science -boiligy Flashcards
What are the seven characteristics of life? Use these characteristics to explain why a rock is not living and a flower is.
The seven characteristics of life are Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, and Nutrition. A rock is nonliving because it can’t move respire use scenes, grow, reproduce, excrete, and take in nutrition. Whereas a flower can do all the characteristics above except for moving because
What are the two types of microscopes used in a high school laboratory?
light microscope and stereo microscope
What are the main components of a light microscope? Find and label a diagram of a light microscope.
The head The base The arm The stage Resolving noise piece Objective lens Course focus Fine focus Illuminator/ light
List the steps required to prepare a specimen for a microscope slide.
Place a drop of water in the slide
Put the thing you are observing in
Carefully put the cover strip on.
Wipe off excess water
What are the main components of a cell?
The main parts of a cell is the cell wall-if a plant, cell membrane, cytoplasm, Mitochondria, Chloroplasts, vacuole and the nucleus.
What is the function of the Nucleus
controls and regulates the activities of the cell, carries the genes of the cell.
what is the function of a cell wall
provides tensile strength and protection against mechanical and osmotic stress.
what is the function of Cytoplasm
provides a platform upon which other organelles can operate within the cell.
what is the function of Mitochondria
generates most of the chemical energy needed to power the cell’s biochemical reactions.
what is the function of Chloroplasts
converts light energy into relatively stable chemical energy via the photosynthetic process.
What does photosynthesis do for plants?
transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel.
show the difference between plant and animal cells.
The only difference between a plant and an animal cell is that plants have a cell wall but animals don’t and a plant has chloroplast.
Describe the levels of organisation in multicellular organisms. Give examples from each level.
Cell-red blood cell Tissue- skin Organ- the hart Organ system- digestive system Organism- human
List 6 different body systems
Skeletal system Cardiovascular system Nervous system Digestive System Reproductive System Muscular System
Explain the difference between xylem and phloem.
Xylem is the complex tissue of plants that helps in the transportation of water and nutrients in the plant. Phloem refers to the living tissue which helps in the transportation of food and organic materials in the plant.
