______ _______ is the energy requiring process of pumping molecules and ions across membrane against a concentration gradient.

How is meiosis different from mitosis?

Reil [10]

D Meiosis produces 4 new cells

5 0

2 years ago

Menciona 2 propiedades de una onda ??

viva [34]

Answer:

una propiedad que varía y la otra que permanece constante cuando la onda pasa de un medio a otro. Las dos propiedades son: i) Longitud de onda ii) Frecuencia

Explanation:

Hope it helps :)

7 0

2 years ago

What do you compare an object to when determining the object's motion?

andrew-mc [135]

The reference point = a object used for comparison to determine if something is in motion.

An object is in motion if it changes position relative to a reference point.

You assume that the reference point is stationary, or not moving.

5 0

2 years ago

Billy thinks evolution is slow and continuous. He believes in

timurjin [86]

Answer:

The correct answer is - Gradualism.

Explanation:

Gradualism is the theory that new species evolved from existing species through progressive, frequently subtle changes as opposed to through unexpected, significant changes. The little changes are accepted to bring about distinguishable changes over long periods of time.

Gradualism is a model that explains the process of evolution that alludes to the minuscule varieties in a life form or in the society that occur after some time to improve a fit for creatures and people in their condition. These varieties permit them to endure and flourish, bringing about the moderate and predictable procedure of progress in the entire populace.

Thus, the correct answer is - Gradualism.

6 0

2 years ago

In a common reflex arc, after a sensory nerve signal is processed by interneurons in the integration center, where does the sign

kobusy [5.1K]

In a reflex arc, after a sensory nerve signal is processed by interneurons in the integration center, the signal goes to the motor neuron. The answer is motor neurons.

<h3>What is the reflex arc?</h3>

The reflex arc refers to the sequence of events since the body receives an external stimulus until it reacts.

In general terms,

1) A stimulus of varying nature reaches the body.

2) The peripheric nervous system -PNS- receives the stimulus and sends this information to the central nervous system -CNS-.

3) The CNS processes the information and sends another signal as a response to the stimulus.

Five elements compose the reflex arc, which are receptors, three types of neurons, and effectors.

The neurons involved in the mechanism are:

• Afferent or sensorial neurons

• Interneurons

• Efferent or motor neurons

Mode of Action:

<u>Ascending branch</u>

The stimulus reaches the body and is received by the specialized sensory receptors.

Afferent neurons, placed in the dermis and epidermis, receive this information from receptors, react and send it to the central nervous system as nerve impulses.

<u>Descending branch</u>

Interneurons in the CNS, process the information and send a motor response.

Efferent neurons carry the response from the CNS to the effector organs, which might be either a muscle or a gland.

Finally, the target tissue responds to the stimulus as a contraction -muscle-,or as hormones release -gland-.

A motor neuron is formed by a cellular body, dendrites (cytoplasmic extensions that receive stimuli from other cells), and a long axon that is capable of conducting the electrochemical signals.

The axon brunches out into several extensions when it approaches the muscle.

At the end of each brunch, the axon is inserted in the muscle fiber surface, composing neuromuscular join.

This is the last part of the NS involved in the process before the muscle contracts.

After a sensory nerve signal is processed by interneurons in the integration center, the signal goes to the motor neuron, and from there to the effector.

The corrct answer is motorneuron.

You can learn more about the reflex arc at

brainly.com/question/894334

#SPJ1

3 0

1 year ago