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Basile [38]
3 years ago
13

What is 1 through 4 because I don't understand it

Biology
1 answer:
horrorfan [7]3 years ago
8 0
The first one is a: mitosis produces two genetically identical daughter cells.

The second one is b: prophase

The third one is a: interphase

The fourth one is c: metaphase.

Mitosis is the process of body (somatic) cells splitting to form new body cells.
It contains 4 phases:
interphase, when the cell is between splits and the chromatin is bundled up.
prophase, when the chromatin doubles and condenses to chromasomes.
metaphase, when the chromasomes line up along the cell equator,
anaphase, where the double chromasomes split into separate groups,
telophase, when the groups form new nuclear envelopes and the cells split.
 
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One of the most consistent and best-documented effects of cigarette smoking during pregnancy is
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Answer;

Low birth weight.

One of the most consistent and best documented effects of cigarette smoking during pregnancy is low birth weight.

Explanation;

Smoking during pregnancy has various effects on the fetus, causing a baby to be born early or to have low birth weight which makes it more likely for the baby to get sick and stay in the hospital longer.

Additionally; smoking during and after pregnancy is a risk factor of Sudden Infant Death Syndrome.

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3 years ago
A man with normal vision and a colorblind woman have children together. We can expect that _________ of their sons and _________
MrMuchimi
The answer would be E because boys inherit the Y chromosome from the dad which in this case would have the color blind trait. Girls don’t get the y from the father to get the color blind trait not be color blind because girls have 2 (X) chromosomes. Hope this helps
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3 years ago
What is vegetative propagation
Delvig [45]
A form of asexual reproduction of a plant. Only 1 plant is involved and the offspring is the result of the 1 parent. It is genetically identical to the parent.
4 0
3 years ago
Which of the following reasons explains a possible advantage of using adult stem cells in therapeutic cloning rather than embryo
denis23 [38]
The answers are A and d
6 0
3 years ago
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
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