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3 years ago

The endosymbiotic theory _____.

Biology

2 answers:

11111nata11111 [884]3 years ago

5 0

2. The endosymbiotic theory suggests that a eukaryotic cell is the result of one prokaryotic cell eating another.

Free_Kalibri [48]3 years ago

4 0

The correct answer is 2. suggests that a prokaryote ate another prokaryote to produce eukaryotes.

Lynn Margulis (1960) put forward the endosymbiotic theory. The theory states that aerobic bacteria, a prokaryotes require oxygen were engulfed by anaerobic bacteria, also prokaryotes which are poisoned by oxygen. They live together as symbiotic partners for mutual benefits. The aerobic bacteria take care of the toxic oxygen for the anaerobic bacteria, in return the anaerobic bacteria would ingested food and protected the aerobic bacteria. Thus, a eukaryotic cell with a double-membrane bound organelle is formed. The inner lipid bilayer is of engulfed bacterial cell plasma membrane, and the outer lipid bilayer is of bacterial cell that engulfed it.

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Steroid hormones and thyroid hormones ________ pass across the plasma membrane; they cause the target cells to ________ that pro

tekilochka [14]

Answer:

can ,synthesize specific proteins

Explanation:

Hormones are chemical signals secreted by animals and plant that are capable of regulating body activities and maintain homeostasis.

They are transported in the circulatory system of the body

The action of hormones can be seen after the hormone has bound to its specific receptor found inside the cell.

For instance, steroid hormone and the thyroid hormones can pass through the plasma membrane to their receptors inside the cells.

When they bind with their receptors, the target cells will synthesize specific proteins that produce the characteristic effect of the hormone.

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3 years ago

What is a special property of stem cells? A. They only require half the energy of a regular cell. B. They don’t need to divide.

swat32

Its D They can turn into a specialized cell

6 0

3 years ago

Why is this conversion of energy from one molecule to another necessary for all cells?

Ivenika [448]

$\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}$

Actually Welcome to the Concept of the energy conversion

=> ATP can be used to store energy for future reactions or be withdrawn to pay for reactions when energy is required by the cell.

=> When one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released, and ATP is converted to adenosine diphosphate (ADP).

8 0

3 years ago

When it comes to something like food preferences, how do genetics and the

k0ka [10]

1. Genetics and environment influence the trait as it depends upon the adaptation made according to availability and environment.

2. Traits are passed onto either parents after fertilization when 2 genes from either parent is received.

3. Dominant trait is responsible for the phenotype of the individual.

4. The expression of gene is seen by the phenotype expressed depending upon the environmental factors.

Explanation:

The food preferences are based on the traits adapted over the time for digestion and method of eating due to natural selection. The occurrence of beneficial trait for digestion become common in the population as these traits are transferred for better survival and evolution.

The traits in an organism is passed on from parents. During fertilization one allele from each parent is passed onto the progeny. 2 alleles together are called gene. In the process of meiosis only one chromosome is present in germ cell hence no homologous chromosome thus only one allele for the trait is present in each parent.

The alleles of dominant trait mask the effect of recessive alleles during phenotype expression. According to law of complete Dominance the dominant trait gets expressed and recessive trait do not get expressed.

The temperature, external environment, chemicals, light factor, diet etc influences the expression of genes in certain organisms. The effect of these can be seen on the phenotype of the organism.

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3 years ago

A student states that earthquakes cannot occur at the center of a tectonic plate's surface—earthquakes occur only at tectonic pl

MrRa [10]

Answer:

a earthquake happens when the plate rub together therefor causing the loud and very very hard vibrations trust me i live in Los Angeles they are no fun at all

Explanation:

3 0

4 years ago

Read 2 more answers