
Exploring Life: A Biology Quiz
Authored by gabriela hauer
Science
12th Grade

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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das alternativas a seguir melhor descreve a sucessão ecológica primária?
A substituição de uma espécie animal por outra em um ecossistema maduro
A colonização de uma área estéril por espécies pioneiras, levando ao desenvolvimento de um novo ecossistema
O processo pelo qual os nutrientes são reciclados em um ecossistema
A decomposição da matéria orgânica por decompositores
Answer explanation
Primary ecological succession refers to the colonization of a barren area by pioneer species, such as lichens and mosses, which leads to the gradual development of a new ecosystem over time.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual componente NÃO faz parte do modelo do mosaico fluido da membrana celular?
Fosfolipídios
Proteínas
Ácidos nucleicos
Colesterol
Answer explanation
Nucleic acids are not part of the fluid mosaic model of the cell membrane. This model primarily includes phospholipids, proteins, and cholesterol, which contribute to the membrane's structure and function.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual processo ocorre durante a glicólise?
Conversão de glicose em piruvato
Formação de ureia a partir de amônia
Síntese de DNA a partir de nucleotídeos
Produção de oxigênio a partir da água
Answer explanation
During glycolysis, glucose is converted into pyruvate through a series of enzymatic reactions. This process is crucial for cellular respiration and energy production.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Durante qual estágio do desenvolvimento embrionário a blástula se forma?
Fertilização
Clivagem
Gastrulação
Organogênese
Answer explanation
The blastula forms during the cleavage stage of embryonic development, which follows fertilization. This stage involves rapid cell division, leading to the formation of the blastula, a hollow sphere of cells.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual dos seguintes é um processo chave no ciclo do nitrogênio?
Fotossíntese
Fixação de nitrogênio
Eutrofização
Desnaturação
Answer explanation
Nitrogen fixation is a key process in the nitrogen cycle where atmospheric nitrogen is converted into a usable form for plants. This process is essential for maintaining ecosystem health, unlike the other options listed.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Que tipo de relação ecológica existe entre um peixe-remora e um tubarão, onde o remora se beneficia e o tubarão não é afetado?
Mutualismo
Parasitismo
Comensalismo
Competição
Answer explanation
The relationship between a remora fish and a shark is an example of commensalism, where the remora benefits by getting a free ride and food scraps, while the shark remains unaffected.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual molécula é mais diretamente responsável pela permeabilidade seletiva da membrana celular?
DNA
Fosfolipídios
Ribossomos
Celulose
Answer explanation
Phospholipids form the fundamental structure of the cell membrane, creating a bilayer that selectively allows certain molecules to pass while blocking others, thus ensuring selective permeability.
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