General Science Flashcards
The basic unit of life is
the cell
phtosyntesis
oxygen
nucleus is important to a living cell because?
controls most of the activities of the cell
do bacteria have organelles
NO
Geotropism
plant growth responding to the force of gravity
Thigmotropism
A turning or bending growth of a plant or an organism responding to a touch stimulus
Phototropism
A plant growth responding to light stimulus (thinking sunlight…)
Chemotropism
A plant growth responding to chemicals
Vertebrate
an animal of a large group distinguished by the possession of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes. BONE
Bird?
Vertebrate, warm-blooded
Fish?
Vertebrate, cold-blooded
Part of the skeletal system that protects the spinal cord
Vertebrate
Capillary
Delicate blood vessels that exist throughout your body. They transport blood, nutrients and oxygen to cells in your organs and body systems.
A bruise of your skin is the result of?
Broken capillaries
The universe is expanding based on what indicator?
The red shift in the spectra of stars. (object moves away from a viewer –> light waves they produce lengthen -> shift towards the red end of the spectrum)
Function that moves food from one part of the digestive system to another?
peristalsis (muscular contraction of the digestive system that moves food from one part of the system to the next)
Nervous system
Hypothalamus, pons, cortex (parts of the brain)
Excretory system
nephrons, urethra, bladder
Immune system
Antigen, T cells, cilia
Lymphatic system
Lymph nodes, spleen, tonsils
Space between the 2 nerve cells where an electric charge transmits info?
Synapse
Air is less dense than water because
Its molecules are further apart.
100 degree Celsius
212 degree Fahrenheit
Salt helps to melt ice because
It lowers the freezing point of water meaning it makes it harder for water molecules to bond together
The principle gas in the earth’s
atmosphere is
Nitrogen
Why it is harder to stop a baseball flying at 100mph than one flying at 50mph?
Momentum
= mass * velocity
Unoxygenated blood travels to the heart via
Veins
Oxygenated blood travels from the heart to the blood cells throughout the body via
Arteries, aorta, capillaries
In vertebrates, which substance gives the blood cell red color?
Hemoglobin
