All categories

2 years ago

Write a main idea paragraph about cells in general (5 sentences) I'll mark brainliest !

1 answer:

4 0

Biologists recognize five levels of cell organization. The lowest and simplest is the cellular level. Organisms here are either unicellular organisms, like protozoa, or colonial organisms. Colonial organisms are composed of single-celled individuals that stay together to sustain the life of the whole colony. Next on the scale of complexity is the level occupied by tissue. A tissue is a group of similar cells that perform a similar activity. Tissues that are organized around a common function together make up an organ, the third level of complexity. The fourth level of organization is the system, formed by a group of organs that together perform a specific bodily process. The fifth and highest level is the organism level, in which body systems work together in a structure capable of independent life.

You might be interested in

A group of environmentalists were discussing the benefits and drawbacks associated with using fossil fuels. Which argument best

shepuryov [24]

Answer:

The correct answer is A. Fossil fuels are cheaper than alternative forms of energy

Explanation:

Fossil fuels are made from organic matter of dead animals and mainly plants who were buried in the soil over hundred and thousand of years. We use fossil fuels because they are the best source to provide energy in the current time.

Fossil fuels are easily available and are present in very large amount which is the main reason for it to be cheaper. Fossil fuels like coal, petroleum or natural gas are more cheaper and efficient than alternative forms of energy like solar or wind energy.

But in future these fossil fuel will not be there and alternative forms of energy will become the primary and cheaper source of fuel.

5 0

3 years ago

Read 2 more answers

You are a botanist looking at the plant color in a new breed of Snapdragon. The two parent plants are Blue and Green and when yo

irakobra [83]

Answer:

Incomplete dominance is the inheritance pattern where the dominant allele did not mask the recessive allele completely and form a mix of both alleles. Here the inheritance is the incomplete inheritance. The ratio of F2 generation is 1:2:1.

Given:

R1R1 = 42

R2R2 = 39

R1R2 = 86

Total R1 alleles = 2*42+86 = 170

Total R2 alleles = 2*39+86 = 164

Total alleles = 334

Frequency of allele R1 = 170/334 = 0.51

Frequency of allele R2 = 164 / 334 = 0.49

Expected number of each phenotype:

Total population = 167

Blue = R1R1 = 0.51 * 0.51 * 167 = 43.44

Green = R2R2 = 0.49 * 0.49 * 167 = 40.10

Cyan = 2*R1*R2 = 2*0.51*0.49*167 = 83.46

Phenotype Observed(O) Expected (E) O-E (O-E)2 (O-E)2/E

Blue 42 43.44 -1.44 2.0736 0.0477

cyan 86 83.46 2.54 6.4516 0.0773

green 39 40.1 -1.1 1.2100 0.0302

Total 167 167 0.1552

Chi-square value = 0.155

Degrees of freedom = no. of phenotypes – 1

Df = 3-1 = 2

Critical value = 5.99

Chi-square value of 0.155 is less than the critical value of 5.99. So we accept the null hypothesis.

4 0

2 years ago

In deer mice, red eyes (r) is recessive to normal black eyes (R). Two mice with black eyes are crossed. They produce two offspri

12345 [234]

Because the red eyes are recessive to black eyes, the parents could be heterozygous. Recessive alleles only show if two recessive alleles are combined. Thus the offsprings phenotypes of the gene would be C. Rr and rr

8 0

2 years ago

How are some nations working to protect the earth's resources?

ioda

The answers are - creating laws to regulate the amount of pollution, -planting trees at the same rate they are being cut down, -teaching citizens about water consumption and waste.

All three of these measures help people understand the importance of sustainability as well as ensure that on a governmental level, the required steps are being taken that a nation will witness increased dependance on renewable energy sources and not fossil ones.

5 0

2 years ago

If a parent cell has 18 chromosomes, each daughter cell following meiosis II will have ________ chromosomes

bogdanovich [222]

Meiosis II will have $18$ chromosomes.

Meiosis:

Somatic cells divide during meiosis, a process in which the genetic makeup or quantity of chromosomes in the daughter cells is maintained.
In sexually reproducing organisms, a kind of cell division known as meiosis results in a decrease in the number of chromosomes in gametes (the sex cells, or egg and sperm). Human body cells, also known as somatic cells, have two sets of chromosomes and are diploid (one from each parent).
A single cell splits twice during the meiosis process, resulting in four cells with half the original genetic material. These cells—sperm in men and eggs in women—are our sex cells.

Learn more about meiosis here brainly.com/question/16249478

#SPJ4

7 0

1 year ago

Write a main idea paragraph about cells in general (5 sentences) I'll mark brainliest ! ​

Write a main idea paragraph about cells in general (5 sentences) I'll mark brainliest !