Answers
Answer:
They perform photosynthesis, releasing oxygen into the atmosphere as a by-product.
Explanation:
Around the time that cyanobacteria appear around 3.2 billion years ago, the oxygen levels rise sharply.
Cyanobacteria are photosynthetic organisms. They possess the photosynthetic pigment chlorophyll, meaning they can trap light energy and use it to power chemical reactions to synthesise glucose. They convert carbon dioxide and water into sugar, releasing oxygen into the atmosphere as a byproduct. This causes oxygen levels to rise.
Answer:
Cyanobacteria are microbes that live primarily in seawater. They are believed to have been the first organisms on Earth to perform oxygenic photosynthesis. In this process, they produce organic carbon, the building blocks of life's molecules, and release oxygen gas (O2).As oxygen photosynthesis starts,that's when the first O2 producing of cyanobacteria occurs.The graph reaches a peak at Cambrian explosion.
Related Questions
When substances are constantly moving
back and forth across a cell membrane, the
cell is said to be in a state of?
Answers
The diffusion of water molecules a secectively permeable membrane.
What is Diffusion?The net passive movement of molecules or particles from areas of higher concentration to areas of lower concentration is known as diffusion. There needs to be a concentration gradient for diffusion to happen.
The dissimilarity in the quantity of solutes, particles, or molecules between the two locations will drive them to travel between the two regions.
The gradient created by the uneven particle concentration between two fluids will cause the particles to move in order to balance the discrepancy in concentrations. However, solutes do not migrate in a single direction during the diffusion process.
Therefore, The diffusion of water molecules a selectively permeable membrane.
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Explain the significance of plant collections in the 18th century.
Answers
Explanation:
Humans developed the first planned plant hybrids early in the 18th century, during this period of intense interest in botany and plant anatomy. Collecting plants became a popular pastime for the wealthy and well educated
According to blood flow patterns, the basal ganglia and cerebellum appear to be where which type of memory is stored
Answers
Answer:
The options are
A. Procedural
B. Eidetic
C. Skill
D. Declarative
The answer is D. Declarative
According to blood flow patterns, the basal ganglia and cerebellum appear to be in and stored in the type of memory called Declarative
How do I find proof of God
Answers
Answer:
you can't.
Explanation:
You can observe evidence there may be a God, but there will always be a counter argument showing that God isn't real. Basically God and biology are ideas both of which may be seen as valid. in other words it depends on who you ask
Answer:
By praying.
Explanation:
What is the layer of myelin that surrounds an axon called?
Group of answer choices
1. Node of Ranvier
2. Perichondrium
3. Perimysium
4. Myelin sheath
5. Periosteum
Answers
I think the answer is Nodes of Ranvier but I’m not sure. I hope this helped <3
Where does gravity come from? How does an object's mass shape the fabric of
spacetime?
Answers
Answer:
Earth's gravity comes from all its mass. All its mass makes a combined gravitational pull on all the mass in your body.
Every object in the universe pulls on the space around it, drawing the fabric of space-time toward its center.
Answer:
gravity comes from all its mass. All its mass makes a combined gravitational pull on all the mass in your body. That's what gives you weight.
Every object in the universe pulls on the space around it, drawing the fabric of space-time toward its center. The more massive the object, the more it pulls. ... The physicist John Wheeler captured these odd notions
DNA replication results in two DNA molecules,
Answers
each with one new strand and one original strands.
Hope this helps!
HELPP PLEASE!!
What is a subjective claim?
A claim based in personal opinion.
A claim that covers two subjects or topics.
A claim based on verifiable fact.
Answers
Answer:
A
Explanation:
its a expression of belief, opinion, or personal preference
What are the consequences of uncontrolled sexuality?
Answers
The carbon atom I'm building has 6 electrons these electrons are found in levels the first level of the carbon has?
Answers
During cellular respiration, the chemical energy from food is transferred into which of the following molecules that can be used as an energy source by enzyme throughout the cell?
