Answer the following question given this paragraph: Q: Which stage has already been completed by the time sea urchin eggs are released from the female? Choices: - fetus - secondary - mitoses - meiosis A:
meiosis
(Question)
Answer the following question given this paragraph: Group 16 is called the oxygen group. Tellurium is the only metalloid in this group, which also contains three nonmetals and one metal. Q: Group 16 is called the oxygen group. what is the only metalloid in this group? Choices: - cadmium - beryllium - gallium - tellurium A:
(Answer)
tellurium
Ques: Answer the following question given this paragraph: Short and Long Reflexes Somatic reflexes involve sensory neurons that connect sensory receptors to the CNS and motor neurons that project back out to the skeletal muscles. Visceral reflexes that involve the thoracolumbar or craniosacral systems share similar connections. However, there are reflexes that do not need to involve any CNS components. A long reflex has afferent branches that enter the spinal cord or brain and involve the efferent branches, as previously explained. A short reflex is completely peripheral and only involves the local integration of sensory input with motor output (Figure 15.8). Q: A short reflex is completely what and only involves the local integration of sensory input with motor output? Choices: - neuronal - physiological - central - peripheral A:
Ans: peripheral
(Q).
Answer the following question given this paragraph: Kidneys The kidneys participate in several complex endocrine pathways and produce certain hormones. A decline in blood flow to the kidneys stimulates them to release the enzyme renin, triggering the renin-angiotensin-aldosterone (RAAS) system, and stimulating the reabsorption of sodium and water. The reabsorption increases blood flow and blood pressure. The kidneys also play a role in regulating blood calcium levels through the production of calcitriol from vitamin D3, which is released in response to the secretion of parathyroid hormone (PTH). In addition, the kidneys produce the hormone erythropoietin (EPO) in response to low oxygen levels. EPO stimulates the production of red blood cells (erythrocytes) in the bone marrow, thereby increasing oxygen delivery to tissues. You may have heard of EPO as a performance-enhancing drug (in a synthetic form). Q: A decline in blood flow to what organs stimulates release of the enzyme renin, in turn stimulating the reabsorption of sodium and water? Choices: - thyroids - kidneys - lungs - kidneys A:
(A).
kidneys
Ques:Answer the following question given this paragraph: Connective tissue Bone remodeling and repair: bone has mineral structure, and develops tiny fractures, which, under stress, can lead to larger fractures. To combat this, bone is constantly replaced. Osteoclasts channel through existing bone, tear down and leave behind osteoblasts and lacuna, leaving osteocytes. Continually resets mineral structure of bone, and is preventative maintenance. When bone broken, callus forms in open ends, periosteum gives rise to new bone with calcium and new bone matrix, leaves irregular mend. Later, osteoblasts continue fixing over time and slowly removing imperfection. Q: Osteoclasts and osteoblasts play key roles in repair of what? Choices: - heart - liver - brain - bone A:

Ans:bone
Ques: Answer the following question given this paragraph: The many steps in the process of aerobic cellular respiration can be divided into three stages. The first stage, glycolysis, produces ATP without oxygen. Because this part of the cellular respiration pathway is universal, biologists consider it the oldest segment. Note that glycogen and fats can also enter the glycolysis pathway. The second stage is the Krebs Cycle, and the third stage is the electron transport chain. It is during the third stage that chemiosmosis produces numerous ATP molecules. Q: Glycolysis, the krebs cycle, and the electron transport chain are stages in what process? Choices: - cell death - reproduction - mitosis - aerobic cellular respiration A:
Ans:
aerobic cellular respiration