Spiracles - Study guides, Class notes & Summaries

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 the...

Mark Scheme (Results) Summer 2023 Pearson Edexcel GCE In Biology B (8BI0) Paper 02: Core Physiology and EcologyEdexcel and BTEC Qualifications Edexcel and BTEC qualifications are awarded by Pearson, the UK’s largest awarding body. We provide a wide range of qualifications including academic, vocational, occupational and specific programmes for employers. For further information visit our qualifications websites at or . Alternatively, you can get in touch with us using the details on ...

PNB 2250 Exam 3 Questions And Answers With Verified Study Tests Examples of respiratory structures of terrestrial animals ANS bulk flow with tracheal system and spiracles (insects), cutaneous (frog) Examples of respiratory structures of aquatic animals ANS bulk flow (sponges, cnidarians), gills, water vascular system, arborescent respiratory trees (sea cucumber), cutaneous (leech) Do all aquatic animals necessarily exchange gasses in water? ANS No, some aquatic animals could exchange g...

MIRACLES OF THE RESPIRATORY AND EXCRETORY SYSTEM RYAN KUAR Anatomy and Physiology lab Monday 5 PM - 9 PM Prof. Hanson Spring 2023 Figure #1: Ureter tissue The ureters are tubes made up of smooth muscles that propel urine from the kidneys to the urinary bladder [1]. The ureters begin at the ureteropelvic junction, which lies posteriorly to the renal vein. The ureters travel inferiorly to the abdominal cavity and the uterine artery is found lateral and superior to the ureters [1]. Whe...

Each pesticide business shall present to each customer for whom he or she performs a pest control service involving the application of pesticides a written statement of services or contract setting forth the following information: - Answer- Business name and address of the pesticide business; 2. Name and address of the customer; (All addresses should include the street address or rural route) 3. The name of each pest to be controlled;4. Date and location of the application of the pesticide; 5. C...

Adaptions of early Tetrapods correct answers Addition of teeth Paired fins to limbs Gills replaced by lungs Larynx for vocalization Tongue Increased skeletal support Larger cerebral cortex Devonian correct answers Tetrapods emerge (Ichthyostega & Tiktaalik) Mesozoic correct answers Lissamphibians (Salamanders, Frogs, Toads, Caecilians explode) Tiktaalik correct answers Late Devonian 375 mya Transitional species for salamanders Lungs as well as gills 1st tetrapod with neck S...

Biology Major Field Test Study Set with Complete Solutions (Already Graded A+) RFLP - Answer restriction fragment length polymorphisms; diff in length of fragments made by restriction enz digestion of 2 DNA samples ruminants - Answer variations in: enlarged multichambered stomachs; length of alimentary canal; shape of teeth trachae - Answer resp tubules that make up anthropod resp sys. open to outside through spiracles cloaca - Answer opening found at tail end of reptiles used fo...

As the weather warms, insects____ - ANSWER increase reproduction . Fumigants such as Sulfuryl Flouride are.... - ANSWER inhaled by insects through spiracles a gas at room temperature non-specific and at high concentrations will kill most living things known for NO residual after the gas is cleared from a structure

AQA AS BIOLOGY 7401/1 Paper 1 Question Paper & Mark scheme June 2023 VERIFIED 100% What are the advantages of multi-cellular organisms? - --able to move -able to hunt(likely to he in top if food chain) -able to adapt to environment -specialised body reigons -able to find a mate What are the disadvantages of multi-cellular organisms? - -As they get bigger diffusion is less efficient and specialised exchange surfaces are needed Single felled organisms have a __________ surface area to volum...

Question Number Answer Additional Guidance Mark 1(a) Accept HO for OH (1) OH H OH H Question Number Answer Additional Guidance Mark 1(b) An answer that includes three of the following: • cellulose is made up of beta glucose (monomers) but starch is made up of alpha glucose (monomers) (1) • cellulose contains {unbranched / straight / linear} chains (of glucose) but starch contains branched chains (1) • cellulose contains 1,4 glycosidic bonds but starch contains 1,4 and 1,6 ...