biology 1

• Animal cells - the building blocks that make up all living organisms in the Kingdom Animalia, a type of eukaryotic cell that lacks a cell wall and has a true, membrane-bound nucleus along with other cellular organelles.”
• Cell membrane - A thin semipermeable layer of lipids and proteins surrounding the cell
• Nucleus - It is an organelle that contains several other sub organelles such as nucleolus and chromatins
• Nuclear membrane - A double-membrane structure that surrounds the nucleus ( nucleus envelope )
• Centrosome - A small organelle found near the nucleus that has a thick center with radiating tubes, which has a thick center with radiating tubes
• Lysosome - Round organelles surrounded by a membrane and comprising digestive enzymes which helps in digestion
• Cytoplasm - A jelly-like material which contains all the cell organelles, enclosed within the cell membrane, is contained by a nuclear membrane called the nucleoplasm
• Golgi Apparatus - A flat, smooth layered, sac-like organelle which is located near the nucleus and involved in manufacturing, storing, packing and transporting the particles throughout the cell
• Mitochondria - They are spherical or rod-shaped organelles with a double membrane. They are the powerhouse of the cell
• Ribosomes - Small organelles made up of RNA-rich cytoplasmic granules and they are the sites of protein synthesis
• Endoplasmic reticulum - This cellular organelle is composed of a thin, winding network
• Vacuole - A membrane-bound organelle present inside a cell involved in maintaining shape and storing water, food, wasted etc.
• Nucleopores - They are tiny holes in the nuclear membrane that are involved in the movement of nucleic acids and proteins across the nuclear membrane
• Peroxisomes - are specialized for carrying out oxidate reactions using molecular oxygen they destroy the excess the means of the catalase they contain
• Cytoplasm - is the gelatinous liquid that films the inside of a cell. It is composed of water, salts and various organic molecules
• evolution of biodiversity - result from the interactions between organisms and their environments and the consequences of these interactions over long periods of time.
• Vagina - a muscular canal around 7.5cm long that extends from the neck of the womb to the genitals or vulva
• Uterus - a muscular organ, shaped like an upside-down pear, its lining called the endometrium
• Fallopian tubes - these tubes extends from the womb one on each side, they both open near an ovary
• Ovaries - two small almond-shaped glands that contain ova-sex hormones
• Cervix - Narrow end of the uterus that connects the uterus to the vagina, allow fluids such as menstrual blood to pass
• Menstrual cycle - is a series of natural changes in hormone production and the structure of the uterus and ovaries of the female reproductive system that makes pregnancy possible
• • The shedding of the lining of the uterus due to egg cells being unfertilized - Menstruation Cycle
• Bladder - two seminal vesicles secrete a thick fluid that nourishes the sperm, and stores urine until it is released through the urethra
• Testicles - these are a pair of egg-shaped glands that sit in the scrotum, on the outside of the body
• Penis - To assist with reproduction by transporting sperm to the female reproductive system
• Epididymis - is to store the sperm for maturation and transport it to the vas deferens
• Nervous system - uses electrical impulses to collect, process and respond to information about the environment
• Endocrine system - it produces and uses chemical signals called hormones, which travel through the bloodstream and control the actions of cells and organs