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DAT Biology
| Question | Answer |
|---|---|
| What do lacteals absorb? | Fatty Acids and Glycerol |
| What does denitryfing bacteria do? | Turns ammonia (NH3) into N2 |
| What does nitrifying bacteria do? | Turns ammonia (NH3) into nitrites (NO2) |
| What does nitrogen fixing bacteria do? | Turns N2 into nitrates (NO3) |
| What is the dominant species in a climax community? | Shade Trees |
| What component of blood is involved in clot formation? | Platelets |
| Hypothyroidism is always associated with what? | Decreased heart rate |
| Gametes and spores are both? | Haploid |
| What affects plasma concentrations of calcium? | Vitamin D |
| What is geotropism? | The growth of parts of plants towards or away from gravity |
| 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 |
| Vitamin K is primarily absorbed in what? | The Large Intestine |
| Which type of muscle is always multi-nucleated? | Skeletal Muscle |
| What uses nematocyst to catch food? | Coelenterates |
| What phylum contains more species than any other phylum? | Arthropods |
| Which phylum is characterized by "tubular feet"? | Enchinoderms |
| What hormone raises concentrations of blood calcium? | Parathyroid Hormone |
| If a person lacks gamma globulin, he would have what symptom? | A low resistance to infection. -Gamma globulin are antibodies. |
| What gland produces both exocrine and endocrine secretions? | The Pancreas |
| True/False Gas exchange is an active process. | False - Gas exchange is a passive process along with exhalation. |
| At the arterial end of a capillary bed, osmotic pressure is... | Less than hydrostatic pressure. |
| At the venule end of a capillary bed, osmotic pressure across the wall is... | Greater than hydrostatic pressure. |
| What is the function of lymph nodes? | To filter lymph. |
| What is the role of auxins? | They help with phototropism (leaf's curve) |
| What is the role of Kinins? | Cell division |
| What is the role of ethylene? | Fruit ripening (senesence = plant aging) |
| What develops into leaves and the upper part of the stem? | Epicotyl |
| What develops into the lower stem and root? | Hypocotyl |
| What stores food for the developing embryo? | Cotyledons/ Seed leaves |
| What is the outer covering; protection/dormancy of a plant? | Seed Coat |
| What feeds the embryo in a plant? | Endosperm |
| What type of digestive system do protozoans have? | Inracellular digestion |
| What type of digestive system do coelenterates have? | Extracellular digestion in gastrovascular cavity |
| What type of digestive system do annelids and arthropods have? | One-way, two-opening digestive tract |
| What is one of the only "positive feedback" systems in the body? | Blood Clotting |
| What does the ductus venosus do? | Connects the umbilical vein to IVC. |
| What connects fetus circulation to umbilical circulation and bipasses the liver? | Ductus Venosus |
| What diverts blood from the fetal lungs? | Ductus Ateriosus |
| What diverts blood from the fetal lungs? | Foramen Ovale |
| What does the foramen ovale connect? | Fetal right atrium to left atrium |
| What does the ductus ateriosus connect? | Pulmonary arteries to aorta |
| What joins bone to muscle? | Tendons |
| What joins bone to bone? | Ligaments |
| What is the flow of urine? | Kidneys - ureters - bladder - out through the urethra. |
| What is the pathway of sperm? | SEVEN UP Seminiferous tubules Epididymis Vas deferens Ejaculatory duct Nothing Urethra Penis |
| What cells transport water/nutrients up the stem of a plant? | Xylem |
| What cells transport nutrients down the stem of a plant? | Phloem |
| Light reactions take place where? Dark Reactions take place where? | Light reactions - in Grana Dark reactions - in Stroma |
| In a guard cell what would increased turgor cause it to do? | Open the guard cell, Less turgor will cause it to close |
| What part of the brain is the cerebrum in? | The forebrain in the telencephalon |
| What immediately precedes ovulation? | A peak in LH plasma concentration |
| What is the universal donor? Recipient? | AB = Universal Recipient O= Universal Donor |
| What division are simple plants with a dominant gametophyte generation? | Division Bryophyta |
| What has a notochord but lack vertebrae? | Amphioxus |
| What is included in the "hind brain?" | Cerebellum, Pons, and Medulla |
| What controls the sex drive? | Hypothalamus "thats a whole lotta hyp!" |
| In what type of gene does a repressor bind to the operator to block transcription? | An inducible gene regulation system |
| What type of hormone is progesterone? | A steroid hormone which promotes implantation of the fetus |
| What are the base pairing in DNA? RNA? | DNA - A-T, G-C in RNA A-U, G-C |
| What decreases the affinity of hemoglobin to oxygen? | Decreasing the pH |
| What hormone is derived from an amino acid? | Thyroxine, and other thyroid hormones |
| When ew zygote undergoes cleavage , it calls? | Blastulation |
Created by:
sstauffer7
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