During the embryonic stage, growth is proximodistal, which means that _________.

1 answer:

6 0

The word promixodistal comes from Latin terms meaning "away from the center". This refers to the stage of development where growth occurs from the center of the body to the extremities. For example, an infant learns to use its arms and legs first (to crawl), then its hands (to reach and grasp), and finally its fingers (to pick up and use objects).

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How does the theory of endosymbiosis differ from the autogenous and horizontal gene transfer theories in explaining the evolutio

Llana [10]

<h3>Answer and Explanation;</h3>

Endosymbiotic theory explains the origin of chloroplasts and mitochondria and their double membrane. Mitochondria of eukaryotes evolved from aerobic bacteria living within their host cell and the chloroplasts of eukaryotes evolved from endosymbiotic cyanobacteria.
On the other hand according to the autogenous hypothesis, mitochondria and chloroplasts have evolved within the protoeukaryote cell by compartmentalizing plasmids or vesicles of DNA within a pinched off invagination of the cell membrane.

Endosymbiont theory is the theory that suggests that simple prokaryotic cells were engulfed by larger prokaryotes 1.5 billion years ago.
Autogenous theory is a theory that was proposed as an alternative to endosymbiont theory. proposes that eukaryotic organelles formed by infolding of the plasma membrane.
Horizontal gene transfer theory is an alternative to endosymbiont and autogenous theories for the origin of complex organelles in eukaryotes.

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Suppose that a mouse with black fur has both an allele for black fur and an allele for white fur (Bb). Based on this information

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Answer:

Dominant black fur and recessive white fur

Explanation:

Black fur is showing over white fur so it is a dominant trait and white is recessive

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3 years ago

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How does the equation for cellular respiration compared with the equation for photosynthesis?

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In plants, photosynthesis, occurring in chloroplasts, is an anabolic (bond-building) process whereby CO2 and H2O combine with the use of light (photon) energy. This yields O2 and sugar (i.e. glucose). This occurs in 2 phases: light-dependent and dark (Calvin cycle) reactions, which both continually recycle ADP/ATP and NADP/NADPH.
The catabolic (bond-breaking) process in plants is cellular respiration, in which glucose is broken down with O2 by glycolysis (cytoplasm only) and mitochondrial reactions (Krebs cycle and E.T.C.) to yield CO2 and H2O. These reactions recycle ADP/ATP and NAD/NADH. The CO2 and water produced by cellular respiration feed into the photosynthetic processes, and in turn, the O2 and glucose resulting from photosynthesis supply the respiratory reactions.

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If you perform an unsafe action on the road and no consequences result, you should consider yourself __________ .

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Lucky. You should consider yourself lucky C.

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4 years ago

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Which ecosystem are found in intertidal zones? Check all that apply

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The upper (landward) end of the intertidal zone, dominated by barnacles, limpets, chitons, and other encrusting species; The mid-intertidal zone, where fucoid algae and mussels provide structure and habitat; and. The low-intertidal zone is made up of kelps, fleshy seaweeds, and seagrasses.

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3 years ago