Chapter 1 Flashcards

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1
Q

indigenous knowledge

A

the knowledge of first people’s including scientific and evidence based knowledge that has been built up over years of interaction with the environment

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2
Q

contemporary science

A

an evidence based way of understanding the natural world, asking questions and discovering answers results in a continuous revision of knowledge

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3
Q

school science

A

encompasses both what is considered important to teach in k-12 science and how science is taught, incorporates scientific curiosity and inquiry

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4
Q

digestive system

A

take in food, digest food into smaller molecules and absorb nutrients, and remove undigested food from the body

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5
Q

circulatory system

A

acts as a vessel highway, moving blood and its components (blood cells, water, nutrients, wastes and oxygen and carbon dioxide) throughout the body; has mechanisms to move blood from the heart and to later return using arteries, veins and capillaries

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6
Q

nervous system

A

gathers and interprets information, responds to information, sends signals throughout the body, and helps maintain homeostasis

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7
Q

excretory system

A

gets rid of wastes, both solid and liquid including excess water and reabsorbing nutrients that would otherwise be lost

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8
Q

respiratory system

A

takes in oxygen and removes carbon dioxide and water

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9
Q

skeletal system

A

System of 206 bones in the human body involved in supporting, protecting and allowing for movement in the human body. Highly connected to the muscular system and all other organ systems

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10
Q

muscular system

A

involved in movement- whether of external limbs or organs or internal movement of materials (ie. smooth muscles of the stomach)

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11
Q

endocrine system

A

involved in the release and monitoring of hormones in the body; hormones play a huge role in how the body reacts and how it maintains homeostasis when changes occur

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12
Q

immune system

A

involved in recognition and destruction of pathogens (foreign and harmful substances); helps to maintain homeostasis by helping to keep your body and cells free of infection and attack from foreign substances

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13
Q

integumentary system

A

barrier against infection (first line of defense), helps regulate body temperature, removes excretory waste (urea, water), protects against sun’s UV rays, and produces vitamin D

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14
Q

lymphatic system

A

stores and carries white blood cells that fight disease, collects excess fluid and returns it to the body

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15
Q

reproductive system

A

involved in creating new life through sexual reproduction; includes the formation of gametes (eggs and sperm), the development of the male and female body, hormone release, and development of a baby/fetus (in females)

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16
Q

homeostasis

A

the ability of our body to maintain a dynamic equilibrium- as the external environment changes, our body has ways to react to this change to keep it within a normal range

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17
Q

negative feedback loop

A

a way for our body to return to normal after a change or stimulus, so that the changes triggered will stop at some point

18
Q

hypothalamus

A

connects the brain with the endocrine organs by secreting hormones that influence pituitary secretions; part of brain responsible for controlling hormone secretion from the pituitary; brain structure responsible for stimulating anterior pituitary to secrete FSH and LH

19
Q

dynamic equilibrium

A

the body maintains itself within a certain range depending on the external conditions and how the body is reacting to different situations

20
Q

prokaryote

A

cells that do not contain a nucleus; exist only in bacteria

21
Q

eukaryote

A

cells that have a nucleus and other organelles; exist in our multicellular bodies and as single celled organisms

22
Q

organelles

A

tiny cellular structures that perform specific functions within a cell; embedded within cytoplasm

23
Q

cytoplasm

A

thick solution that fills each cell and is enclosed by cell membrane

24
Q

cell membrane

A

a phospholipid bilayer with embedded globular proteins that controls the flow of matter in and out of the cell

25
Q

nucleus

A

control center of the cell which contains DNA

26
Q

DNA

A

dictates what cell does and how it does it

27
Q

chromatin

A

tangled, spread out form of DNA found inside nuclear membrane

28
Q

chromosomes

A

condensed DNA when cell is ready to divide

29
Q

nuclear membrane

A

a double membrane that encloses the cell nucleus. It serves to separate the chromosomes from the rest of the cell. The nuclear membrane includes an array of small holes or pores that permit the passage of certain materials, such as nucleic acids and proteins, between the nucleus and cytoplasm

30
Q

nucleolus

A

contained in the nucleus; structure where ribosomes are made

31
Q

ribosomes

A

structures found on rough ER (some are free floating) that assemble proteins; the site of protein synthesis in the cytoplasm

32
Q

endoplasmic reticulum

A

rough (with ribosomes attached) or smooth membrane enclosed passageway for transporting material

33
Q

golgi apparatus

A

structures made of groups of flattened sacs used to store, package, and export proteins and other materials produced in the cell

34
Q

vesicles

A

vesicles are small vacuoles used to transport materials

35
Q

vacuoles

A

sac like structures that store different materials

36
Q

lysosomes

A

vesicles filled with hydrolytic enzymes that help to digest food or break down old structures for recycling or removal

37
Q

mitochondria

A

powerhouse of the cell, creates ATP molecules during cellular respiration that provide energy for cells

38
Q

chloroplasts

A

contains chlorophyll, the green pigment involved in the process of photosynthesis

39
Q

hypothesis

A

a proposed explanation for a phenomenon made as a starting point for further investigation

40
Q

theory

A

a well sustained explanation acquired by the scientific method and repeatedly tested and confirmed through observation and experiment

41
Q

fact

A

observation about the world around us

42
Q

law

A

a statement based on repeated experimental observation that describes some phenomenon of nature that always occurs under certain conditions