Biology 185 INSTRUCTIONS short answers LEGIBLX When you are ryu TRUE (A)/FALSE (
ID: 214301 • Letter: B
Question
Biology 185 INSTRUCTIONS short answers LEGIBLX When you are ryu TRUE (A)/FALSE (B): (1.5 pt cach) r work. Mark your scantron CLEARLYand write your till-in and cover u are done, you may hand in your exam Not anwern LEGIBLx when you are done, you may hand ia your santro poists on this animals share a more acceria oit on sto fungi and of the products of double fertilization. cell is not capable of donating a copy of the F plasmid Virulent phages replicate using only the lytic cve is the result of genetic recombination that occurs during meiosis Fungi and aniation found in bacterial populations result of Seed endos An F Stanley Miller's experiment showed that mple molecules couldher combine into One of the characteristics that sets are ha acids isem has an analogous structure to the root viruses apart from living organisms is that their genomes are always composed of R cap called the 'shoot cap organic compounds like The ather than s of browsms in the world are conifers that are all found in the state of Califormia The largest, ta tallest and oldest dark red because they lack the pigment 10- Red algseappe are typically found in the leaves of a plant. (K) is considered a macronutrient 12 13. plant cells that serve to transport water throughout the plants structures. are multicellular organisms. 15. All eukaryotes Multiple Cholce: (1.8 pts each) 16. Which of the following human host cell? a. Malaria b. Tuberculosis c Influenza d. AIDS e. Herpes 17. The only oxygen-producing phototrophic prokaryotes found on Earth are known b. Spirochates e Green algae Which of the following traits do all protists have in common? a. Unicellularity b. A membrane-bound nucleus c. Autotrophy d. All of the above are correct e. Both a and b are correct 18. 19. Imagine that on a hike one day, you come across a tree and decide to drive an iron stake into it one meter above the ground. 30 years later, you come back to that same tree and find that the iron stake is still there. From what you have learned about plant growth, you know that the stake is now positioned: a. Several feet above your head b. Close to the base of the tree partly covered in soil c. In the same place you left it but deeper inside the trunk d. On the other side of the trunk (ie. it has rotated 180 degrees e. Sticking out of an overhead branch around the trunk)
Explanation / Answer
I think you need help with 4 and 6 in True/False section, and 16-19 multiple choice questions.
Let me explain them one by one.
4. This is TRUE because - Endosperm is formed when the two sperm nuclei inside a pollen grain reach the interior of a female gametophyte to form a primary endosperm cell. The cell so created in the process, develops into the endosperm. Since two sperm nuclei fuse with female gametophyte hence it is double fertilization.
6. This is True because- At the end of his experiment Stanley Miller found several different types of amino acids, as well as simple carbohydrates. He concluded that simple molecules spontaneously combine to give rise to structural molecules such as amino acids and carbohydrates.
16. Retro-virus uses reverse transcriptase to transcribe its genome in human hosts. One of the diseases caused by retrovirus in humans is Acquired Immunodificiency Synndrome or AIDS. Therefore your answer is (d).
17. Bacteria are prokaryotes and the only known phototropic bacteria found on Earth is cyanobacteria. Therefore your answer is (a). Other organism that are given- Spirochates are chemoautotrophs, Photobacteria is not an organism, Proteobacteria are heterotrophs, Green algae are phototrophic but they are not prokaryotes, they are eukaryotes.
18. Protists are uni-cellular eukaryotes hence they have membrane bound nucleus. However, not all the protists are autotrophs, some are heterotrophs and chemotrophs also. Therefore your answer is (e).
19. The iron stake should go deeper into the trunk as the trunk of a tree swells in size as it ages. Therefore your answer is (c).
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