Louisiana State University

Which of the following is found in eukaryotic cells but not in prokaryotic cells? a. DNA b. membrane-enclosed organelles c. cell wall d. plasma membrane - Answer b. membrane-enclosed organelles Which of the following statements supports the hypothesis of "an RNA world" on early Earth? a. Some RNA molecules are important catalysts in modern cells. b. Single-stranded RNA molecules are linear and cannot form three-dimensional shapes. c. The oldest known fossils contain traces ...

A new era of biology began in 1859 when Charles Darwin published The Origin of Species, which focused on the - Answer great diversity of organisms Evolution can be defined by Darwin's phrase - Answer descent with modification Evolution can be viewed as both a - Answer pattern and a process Darwin's ideas had - Answer deep historical roots The Greek philosopher Aristotle viewed species as fixed and - Answer arranged them on a scala naturae The Ol...

What is not a good support of evolution? - Answer Fossils Who placed fossils in an evolutionary context? - Answer Lamarck ________ traits can be passed along to the next generation - Answer Acquired Adaptation by _________, not by individual - Answer Population Survival is not usually random, but is largely dependent upon heritable traits - Answer Survival of the Fittest __________ picks the phenotypes that will survive - Answer Nature The re...

evolution - Answer descent with modification; change over time changes in evolution - Answer a change in the frequency of the alleles of a population -mutation which favors one allele over another -mutation which creates a new allele that is favored time in evolution - Answer several generations for the organism -for bacteria --> a day or two could be plenty -for humans --> may be 200-300 years Charles Darwin - Answer first "convincing" case of ev...

True or False: FOSSILS were used to SUPPORT evolution - Answer False Who placed fossils in an evolutionary context? - Answer Lamarck Lamarck's mechanism of change principle states that _______ traits can be passed along to the next generation - Answer Acquired Darwin's book about natural selection states that adaptation occurs by __________ - Answer Population Darwin defined this as not random, and largely dependent on heritable traits - Answer Sur...

circulation basics - Answer - Right heart pumps to lungs (blood is low in oxygen- blue) - Lungs add oxygen - Left heart pumps to body (blood is high in oxygen- red) - Body uses oxygen - Repeat open CS - Answer Blood pumped from vessels to open cavity and then back again closed CS - Answer -blood and interstitial fluid are physically separated >>differ in components and chemical composition -larger, more active animals need a higher pressure to pump blood to al...

Plants must always compromise between _____ and _____. - Answer maximizing photosynthesis ... minimizing water loss A plant leaf is constructed from a variety of cell types with specialized structures and functions. Many of the properties of leaf cells facilitate some aspect of water transport. The diagram below shows a cross section through a leaf. Drag the labels to the appropriate targets to match the function with the structure indicated in the diagram. Labels may be used once,...

Which of these characteristics is shared by algae and seed plants? - Answer chloroplasts The closest algal relatives of land plants are _____. - Answer charophytes Label the structures on this diagram of a moss. - Answer a. sporophyte b. seta c. sporangium d. foot e. gametophyte f. rhizoid Arrange the events in the life cycle of mosses in the flowchart below. - Answer 1. Mature sporophytes produce haploid spores, dispersed by the wind. 2. Separate spo...

Who created the first "convincing" case of evolution? - Answer Charles Darwin the transformation of the lifeforms on earth over time - Answer evolution Darwin's specific "term" that summarized the concept of evolution, generational change over time - Answer descent with modification Is evolution linear? (Hint: think of it in terms of humans and chimpanzees) - Answer No; when many people think of evolution, they think of it in terms of progressing t...

nutrients - Answer the "materials" needed for life nutrition in all organisms - Answer -acquisition of nutrients -digestion, if required (breaking down to monomers in order to distribute) -distribution of the nutrients throughout the body -synthesis of molecules for the organism's body how plants get their nutrients - Answer starting material: elements and small molecules digestion: usually none distribution: driven by osmosis and evaporation (high energy ap...