BSCI 135 Exam 1 Questions with 100%
Correct Answers
Scientific Method - ✔✔1. Observation
2. Hypothesis: educated, testable guess
3. Experiments: test hypothesis
4. Data Interpretation
5. Conclusion: analyze results, support or reject hypothesis
Theory - ✔✔a hypothesis that has survived many tests and all other
competing hypotheses have been disproved
Law - ✔✔a extensively tested theory, based on evidence, no conflicting
data
Features of Living Things - ✔✔1. Highly organized
2. maintain stable composition
3. use energy from environment
4. respond to stimuli
5. Grow and develop
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6. Reproduce
7. Show variations based on heredity
8. Adapt to environment
Plants are... - ✔✔1. multicellular organisms
2. cellulose-rich cell wall
3. chlorophyll and photosynthetic
4. adapted to life on land (or have descended from land plants)
Plant structure - ✔✔-Shoot
-Root
Shoot - ✔✔-usually above ground
-flowers: where reproduction occurs; fruit and seeds develop
-leaves: site of photosynthesis; blade, petiole
-node: where leaf is attached to the stem
-stem: holds leaves, transports water and nutrients, provides support above
ground
Root - ✔✔-usually below ground
-anchors plant
-absorbs water and minerals
2 Types of nutrients - ✔✔-Macronutrients
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-Micronutrients
Calories - ✔✔-a measure of energy
-amount of energy needed to raise 1 gram of water 1 degree celsius
-food energy is measured in kilocalories (1000 calories)
-humans need 1,200-3,200/day depending on age, sex, and activity level
Macronutrients - ✔✔-needed in large amounts
-3 types: Carbohydrates, Proteins, Fats
Carbohydrates
-type of...
-composed of...
-3 types: - ✔✔-type of macronutrient
-composed of C,H, and O
-3 types: Monosaccharides, Disaccharides, and Polysaccharides
Monosaccharides - ✔✔-type of carbohydrate
-basic building block of all carbohydrates
-ex. glucose (most abundant type, metabolized during cellular respiration
for energy), fructose, and galactose
Disaccharides
3 - ✔✔-composed of two monosaccharides
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-no nutritional value, only calories
-ex. Lactose (milk sugar), maltose, sucrose (glucose + fructose; table
sugar)
Polysaccharides - ✔✔-chain of monosaccharides
-AKA complex carbohydrates
-ex. starch (long glucose chain stored in plants), glycogen (storage form of
glucose in humans), fiber (derived from plants)
Fiber
type of...
comes from...
not ______ but provides ________
can be __________ or ____________ - ✔✔-type of polysaccharide
-comes from cellulose (cell wall of plants)
-not digestible but provides bulk
-can be soluble (reduces cholesterol levels and risk of heart disease) or
insoluble (absorbs water, prevents constipation, and certain cancers)
Proteins - ✔✔-type of macronutrient
-large complex molecules that perform many functions in the body
-made up of smaller building blocks called amino acids