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Brut [27]
4 years ago
9

The first organisms to appear on Earth did not need?

Biology
2 answers:
lions [1.4K]4 years ago
5 0
D is the correct answer
CaHeK987 [17]4 years ago
3 0
D is the answer I think
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A women decided she prefers a girl, but only wants a healthy ‘normal’ girl. She has decided she will not carry a baby with abnor
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Answer:

A karyotype test looks at the size, shape, and number of your chromosomes. Chromosomes are the parts of your cells that contain your genes. Genes are parts of DNA passed down from your mother and father. They carry information that determines your unique traits, such as height and eye color.

People normally have 46 chromosomes, divided into 23 pairs, in each cell. One of each pair of chromosomes comes from your mother, and the other pair comes from your father.

If you have more or fewer chromosomes than 46, or if there is anything unusual about the size or shape of your chromosomes, it can mean you have a genetic disease. A karyotype test is often used to help find genetic defects in a developing baby.

Other names: genetic testing, chromosome testing, chromosome studies, cytogenetic analysis

Explanation:

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3 years ago
Carbon monoxide prevents
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oxygen from reaching your tissues and organs.

Explanation:

Carbon Monoxide is very dangerous to us and many other animals. It is a flamable gas that is bad for our blood cells. When we breath it in and it gets put into out blood, it cannot be used as a substitution for air, and you will suffocate.

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3 0
3 years ago
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Which of the following is a similarity between act utilitarianism and rule utilitarianism? a. Both theories advocate benefit for
vladimir2022 [97]

Answer:

<h2> d. Both theories have flaws associated with predicting the future.</h2>

Explanation:

Utilitarianism-  a) act utilitarianism, and b) rule  utilitarianism  

There are various  similarities  between rule and act utilitarianism and  various differences between rule and act utilitarianism. They shows different beliefs in various factors. In spit of differences they also show similarities.

There is also a similarity between act utilitarianism and rule utilitarianism, Both theories have flaws associated with predicting the future.

8 0
3 years ago
All of the following are conditions in which the mantle will melt and liquefy EXCEPT ____________________________. a significant
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A significant amount of pressure is removed from the rock
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In certain kinds of muscle cells, calcium ions are stored in ________. The rough er both smooth and rough er the cytoplasm the s
Nadusha1986 [10]

Answer;

-In the smooth ER

In certain kinds of muscle cells, calcium ions are stored in the smooth ER.

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-The smooth endoplasmic reticulum is the part of the endoplasmic reticulum (ER) which does not have ribosomes bound to it, thus not exhibiting the bumpy appearance shown by the rough endoplasmic reticulum.

-The smooth ER is important in the synthesis of lipids, such as cholesterol and phospholipids, which form all the membranes of the organism. In addition it is important for the synthesis and secretion of steroid hormones from cholesterol and other lipid precursors.

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3 years ago
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