Provide at least two types of evidence that support the hypothesis of endosymbiosis What will be an ideal response?
Concepts to Consider: Chloroplasts and mitochondria have their own circular DNA and
ribosomes; both are enclosed by a double membrane: prokaryote-like protein synthesis
machinery.
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Answer the following statements true (T) or false (F)
1. In the evolution of plants, wood appeared before seeds. 2. Ginkgo trees and humans have similar chromosomal sex-determination systems. 3. The fig tree Ficus tremula produces unique inflorescences that are only accessible to a particular species of pollinating fig wasp Courtella wardi. The inflorescence provides a protected space for the fig wasp to lay eggs which then develop into the next generation of adult fig wasps. This relationship between the fig tree and the fig wasp is an example of coevolution. 4. In the fall, squirrels often harvest large numbers of acorns and bury some of them for future consumption. Over the winter, however, many of these acorns are forgotten by the squirrels and germinate in the spring, producing the next generation of oak trees. This relationship between the squirrel and oak tree is an example of a coevolved seed dispersal mechanism.
Which of the following changes will result in decreased blood flow to a tissue?
A. Decreased peripheral resistance B. Decreased vessel diameter C. Increased blood pressure D. Relaxation of precapillary sphincters E. Increased blood volume
What is a muscle that encircles a tube and controls the movement of food through the digestive tract is called?
What will be an ideal response?
The type of change in chromosomal structure in which a chromosome segment is repeated in the same chromosome is called a(n) _______.
a. inversion b. translocation c. deletion d. duplication