Assessment 4 — 7/5/24
Cards (30)
- root:
- absorbs water and mineral from the soils
- anchor the plant to the soil
- how water moves up the plant:
- xylem cell— water transport system of the plant
- excretion in humas:
- kidney
- ureter
- bladder
- urethra
- kidneys:
- filters blood
- remove excess water from blood
- urea: a waste product of protein breakdown
- urea dissolved in water is urine
- transpiration: the loss of water vapor from leaves
- why plants need water?
- support—if a plant collapses it is wilted (as it doesn’t have water)
- transport
- cooling
- photosynthesis
- waste: excess material not needed in the body
- kidney stones: mineral hardens that blocks filter
- healthy fetus, don’t do:
- drugs
- alcohol
- medications
- Gametes: egg + sperm cell
- fertilization: fusion of egg & sperm cell
- chromosomes: long strands of DNA that carry genes and are found in the nucleus of a cell
- genes: helps control a specific characteristic within the organism
- the chemical substance chromosomes are made up of: DNA
- DNA in a cell determines what a cell does
- XX: girl — XY: boy
- zygote: the new cell when the nucleus cell of sperm and egg cell join together
- Variation: difference within a species
- variation cost by:
- different genetic information (DNA)
- environment — natural selection: variation -DNA-> the best result survives -> populations grow
- man intervention — artificial selection
- Amplitude: distance between zero to the peak
- frequency: how often a waveform is
- Frequency = Pitch — Amplitude = Loudness
- amplification (reinforcing)
- 2 sound wave with the same amplitude and frequency
- frequency: stays the same — amplitude: louder
- cancellation:
- two sound wave same frequency and amplitude yet on the opposite sound
- the result would be cancelled (none)
- interference of sound:
- cancellation
- amplification
- unit of wave: Hz (Hertz)amplitude: usually in mm
- frequency: number of waves/time
- sounds: are made when an object vibrates