What is the evolutionary evidence that endosymbiosis is real?

1 answer:

6 0

Most important are the many striking similarities between prokaryotes (like bacteria) and mitochondria: Membranes — Mitochondria have their own cell membranes, just like a prokaryotic cell does. DNA — Each mitochondrion has its own circular DNA genome, like a bacteria's genome, but much smaller.

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An experimenter is interested in studying the relationship between hunger and aggression. She decides that she will measure aggr

Alika [10]

<h2>Operational </h2>

Explanation:

The operational definition is the description of a specific process, or set of validation tests, accessible to more persons than the definer (i.e., said to be publicly accessible), where it can be repeatedly measured or tested

Operational definitions are also used to define system states or (nonspecific) physical objects by the description of a specific process of preparation which can be repeated

For example in the given example experimenter is using the case of hitting a punching bag to measure the level of aggression in someone

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Why would you expect an earthworm to lack an exoskeleton??

Murrr4er [49]

You would expect an earthworm to have no exoskeleton because as you see it is very flexible and soft. Organisms with such have body parts that are divided and an earthworm do not have any visible parts on them also having an exoskeleton would not allow an organism to move like an earthworm does.

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3 years ago

How do wetlands improve water quality in an ecosystem?

tankabanditka [31]

One of the most important benefits that wetlands provide is their capacity to maintain and improve water quality. When healthy, wetlands have a rich natural diversity of plants and animals. These can act as filtering systems, removing sediment, nutrients and pollutants from water.

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3 years ago

True or false. The absence of a trait cannot be used as a synapomorphy in phylogenetic analysis

kolbaska11 [484]

Answer:

False

Explanation:

Phylogenetic analysis is a means of establishing evolutionary relationships.

Synapomorphy is a shared ("syn") character that is different from the form found in an ancestor that distinguishes a clade (monophyletic group)from other organisms

The absence of a trait can be used as a synapomorphy in phylogenetic analysis. For example, the loss of a trait, such as the loss of legs in snakes, can be a valuable synapomorphy for a clade.

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The number of times per week that exercise is performed is known as ________. Intensity frequency regularity time

Kruka [31]

The number of times per week that exercise is performed is known as frequency.

Exercise frequency answers the question how many times you workout per week total. This includes weight training workouts, cardio workouts.This is value that can vary depends on many factors specific to individual (age, weight, condition). Because of this, it’s impossible to say exactly how often(how many times) everyone should be working out per week total.

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