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Home Question Bank Biology Archive 2024 November 01

Biology Questions from Nov 01,2024

Browse the Biology Q&A Archive for Nov 01,2024, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

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Zack's biology lab group is studying how quickly bacteria grow when exposed to sunlight. At the beginning of the experiment, Zack looked at the sample under a microscope and counted 5 bacteria. After the sample was exposed to sunlight for one hour, Zack looked again and counted 35 bacteria. Write an exponential equation in the form \( y=a(b)^{x} \) that can model the number of bacteria, \( y \), after \( x \) hours in sunlight. Use whole numbers, decimals, or simplified fractions for the values of \( a \) and \( b \). ¿Cuál es el nombre del organismo que causa el paludismo? (5 puntos)* El mosquito anofeles El protozoo plasmodium El rizópodo Biologists stocked a lake with 500 fish and estimated the carrying capacity (the maximal population for the fish of that species in that lake) to be 9200 . The number of fish grew to 730 in the first year. Round to four decimal places. a) Find an equation for the number of fish \( P(t) \) after \( t \) years \( P(t)=\square \) b) How long will it take for the population to increase to 4600 (half of the carrying capacity)? It will take 5 Biologists stocked a lake with 400 fish and estimated the carrying capacity (the maximal population for the fish of that species in that lake) to be 5200 . The number of fish grew to 660 in the first year. Round to four decimal places. \( P(t)= \) a) Find an equation for the number of fish \( P(t) \) after \( t \) years b) How long will it take for the population to increase to 2600 (half of the carrying capacity)? It will take Biologists stocked a lake with 800 fish and estimated the carrying capacity (the maximal population for the fish of that species in that lake) to be 6400 . The number of fish grew to 910 in the first year. Round to four decimal places. \( P(t)= \) a) Find an equation for the number of fish \( P(t) \) after \( t \) years b) How long will it take for the population to increase to 3200 (half of the carrying capacity)? It will take Submit Question Répondre par vrai ou faux, a. La strate arbustive est formée de végétaux ligneux dont la hauteur dépasse 5 m \( \square \) Faux \( \quad \square \) Vrai b. Les végétaux dont l'indice de fréquence IF est de V caractérisent le milieu \( \square \) Faux \( \square \) Vrai c. Le filet fauchoir est utilisé pour la collecte des petits insectes, \( \square \) Vrai \( \square \) Faux \( \quad \square \) Assume the population of grizzly bears in the greater Yellowstone area is modeled by the equation \( P(t)=\frac{500}{1+3.6 e^{-.05 t}} \) where \( P(t) \) is the population of grizzly bears \( t \) years after 1990 . \( P(0)=109 \) \( P(0) \) represents and interpret \( P(0) \). Round to the nearest integer. the population of grizzly bears in 2021 when the population will reach 0 bears the maximum population of grizzly bears b) Find the population of grizzly bears predicted by the model in 2021 . Round to the nearest bear. c) When does the model predict the population of grizzly bears will reach 400 bears? Round to the nearest year. In the year \( \square \) bears \( P(t)=\frac{500}{1+3.6 e^{-.05 t}} \) where \( P(t) \) is the population of grizzly bears \( t \) years after 1990 . \( P(0)=109 \) \( P(0) \) represents and interpret \( P(0) \). Round to the nearest integer. the population of grizzly bears in 2021 when the population will reach 0 bears \( \sigma^{2} \) b) Find the population of grizzly bears in 1990 Population: Assume the population of grizzly bears in the greater Yellowstone area is modeled by the equation \( P(t)=\frac{900}{1+3.1 e^{-.05 t}} \) where \( P(t) \) is the population of grizzly bèars \( t \) years after 1990 . a) Find and interpret \( P(0) \). Round to the nearest integer. \( P(0)= \) Blologists stocked a lake with 500 fish and estimated the carrying capacity (the maximal population for the fish of that species in that lake) to be 6100 . The number of fish grew to 610 in the first year. Round to four decimal places. a) Find an equation for the number of fish \( P(t) \) after \( t \) years \( P(t)= \)
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