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Questions in biology

[Terjawab] How would a rapid increase in emigration affect a country's population growth rate? Select one: a. Keep it relatively stable. b. Cause an increase in growth rate. c. Cause a decrease in growth rate. d. Cause a sharp increase and then a decrease in the growth rate.

[Terjawab] The structure that allows for the formation of an electrochemical gradient is the ____________. Select one: A. Ribosome B. Thylakoid membrane C. Stroma D. Inner membrane of chloroplast

[Terjawab] Any fracture or system of fractures along which the Earth moves is known as a fault.

[Terjawab] Vascular plants grow to incredible heights. Which of the following features could be credited for their height? A. well-developed vascular system B. brightly colored flowers C. numerous leaves to outcompete other plants for sunlight

[Terjawab] Which phrase best describes osmosis? A. the process by which the cytoplasm physically divides B. the process of DNA synthesis C. the process where distribution of molecules is balanced out by their movement D. the process where a selectively permeable membrane allows the movement of water through it

[Terjawab] A scientist discovers a new organism that is related to clownfish. What can the scientist discover by using molecular clocks? A. The date that the organism first appeared in the fossil record B. The age of the organism C. The amount of time that the two species have been evolving apart D. The number of years that fish have existed

[Terjawab] All organisms are made of four different types of carbon-based molecules. These four types of macromolecules include carbohydrates, proteins, lipids, and which other type of molecule? A) Nucleic acid B) Water C) Glucose

[Terjawab] If a rocky island appeared out of the water from volcanic activity, what type of organism would most likely live there first? Select one: A. Pioneer trees B. Lichens and moss C. Fruit-bearing vines D. Tall shrubs

[Terjawab] How do you think the pointed beak of a woodpecker finch helps it get food?

[Terjawab] Which of the following is not an example of interactions between biotic and abiotic factors in an ecosystem? A. Flowers opening at dawn and closing at night B. Bears hibernating in winter C. Male elk fighting over a female D. Monarch butterflies migrating to Mexico for the winter