A
Ribonucleic acid (RNA)
B
Adenosine triphosphate (ATP)
C
Deoxyribonucleic acid (DNA
D
Triglycerides
Answers
Answer:
The first stage of cellular respiration, called glycolysis, takes place in the cytoplasm. In this step, enzymes split a molecule of glucose into two molecules of pyruvate, which releases energy that is transferred to ATP. The organelle called a mitochondrion is the site of the other two stages of cellular respiration
4) Cell C suddenly lost all its dynamin proteins. Which of the following will most likely happen
right
away as a result of this loss?
A) Transcription factor X will no longer be able to go to the nucleus
B) A vesicle bud will no longer be pinched off from a membrane
C) A vesicle will no longer be tethered to a target membrane
D) A protein will no longer be targeted to the mitochondrial matrix
E) Two of the above
Answers
Answer:
B) A vesicle bud will no longer be pinched off from a membrane
Explanation:
Dynamin is a protein responsible for endocytosis, the process where the cell takes substances in from outside the cell through a system of vesicles. At the edge of the cell, the membrane pinches in to form a vesicle, which buds off from the membrane and enters the cell.
The step of this process that dynamin is involved in is in cleaving newly formed vesicles from the membrane. Without it, a vesicle bud will no longer be pinched off from a membrane
What is the highest possible temperature?
Answers
The highest possible know temperature is 142 noillion kelvins
What would happen to a sample of your red blood cells if they were placed in
a hyptonic solution?
Answers
hypertonic: the red blood cell will shrink and could possibly die if being placed in a hypertonic solution
hypotonic: if it’s being places in a hypotonic solution, the red blood cell will swell
Meiosis produces which type of cells?
O Haploid somatic cells
Diploid somatic cells
Haploid gametes
Diploid gametes
Answers
Answer:
Explanation:
Haploid somatic cells
Answer:
Haploid because during meiosis one cell divides twice to for four daughter cells.
Explanation:
In which phases is chromatin condensed?
Answers
Answer:
In stage 2
Explanation:
During interphase (1), chromatin is in its least condensed state and appears loosely distributed throughout the nucleus. Chromatin condensation begins during prophase (2) and chromosomes become visible. Chromosomes remain condensed throughout the various stages of mitosis (2-5).
4) The taxonomy of life on earth defines that humans and bats are both classified as: A) Animalia B) Chordata C) Mammalia D) All of these
Answers
Answer:
D - all of these
Explanation:
They are both mammals
Bats are classified in:
Kingdom: Animalia Phylum: Chordata Class: MammaliaHumans are classified in:
Kingdom: Animalia Phylum: Chordata Class: MammaliaTherefore, the answer is D.
If all of your cells have the same DNA, how is it possible for one of
stem cells to become a skin cell and another of your stems cells to
become a bone cell?
Answers
Answer: daddy chill and yes they are
Explanation:
what molecule is this?
Answers
Answer: Cholesterol
Explanation:
Hope this helps
Lateralization refers to the
a. number of neurons produced during prenatal development.
b. organizational structure of the peripheral nervous system.
c. specialization of the two hemispheres of the cerebral cortex.
d. plasticity of the spinal cord.
Answers
Based on what you have learned in this activity, will you share the link to that article on
brainpower? Why or why not? What should you tell your friend who originally shared the link
about the article? The next time that you run across a link on social media, what steps will
you take to evaluate it before clicking "share"?
I
Submit
Answers
Answer:
b
Explanation:
yes
When pushing off the wall doing breaststroke, swimmers must do a/an __________pull?
Answers
Answer:
i started swimming this year its pretty fun : ) I believe the answer to your question would be a pull down/breakstroke pull
Explanation:
I hope this helps your welcome..
Pull-downs are essential to a fast breaststroke race. Without a good pull-down, you have a major disadvantage. You don’t want to start the race behind your opponents! If you’re looking to improve your breaststroke time, mastering the pull-down is a great way to do it. This guide is filled with easy steps to strengthen your race through a powerful pull-down.
What is the protozoan and who is the first to observe one?
