Cyanobacteria have been aorund for 3.5 billion years or more. They can live in aggregations of cells called mats. When did cells of cyanobacteria first start showing evidence of differentiation (i.e. cells becoming different in form and function)?

A.

0.5 billion

B.

1 billion

C.

2 billion

D.

3 billion

E.

When Muhammed Ali beat Sonny Liston in 1965 to become heavyweight boxing champion of the world

Answers

Answer 1

Answer:

The correct answer is - option C. 2 billion.

Explanation:

Cyanobacteria or BGA are microscopic organisms that live in water bodies normally and make their own food. These are unicellular organisms that have been around 3 and a half million years and consider as the first photosynthetic organisms responsible for the availability of oxygen on earth. These cells are also considered as the cell that evolved in the eukaryotic cells by differentiation around 2 billion years ago. The aggregated form of the cells are known as the mats.


Related Questions

Native bumblebees live in grasslands and consume pollen and nectar from flowers. The bumblebees carry pollen from one plant to another. The bees pollinate most but not all the flowers in their habitat. Amphibians and insects, such as dragonflies, eat bumblebees.

A local resident sets up honeybee hives in the habitat of the bumblebees. Honeybees are a nonnative species that eat the same food as the bumblebees. Food now becomes a limiting factor for the bumblebees.

How might the populations of flowers, bumblebees, and dragonflies change after the introduction of honeybees to the ecosystem?
Group of answer choices

Flowers will increase, bumblebees will decrease, and dragonflies will decrease in population size.

Flowers will decrease, bumblebees will decrease, and dragonflies will decrease in population size.

Flowers will increase, bumblebees will increase, and dragonflies will increase in population size.

Flowers will decrease, bumblebees will decrease, and dragonflies will increase in population size

Answers

Answer:

i think it's A. why? because bumblebees pollinate flowers making more grow but dragonflies EAT the bees so they'll decrease.

what does balance diet consist of?

please help!!​

Answers

Answer:

Fruits, vegetables, lean meat, limiting saturated fats, eating controlled portions.

Explanation:

Fruits and vegetables are extremely important for a balanced diet. Same with lean meat.

These provide good amounts of fiber and protein.

Eating less saturated fats are good too. Same with eating controlled portions so you do not over or under eat.

Hope this is correct, good luck with your studies.

Answer:

A balanced diet contains foods from the following groups: fruits, vegetables, dairy, grains, and protein.

I need help, because it is late

Answers

Answer:

1

Explanation:

when do birds use their teeth????

Answers

Answer:

to eat worms

Explanation:

Answer:

Birds do not have teeth, however...

Explanation:

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According to The Cornell Lab, "Birds do not have teeth, however, they may have ridges on their bills that help them grip food, but this does not count as teeth. So what about birds that have “tooth” in their name, like Double-toothed Kite? Some birds of prey have a sharp ridge or “tomial tooth” on the bill that they use to bite into their prey when subduing it. But these modifications to the bill surface are not considered the same thing as individualized teeth seen in other animals."

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Hope this helps! <3

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Look at the punnett square above. What would be the percentage of short plants if two heterozygous plants (Tt) as seen above where to have offspring?
A. 25%
B. 50%
C. 75%
D. 100%

Answers

B
Because 25+25 is 50

Which is an example of a decomposer?
A a hawk
B a mouse
C a flower
D a mushroom

Answers

D a mushroom is the right answer fungi are types of decomposers and mushrooms are fungi

Answer:

D, a mushroom

Explanation:

i had the same question and got it right ;)

When a person eats, the brain signals the stomach to start breaking down the food. Which two 1 point
systems are involved in this process?*
Circulatory and respiratory
Nervous and digestive
Digestive and excretory
Muscular and digestive

Answers

Answer:

Digestive and excretory I think

Explanation:

What are the products for a single pyruvate molecule in the Krebs Cycle?

Answers

Answer:

In the conversion of pyruvate to acetyl CoA, each pyruvate molecule loses one carbon atom with the release of carbon dioxide. During the breakdown of pyruvate, electrons are transferred to NAD+ to produce NADH, which will be used by the cell to produce ATP.

Answer:

In the conversion of pyruvate to acetyl CoA, each pyruvate molecule loses one carbon atom with the release of carbon dioxide. During the breakdown of pyruvate, electrons are transferred to NAD+ to produce NADH, which will be used by the cell to produce ATP.

Found this on google, but I hope it helps :)

A tropical wet climate exists in the United States only in
1 point
a. Oregon and Washington,
b. Florida.
c. Hawaii.
O d. California.

Answers

Answer:

C. Hawaii

Explanation:

Question: A tropical wet climate exists in the United States only in

a. Oregon and Washington,

b. Florida.

c. Hawaii.

d. California.

