trans nzoia west district mock examination – 2008 - KCPE-KCSE
... O2 diffusises a cross the cell membrane into the protozoa ; concentration of CO 2 in the protozoa is higher than in the water surrounding due to respiration ; CO2 diffuses out into the water across the cell membrane; (Any 3 mks for any 3 points) Curve Y; - it starts with a higher population than X, ...
... O2 diffusises a cross the cell membrane into the protozoa ; concentration of CO 2 in the protozoa is higher than in the water surrounding due to respiration ; CO2 diffuses out into the water across the cell membrane; (Any 3 mks for any 3 points) Curve Y; - it starts with a higher population than X, ...
20.1 Viruses
... 25. RNA viruses have shown an ability to evade antiviral drugs. How do you suppose this is possible, when viruses are not alive? How may the reproductive methods of viruses help the process? ...
... 25. RNA viruses have shown an ability to evade antiviral drugs. How do you suppose this is possible, when viruses are not alive? How may the reproductive methods of viruses help the process? ...
Biology Paper - Acland Burghley School
... B2.8.1 Old and new species Identify the main source of evidence for early forms of life Describe three ways in which fossils may be formed Explain why soft‐bodied forms of life have left few traces behind Describe how fossil evidence can tell us how much or how little different organisms have chan ...
... B2.8.1 Old and new species Identify the main source of evidence for early forms of life Describe three ways in which fossils may be formed Explain why soft‐bodied forms of life have left few traces behind Describe how fossil evidence can tell us how much or how little different organisms have chan ...
www.ourpgs.com
... answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should b ...
... answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should b ...
2.1 Living organisms 2.1.1 Useful products Scientists are looking for
... Cells are the building blocks of all almost all organisms. Plant and animal scientists study cells and the processes that go on in cells to learn more about life itself. Scientists called pathologists examine cells to look for harmful changes that can lead to diseases such as cancer. Other scientist ...
... Cells are the building blocks of all almost all organisms. Plant and animal scientists study cells and the processes that go on in cells to learn more about life itself. Scientists called pathologists examine cells to look for harmful changes that can lead to diseases such as cancer. Other scientist ...
Body Organization Study Guide
... 29. The flow chart above shows how oxygen is taken into the body and used by cells to release energy from food. Which of the following is most likely the missing step? a) Oxygen is released as a waste b) Oxygen is exchanged for carbon dioxide. c) Excess oxygen is carried away from body cells. d) Ox ...
... 29. The flow chart above shows how oxygen is taken into the body and used by cells to release energy from food. Which of the following is most likely the missing step? a) Oxygen is released as a waste b) Oxygen is exchanged for carbon dioxide. c) Excess oxygen is carried away from body cells. d) Ox ...
cell - Amper
... closely to form sheets. Function: Propels substances or objects (foodstuffs, urine, a baby) along internal passageways; involuntary control. Location: Mostly in the walls of hollow organs. ...
... closely to form sheets. Function: Propels substances or objects (foodstuffs, urine, a baby) along internal passageways; involuntary control. Location: Mostly in the walls of hollow organs. ...
SULIT 4551/2 BIOLOGY/ P KERTAS 2 Sept 2011 2 ½ JAM BIOLOGY
... P4 : Then, sperms from the husband are added to secondary oocyte P5 : The sperm and ova fused and become zygote //fertilization is occurred to form zygote P6: The zygote undergoes mitosis to become embryo / eight-cell stage P7: The embryo formed is implanted in the wife’s uterus P8: A baby born is c ...
... P4 : Then, sperms from the husband are added to secondary oocyte P5 : The sperm and ova fused and become zygote //fertilization is occurred to form zygote P6: The zygote undergoes mitosis to become embryo / eight-cell stage P7: The embryo formed is implanted in the wife’s uterus P8: A baby born is c ...
Human Reproduction
... their genetic information from one parent and half of their genetic information from the other parent. This results in a unique individual, different from either parent and their other offspring. The organs that function together in sexual reproduction are called the reproductive system. Other speci ...
