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Biology form 2 revision questions


biology form 2 revision questions

Ii) State basic thermodynamics by pk nag pdf ways in which the root hairs are adapted to their functions the root hair is long/narrow/numerous to increase surface area for absorption of water and mineral salts many mitochondria in cytoplasm to supply energy for active transport of mineral salts are thin walled.
Numerous to provide a large surface area for exchange of materials have sphincter muscles at the junction of the arterioles and capillaries to control movement of blood into them lie close to the body for easy exchange of materials iii.
We will write a custom essay sample on Cell Biology Revision Questions and Answers or any similar topic specifically for you, hire Writer, an allele is an alternative form of a gene and is located at a specific position in a specific chromosome.Pdf File Size: 692 kb File Type: pdf Download File Revision resources File Size: 5804 kb File Type: doc Download File biology_2_revision_sheets.List 3 mechanisms by which the body keeps warm?Attraction of water molecules to the Walls (adhesion) from the stem water enters the xylem of leaves water moves in the xylem vessels of the stem in a continuous (uninterrupted) water column up to the tree leaves Leaves once in the leaves water moves into.Ii) State how traceholes are adapted to gaseous audiobook livros dos espiritos exchange thin walls of tracheoles moist surface large surface area due to numerous tracheoles g) i) What is breathing?Codons are sequences of three nucleotides which specify a particular amino acid to be added during protein synthesis.Living on land, or found on the land.Lysosomes are also found in plant cells only and are involved in the breakdown of larger food molecules into smaller molecules, and digest old cell parts.
When your right hand touches something hot which hemisphere, the right or left, receives information about the hot substance touched?
Any process which speeds up the rate of gaseous exchange between an animal and its surrounding.
State the precautions that must be taken before blood transfusion blood must be disease free sterilized equipment must be used blood of the recipient and that of the donor must b compatible to both ABO and rhesus factor Fresh blood must be used.Monocot root ii) State the similarities and differences between a dicotyledonous and monocotyledonous root.Ribose is found in RNA and is a normal sugar with an OH- group attached to the 2 carbon ring.A centromere is a constriction found on each chromosome that divides the chromosome into a short and a long arm, and also holds the two sister chromatids together.Replication begins by uncoiling of the helix, followed by strand separation by breaking of the hydrogen bonds between the complementary strands, and synthesis of two new strands by complementary base pairing.Functional adaptations refer to the physiological changes that occur in an organisms metabolism in response to change in its environment.The process of elongation then follows.Section C How is the nucleus ( nucleolus) involved in cell division (both types ribosome assembly, and protein synthesis?In both processes, carbon dioxide is released.How does it represent brain activity?Name the two places in the nephrons where water is reabsorbed?Gaseous exchange is through their body surfaces.Cross pollination refers to the transfer of pollen grains from the anthers to the stigma a different plant of the same species.What are the two main processes that occur in the nephrons to purify blood?




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