science gr8 chptr6 Flashcards
what are the two types of tissues that make up skin
epithelial and connective
2: When leaves detect the decrease in sunlight as winter approaches, what happens?
They reduce the production of chlorophyl and break down whatever’s left causing the leaves to turn red and orange
3: What does a gizzard in an earthworm do?
contains particles of sand and gravel that break down food
4: Explain how a frog that is underwater exchanges gases
When a frog is underwater, its skin becomes permeable to water and gases. Blood vessels in the cells of the moist outer skin allow oxygen to diff use from the water into the bloodstream. In the same way, carbon dioxide diff uses out of the blood cells into the water.
5: Some bacteria can detect chemicals, such as sugar, in their enviornment and move towards them
true
6: What are the two main systems in plants
the root system and the shoot system
Name two types of protists
amoeba and paramecia
List two types of differentiated cells
muscle and epithelial cells
What is cellular differentiation?
the process by which a cell becomes specialized
to perform a specific function
What does an earthworm use to achieve locomotion?
muscle contractions
Explain how humans exchange gas. Start with this sentence starter.
During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs.
Where can you find the flap like stucture that opens when you breathe and closes when you swallow?
The trachea is found in your lower neck and upper chest
Every organism can be classified into one of five smaller groups
protists, fungi, bacteria, plants, animals
What are the two main systems in plants?
The simpliest and most abundant unicellular organism on Earth are
bacteria
Earthworms “suck” in food using the ____
pharynx
Plants use roots to absorb water and nutrients from the soil. Specify smthsmth like tissues tansport water and minerals from the roots to other parts of the plants
xylem vessels are a system of tubes in a plant that transports water and minerals from the roots to the shoots and leaves
Many unicellular organisms live in bodies of water and must move around to find food. Explain how a paramecia Or an amoeba obtains nutrients.
A:
Nutrition in an Amoeba occurs through a process called phagocytosis. Pseudopods extend around the food material and form a vacuole, where its gets broken down to smaller pieces, to then make nutrients
Two or more tissues that work together to perform one or more functions are called
organs
2 types of fungi
field mushrooms and bakers yeast
