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Questions in biology

[Answered] What is a fact about saturated fatty acids? Select one: A. Saturated fats are liquid at room temperature. B. They have a double bond between the carbon atoms. C. Most saturated fats come from animal products. D. Saturated fats are prone to oxidative damage and a short shelf life.

[Answered] If the ovary was removed, which process of the reproductive system would be impacted first? A. Production of eggs B. Fertilization of eggs C. Nourishment of eggs D. Development of eggs

[Answered] The experiment investigates the effect of gibberellic acid (GA) on the growth of dwarf pea plants. Six identical pea plants were planted in pots containing 100 g of soil. The leaves of each plant were sprayed with equal volumes of water containing different masses of GA. The soil in each pot received 20 cm³ water each day, and the plants were continuously exposed to equal light intensity from above. After seven days, the stem height of each plant was measured, and the percentage increase in stem heights was calculated. The results of the experiment are shown in the table below: | Mass of GA applied (micrograms) | Percentage increase in stem height (%) | |---|---| | 0.01 | 90 | | 0.03 | 120 | | 0.05 | 160 | | 0.08 | 240 | | 0.10 | 320 | | 0.11 | 350 | 2.4.1 State a hypothesis for this investigation. 2.4.2 Identify TWO variables, not already mentioned, that should have been controlled to ensure the experimental procedure was valid. 2.4.3 How will an increase in the number of plants used in this investigation influence the results? 2.4.4 Explain the use of gibberellins in agriculture to improve fruit development.

[Answered] While you are swallowing, if something goes 'down the wrong pipe' what does that mean? A) Some material went into the esophagus B) Some material went into the nasal cavity C) Some material went into the trachea

[Answered] Fill in the missing word in the sentence below: Fetal viability occurs at _____ weeks.

[Answered] The fertile females theory has been used to explain the transmission of genes that promote A. erotic plasticity. B. a same-sex sexual orientation. C. female orgasmic disorder. D. refractory periods.

[Answered] Which of the following reproductive organs carries sperm from the epididymis to the urethra? A. Testicle B. Vas deferens C. Prostate D. Seminal vesicles

[Answered] GIT-12. Which of the following is NOT a feature of smooth muscle cells in the external muscle layers (longitudinal and circumferential) of the intestines? They are connected together by gap junctions. They have spontaneous oscillations of membrane potential that each last for several seconds. They are innervated by both excitatory and inhibitory motor neurons. The motor neurons that excite them have cell bodies located in the spinal cord. They are electrically coupled to their neighbouring smooth muscle cells.

[Answered] What is the union of two gametes from two individual organisms called? A. Inoculation B. Recombination C. Fertilization D. Ovulation

[Answered] Which of the following is an accessory organ that does not come into direct contact with food? A) Small intestine B) Liver C) Stomach D) Esophagus