Answer the following question given this paragraph: Nervous system Most nematodes possess four longitudinal nerve cords that run along the length of the body in dorsal, ventral, and lateral positions. The ventral nerve cord is better developed than the dorsal or lateral cords. All nerve cords fuse at the anterior end, around the pharynx, to form head ganglia or the "brain" of the worm (which take the form of a ring around the pharynx) as well as at the posterior end to form the tail ganglia. In C. elegans, the nervous system accounts for nearly one-third of the total number of cells in the animal. Reproduction Nematodes employ a variety of reproductive strategies that range from monoecious to dioecious to parthenogenic, depending upon the species under consideration. elegans is a monoecious species and shows development of ova contained in a uterus as well as sperm contained in the spermatheca. The uterus has an external opening known as the vulva. The female genital pore is near the middle of the body, whereas the male's is at the tip. Specialized structures at the tail of the male keep him in place while he deposits sperm with copulatory spicules. Fertilization is internal, and embryonic development starts very soon after fertilization. The embryo is released from the vulva during the gastrulation stage. The embryonic development stage lasts for 14 hours; development then continues through four successive larval stages with ecdysis between each stageL1, L2, L3, and L4ultimately leading to the development of a young male or female adult worm. Adverse environmental conditions like overcrowding and lack of food can result in the formation of an intermediate larval stage known as the dauer larva. Q: The uterus has an external opening known as what? Choices: - cervix - ovaries - fallopian tubes - vulva A:
vulva
(Question)
Answer the following question given this paragraph: Adipose Tissue Adipose tissue produces and secretes several hormones involved in lipid metabolism and storage. One important example is leptin, a protein manufactured by adipose cells that circulates in amounts directly proportional to levels of body fat. Leptin is released in response to food consumption and acts by binding to brain neurons involved in energy intake and expenditure. Binding of leptin produces a feeling of satiety after a meal, thereby reducing appetite. It also appears that the binding of leptin to brain receptors triggers the sympathetic nervous system to regulate bone metabolism, increasing deposition of cortical bone. Adiponectinanother hormone synthesized by adipose cellsappears to reduce cellular insulin resistance and to protect blood vessels from inflammation and atherosclerosis. Its levels are lower in people who are obese, and rise following weight loss. Q: What type of tissue produces and secretes several hormones involved in lipid metabolism and storage? Choices: - hormonal tissue - metabolism tissue - somatic tissue - adipose tissue A:
(Answer)
adipose tissue
Ques: Answer the following question given this paragraph: Scientists have built machines called particle accelerators . These amazing tools smash particles that are smaller than atoms into each other head-on. This creates new particles. Scientists use particle accelerators to learn about nuclear fusion in stars. They can also learn about how atoms came together in the first few minutes of the Universe. Two well-known accelerators are SLAC, in California, and CERN, in Switzerland ( Figure below ). Q: What machines have scientist built to smash particles that are smaller than atoms into each other head-on? Choices: - energy accelerators - nitrogen accelerators - Atom Accelerators - particle accelerators A:
Ans: particle accelerators
(Q).
Answer the following question given this paragraph: Reptiles can be found on every continent except Antarctica. They may live in terrestrial, freshwater, or marine habitats. Most reptiles are carnivores, and large reptiles are the top predators in their ecosystems. Many species of reptiles, especially marine reptiles, are at risk of extinction. Q: What type of animal can be found on every continent except antarctica? Choices: - amphibians - mammals - insects - reptiles A:
(A).
reptiles
Ques:Answer the following question given this paragraph: Oogenesis begins long before birth when an oogonium with the diploid number of chromosomes undergoes mitosis. It produces a diploid daughter cell called a primary oocyte. The primary oocyte, in turn, starts to go through the first cell division of meiosis (meiosis I). However, it does not complete meiosis until much later. The primary oocyte remains in a resting state, nestled in a tiny, immature follicle until puberty. Q: What begins when an oogonium with the diploid number of chromosomes undergoes mitosis? Choices: - germination - morphogenesis - gametogenesis - oogenesis A:

Ans:oogenesis
Ques: Answer the following question given this paragraph: Speed is the distance traveled divided by the time it took to travel that distance. Velocity is the instantaneous speed and direction. Average velocity is the displacement divided by the time. Q: What term is used to describe the distance traveled divided by the time it took to travel that distance? Choices: - movement - motion - velocity - speed A:
Ans:
speed