Q: What is the pair of bean-shaped organs situated just above the waist? Read this paragraph and choose the correct option from the provided answers: The kidneys are a pair of bean-shaped organs just above the waist. A cross-section of a kidney is shown in Figure below . The function of the kidney is to filter blood and form urine. Urine is the liquid waste product of the body that is excreted by the urinary system. Nephrons are the structural and functional units of the kidneys. A single kidney may have more than a million nephrons!. Choices: - pancreas - aorta - lungs - kidneys A:
kidneys

(Question)
Q: What is the first stage of cellular respiration called? Read this paragraph and choose the correct option from the provided answers: When was the last time you enjoyed yogurt on your breakfast cereal, or had a tetanus shot? These experiences may appear unconnected, but both relate to bacteria which do not use oxygen to make ATP. In fact, tetanus bacteria cannot survive if oxygen is present. However, Lactobacillus acidophilus (bacteria which make yogurt) and Clostridium tetani (bacteria which cause tetanus or lockjaw) share with nearly all organisms the first stage of cellular respiration, glycolysis ( Figure below ). Because glycolysis is universal, whereas aerobic (oxygen-requiring) cellular respiration is not, most biologists consider it to be the most fundamental and primitive pathway for making ATP. Choices: - appetite - reproduction - photosynthesis - glycolysis A:
(Answer)
glycolysis

Ques: Q: The core of a star collapses during what event, forming a neutron star? Read this paragraph and choose the correct option from the provided answers: The average particle energy needed to observe 19 GeV . (a) What unification of forces is estimated to be 10 is the rest mass in kilograms of a particle that has a rest mass 19 of 10 GeV/c 2 ? (b) How many times the mass of a hydrogen atom is this? 14. The peak intensity of the CMBR occurs at a wavelength of 1.1 mm. (a) What is the energy in eV of a 1.1-mm photon? (b) 9 There are approximately 10 photons for each massive 9 particle in deep space. Calculate the energy of 10 such photons. (c) If the average massive particle in space has a mass half that of a proton, what energy would be created by converting its mass to energy? (d) Does this imply that space is "matter dominated"? Explain briefly. (a) What Hubble constant corresponds to an approximate 10 age of the universe of 10 y? To get an approximate value, assume the expansion rate is constant and calculate the speed at which two galaxies must move apart to be separated by 1 Mly (present average galactic separation) in a time of 10 10 y. (b) Similarly, what Hubble constant corresponds to a 10 universe approximately 210 -y old? 16. Show that the velocity of a star orbiting its galaxy in a circular orbit is inversely proportional to the square root of its orbital radius, assuming the mass of the stars inside its orbit acts like a single mass at the center of the galaxy. You may use an equation from a previous chapter to support your conclusion, but you must justify its use and define all terms used. The core of a star collapses during a supernova, forming a neutron star. Angular momentum of the core is conserved, and so the neutron star spins rapidly. If the initial core radius 5 is 5.010 km and it collapses to 10.0 km, find the neutron star's angular velocity in revolutions per second, given the core's angular velocity was originally 1 revolution per 30.0 days. Using data from the previous problem, find the increase in rotational kinetic energy, given the core's mass is 1.3 times that of our Sun. Where does this increase in kinetic energy come from? 19.... Choices: - spark - blast - gravitational - supernova A:
Ans: supernova

(Q).
Q: In humans and other multicellular organisms, different types of what basic structures are specialized for specific jobs? Read this paragraph and choose the correct option from the provided answers: Different types of cells in the human body are specialized for specific jobs. Do you know the functions of any of the cell types shown here?. Choices: - proteins - lipids - organs - cells A:
(A).
cells

Ques:Q: How does the atomic number change during beta emission? Read this paragraph and choose the correct option from the provided answers: Beta () decay is a more complicated process. Unlike the -emission, which simply expels a particle, the -emission involves the transformation of a neutron in the nucleus to a proton and an electron. The electron is then ejected from the nucleus. In the process, the atomic number increases by one while the atomic weight stays the same. As is the case with -emissions, -emissions are often accompanied by -radiation. Choices: - stays the same - increases by two - decreases by one - increases by one A:

Ans:increases by one

Q: What is the organ in which gas exchanges take place between blood and air? Read this paragraph and choose the correct option from the provided answers: Respiration begins with ventilation. This is the process of moving air in and out of the lungs. The lungs are the organs in which gas exchange takes place between blood and air. Choices: - heart - skin - kidney - lungs A:
lungs