Transport in phloem - Study guides, Class notes & Summaries

1 (a) Fig. 1.1 shows two cubes that represent a large and a small multicellular plant. Fig. 1.1 Large multicellular plant Small multicellular plant Length = 2cm Width = 2 cm Depth = 2cm Surface area : volume = 6:1 (i) Using the data provided in Fig. 1.1, calculate the surface area : volume of the large multicellular plant. Surface area: volume = ..........................................................[2] (ii) Explain why a large multicellular plant needs a transport system but a ...

(a) Fig. 1.1 shows two cubes that represent a large and a small multicellular plant. Fig. 1.1 Large multicellular plant Small multicellular plant Length = 2cm Width = 2 cm Depth = 2cm Surface area : volume = 6:1 (i) Using the data provided in Fig. 1.1, calculate the surface area : volume of the large multicellular plant. Surface area: volume = ..........................................................[2] (ii) Explain why a large multicellular plant needs a transport system but a sm...

the calvin cycle reactions are dependent upon a supply of carbon dioxide, NADPH, and ATP which cofactor is involved in the Calvin cycle reactions? NADP+ segments of DNA that are not part of the gene are called introns which of the following is not true of ribosomes they bind only one type of amino acid which part of an operon is incorrectly matched with its function? regulator--binds to the repressor protein cells of the ground tissue system are called parenchyma, collenchyma, and sclerenc...

What happens when a suitable substrate binds to an enzyme? - ANSWER-The active site amino acids bond with the substrate Cyanide binds to cytochrome oxidase at a site where the substrate oxygen would normally bind. This is an example of - ANSWER-competitive inhibition an example of a catabolic reaction is - ANSWER-lactate fermentation what is an anabolic process that is endergonic and endothermic? - ANSWER-CH₄ +2O₂ → CO₂ + 2H₂O ATP yields 7.3 kcal/mol of free energy and it i...

AQA A LEVEL BIOLOGY Paper 1 2024 What is the function of the cell membrane? - ANS To control what enters and leaves the cell, acts as a barrier between the cell and its environment. What structural feature of the cell membrane allows substances to enter/leave? - ANS Partially permeable What is the fluid mosaic model? - ANS States that a membrane is a fluid structure (because phospholipids are constantly moving) with a "mosaic" of various proteins embedded in it Describe t...

Penn Foster Vet Tech Biology-Plant Structure and Function Questions and Answers 100% Pass What are the main functions of plant roots? To anchor the plant, absorb water and nutrients, and store food. What is the role of the stem in plants? To support the plant, transport nutrients and water between roots and leaves, and store nutrients. What are the primary functions of plant leaves? To perform photosynthesis, exchange gases with the environment, and release water vapor. Wh...

IB Biology 9.2 Latest Update Graded A+ Translocation occurs from ___ to ___ Source to sink Phloem tissue - found in stems, roots and leaves - Composed of sieve tubes which are composed of specialized sieve tube cells - Sieve tube cells are separated by sieve plates (perforated walls) - Sieve tube cells are associated with companion cells Translocation Transport of organic solutes in a plant Sources areas of plant where sugars and amino acids are in surplus and are loaded int...

Independent variable - Value does not depend on another factor Dependent variable - Value depends on another factor Controlled variable - Kept the same throughout the experiment What are the two key tissues that allow plants to transport water or organic nutrients, respectively, over long distances? - Xylem - water and minerals from roots to shoots Phloem - transports sugars from photosynthesis to where they are needed In the root, plants need to take up more CO2 or O2? - More O2 Is the n...

Plants Architecture - correct answer-Plant needs i. collection & conversion of solar energy -> leaves ii. positioning & support of leaves -> stems iii. anchorage & absorption -> roots iv. transport -> vascular system Leaf Structure - correct answer-Epidermis, Mesophyll, and Vein (Vascular Bundle) Epidermis contains what? - correct answer-- Cuticle - Guard cells with Stomata Epidermis - correct answer-outermost cell layer of a plant body cutin: (wax) excreted by epider...

Structure and Function in Plants and Animals - Penn Foster Self-Check Questions with Verified Solutions What is the primary function of the xylem in plants? To transport water and dissolved minerals from the roots to other parts of the plant. What is the role of the phloem in plants? To transport the products of photosynthesis, such as sugars, from the leaves to other parts of the plant. What are the three main types of plant tissues? Dermal, vascular, and ground tissues. Wh...