IdeasCuriosas - Every Question Deserves an Answer Logo

Questions in biology

[Answered] Write the answers to the following questions: Q1. Define reproduction? Q2. Identify and describe the functions of any two plant tissues. How many types of mesophyll tissues are there and what are their functions?

[Answered] Suppose you were preparing to visit a space station that uses photosynthesis to provide you with oxygen. What color lightbulbs should you take with you? A. red and blue B. red C. green D. blue E. green and blue

[Answered] 1. True or False: A virus must infect a living host cell to reproduce. 2. True or False: Viruses have a hard time entering the body due to their size. 3. True or False: The two types of viruses are "common" and "uncommon". 4. True or False: The two categories of antiviral drugs are "antiviral" and "antiretroviral". 5. True or False: Most nonretroviruses must invade the body in large numbers to cause disease. 6. True or False: A virus that is stronger than others and persists even when the body is trying to destroy it is said to have less virulence. 7. True or False: Antiviral drugs are virucidal and work by killing viruses. 8. True or False: Antiviral drugs work by either suppressing viral reproduction or preventing viruses from releasing their genetic material.

[Answered] This item is based on the following choices of feeding habit employed by organisms. I. Using nutrients dissolved in the surrounding medium II. Manufacturing own nutrients by photosynthesis III. Depending on other plants or animals for food Which method/s the protozoan used to get their nutrition? A. I, II and III B. II and III only C. I and II only D. I only

[Answered] Which best links photosynthesis and cellular respiration? a. chemiosmosis b. photosystems c. thylakoid membrane d. four carbon compounds

[Answered] Across 3. outermost cellular layer of the leaf 5. where most photosynthesis takes place in the leaf 8. carry food and water to the cells 10. food-making process occurring in leaves 11. gas necessary for photosynthesis 12. green pigment necessary for photosynthesis Down 1. control the size of the stoma opening 2. allow the exchange of gases between the environment and the air spaces inside the leaf 4. organelles that contain chlorophyll 6. beneath the palisade layer 7. end product of photosynthesis 9. waxy coat of the leaf

[Answered] Read the following statements regarding the features of cloning vectors. (i) The origin of replication is also responsible for controlling the copy number of the linked DNA. (ii) In addition to ori site, the vector requires selectable markers, which help in identifying and eliminating non-transformants and selectively permitting the growth of the transformants. (iii) The vector needs to have at least single recognition site for the commonly used restriction enzymes. (iv) Presence of more than one recognition sites within the vector for one restriction enzyme will generate several fragments which will facilitate the gene cloning. How many of the above statements are correct? 1 2 3 4

[Answered] Which cells are responsible for providing long-lasting true immunity? Any cell, product, or protein with a code different from your own and recognized by your immune system as foreign is known as an ______. Which cell makes and releases antibodies after being "sensitized"? What is the most important part about B cells becoming sensitized against an antigen and learning how to make a specific antibody? Explain naturally acquired active immunity. Explain artificially acquired active immunity. Which type of immunity is the most effective and longest lasting? Explain vaccination and how it affects immunity.

[Answered] In photosynthesis, what is the fate of the oxygen atoms present in CO2? A. in sugar molecules B. in sugar molecules and in water C. as molecular oxygen D. as molecular oxygen and in sugar molecules E. in water

[Answered] In what phase of Interphase does the DNA get replicated?