Exams & Certification

how many millimeters are there in 1.74 m The correct answer and explanation is: To convert 1.74 meters (m) to millimeters (mm), you need to use the conversion factor between meters and millimeters. There are 1,000 millimeters in one meter. This means that to convert from meters to millimeters, you multiply the number of meters […]

The trans face of the Golgi apparatus is generally closer than the cis face (of the Golgi apparatus) to which of the following eukaryotic structures? A. the inner nuclear membrane B. the smooth endoplasmic reticulum C. the plasma membrane D. the rough endoplasmic reticulum E. the nuclear pores The correct answer and explanation is: The

During hibernation (in animals like the brown bear), after the body’s supply of carbohydrates and excess polypeptides have been used for energy, the hibernating animal must switch to using: A. amylopectin (a storage form of polysaccharides) B. protein (a storage form of amino acids) C. glycogen (a storage form of polysaccharides) D. fat (a storage

How are proteins normally transported into a plant cell’s chloroplast, if they were originally synthesized on ribosomes present in the cytosol (not on the rough endoplasmic reticulum)? A. they are packaged into vesicles with v-SNARES for fusion with their target organelles B. they are unfolded in the translocation channel, then refolded by chaperones C. they

How are prices determined in perfectly competitive markets? In perfectly competitive markets, prices are determined by A. consumers because firms individually are very small relative to the market. B. the interaction of market demand and supply because firms and consumers are price takers. C. consumers because firms sell identical products. D. firms because they each

Which of the following is NOT a mechanism that can mediate horizontal gene transfer? Answer a. Surface adhesion b. Phage transduction c. Conjugation d. DNA transformation The correct answer and explanation is: The correct answer is a. Surface adhesion. Horizontal gene transfer (HGT) is the process by which organisms, especially bacteria, acquire genetic material from

Which of the fractions is equivalent to 2/5 The Correct Answer and Explanation is: The fraction equivalent to 25\frac{2}{5}52​ can be found by multiplying both the numerator (2) and the denominator (5) by the same number, a process known as “scaling” or “multiplying by a factor.” When two fractions have the same ratio between the

Inspired by the example of how background music influences the choice of entree at a restaurant, a statistics student decided to investigate other ways to influence a person’s behavior. Using 60 volunteers, she randomly assigned 20 volunteers to receive a red survey, 20 volunteers to receive a blue survey, and 20 volunteers to receive a

An example of a positive externality is A Increased business profits from a new advertising campaign. B Increased health problems from air pollution. C Lower Covid infection rates because of increased use of masks by the population. D None of the choices are correct. The correct answer and explanation is: The correct answer is C:

The atomic mass of sulfur listed in the periodic table reads 32.066 amu. Sulfur has two main isotopes: sulfur-32 and sulfur-34. Which of the following statements is FALSE? Group of answer choices: Some sulfur atoms contain 18 neutrons. On average, the mass of a sulfur atom is 32.066 amu. Some sulfur atoms weigh 32 amu.