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Questions in biology

[Terjawab] In comparison with the nervous system, the regulatory effects of the endocrine system are: A. rapid to appear but short-lived. B. slow to appear but long-lasting. C. rapid to appear and long-lasting. D. slow to appear and short-lived.

[Terjawab] Cytoplasm acts as a buffer, keeping the intracellular environment at a neutral pH. True or False

[Terjawab] How do you think plants would grow in space? Which tropism(s) would be affected and why?

[Terjawab] Select the features of a synovial joint that cushion to absorb impact: * labrum (hip and shoulder) * synovial fluid * fat * ligaments * bursa * articular cartilage

[Terjawab] 18) A restriction fragment is A) A codon B) A segment of RNA C) A gene D) A segment of DNA 19) Which of the following processes is NOT involved in the production of cDNA? A) Transcription B) Translation C) Reverse transcription D) RNA processing to remove introns 20) The use of an antibiotic resistance gene on a plasmid used in genetic engineering makes A) Direct selection of transformed cells possible B) The recombinant cell more pathogenic C) Replica plating possible D) The recombinant cell unable to survive 21) Which bacterium has been genetically modified to produce a human protein, gamma interferon? A) Bacillus thuringiensis B) Staphylococcus aureus C) E. coli D) Pseudomonas fluorescens 22) Where does the Ti plasmid naturally occur? A) In Thermus aquaticus B) In Saccharomyces cerevisiae C) In Bacillus thuringiensis D) In Agrobacterium tumefaciens 23) If you have inserted a gene in the Ti plasmid, the next step in genetic engineering is A) Inserting the Ti plasmid into Agrobacterium B) Transformation of an animal cell C) Transformation of E. coli with Ti D) Splicing Ti into a plant

[Terjawab] How does the top level of an energy pyramid compare to the bottom level of that energy pyramid? A. It contains the least amount of the total energy. B. It shows a reversal of the flow of energy. C. It contains the greatest amount of the total energy. D. It contains the same amount of the total energy.

[Terjawab] Which urinary structure is affected by an enlarged prostate gland? A. Adrenal cortex B. Ureter C. Adrenal medulla D. Urethra

[Terjawab] What membrane divides the outer ear from the middle ear? A. cochlea B. auricle (pinna) C. tympanic membrane (ear drum) D. vestibule

[Terjawab] In the Functions of Buffers simulation, a good hypothesis would be: Artificial cytoplasm acts as a buffer. True or False

[Terjawab] Question 2 (Multiple Choice Worth 2 points) (05.03 MC) Over millions of years, hominid species learned to use and create tools that became more complex over time. They eventually harnessed fire for light, heat, and cooking food. Which of the following best explains what effect this had on hominid evolution? A. Hominid front limbs became longer in proportion to the rest of their body. B. Hominid brain size decreased as life became easier with the advent of tools. C. Hominid tooth size decreased as they relied on cooked foods and tools for cutting. D. Hominid hands developed smaller thumbs as they developed finer tools. Question 3 (Multiple Choice Worth 2 points) (04.05 MC)