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Korolek [52]
3 years ago
7

Why are organelles surrounded by membranes?

Biology
1 answer:
ehidna [41]3 years ago
7 0
Membranes control whats good or whats bad to get inside the cell, basically it allows good things to pass into the cell and bad things to stay out
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Which two body systems, when working together, give your body shape and allows you to move around?
Iteru [2.4K]

The answer is; the skeletal system and the nervous system

The skeletal system (muscle and bone) give you rigidity and enable your legs to support your weight. The muscles also act on the bone as a fulcrum allowing it possible for them to contract and make motion possible.

The nervous system   is important in the coordination of movement. The brain is the center for locomotor action. This ensures you are able to place one foot in front of the other in sequence and moving your arm in concert.  


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3 years ago
An artery carries _____ blood _____ the heart.
lianna [129]
I believe it's oxygenated or oxygen rich blood away from the heart.
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3 years ago
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How come one type of matter can be converted to a totally different one?
wariber [46]

Answer:

Explanation:

En física, la materia es todo aquello que se extiende en cierta región del espacio-tiempo, que posee energía y está sujeto a cambios en el tiempo y a interacciones con aparatos de medida. Se considera que es lo que forma la parte sensible de los objetos perceptibles o detectables por medios físicos.

Etimológicamente, proviene del latín materia, que significa «sustancia de la que están hechas las cosas» y que también alude a la «madera dura del interior de un árbol»;1​ la palabra está relacionada con māter («origen, fuente, madre»)2​ y se corresponde con el griego hyle3​ (de hylos: «bosque, madera, leña, material»)4​5​ que es un concepto aristotélico de la teoría filosófica del hilemorfismo.6​

El uso moderno del término va más allá de la noción clásica de sustancia, y los físicos denominan materia a cualquier entidad cuya presencia en una cierta región del espacio-tiempo conlleva que el tensor energía-impulso para dicha región es diferente de cero.

8 0
3 years ago
Factors that remain constant from experiment to experiment are the
alexandr402 [8]

Answer:

Factors that remain constant from experiment to experiment are the constants.

Explanation:

A constant in an experiment is also known as a <em>control variable</em>. It is the part of an experiment that must stay the same in order to validate the experiment. If the constant were to change, the results would be skewed and therefore false.

i.e. you want to test the rate of growth of lima bean plants in different types of lighting. You believe that a lima bean plant that grows in yellow will grow faster and stronger than a lima bean plant that grows in blue or red light.

In this experiment, the constant would be the lima bean plant. You cannot change the type of seed or else your experiment is invalidated. If you tried to use a sunflower seed in the blue lighting and a tomato seed in the red lighting, your results would be invalidated and skewed.

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3 years ago
Which structure is found in both plants and animal cells
Lemur [1.5K]

Answer: Animal cells and plant cells share the common components of a nucleus, cytoplasm, mitochondria and a cell membrane.

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