? A) Individuals in a population exhibit variations, some of which are passed from parents to offspring. B) Individual organisms experience genetic change during their life spans […]

A scientist suspects that the food in an ecosystem may have been contaminated with radioactive nitrogen over a period of months. Which of the following substances could be examined for radioactivity to test the hypothesis? A) the cell walls of […]

Dinoflagellates are important to coral and coral-dwelling animals because they A) produce energy that is used by coral animals through photosynthesis. B) provide shelter for the fast-growing seaweeds associated with coral. C) produce CO2 and nitrogen for coral. D) are […]

Most angiosperms are dicots, and most dicots are A) cycads. B) gymnosperms. C) eudicots. D) mosses. Which two groups of protists produce hard, mineralized skeletal structures or cell walls that contribute to marine sediments and form fossils? A) green algae […]

Which of the following factors contributes to the flow of blood in veins? A) skeletal muscle contractions B) the number of red blood cells in venous blood C) the diameter of capillaries D) blood pressure generated by the heart Signal […]

A plant cell in a hypotonic solution A) becomes turgid because of an inflow of water. B) bursts because of an inflow of water. C) shrivels because of an outflow of water. D) wilts because of an outflow of water. […]

When taken by pregnant women, ________ decreases the chance of neural tube defects in infants. A) folic acid B) vitamin C C) vitamin K D) calcium A population of deer has a per capita rate of increase of 0.1 deer […]

Which of the following plant parts commonly contributes to asexual reproduction? A) seeds B) roots C) flowers D) fruits Which of the following is a function of the vertebrate liver? A) combining ammonia and carbon dioxide to form urea B) […]

A pathologist who wants to examine a patient’s liver cells to determine if the mitochondria have an internal structural defect will likely need to use a A) light microscope. B) transmission electron microscope. C) scanning electron microscope. D) chromatin stain. […]

The graph below shows records of temperature (light gray line) and CO2 (dark gray line) over the past 1,000 years. CO2 is recorded in parts per million (ppm). If you focus on the data from the mid-1900s (indicated by the […]

Which of the following statements regarding genetic testing is false? A) Genetic testing before birth requires the collection of fetal cells. B) Carrier testing helps determine whether a person carries a potentially harmful disorder. C) The screening of newborns can […]

Menstruation A) is triggered by an LH surge. B) is triggered by HCG. C) is triggered by an increase in the levels of estrogen and progesterone. D) coincides with the beginning of the pre-ovulatory phase of the ovarian cycle. NADH […]

A peanut farmer decides that she can make more money growing cotton and so plants her fields with cotton. The terrific yield of her fields is so encouraging that she continues to plant cotton for several more years, but each […]

A plant’s first line of defense against infection is A) Avr genes. B) its epidermis. C) R genes. D) salicylic acid. Which of the following processes underlies the thigmotropic behavior of a green bean tendril? A) rotation of the tendril […]

Which of the following results from stimulation by the sympathetic nervous system? A) release of glucose from the liver B) decreased heart rate C) stimulation of the digestive organs D) constriction of the bronchi ________ makes it possible to trace […]