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ivann1987 [24]
3 years ago
5

13. What causes a heartbeat?…………

Biology
2 answers:
s2008m [1.1K]3 years ago
4 0

Answer:

A

Explanation:

I think i remember that from heatlth.

brilliants [131]3 years ago
3 0

Answer:

A

Explanation:

Stretching of the atrium and ventricle muscles

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What types of organism uses and produces both oxygen and carbon dioxide?
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Plants use and produce both oxygen and carbon dioxide.
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3 years ago
Which of the following environmental justice policies would the Environmental Protection Agency be least interested in
NISA [10]

Answer: Your answer is indeed <u>A. Fair treatment.</u>

Hope this helps!

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2 years ago
A cytoprotective agent is also known as a(n) _____.
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It is also known as a rescue agent
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3 years ago
30 points will mark brainliest pls hurry
Lerok [7]

Answer:

Food refers to any nutritious substance whereas diet refers to the food eaten by organisms daily.

2,110 calories.

Explanation:

1. Food refers to any nutritious substance that an organisms eat in order to survive and maintain growth whereas diet refers to the sum of food that is consumed by an organism.

2. Malnutrition refers to a condition that occurs from eating a diet which does not supply a healthy amount of nutrients to our body whereas hunger refers to a feeling of discomfort that is caused by lack of food.

3. No, it is not possible to be over-nourished and under-nourished at the same time because a person can attain one condition at a time whether he can be over-nourished or under-nourished.

4. The three elements of food security are availability, access and consumption of food. Availability of food means having sufficient quantities of nutritive food available to a person, access means having sufficient resources to have access to the food and consumption means having taking sufficient amount of nutrients and the ability to absorb and use nutrients in the body.

5. 2,110 calories are taken by consuming 345g of carbohydrate, 80 g of protein, 45g of fat and 12g of alcohol.

4 0
3 years ago
Let p = purple flowers and p = white, and t = tall plants and t = dwarf. if the uppercase letters represent the dominant alleles
sesenic [268]

If the uppercase letters represent the dominant alleles, purple flowers and tall are the phenotype of a plant with the genotype Pptt.

A gene can exist in different forms across organisms. These different forms are known as alleles.

The subsequent combination of alleles that an individual possesses for a specific gene is their genotype.  

Examples of  genotype include:

  • Hair colour
  • Height
  • Shoe size
  • Eye colour

The sum of an organism’s observable characteristics is their phenotype. A key difference between phenotype and genotype is that, whilst genotype is inherited from an organism’s parents, the phenotype is not.

Whilst a phenotype is influenced the genotype, genotype does not equal phenotype. The phenotype is influenced by the genotype and factors including:

  • Epigenetic modifications
  • Environmental and lifestyle factors

Observing the phenotype is simple – we take a look at an organism’s outward features and characteristics, and form conclusions about them. Observing the genotype, however, is a little more complex.

Genotyping is the process by which differences in the genotype of an individual are analyzed using biological assays. The data obtained can then be compared against either a second individual’s sequence, or a database of sequences.

Learn more about genotype here : brainly.com/question/22117

#SPJ4

6 0
1 year ago
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