What are the two main reactions in photosynthesis called?

Scientific consensus supports the idea that living organisms require oxygen. then, a scientist discovers a type of bacteria that

katovenus [111]

The conclusion needs to be backed up by more evidences only then scientists make a claim.

Finding one type of bacteria that can survive in an oxygen-free environment does not prove that many other organisms can as well. It is important to understand the biological processes that give organisms the traits that enable them to live in settings devoid of oxygen. More data from many groups of species are required to support the statement.

<h3>In what all conditions can bacteria thrive?</h3>

Although bacteria can survive at higher and lower temperatures than humans, they thrive in an environment that is warm, wet, protein-rich, and pH neutral or slightly acidic. However, there are several exceptions. While certain bacteria can survive in extremely hot or cold environments, others can endure excessively acidic or salty environments. The danger zone, or the temperature range between 41 and 135 degrees Fahrenheit, is where most pathogenic bacteria thrive.

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To learn more about anaerobic bacteria:

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6 0

2 years ago

What are the processes that change one type of rock into another type in the rock cycle?

zloy xaker [14]

Answer:

Crystallization (cooling or solidification)
Erosion and sedimentation (lithification, burial and deposition)
Metamorphism (Melting due to heat and pressure)

Explanation:

In rock cycle, there are three important processes that changes one type of rocks into another type. Those processes are:

Crystallization: It is a process that takes place under the earth surface where magma cools down and is hardened to form igneous rocks. This process is also called freezing of rocks.
Erosion and sedimentation: The rocks on the surface of earth are broken into smaller fragments called sediments that are formed by weathering of rocks. These sediments are then carried either by wind or water to different places and settles at some place to form another type of rock named sedimentary rocks.
Metamorphism: Metamorphism takes place under the earth surface where extreme heat changes the mineral texture of the rock but does not melt it. such rocks are named as metamorphic rocks.

7 0

4 years ago

Whales have what seem like remnants of a pelvis and femur, as shown here. What are these structures an example of?

andriy [413]

vestigial limbs

vestigial limbs are the remnants from the development of any one organism's ancestors.

Humans, for one example, have no real need for an appendix now that we are no longer herbivores.

Look at a x-ray image of certain snakes and you can see the structural remains of feet.

3 0

3 years ago

Read 2 more answers

which one of the following statements is not true of the helper t cell response? science philosophy of the vsc

sergeinik [125]

The fact that helper T cells produce antibodies is incorrect. T cells can stimulate B cells to make antibodies, but they cannot make them by themselves.

<h3>What is cell-mediated immunity?</h3>

Cell-mediated immunity includes B cells and T helper cells, both of which are important components of the adaptive immune system. Antigen-presenting cells (APCs) first activate helper T cells by showing them the antigen that is carried by them. After T-helper cell activation, it secretes some cytokines that further stimulate the cell differentiation of T cells and activate B cells. The B cell, after activation, makes antibodies that are required to kill the particular pathogen in the body.

Hence, the option that mentions that helper T cells produce antibodies is incorrect.

Learn more about the cell-mediated immunity, here

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The question is incomplete. The complete question is below

1) which one of the following statements is not true of the helper t cell response? (select one)

a) They can stimulate B cells.

b) They are responsible for cell mediated immunity.

c) Helper T cell can secret cytokines.

d) They require an antigen presenting cell.

e) They produce antibodies.

4 0

1 year ago

based on the living things in the pyramid, tell me what examples would fit into these categories: primary producers, primary con

algol [13]

Answer:

- Oak trees: primary producers

- Caterpillars: primary consumers

- Blue Jays: secondary consumers

- Hawks: tertiary consumers

Explanation:

A trophic pyramid, also known as ecological pyramid or energy pyramid, is a graphic representation that shows the relationships between different types of organisms (i.e., producers and consumers) at the trophic levels of an ecosystem. The primary producers are autotrophic organisms that obtain energy from sunlight and chemical compounds from nonliving sources (e.g., photosynthetic plants, algae, etc). The primary consumers are organisms that eat primary producers (e.g., herbivores), while secondary consumers are organisms that eat primary consumers (e.g., omnivores). Moreover, tertiary consumers are predators and/or omnivores that eat secondary consumers (e.g., hawks). Finally, decomposers (e.g., bacteria) are organisms that obtain nutrients and energy by breaking down dead organic material (i.e., dead organisms) at all trophic levels into nutrients.

5 0

3 years ago