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Juli2301 [7.4K]
3 years ago
15

1) As algas são seres eucariontes, ______________, fotossintetizantes, dotados de ___________, e podem ser _____________ ou mult

icelulares. Qual a alternativa que melhor preenche a lacuna? a) Heterotróficas, clorofila, multicelulares. b) Autótrofos, esqueleto, unicelulares. c) Procariontes, clorofila, unicelulares. d) Autótrofos, clorofila, unicelulares. e) Autótrofos, clorofila, procariontes.
Biology
1 answer:
kirill115 [55]3 years ago
3 0

Answer:

As algas são organismos que anteriormente eram incluídos no Reino Plantae, porém atualmente pertencem ao Reino Protista, sendo a Ficologia (fico = algas; logia = estudo) o ramo da biologia que estuda esses seres: unicelular ou multicelular (filamentosas), eucariontes, fotossintetizantes e viventes em ambientes de água doce (rios, lagos ou superfícies úmidas) ou salgada (mares e oceanos).

Esses organismos autotróficos, dispostos na superfície oceânica (compondo o fitoplâncton), consomem o gás oxigênio dissolvido na água para a sua respiração e liberam através do processo fotossintético cerca de 70 a 90% do oxigênio contido na atmosfera. Recebendo, portanto, a denominação de pulmão do mundo, diferente do que muitos pensam que seja a Floresta Amazônica.

A reprodução assexuada pode ser tanto por divisão binária, isso nas unicelulares, onde a célula se divide ao meio; quanto por fragmentação, mecanismo de cisão de um segmento no talo nas algas multicelulares. Contudo, algumas espécies multicelulares reproduzem por zoosporia, utilizando-se de células flageladas que se desprendem do talo, locomovendo-se até um local favorável para o desenvolvimento.

Explanation:

sorry im not fluent in brazilian

this should give you an idea for your answer

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The gecko's feet contain molecules that are attracted to the molecules on the surface.

Geckos are lizards which belongs to reptile group. They are found in warm climatic regions of the world. Geckos and some other animals can climb smooth surfaces because of presence of Van der waal forces of attraction between the molecules of gecko's feet with molecules of the surface. The force of attraction is generated due to fluctuations or differences in charge present in molecules of feet and that of surface. The charge fluctuations generally comes into sync and generate attractive force.

<h3>What are the features of Geckos ?</h3>

Most geckos are small, soft-skinned reptiles that are often nocturnal in behaviour. A small, robust body, a big head, and often well-developed limbs are other features they have. Each limb's tips are frequently fitted with digits that have adhesive pads.

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The change of cell volume is principally due to the loss or gain of
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Water

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Random orientation of homologous pairs of chromosomes during meiosis I results in alternative arrangements that contribute to ge
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Random orientation of homologous pairs of chromosomes during meiosis I results in alternative arrangements that contribute to genetic variation in offspring. This is called "independent assortment".

<u>Explanation:</u>

The sets of homologous chromosomes, also recognized as bivalents or tetrads, align along the metaphase plate in a random order in metaphase I of meiosis I. Another way for cells to incorporate genetic variation is by spontaneous orientation. Mendel's independent assortment law stipulates that, independently of one another, the alleles of two or more different genes are sorted into gamets.

In other terms, for one gene, the allele that a gamete receives does not affect the allele that is obtained for another.Genetic recombination (by random segregation) and crossing over during meiosis creates daughter cells each containing different combinations of maternally and paternally coded genes.

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3 years ago
What is the flow of genetic information in eukaryotic organisms? What processes link them?
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The flow of genetic information in eukaryotic organisms is DNA.

DNA replication processes link them.


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