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Sergio039 [100]
3 years ago
14

Every cell is surrounded by a thin membrane. What is the main function of this cell membrane?

Biology
2 answers:
Marina CMI [18]3 years ago
6 0
To prevent anything from going in or going out of the cell
Blizzard [7]3 years ago
3 0
To protect the cell from the invasions of bacteria and viruses. 
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Question 1 (5 points)
lora16 [44]

Answer:

Electricity, gravity of earth and structure of atom provide evidence.

Explanation:

The investigation of electricity, gravity of earth and structure of atom helps the student to understand that without touching, one object apply force on another object. In electric current, we can see the property of magnetism due to which it attract and repel objects while in gravity of earth, the earth apply gravitational force to attract objects towards itself. in the structure of atom, proton present in the nucleus which attract the electron present in the shells.

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3 years ago
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Initial number of finches
Ray Of Light [21]

Answer:

1000

Explanation:

The average beak depth will Initial average depth: 9.95 decrease because the finches with small Initial range of beak depths: 7 beaks are best suited to finding food in Abundant rainfall.

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3 years ago
Which one of the following statements is true of enzyme catalysts? A) Their catalytic activity is independent of pH. B) They are
muminat

Answer:

D) They can increase the reaction rate for a given reaction by a thousand-fold or more.

Explanation:

Enzymes are like catalysts with the only difference that they are bio-molecules. Biochemical/chemical reactions are slow because of 'transition state barriers' which require a lot of energy to overcome so enzymes rather than overcoming transition state barrier provide an alternate pathway for biochemical reactions which require comparatively less energy. Thus presence of an enzyme leads to an increase in reaction rate because alternate pathway which requires less energy makes the rate of chemical reaction rapid by a thousand-fold or more.

5 0
3 years ago
You have an organism with the following characteristics - it grows as single cells. It is heterotrophic and has a cell wall that
prisoha [69]

Answer:

Halophiles of Archaea domain

Explanation:

The Archaea are characterized as single cells. They can exihibit both the autotrophic and heterotrophic mode of nutrition. Their cell walls do not contain peptidoglycans but contain pseudo-peptidoglycans etc.  Their environmental conditions also need to be known to give a definitive identification and also are their organelles membrane bound.

5 0
3 years ago
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Six layers of gray matter on top of a layer of white matter would describe: the limbic cortex. the basal ganglia. the neocortex
KiRa [710]

Answer:

the neocoretex

Explanation:

from wikipedia "The neocortex, also called the neopallium, isocortex, or the six-layered cortex, is a set of layers of the mammalian cerebral cortex involved in higher-order brain functions such as sensory perception, cognition, generation of motor commands,[1] spatial reasoning and language.[2] The neocortex is further subdivided into the true isocortex and the proisocortex."

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2 years ago
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