- A Cick Submit to complete this assessment. Question 30 Photoreceptors detect light. True False
- the choice that best completes the statement or answers the question. Mentiple Choice __ 1. The endosymbiotic theory guifing s that eukaryotic cells.arose from a. one prokaryotic engulfing another prokaryotic cold b. multicellular prokaryotes. C. lightning d. one eukaryotic cell engulfing another eukaryotic cell __ occurreal evolution. According to this theory, which of the following events would need to the cries describing the origin of life on Earth is known as occur first for life to accordi b. onset of photosynthesis b. origin of genetic material C. synthesis of organic molecules d. formation of the plasma membrane __ 3. According to the endosymbiotic theory, which of the following explains why cells that mitochondria like organelles had an evolutionary advantage? a. They were able to photosynthesize C. They were immune to bacterial b. They had more DNA invasion __ d. They were able to make more use of available energy 4. Experiments conducted by Mille and Urey, and by others after them, have demonstrated that molecules for life could have been produced in Earth 's early atmosphere. These molecules include amino acids, carbohydrates, lipids, ATP and nucleotides of DNA and RNA. Which of the following suggests how the genetic material of cells may have evolved to give instructions for the functioning and replication of cells? a. A spark of electricity can catalyze chemical reactions that produce proteins from DNA. C. Cells link amino acids together into proteins, using instructions carried in the DNA and enzymes to catalyze the reactions. b. RNA, like enzymes, can catalyze chemical d. reactions, and some RNA molecules could be self-replicating. Chains of nucleotides form when water evaporates from a solution of nucleotides. 5. Mitochondria provide evidence that eukaryotic cells evolved through endosymbiosis. What features of mitochondria support this theory? are similar in size to bacteria a. Mitochondria contain their own DNA and C.Mitochondria have been found throughout the fossil record. b. Cells that contain mitochondria also contain chloroplasts and chloroplast membranes are similar to bacterial membranes. d. Mitochondria can be produced when sparks of electricity are passed through an environment of gases similar to the conditions of carly Earth
- 3. Think about the PLACE where human fertilization and development take place, these are NOT the same for all animals. Based on the place (environment/internal location) in which the following animals develop, complete the following chart to predict whether or not the animals have a placenta. Humans are done for you. (5) Animal & Fertilization occurs & Development Occurs & Placenta: yes/no, justify your answer Human & in oviduct & in uterus of mother & }(l) Yes, the fetus develops inside the placenta which attaches the developing embryo to the inside of the mother. Frog & & & Turtle & & & Sea Star & & & Pike & & & Crow & & &
- Cells must maintain homeostasis to survive. One method cells use to ensure a stable internal environment is facilitated diffusion. Which of the following is NOT true of facilitated diffusion? Facilitated diffusion is a type of passive transport Facilitated diffusion occurs down a centration gradient. Facilitated diffusion requires energy. Facilitated diffusion does not require energy.
- A rész: Igaz/hamis Jelezze, hogy az állitás igaz-e vagy hamis a scantronján úgy, hogy ''A''-t buborékoljon az igaz és a "B"-t hamis helyett. __ 1. A fogyasztók maguk kêszitik el energiadús ételeiket a Nap energiájának felhasználásával. __ 2. A tápanyagok oda-vissza keringenek az okoszisztémák biotikus és abiotikus részei kozott. __ 3. A fobb lebontók a baktériumok és a gombák. __ 4. A természetes ôkoszisztémában a népesség nõvekedését olyan tényezôk korlátozzák, mint az élettér mennyisége, az élelmiszer, a napfény és a víz. __ 5. Az utódlás jó dolog, és lehetốvé teszi hogy az okoszisztémák felépuljenek a természeti zavarokból __ 6. A viz egy okoszisztéma biotikus osszetevóje. 7. A zōld nõvények mindig a második helyen áilhak a táplálékláncban. __ 8. A fogyasztok élelmiszenáncokon és élelmiszerhalozatokon keresztil adjak át az energiát a termelôknek. __ 9. Egy egyensúlyban lévõ okoszisztéma általaban alacsony biológiai sokfeleséggel rendelkezik. B rész: feleletválasztós Határozza meg azt a lehetôséget, amely a legjobban kiegésziti az állitást vagy válaszol a kérdésre. __ 10. Melyik kifejezés vonatkozik egy kornyezetben lévo osszes fajra? a. egy lakosság C. egy ōkoszisztéma b. egy kozosség d. egyensúlyi __ 11. Melyik elem a kornyezet biotikus osszetevóje? a. hốmérséklet C. szén b. víz d. egy lebontó 12. Melyik élólény része a szárazfoldi okoszisztémának? a. egy halat C. algák b. egy jávorszarvas d. plankton
