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alexdok [17]
3 years ago
10

In an experiment that tests how

Biology
1 answer:
Ber [7]3 years ago
3 0

Answer:

D.

Explanation:

The independent variable is the variable that goes unchanged by the others

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Two main ingredients in plant fertilizer are phosphorus and nitrogen. these elements are found in which classes of biomolecues?
masya89 [10]

<u>Nucleic Acid, and Protein</u> are the class of biomolecule which are the two main ingredients in plant fertilizer.

Biomolecules- A chemical substance that is present in living things is called a biomolecule. These consist mostly of substances with the chemical elements carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus. The building blocks of life, biomolecules serve crucial roles in all living things.

Fertilizer- Any product or material given to soil to encourage plant development is referred to as fertilizer. There are many different types of fertilizers, and the majority of them include potassium, phosphorus, and nitrogen (N) (K). In actuality, the package of fertilizers bought in supermarkets lists the N-P-K ratio.

To know more about the Biomolecule, click on the below link,

brainly.com/question/5560087

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6 0
2 years ago
Which statement is true? oceanic crust is denser than continental crust oceanic crust is less dense than continental crust ocean
vazorg [7]

Answer:

Oceanic crust is thinner and denser than continental crust.

5 0
3 years ago
You are running in a race.What is one feedback mechanism that happens as you increase exercise and muscle activity?
SpyIntel [72]

Answer: Heart Rate

Explanation:

When you are running in a race, one feedback mechanism that happens as you increase exercise and muscle activity is that, your heart rate also increases. Your heart rate increases because it needs to sustain the body's need of more energy to be supplied to the different parts of the body during an activity.

8 0
3 years ago
Which explanation below best describes why meiosis produces haploid cells?
Agata [3.3K]

Answer:

Egg and sperm cells have to have half the number of chromosomes as in  body cells so when they combine to form a zygote, the zygote is diploid  and has the correct number of chromosomes. This explanation describes why meiosis produces haploid cells.

Explanation:

Meiosis is a type of cell division in which four haploid cells are produced from a diploid parent cell having two copies of each chromosome, where the number of chromosomes in the parent cell is reduced to half by undergoing DNA replication and nuclear division. Diploid cell contains two copies of each chromosome, one inherited from mother and the other from father while haploid cell contains only one copy of each chromosome. Examples of diploid cells (somatic cells) are skin, blood, muscle cells etc. Eggs or ovum (female gametes) and sperm (male gametes) are haploid reproductive cells. If the total number of chromosomes in a diploid cell is represented as '2n', then the number of chromosomes in a haploid cell is 'n'.  During the fertilization process in an organism, the correct number of chromosomes is restored when the haploid male and female gamete combined to form a single diploid zygote, which is the first developmental stage of an organism.

7 0
3 years ago
7) Phospholipids are important in the structure of:
SVEN [57.7K]

Answer:

B

Explanation: They make up most of a cell membrane

4 0
4 years ago
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