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zubka84 [21]
3 years ago
12

Instead of using its own lungs, the fetus obtains oxygen and nutrients from the mother's blood.​ true or false

Biology
1 answer:
Reil [10]3 years ago
6 0
True it gets that through the blood vessels in the umbilical cord
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This type of membrane transport moves substances against the concentration gradient from an area of low concentration to an area
sashaice [31]

<u>Answer</u>:- Active transport

<u>Explanation</u>:-

There are two types of membrane transports

1. Passive transport - this type of transport occurs without the input of any energy and the molecules move along the concentration gradients that is from <em>high concetration to low concentration.</em>

2. Active transport- this type of transport takes place to move the molecules against the concentration gradient that is from <em>low concentration to high concentration.</em>

<em>The active transport is of two types:</em>

1. <em>Primary active transport-</em> in this type of transport <em>ATP</em> is used as an energy source to move the substances against the concentration gradient.

2.<em>Secondary active transport</em> - in this type of transport the gradient formed by the active transport is utilized and it involves the movement of 2 substances at a time aross the membrane. That is the movement of one molecule is coupled to another.


  • The membrane proteins that are associated with active transport are called as <em>carrier proteins</em>. These proteins have a binding site for the molecules that they transport. Once they bind to the specific molecules, a conformation change is induced and this leads to the transport of the molecule across the membrane.

So, the <em>active transport is basically responsible for utilizing the energy from ATP and carrier proteins to move the substances across the membrane against their concentration gradient i.e. from low concentration to high concentration.</em>

5 0
3 years ago
A species was added into a particular ecosystem to control the population of a prey species. This method of introducing a new sp
denpristay [2]
Biological augmentation, bioremediation , or reforestation are names for the method.
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Q1: mixes food with enzymes that break down food?​
Dmitry_Shevchenko [17]
It doesn’t break food down no
3 0
3 years ago
How can what you see can impact other human body systems?
anyanavicka [17]
What we see can send panic signals to our endocrine system and then have an effect on systems from there. and also if we see something we are scared of it can stop our breathing, make us scream, close our eyes and other things.
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

5 0
3 years ago
Anybody good at writing biology would be great with this!!!
ruslelena [56]

Answer/Explanation:

The replication of DNA is semi-conservative, as each new molecule of DNA inherits one of the parental strands each, and one new strand each. DNA is replicated using the enzyme DNA polymerase, which synthesises a new strand by adding nucleotides in a sequence through complementary base pairing with the template strand. This occurs before the mitosis stage of the cell cycle, where the cell divides. Before this cell division happens, the cell has to pass certain checkpoints controlled by enzymes which ensure environmental conditions are optimal for dividing, and that the new DNA is free from errors.

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3 years ago
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