Answer the following question given this paragraph: Saprotrophs are the final step in decomposition. They feed on any remaining organic matter that is left after other decomposers do their work. Saprotrophs include fungi and single-celled protozoa. Fungi are the only organisms that can decompose wood. Q: What are the only organisms that can decompose wood? Choices: - bacteria - protists - fossil - fungi A:
fungi
Answer the following question given this paragraph: 7.2 History of cell knowledge The optical microscope was first invented in 17th century. Shortly thereafter scientists began to examine living and dead biological tissues in order to better understand the science of life. Some of the most relevant discovery milestones of the time period include: The invention of the microscope11 , which allowed scientists for the first time to see biological cells Robert Hooke12 in 1665 looked at cork under a microscope and described what he called cork "cells" Anton van Leeuwenhoek13 called the single-celled organisms that he saw under the microscope "animalcules" Matthias Jakob Schleiden14 , a botanist, in 1838 determined that all plants consist of cells Theodor Schwann15 , a zoologist, in 1839 determined that all animals consist of cells Rudolf Virchow16 proposed the theory that all cells arise from previously existing cells In 1838, the botanist Matthias Jakob Schleiden and the physiologist Theodor Schwann discovered that both plant cells and animal cells had nuclei. Based on their observations, the two scientists conceived of the hypothesis that all living things were composed of cells. In 1839, Schwann published 'Microscopic Investigations on the Accordance in the Structure and Growth of Plants and Animals', which contained the first statement of their joint cell theory. Q: In what century was the microscope invented? Choices: - 20th - 16th - 15th - 17th A:
17th
Q: Answer the following question given this paragraph: Q: What fibres are seen in some vertebrates that twitch at rates far faster than any human muscle? Choices: - fast oxidative fibres - slow twitch fibres - fast glycolytic fibres - skeletal muscle fibers A:
A: skeletal muscle fibers
Question: Answer the following question given this paragraph: The cell wall is a rigid layer that surrounds the cell membrane of a plant cell. It's made mainly of the complex carbohydrate called cellulose. The cell wall supports and protects the cell. The cell wall isn't solid like a brick wall. It has tiny holes in it called pores. The pores let water, nutrients, and other substances move into and out of the cell. Q: What rigid layer surrounds the cell membrane of a plant cell? Choices: - bark - epidermis - cuticle - cell wall A:
Answer: cell wall
*Question*
Answer the following question given this paragraph: 11.2 Mechanisms of Evolution There are four factors that can change the allele frequencies of a population. Natural selection works by selecting for alleles that confer beneficial traits or behaviors, while selecting against those for deleterious qualities. Mutations introduce new alleles into a population. Genetic drift stems from the chance occurrence that some individuals have more offspring than others and results in changes in allele frequencies that are random in direction. When individuals leave or join the population, allele frequencies can change as a result of gene flow. Q: Out of the four ways that allele frequencies of a population can be changed, which way is caused by individuals leaving or joining the population? Choices: - Allopatric speciation - spontaneous mutation - mass extinction - gene flow A:
**Answer**
gene flow
Answer the following question given this paragraph: Q: The rest of the energy stored in glucose is lost as what? Choices: - mass - volume - humidity - heat A:
heat