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belka [17]
3 years ago
11

1. How many different kinds of cells can you see in this picture? Describe at least 2

Biology
1 answer:
romanna [79]3 years ago
3 0
There is no picture, though.
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Ecological succession that occurs in an area where no ecosystem existed before (such as bare rock with no soil) is called:
Brilliant_brown [7]
D<span>. </span>Primary succession<span> / </span>secondary succession<span> e. Genetic drift / </span>primary succession<span>. </span>d<span>. ... A predictable series of </span>environmental<span> changes </span>occur<span> in an </span>ecosystem<span> after a ... An </span>area<span> of </span>bare rock<span> outcrop is colonized by small lichens and mosses for ... Weed seeds will </span>not<span> disperse over a large enough </span>area<span> to colonize a prairie. a.</span>
7 0
2 years ago
In the ABO series, the gene for blood type O is , while A and B are genes, and AB is .
Nesterboy [21]

Answer:

Gene for blood type O is recessive

Gene for blood type A and B is dominant

Gene for blood type AB is neither dominant nor recessive but a form of co-dominance

Explanation:

In the ABO blood group,  

A and B are dominant genes, O is recessive genes.  

So the different genotype and its corresponding phenotype is as follows –  

Genotype    Phenotype

AO     A

BO     B

AB     AB

AA     A

BB     B

OO     O

Hence, the two alleles AB occur and express together. Therefore, AB blood group is an example of co-dominance.  

Blood type also varies with the presence of Rh factor. If Rh factor is present, the blood type will represented with a “+” symbol. And if Rh factor is absent, the blood type will be represented by “-“symbol.

6 0
3 years ago
Two test tubes are filled with a solution of bromthymol blue. A student exhales through a straw into each tube, and the bromthym
AlekseyPX

Explanation:

The plant is utilizing CO2 in photosynthesis

Photosynthesis produces glucose and O2 from inorganic CO2, light energy and water.

6CO2 + 6H20 + (energy) → C6H12O6 + 6O2

Bromothymol blue, an acid indicator, goes from blue to yellow when reacting with acid. The color change in sunlight  confirmed the use of CO2, dissolved within the solution as carbonic acid- its removal from the solution makes the more basic, and the solution goes from yellow (acidic) to blue (alkaline).

CO2 + H2O ↔ H2CO3

Further Explanation:

Photosynthesis is a chemical pathway that’s integral to producing energy in plants and other primary producers. Energy in the form of molecules of glucose is produced from light, water and carbon dioxide while oxygen is released.

Occuring in several complex steps, photosynthesis is a rate limited reaction, it depends on several factors including carbon dioxide concentration, ambient temperature and light intensity; the energy is retrieved from photons, I.e. particles of light, and water is used as a reducing agent. Water supplies chlorophyll in plant cell with replacement electrons for the ones removed from photosystem II.

Additionally,

  • water (H2O) split by light during photolysis into H+ and OH- acts as a source of oxygen along with functioning as a reducing agent; it reduces the molecule NADP to NADPH by providing H+ ions and produces molecules of the energy storage molecule ATP through an electron transport chain.
  • This occurs in the thykaloids, where pigment molecules like chlorophyll reside.
  • Later, in dark reactions, NADP and NADPH are used in the Calvin cycle where monosaccharides or sugars like glucose are produced after the modification of several molecules. These store energy in their bonds, which can be released in respiration in the mitochondria.

In all eukaryotic cells mitochondria are small cellular organelles bound by membranes, these make most of the chemical energy required for powering the biochemical reactions within the cell. This chemical energy is stored within the molecule ATP which is produced. Respiration in the mitochondria utilizes oxygen for the production of ATP in the Krebs’s cycle via the oxidization of pyruvate( through the process of glycoysis). The electron transport chain, in which oxygen functions as the terminal electron acceptor occurs in both plants and animals.

Learn more about photosynthesis at brainly.com/question/4216541

Learn more about cellular respiration at brainly.com/question/11203046

Learn more about cellular life at brainly.com/question/11259903

#LearnWithBrainly

5 0
3 years ago
Which of the following describes describes a response to external stimuli?
Natali5045456 [20]

The answer is A because the subject is responding to something that is going on outside of it, if that makes any sense :)

Hope this helps! Have a great day!

8 0
3 years ago
What are 4 elements that comprise over 95% of the human body?
Igoryamba
They are oxygen, carbon, hydrogen, and nitrogen.
4 0
3 years ago
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