Describe the accepted theory during redi's time explaining the origin of the flies

1 answer:

3 0

During the time of Fransesco Redi, the 17th century, people believed in spontaneous generation of organisms from non-living thing, or abiogenesis.

The people of that time believed that living things, such as flies, arise from non-living things spontaneously. Fransesco Redi challenged this belief and set up the famous fruit fly experiment to demonstrate that life comes from pre-existing life, and not from non-living things such as meat and fruit.

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Which box depicts the tissue level of organization?

Effectus [21]

Levels of OrganizationIn unicellular (single-celled) organisms, the single cell performs all life functions. It functions independently. However, multicellular (many celled) organisms have various levels of organization within them. Individual cells may perform specific functions and also work together for the good of the entire organism. The cells become dependent on one another.Multicellular organisms have the following 5 levels of organization ranging from simplest to most complex:LEVEL 1 - CellsAre the basic unit of structure and function in living things.
May serve a specific function within the organismExamples- blood cells, nerve cells, bone cells, etc.LEVEL 2 - TissuesMade up of cells that are similar in structure and function and which work together to perform a specific activity
Examples - blood, nervous, bone, etc. Humans have 4 basic tissues: connective, epithelial, muscle, and nerve.LEVEL 3 - OrgansMade up of tissues that work together to perform a specific activityExamples - heart, brain, skin, etc.LEVEL4 - Organ Systems
Groups of two or more tissues that work together to perform a specific function for the organism.
Examples - circulatory system, nervous system, skeletal system, etc.
The Human body has 11 organ systems - circulatory, digestive, endocrine, excretory (urinary), immune(lymphatic), integumentary, muscular, nervous, reproductive, respiratory, and skeletal.
LEVEL 5 - Organisms

Entire living things that can carry out all basic life processes. Meaning they can take in materials, release energy from food, release wastes, grow, respond to the environment, and reproduce.
Usually made up of organ systems, but an organism may be made up of only one cell such as bacteria or protist.
Examples - bacteria, amoeba, mushroom, sunflower, human

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1 year ago

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A student formulated a hypothesis that water-soluble pollutants damage living organisms by increasing the permeability of cellul

xenn [34]

Answer:

The absorbance of 460nm light by the treatment solutions was the test performed by the student.

Explanation:

Cell membranes are phospholipid bilayers which are mostly displayed by the 'fluid mosaic model' which consists of proteins, carbohydrate polymers and glycoproteins making them able to move around quite freely amongst the phospholipids. A normal membrane permeability test involves investigating the effects of a named variable on the membrane permeability of any vegetable such as beetroot whose biological name is Beta Vulgaris. The variables to investigate are the influence of solvents and temperature because these factors can change the fluidity of the membrane. Beetroot is an important item for this test because of the distinctive betalains pigment that its stem tuber contains. These pigments form an important signal indicating membrane fluidity as they are usually contained in the vacuole of intact beetroot cells. An instant or constant increase in membrane fluidity will cause the pigment to spill out of the cell, and the amount of pigment can be measured simply by using a colorimeter.

The above description is performed under the test of The absorbance of 460nm light by the treatment solutions.

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Tidal fluctuations can affect the abundance of aquatic organisms in an ocean environment. which tide would have the *least* impa

Alisiya [41]

The best and most correct answer among the choices provided by the question is the third choice "neap"

Neap tides occur twice a month when the sun and moon are at right angles to the Earth. When this is the case, their total gravitational pull on the Earth's water is weakened because it comes from two different directions.

I hope my answer has come to your help. God bless and have a nice day ahead!

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1 year ago

There are at least two things related to barb's medical history that may be of interest to a doctor. what are those two things?

Triss [41]

The two things that the doctor may be of interest to barb’s medical history is her hip replacement procedure and her asthma. Although her hip replacement procedure was done long ago but she should still be cautious on her movements especially carrying her grandchildren or bringing heavy load. Moreover, her asthma attack must also be carefully monitored particularly her labored breathing pattern.

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2 years ago

A botanist created a linear model to predict plant height from soil acidity (pH level) for a certain type of plant. The slope of

Nutka1998 [239]

Answer:

0.625

Explanation:

The slope (m) of a linear regression line is ...

$m=r_{xy}\cdot\dfrac{s_y}{s_x}$

Then we have ...

$2.5=r_{xy}\cdot\dfrac{4}{1}\\\\\dfrac{2.5}{4}=r_{xy}=0.625$

The value of the correlation coefficient is 0.625.

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1 year ago