1.
Who was on the other end of Alexander Graham Bell's first phone call?
Correct Answer
C. Thomas Watson
Explanation
Thomas Watson was on the other end of Alexander Graham Bell's first phone call. Watson was Bell's assistant and the call took place on March 10, 1876. This historic call was made from one room to another, with Bell saying, "Mr. Watson, come here, I want to see you." Watson received the message clearly, marking a significant milestone in the development of the telephone.
2.
What type of object is medicine's Jarvik-7?
Correct Answer
D. Artificial Heart
Explanation
The correct answer is artificial heart. The question asks about the type of object that medicine's Jarvik-7 is. The Jarvik-7 is a type of artificial heart, which means it is a medical device that is designed to replace the function of a real human heart. It is used in cases where a person's heart is not functioning properly or has failed completely. The Jarvik-7 is implanted into the patient's chest and helps to pump blood throughout the body, providing a life-saving solution for those in need of a heart transplant.
3.
Jonas Salk's vaccine put an end to what dreaded disease?
Correct Answer
B. Polio
Explanation
Jonas Salk's vaccine put an end to the dreaded disease of Polio. Polio, also known as poliomyelitis, is a highly contagious viral infection that affects the nervous system and can cause paralysis. Before the development of the vaccine, polio was a major public health concern, causing widespread outbreaks and leaving many people disabled or dead. Salk's vaccine, introduced in the 1950s, was a significant breakthrough in preventing and eradicating polio, leading to a dramatic reduction in cases worldwide.
4.
What does a plant cell have that an animal cell wall does not?
Correct Answer
D. Cellulose Wall
Explanation
A plant cell has a cellulose wall, which provides rigidity and support to the cell. This wall is made up of cellulose fibers and is located outside the cell membrane. On the other hand, an animal cell does not have a cell wall. Instead, it is surrounded by a flexible cell membrane that regulates the movement of substances in and out of the cell. The presence of a cellulose wall is a characteristic feature of plant cells that distinguishes them from animal cells.
5.
Which reptiles belong to the order Chelonia?
Correct Answer
A. Turtles
Explanation
The reptiles that belong to the order Chelonia are turtles. Chelonia is the scientific name for the order of reptiles that includes turtles. Turtles are characterized by their hard protective shells and their ability to retract their heads and limbs into their shells for protection. They are widely distributed across the world and are known for their longevity. Turtles are not toads, alligators, or salamanders, which belong to different orders within the reptile class.
6.
Which group of animals has their legs on the sides of their bodies?
Correct Answer
A. AmpHibians
Explanation
Amphibians have their legs on the sides of their bodies. This allows them to move effectively both on land and in water. Having their legs positioned on the sides helps amphibians to navigate through various terrains and swim efficiently. This adaptation is particularly useful for amphibians as they often live in diverse habitats and need to be able to move and hunt in different environments.
7.
Scientists believe that the earliest birds are descended from what animal group?
Correct Answer
C. Reptiles
Explanation
Birds are believed to have evolved from reptiles. This is supported by fossil evidence, which shows that birds share many anatomical features with reptiles, such as scales on their legs and beaks. Additionally, birds and reptiles both lay eggs and have similar skeletal structures. This suggests a common ancestry between the two groups, with reptiles being the most likely group from which birds evolved.
8.
Through what organ, apart from lungs or gills, do amphibians take in oxygen from the air?
Correct Answer
C. Skin
Explanation
Amphibians have a unique ability to absorb oxygen through their skin. Their skin is thin and moist, allowing oxygen to pass through it and into their bloodstream. This is especially important for amphibians like frogs and salamanders, as they often live in aquatic environments with low oxygen levels. The skin acts as an additional respiratory organ, supplementing the oxygen intake from the lungs or gills. This adaptation allows amphibians to effectively breathe through their skin, making it a crucial organ for their survival.
9.
Scientists use what word for organisms that do not make their own food?
Correct Answer
B. HeterotropHic
Explanation
Heterotrophic is the correct answer because it refers to organisms that cannot produce their own food and instead rely on consuming other organisms or organic matter for energy. This term is used by scientists to categorize organisms that are dependent on external sources of nutrition for survival.
10.
Which type of energy has a low frequency?
Correct Answer
B. Radio waves
Explanation
Radio waves have a low frequency compared to other types of energy. Frequency refers to the number of waves that pass a certain point in a given amount of time. Since radio waves have a low frequency, it means that they have a longer wavelength and lower energy. This is why radio waves are commonly used for communication purposes, such as radio and television broadcasting, as they can travel long distances without losing their strength.
11.
Which minute particles make up waves of electromagnetic energy?
Correct Answer
D. pHotons
Explanation
Photons are minute particles that make up waves of electromagnetic energy. They are the fundamental particles of light and other forms of electromagnetic radiation. Photons have no mass and travel at the speed of light. They carry energy and momentum and interact with matter through various processes such as absorption, emission, and scattering.
12.
What must an object have to exert gravitational force?
Correct Answer
B. Mass
Explanation
An object must have mass in order to exert gravitational force. Mass is a fundamental property of matter that determines the amount of gravitational force it can exert. The greater the mass of an object, the stronger its gravitational force. Therefore, an object's mass is necessary for it to exert any gravitational force on other objects.
13.
Which burrow-dwelling animals are large members of the weasel family?
Correct Answer
B. Badgers
Explanation
Badgers are large members of the weasel family. They are known for their burrowing behavior and are primarily found in North America, Europe, and Asia. Badgers have a stout body, short legs, and a distinctive striped face. They are skilled diggers and create complex underground burrow systems called setts. Badgers are carnivorous and feed on a variety of prey including small mammals, birds, reptiles, and insects. They are solitary animals and are known for their aggressive nature when defending their territory.
14.
Which native North American animal's scientific name is Canis latrans?
Correct Answer
D. Coyote
Explanation
The correct answer is Coyote because Canis latrans is the scientific name for the coyote.
15.
Which water-dwelling mammal is valued among furriers for its soft, dense, lustrous fur?
Correct Answer
A. Otter
Explanation
Otter is the correct answer because it is a water-dwelling mammal that is highly valued among furriers for its soft, dense, and lustrous fur. Otters have a thick layer of fur that helps to keep them warm in cold water, and their fur is highly sought after for its quality and appearance.