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zhuklara [117]
3 years ago
6

The oldest known fossils Group of answer choices all of the choices. are microscopic. are that of prokaryotes. date back 2.5 bil

lion years ago.
Biology
2 answers:
agasfer [191]3 years ago
8 0

Answer:

Cyanobacteria from Archaean rocks of western Australia, dated 3.5 billion years old. Cyanobacteria are among the easiest microfossils to recognize

Explanation:

Sauron [17]3 years ago
8 0
What exactly is the question
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the efficiency of aerobic metabolism is greater than that of anaerobic metabolism even though much more energy is released in ae
Nitella [24]

Compared to anaerobic metabolism, aerobic metabolism retains a lot additional energy in the manner of ATP.

<h3>What is the straightforward meaning of metabolism?</h3>

the alterations in an organism's or a cell's chemistry. These modifications generate the ingredients and energy that cells and organisms require to develop, procreate, and maintain health.

<h3>Does weight change with metabolism?</h3>

You will consume more calories both at rest and when you are active if overall metabolism is "strong" (or quick). You'll need to consume more calories to maintaining your weight if you have a strong metabolism. That is one of the reasons why some people are able to consume more than before without putting on weight.

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7 0
1 year ago
HELP!!!!!!!!!
tino4ka555 [31]

Correct answer: C). Cells are the basic building blocks of life but do not constitute life itself

Cell theory in a biology is a scientific theory, which is universally accepted and it states that all living organism are made up of one or more cells, cell is the building block of living thing, it also states that all cell arise from ore existing cells.

The cell theory is collection of ideas and conclusion, which were given after many years of continuous research and experiment of many scientist, which tells about the cell and how it operates.



5 0
3 years ago
Read 2 more answers
Which is the best example of a hypothesis leading to new experimental
Serjik [45]

try it first then do it over again until it works

3 0
3 years ago
Using at least 3 steps explain how to make a wet mount slide with an Elodea plant​
Masja [62]
Step One - Obtain a clean microscope slide.

Step Two - Place a drop of liquid on the slide. This is the “wet” part of the wet mount. The liquid used depends on the type of cell being viewed:
If examining a plant cell, tap water can be used.
If examining an animal cell, physiological saline (or contact lens solution) must be used, because if plain water is used, the cell will explode from osmotic pressure. Unlike plant cells and bacteria, animal cells have no cell wall to structurally support them.

Step Three - Obtain the specimen to be used. Some introductory biology classics for viewing include:
Skin of an onion bulb: In order to view the cells, a very thin layer of skin must be obtained. Take a single layer of onion and bend it towards the shiny side. After it snaps, pull gently, and a transparent layer of skin, similar to Scotch tape, will appear.
Elodea leaf: Elodea leaves are two cell layers thick. The cells in one layer are smaller than the cells in the other, so elodea leaves can be used to better understand a microscope's depth of field.
Cheek cells: Human epithelial cells can be obtained by gently rubbing a toothpick on the inside of the mouth, and then swirling the toothpick in the physiological saline on the slide.
Pond water: Obtaining some water from a pond makes wet mount preparation a breeze, since the water and the specimens are both included.
Hope this helps
8 0
3 years ago
A test cross can be used to _____.
gtnhenbr [62]

Answer: - Predict an unknown genotype of a purebred dominant plant.

Explanation:

The genetic make up of the organism is called as the genotype. It describes the form of genes or allelic forms present in the organism. A test cross is used to determine the genotype of the organism. In this cross the organism with the unknown genotype is done with that of the organism with the known genotype. It also determines the fact that the organism is either homozygous dominant or hetrozygous.

On the basis of the above description, Predict an unknown genotype of a purebred dominant plant.

8 0
3 years ago
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