Q: What kind of health problem can occur in the kidney and potentially cause problems with urination? Read this paragraph and choose the correct option from the provided answers: Kidney stones are mineral crystals that form in urine inside the kidney. They may be extremely painful. If they block a ureter, they must be removed so urine can leave the kidney and be excreted. Choices: - infection - diabetes - gallstones - kidney stones A:
kidney stones

(Question)
Q: The brain is said to contain gray matter, while what related structure contains white matter separated into columns? Read this paragraph and choose the correct option from the provided answers: White Columns Just as the gray matter is separated into horns, the white matter of the spinal cord is separated into columns. Ascending tracts of nervous system fibers in these columns carry sensory information up to the brain, whereas descending tracts carry motor commands from the brain. Looking at the spinal cord longitudinally, the columns extend along its length as continuous bands of white matter. Between the two posterior horns of gray matter are the posterior columns. Between the two anterior horns, and bounded by the axons of motor neurons emerging from that gray matter area, are the anterior columns. The white matter on either side of the spinal cord, between the posterior horn and the axons of the anterior horn neurons, are the lateral columns. The posterior columns are composed of axons of ascending tracts. The anterior and lateral columns are composed of many different groups of axons of both ascending and descending tractsthe latter carrying motor commands down from the brain to the spinal cord to control output to the periphery. Choices: - brain stem - amygdala - orbital lobe - spinal cord A:
(Answer)
spinal cord

Ques: Q: An object undergoing circular motion experiences centripetal what? Read this paragraph and choose the correct option from the provided answers: Linear or tangential acceleration refers to changes in the magnitude of velocity but not its direction. We know from Uniform Circular Motion and Gravitation that in circular motion centripetal acceleration, a c , refers to changes in the direction of the velocity but not its magnitude. An object undergoing circular motion experiences centripetal acceleration, as seen in Figure 10.5. Thus, a t and a c are perpendicular and independent of one another. Tangential acceleration a t is directly related to the angular acceleration. Choices: - velocity - vibration - transmission - acceleration A:
Ans: acceleration

(Q).
Q: The reproductive tissues of male and female humans develop similarly in utero until a low level of the hormone testosterone is released from male what? Read this paragraph and choose the correct option from the provided answers: Human Reproductive Anatomy The reproductive tissues of male and female humans develop similarly in utero until a low level of the hormone testosterone is released from male gonads. Testosterone causes the undeveloped tissues to differentiate into male sexual organs. When testosterone is absent, the tissues develop into female sexual tissues. Primitive gonads become testes or ovaries. Tissues that. Choices: - kidneys - liver - bladder - gonads A:
(A).
gonads

Ques:Q: The simplest system is that of contractile vacuoles present in what? Read this paragraph and choose the correct option from the provided answers: 41.3 Excretion Systems Many systems have evolved for excreting wastes that are simpler than the kidney and urinary systems of vertebrate animals. The simplest system is that of contractile vacuoles present in microorganisms. Flame cells and nephridia in worms perform excretory functions and maintain osmotic balance. Some insects have evolved Malpighian tubules to excrete wastes and maintain osmotic balance. Choices: - parasites - macroorganisms - crystals - microorganisms A:

Ans:microorganisms

Q: What consists of these five stages: prophase, prometaphase, metaphase, anaphase, and telophase? Read this paragraph and choose the correct option from the provided answers: 6.2 The Cell Cycle The cell cycle is an orderly sequence of events. Cells on the path to cell division proceed through a series of precisely timed and carefully regulated stages. In eukaryotes, the cell cycle consists of a long preparatory period, called interphase. Interphase is divided into G1, S, and G2 phases. Mitosis consists of five stages: prophase, prometaphase, metaphase, anaphase, and telophase. Mitosis is usually accompanied by cytokinesis, during which the cytoplasmic components of the daughter cells are separated either by an actin ring (animal cells) or by cell plate formation (plant cells). Each step of the cell cycle is monitored by internal controls called checkpoints. There are three major checkpoints in the cell cycle: one near the end of G1, a second at the G2M transition, and the third during metaphase. Choices: - evolution - germination - meiosis - mitosis A:
mitosis