... their genetic information from one parent and half of their genetic information from the other parent. This results in a unique individual, different from either parent and their other offspring. The organs that function together in sexual reproduction are called the reproductive system. Other speci ...
Plant Growth Factors: Photosynthesis, Respiration, and Transpiration
... 1. What’s the impact on air temperatures when restrictions in landscape irrigation create droughty urban landscapes? ...
... 1. What’s the impact on air temperatures when restrictions in landscape irrigation create droughty urban landscapes? ...
Animal Systems
... Function - provides frame and support for all other systems and organs Cartilage -- firm, flexible tissues that is not as hard as bone Bones Function -- attach muscles, means of movement, protect internal organs, storage of minerals, blood formation ...
... Function - provides frame and support for all other systems and organs Cartilage -- firm, flexible tissues that is not as hard as bone Bones Function -- attach muscles, means of movement, protect internal organs, storage of minerals, blood formation ...
The HUMAN BODY
... b. Food (nutrients needed to supply energy and raw materials for building new living matter) c. Oxygen (used in releasing energy from nutrients) d. Heat (a byproduct of metabolism; its presence governs the rate at which reactions occur) e. Pressure (force required to facilitate movement of air or fl ...
... b. Food (nutrients needed to supply energy and raw materials for building new living matter) c. Oxygen (used in releasing energy from nutrients) d. Heat (a byproduct of metabolism; its presence governs the rate at which reactions occur) e. Pressure (force required to facilitate movement of air or fl ...
Class IX Science Ch-07 Diversity in Living Organisms
... Ans: (a) (i) Lichens: Some fungal species live in permanent mutually dependent relationships with bluegreen algae. Such relationships are called symbiotic and the symbiotic life forms are called lichens. (ii) Cryptogamae: The reproductive organs of the thallophytes, the bryophytes and the pteridophy ...
... Ans: (a) (i) Lichens: Some fungal species live in permanent mutually dependent relationships with bluegreen algae. Such relationships are called symbiotic and the symbiotic life forms are called lichens. (ii) Cryptogamae: The reproductive organs of the thallophytes, the bryophytes and the pteridophy ...
4. The embryo of flatworms has a third germ tissue
... Cnidarians had a nerve net for conducting impulses, but the platyhelminthes have centralized the nervous system into two longitudinal nerve cords. (faster transmission of nerve impulses). -Well-developed third tissue layer called the mesoderm between the ectoderm and endoderm. ...
... Cnidarians had a nerve net for conducting impulses, but the platyhelminthes have centralized the nervous system into two longitudinal nerve cords. (faster transmission of nerve impulses). -Well-developed third tissue layer called the mesoderm between the ectoderm and endoderm. ...
Human Body Challenge
... a) What type of chemical do glands create? b) The chemical created from part a, then binds to a receptor inside the cell, to make which other molecule? ...
... a) What type of chemical do glands create? b) The chemical created from part a, then binds to a receptor inside the cell, to make which other molecule? ...
Life Processes - 1
... Q1. What is compensation point in photosynthesis? Ans1. When photosynthesis and respiration proceed at the same rate in the plants, then the carbon dioxide produced during respiration is utilised for photosynthesis. The plant during the currency of this process is said to be at compensation point. T ...
... Q1. What is compensation point in photosynthesis? Ans1. When photosynthesis and respiration proceed at the same rate in the plants, then the carbon dioxide produced during respiration is utilised for photosynthesis. The plant during the currency of this process is said to be at compensation point. T ...
The Reproductive System
... • Puberty refers to the time when secondary sex characteristics begin to develop so that sexual maturity—the potential for sexual reproduction—is reached. Secondary sex characteristics (traits that distinguish the two sexes but are not directly part of the reproductive system) ...
... • Puberty refers to the time when secondary sex characteristics begin to develop so that sexual maturity—the potential for sexual reproduction—is reached. Secondary sex characteristics (traits that distinguish the two sexes but are not directly part of the reproductive system) ...
