Q: Q: Which part of the reproductive process only contributes one set of chromosomes? Read this paragraph and choose the correct option from the provided answers: This sperm is ready to penetrate the membrane of this egg. Notice the difference in size of the sperm and egg. Why is the egg so much larger? The egg contributes all the cytoplasm and organelles to the zygote. The sperm only contributes one set of chromosomes. Choices: - ovum - plasma - egg - sperm A:
A: sperm

Q: Q: In what group of animals several forms of asexual reproduction are found? Read this paragraph and choose the correct option from the provided answers: Choices: - crustaceans - arthropods - insects - invertebrates A:
A: invertebrates

Q: Q: What do skeletal muscles enable the body to do? Read this paragraph and choose the correct option from the provided answers: Skeletal Muscles. Skeletal muscles enable the body to move. Choices: - breathe - look - eat - move A:
A: move

Q: Q: What are specialized cells in the brain that monitor the concentration of solutes in the blood called? Read this paragraph and choose the correct option from the provided answers: Many marine invertebrates have internal salt levels matched to their environments, making them isotonic with the water in which they live. Fish, however, must spend approximately five percent of their metabolic energy maintaining osmotic homeostasis. Freshwater fish live in an environment that is hypotonic to their cells. These fish actively take in salt through their gills and excrete diluted urine to rid themselves of excess water. Saltwater fish live in the reverse environment, which is hypertonic to their cells, and they secrete salt through their gills and excrete highly concentrated urine. In vertebrates, the kidneys regulate the amount of water in the body. Osmoreceptors are specialized cells in the brain that monitor the concentration of solutes in the blood. If the levels of solutes increase beyond a certain range, a hormone is released that retards water loss through the kidney and dilutes the blood to safer levels. Animals also have high concentrations of albumin, which is produced by the liver, in their blood. This protein is too large to pass easily through plasma membranes and is a major factor in controlling the osmotic pressures applied to tissues. Choices: - staurikosaurus - sporozoans - ionconcentrate - osmoreceptors A:
A: osmoreceptors