The answer you are looking for is C. Hawaii

Is a vacuole prokaryotic or eukaryotic

Answers

Answer:

what

Explanation:

It’s presents in both

Why am I so saddened

Answers

Answer:

stress

Explanation:

u are studying some things that are keeping u sad

and if u don't open up ur gonna suffer from anxiety

Answer:

Try meditation it helps

Explanation:

School makes everyone sad dw.

One strand of DNA contains 200 nucleotides of adenine, 300 nucleotides of cytosine, 150 nucleotides of thymine, and 100 nucleotides of guanine. How many amino acids will be in a protein encoded in this region of a DNA molecule: ........
PLEASE HELP!!!!!

Answers

Answer:

because there are only 20 different amino acid but 64 possible condoms most amino acid are indicated by more than one condon.

What is the answer here?

Answers

Answer:

This is to complex

Explanation:

This also doesn't really make sense LOL

What cellular function is negatively impacted by an increase in cell size?

Answers

Answer:  c

Explanation:

which statement describes a possible effect of climate change

Answers

Answer:

Where is the question??

Explanation:

Add an attachment

hello pls help can you tell me if I got these right ​

Answers

Answer:

yes you got them right gj :)

Explanation:

yes, those should be the right answer

What is the purpose of a crime scene barrier?

Answers

Answer:

The purpose of a crime scene barrier is to keep the public well back from any crime scene

Explanation:

1. the crime scene area or location is secured, and: a. yellow barrier tape is used to create an outer perimeter and if necessary, a staging or mobilization area when determined appropriate.

You're welcome Have a nice day ✨

the question is in the photo

Answers

which question it’s 2 of them?

11. Peripheral membranes are located

Answers

Answer:free point

Explanation:

The answer for the question is free point

The tRNA lines the amino acids up to form...
1.a Congo line
2.a protein
3.a compact molecule
4.an alloy​

Answers

2, they line up to form a polypeptide chain this forms part of a protein molecule.

Which of the following is true of enzymes

Answers

Answer:

Explanation:

A. Enzymes increase the rate of chemical reaction by lowering activation energy barriers. Enzymes are biological catalysts. Like all catalysts, they function by lowering the activation energy of a chemical reaction, which speeds the rate of the reaction.

I agree with the first answer it really gives a good definition.

Question 3
Contaminants and pollutants cannot enter groundwater
O True
O False

Answers

Answer:

false

Explanation:

groundwater groundwater has an abundance of contaminants and pollutants


A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass
number is

Answers

Answer:

The mass number is 56

Explanation:

You just add the number of protons and neutrons to find the mass number of a atom.

The answer is 56 hope this helps

CELLULAR RESPIRATION

What happens to the energy after cellular respiration? What happens to the carbon dioxide and water?

Answers

Answer:

Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP. Carbon dioxide dissolves in water and slowly reacts with water to produce carbonic acid.

Explanation:

A good example of a natural phenomena causing geographical isolation is the
-Mississippi River
-Sahara Desert
-Grand Canyon
-Great Pyramid​

Answers

Answer:A

Explanation:because

Which product of respiration is considered waste material and leaves the alveoli?
O oxygen
O water
O carbon dioxide
O carbon monoxide

Answers

Answer:

In our respiratory system, carbon dioxide is the waste material that we expel when we breathe out. The answer is C, Carbon Dioxide

I hope you have a great day!

The waste product of respiration is

C. Carbon dioxide

The oxygen consumed via stomata is used up by cells.

Respiration in leaves:

Oxygen from the air enters a leaf through stomata and reaches all the cells by the process of diffusion. This oxygen is used in respiration in cells of the leaf. The carbon dioxide produced during diffuses out from the leaf into the air through same stomata. The oxygen used by cells in the leaves to disintegrate glucose into water and carbon dioxide.

Thus, option C is correct.

Find more information about Respiration here:

brainly.com/question/18169685

"DNA replication is not considered a semi-conservative process."
True or false

Answers

Answer:

False

Explanation:

Is the mesosphere temperature high or low and what is the temperature

Answers

Temperature decreases with height throughout the mesosphere. The coldest temperatures in Earth's atmosphere, about -90° C (-130° F)

do all DNA from organisms look the same?

Answers

Answer:

no they do not

Explanation:

HELP ME WITH THIS PLEASE!!!!!!!

Answers

Answer:

c

Explanation:

Answer:

Primary consumer.

Explanation:

Ok, so a producer is stuff like grass. Then you've got decomposers, which are maggots and vultures and animals like that (ew). Our primary consumer is the bird, then you've got the snake which eats the bird, and then there's the alpha predator, the hawk, which can eat both the snake and the bird. We call the alpha predator the tertiary consumer.

Do you get it now?

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