What are 3 adaptations of penguins for living in the sea?
What will be an ideal response?
Penguins are unique flightless birds that are more at home in the water than on land. These birds have wings adapted for swimming under water as if in flight. They use their feet as steering devices and they have torpedo-shaped bodies that allow efficient swimming. Penguins are capable of withstanding the cold water around them because of a thick layer of fat under their skin, which acts as insulation.
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The mutant BRCA1 gene imparts a dominantly inherited predisposition to breast cancer
a. True b. False Indicate whether the statement is true or false
Which cells in our body possess the MHC II protein?
A. Erythrocytes B. Neurons C. Thymus cells D. Macrophages E. Nasal epithelial cells
Blood typing is often used as evidence in paternity cases in court. In one case, the mother had blood type B and the child had blood type O. Which of the following blood types could the father NOT have?
A) B B) A C) AB D) O
While cleaning out the attic, you find a packet of seeds that your grandmother gathered from her garden. You plant them outside, and some of them sprout. What was the condition of these germinating seeds while they were in the attic?
A) The endosperm cells were dead; the embryo cells were alive but inactive. B) They were dead, but the embryo cells revived in response to water. C) They were alive and very metabolically active. D) They were alive but dormant.