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mart [117]
3 years ago
11

Some molecules are too big to pass through the phospholipid bilayer of the cell membrane. These molecules need to pass through _

_______________ that are embedded in the cell membrane. A) proteins B) ribosome C) cell wall D) carbohydrates
Biology
1 answer:
max2010maxim [7]3 years ago
6 0
Answer A because proteins help move large molecules through the cell membrane 
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olga nikolaevna [1]

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Experimentos de índole descriptiva han demostrado que diferentes tipos de virus no pueden desplazarse por aire, con lo cual estas estrategias resultan efectivas para evitar su esparcimiento en la población

Explanation:

El distanciamiento social y el uso de barbijos son herramientas útiles para combatir la propagación de muchos virus, especialmente aquellos con un alto indice de infección, como es el caso del nuevo Coronavirus Sars-Cov-2 el cual está asociado a un síndrome respiratorio agudo que puede incluso llevar a la muerte del individuo. Sars-Cov-2 es un virus muy peligroso porque todavía no contamos con un tratamiento efectivo tal como, por ejemplo, una vacuna que permita generar una respuesta inmunológica permanente contra el virus. De este modo, es imprescindible evitar la propagación del virus hasta que la comunidad científica pueda desarrollar un tratamiento efectivo.

4 0
3 years ago
Rabbit fur color is controlled by a single gene with two alleles displaying complete dominance. A wild rabbit population inhabit
sukhopar [10]

Answer:

One factor would be adaptation to the environment. The brown rabbit blends in and doesn't stand out to predators

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Explanation:

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3 years ago
The most important primary producers in marine ecosystems are _____. The most important primary producers in marine ecosystems a
Ket [755]

Answer: Diatoms.

Explanation:

Diatoms are single celled group of algae that are found in aquatic habitat both freshwater and marine habitat. The are the most important primary produce in the marine habitat. They are photosynthetic I .e they have chlorophyll which help them to trap light energy from sunlight and uses carbon dioxide and water to produce food. They produce food with the process of photosynthesis.

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Can someone help me with question 2 please
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2 years ago
In this metabolic process, the enzyme RNA polymerase binds RNA nucleotides (the substrates) together by catalyzing the formation
stira [4]

Answer:

TRANSCRIPTION

Explanation:

Transcription is the first process that occurs in the expression of a gene. It involves the synthesis of a mRNA molecule from a DNA template. The DNA molecule, which is located in the nucleus of an eukaryotic cell, is bound to by an enzyme called RNA polymerase in order to synthesize an mRNA molecule/strand.

RNA polymerase synthesizes a mRNA molecule using complementary base pairing rule i.e. Uracil base (U) is synthesized when Adenine (A) is read, Adenine when Thymine (T) is read, Guanine (G) when cytosine (C) is read, Cytosine when guanine is read. These nucleotide bases are then joined together via chemical bonding.

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