Xerophytic plant - Study guides, Revision 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...

Diversity and Classification of Plant Exam Questions and Answers Latest Update 2024 Already Passed Domain - Answers Eukarya Kingdom - Answers Plantae Microscopic plants - Answers Cannot be seen by the naked eye, e.g., green algae. Macroscopic plants - Answers Large enough to be seen by the naked eye, e.g., California Redwood. Cryptogams - Answers Non-seed bearing or flowering plants, e.g., bryophytes, ferns, lycopods. Phanerogams - Answers Seed-bearing or flowering plants, e.g., gymnosper...

Capsule (slime) - ANSWER Protects the bacteria from attack by cells of the immune system. Flagellum - ANSWER Rotates to make the cell move. Viruses - ANSWER Acellular. Invade and reproduce inside the cells of other organisms. What is magnification? - ANSWER How much bigger the image is that the specimen. What is resolution? - ANSWER The ability of the microscope to distinguish between two points that are close together. Light/optical microscopes - ANSWER Uses light. Max resolut...

Year 1 Biology AQA A level notes. Achieved an A* in my final exam using these notes. They are based on the mark scheme requirements.

INTRODUCTION The consumption of herbal medicines is increasing steadily throughout the world as an alternative treatment for alleviating a number of health problems including heart diseases, diabetes, high blood pressure and even certain types of cancer. In India use of herbal drugs is much more because of their easy accessibility. Unlike drugs, herbal products are not regulated for purity and potency .There are neither studies on their effectiveness nor control over the quality and safety ...

In large cells of U. marinum, most mitochondria are found close to the cell-surface membrane. In smaller cells, the mitochondria are distributed evenly throughout the cytoplasm. Mitochondria use oxygen during aerobic respiration. Use this information and your knowledge of surface area to volume ratios to suggest an explanation for the position of mitochondria in large U. marinum cells. - answer-1. Large(r) cells have small(er) surface area to volume ratio; 2. (Takes) longer for oxygen to d...