DAT Biology
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| What do lacteals absorb? | Fatty Acids and Glycerol
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| What does denitryfing bacteria do? | Turns ammonia (NH3) into N2
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| What does nitrifying bacteria do? | Turns ammonia (NH3) into nitrites (NO2)
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| What does nitrogen fixing bacteria do? | Turns N2 into nitrates (NO3)
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| What is the dominant species in a climax community? | Shade Trees
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| What component of blood is involved in clot formation? | Platelets
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| Hypothyroidism is always associated with what? | Decreased heart rate
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| Gametes and spores are both? | Haploid
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| What affects plasma concentrations of calcium? | Vitamin D
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| What is geotropism? | The growth of parts of plants towards or away from gravity
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| What do gibberellins do? | 1. Stimulate rapid stem elongation
2. Inhibit formation of new roots
3. Stimulate production of new phloem cells by the cambium
4. Terminate the dormancy of seeds and buds
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| Vitamin K is primarily absorbed in what? | The Large Intestine
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| Which type of muscle is always multi-nucleated? | Skeletal Muscle
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| What uses nematocyst to catch food? | Coelenterates
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| What phylum contains more species than any other phylum? | Arthropods
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| Which phylum is characterized by "tubular feet"? | Enchinoderms
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| What hormone raises concentrations of blood calcium? | Parathyroid Hormone
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| If a person lacks gamma globulin, he would have what symptom? | A low resistance to infection. -Gamma globulin are antibodies.
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| What gland produces both exocrine and endocrine secretions? | The Pancreas
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| True/False Gas exchange is an active process. | False - Gas exchange is a passive process along with exhalation.
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| At the arterial end of a capillary bed, osmotic pressure is... | Less than hydrostatic pressure.
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| At the venule end of a capillary bed, osmotic pressure across the wall is... | Greater than hydrostatic pressure.
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| What is the function of lymph nodes? | To filter lymph.
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| What is the role of auxins? | They help with phototropism (leaf's curve)
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| What is the role of Kinins? | Cell division
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| What is the role of ethylene? | Fruit ripening (senesence = plant aging)
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| What develops into leaves and the upper part of the stem? | Epicotyl
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| What develops into the lower stem and root? | Hypocotyl
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| What stores food for the developing embryo? | Cotyledons/ Seed leaves
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| What is the outer covering; protection/dormancy of a plant? | Seed Coat
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| What feeds the embryo in a plant? | Endosperm
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| What type of digestive system do protozoans have? | Inracellular digestion
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| What type of digestive system do coelenterates have? | Extracellular digestion in gastrovascular cavity
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| What type of digestive system do annelids and arthropods have? | One-way, two-opening digestive tract
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| What is one of the only "positive feedback" systems in the body? | Blood Clotting
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| What does the ductus venosus do? | Connects the umbilical vein to IVC.
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| What connects fetus circulation to umbilical circulation and bipasses the liver? | Ductus Venosus
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| What diverts blood from the fetal lungs? | Ductus Ateriosus
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| What diverts blood from the fetal lungs? | Foramen Ovale
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| What does the foramen ovale connect? | Fetal right atrium to left atrium
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| What does the ductus ateriosus connect? | Pulmonary arteries to aorta
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| What joins bone to muscle? | Tendons
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| What joins bone to bone? | Ligaments
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| What is the flow of urine? | Kidneys - ureters - bladder - out through the urethra.
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| What is the pathway of sperm? | SEVEN UP
Seminiferous tubules
Epididymis
Vas deferens
Ejaculatory duct
Nothing
Urethra
Penis
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| What cells transport water/nutrients up the stem of a plant? | Xylem
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| What cells transport nutrients down the stem of a plant? | Phloem
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| Light reactions take place where? Dark Reactions take place where? | Light reactions - in Grana
Dark reactions - in Stroma
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| In a guard cell what would increased turgor cause it to do? | Open the guard cell, Less turgor will cause it to close
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| What part of the brain is the cerebrum in? | The forebrain in the telencephalon
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| What immediately precedes ovulation? | A peak in LH plasma concentration
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| What is the universal donor? Recipient? | AB = Universal Recipient O= Universal Donor
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| What division are simple plants with a dominant gametophyte generation? | Division Bryophyta
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| What has a notochord but lack vertebrae? | Amphioxus
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| What is included in the "hind brain?" | Cerebellum, Pons, and Medulla
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| What controls the sex drive? | Hypothalamus "thats a whole lotta hyp!"
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| In what type of gene does a repressor bind to the operator to block transcription? | An inducible gene regulation system
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| What type of hormone is progesterone? | A steroid hormone which promotes implantation of the fetus
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| What are the base pairing in DNA? RNA? | DNA - A-T, G-C in RNA A-U, G-C
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| What decreases the affinity of hemoglobin to oxygen? | Decreasing the pH
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| What hormone is derived from an amino acid? | Thyroxine, and other thyroid hormones
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| When ew zygote undergoes cleavage , it calls? | Blastulation
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