Answers
Answer:
Protozoa is an informal term for a group of single-celled eukaryotes, either free-living or parasitic, which feed on organic matter such as other microorganisms or organic tissues and debris. Anton van Leeuwenhoek was the first person to see protozoa, using microscopes he constructed with simple lenses. Between 1674 and 1716, he described, in addition to free-living protozoa, several parasitic species from animals, and Giardia lamblia from his own stools.
2. What types of molecules are used for energy?
3. What is most commonly used?
(U.S.)
Answers
Answer:
Explanation:
Biological molecules The food we eat – our diet – is made up of different biological molecules which give us energy and contain chemicals we need to grow and repair ourselves and help our cells function in our body.
What is a map? How are maps used, and what is their purpose?
Answers
Answer:
Reference maps show the location of geographic boundaries, physical features of Earth, or cultural features such as places, cities, and roads.
Explanation:
Answer:
It is a representation of a place in which the relationship toward time and space is perceived. The purpose of maps are to provide visual representations of the physical features of the Earth to teach and guide. Maps are used to navigate from one place to another, to know the location of an area or region, and to measure distances from certain locations.
Explanation:
Select the correct answer.
Jayden is taking a test. He has to write why scientists support the theory that life began near hydrothermal vents in the ocean. Which point should he include in his answer?
A.
Hydrothermal vents were closest to ocean surface, and therefore could receive oxygen.
B.
Oceans were dry and only had water near the hydrothermal vents in the earlier ages.
C.
Even today, all life forms are first born near hydrothermal vents and they later migrate to land.
D.
Fossils of archeabacteria, which are early common ancestors, were found near hydrothermal vents.
Answers
Answer:
The answer is; D
Archaebacteria are early life forms on earth. They utilized the process of chemosynthesis to make organic molecules from inorganic molecules and for energy. The word archae means ‘ancient’ life forms. These single-celled organisms evolved around sulfur-rich environments of the hydrothermal vents.
Answer:
D
Explanation:
How can you reduce the amount of waste you send to landfills?
A. Recycle packaging that comes with purchases.
B. Place broken electronics in the garbage can.
C. Use disposable dishes and cutlery at parties.
D. Bag yard waste each time you mow or prune.
Answers
Answer:
the answer is C. Recycle packaging that comes with purchases.
Explanation:
You can reduce the amount of waste you send to landfills by recycling the packaging that comes with purchases.
What do you mean by Landfills?Landfills may be defined as a system of garbage and trash disposal in which waste is buried between layers of earth.
The materials of packaging compounds are non-biodegradable that can not be degraded. These materials are buried deep in the earth and cause pollution.
Therefore, you can reduce the amount of waste you send to landfills by recycling the packaging that comes with purchases.
To learn more about Waste products, refer to the link:
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-4. Which of the following correctly traces the path of air after it is inhaled?
A. epiglottis, trachea, bronchioles, alveoli
B. bronchioles, alveoli, epiglottis, trachea
C. epiglottis, bronchioles, alveoli, trachea
D. alveoli, epiglottis, trachea, bronchioles
Answers
Dr. Ron believes that there is one overall intelligence that applies across all tasks and situations. Dr. Ron supports the notion of
O emotional
O general
O multiple
O specific
Answers
General intelligence, commonly referred to as the “g factor,” is a wide mental capacity that affects how well on cognitive ability tests a person does. Thus, option B is correct.
What is general intelligence?It is possible to describe general intelligence as a construct made up of various cognitive skills. These skills enable people to learn new things and resolve issues.
Underlying specialized mental talents in domains like verbal, spatial, numerical, mechanical, and mechanical abilities is this general mental capacity.
It is hypothesized that general intelligence influences how well people perform on all cognitive tasks.
You can relate general intellect to athletic ability. A person may be an exceptional runner, but this does not automatically make them a great figure skater.
Therefore, Dr. Ron supports the notion of general intelligence.
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An atom has a mass number of 36 and an atomic number of 16, how many
neutrons does the atom have?
Answers
Answer:
36
Explanation:
Mass (36) - number (16) = 20 neutrons