Honors Anatomy and Physiology
... 1. Describe the branches of Anatomy and Physiology 2. Recognize the main functions of each organ system. ...
... 1. Describe the branches of Anatomy and Physiology 2. Recognize the main functions of each organ system. ...
Cell Membrane
... • Skin and blood cells divide often and continually • Neuron cells divide a specific number of times then cease ...
... • Skin and blood cells divide often and continually • Neuron cells divide a specific number of times then cease ...
5th Grade Science Vocabulary ~ Student List
... An inherited behavioral trait such as walking for people and hibernating for bears heredity The process by which traits are transferred from parent to offspring DNA The material that carries all the information about how a living thing will look and function inherited trait A characteristic that a l ...
... An inherited behavioral trait such as walking for people and hibernating for bears heredity The process by which traits are transferred from parent to offspring DNA The material that carries all the information about how a living thing will look and function inherited trait A characteristic that a l ...
Punnett Square Worksheet 1
... they eat more and more of the herbivores, decreasing the herbivore population. It then becomes harder and harder for the carnivores to find herbivores to eat, and the population of carnivores decreases. In this way, the carnivores and herbivores stay in a relatively stable equilibrium, each limiting ...
... they eat more and more of the herbivores, decreasing the herbivore population. It then becomes harder and harder for the carnivores to find herbivores to eat, and the population of carnivores decreases. In this way, the carnivores and herbivores stay in a relatively stable equilibrium, each limiting ...
Monerans Characteristics: → prokaryotes (no membrane bound
... structures called pili 2. as cytoplasm moves through the pili, DNA passes from one cell to another **** Conjugation increases diversity in bacteria, which increases survival. **** Bacteria can reproduce very quickly, some only take 20 minutes! Endospores: Bacteria can adjust to survive bad environme ...
... structures called pili 2. as cytoplasm moves through the pili, DNA passes from one cell to another **** Conjugation increases diversity in bacteria, which increases survival. **** Bacteria can reproduce very quickly, some only take 20 minutes! Endospores: Bacteria can adjust to survive bad environme ...
Lymphatic/Immune - Pasadena City College
... Immature T cells must be able to recognize signals from other parts of the immune system If they don’t – they are destroyed Immature T cells must not recognize proteins on your tissue cells as ‘foreign’ Only 2% of If they do – they are destroyed ...
... Immature T cells must be able to recognize signals from other parts of the immune system If they don’t – they are destroyed Immature T cells must not recognize proteins on your tissue cells as ‘foreign’ Only 2% of If they do – they are destroyed ...
LAB 1: Biology Tools and Techniques • Set up fungus culture
... LAB 3: Plants Pt. 1 – Plant Form and Function Plants are dynamic organisms – influenced by the environment in which they reside. o Acquire resources by the root and shoot systems connected by vascular tissues (continuous network of veins). o Shoot system: apical bud axillary bud node (point of att ...
... LAB 3: Plants Pt. 1 – Plant Form and Function Plants are dynamic organisms – influenced by the environment in which they reside. o Acquire resources by the root and shoot systems connected by vascular tissues (continuous network of veins). o Shoot system: apical bud axillary bud node (point of att ...
Developmental biology
Developmental biology is the study of the process by which animals and plants grow and develop, and is synonymous with ontogeny. In animals most development occurs in embryonic life, but it is also found in regeneration, asexual reproduction and metamorphosis, and in the growth and differentiation of stem cells in the adult organism. In plants, development occurs in embryos, during vegetative reproduction, and in the normal outgrowth of roots, shoots and flowers.Practical outcomes from the study of animal developmental biology have included in vitro fertilization, now widely used in fertility treatment, the understanding of risks from substances that can damage the fetus (teratogens), and the creation of various animal models for human disease which are useful in research. Developmental Biology has also help to generate modern stem cell biology which promises a number of important practical benefits for human health.Many of the processes of development are now well understood, and some major textbooks of the subject are