List at least 3 reasons why scientists can not adequately catalog every species on Earth.

Answer: Transcription - A

Explanation:

This problem is talking about the lac operon and the gene expression of lac operon. If the gene is turned off, then transcription, the generation of mRNA won't occur.

Answer:

D

Explanation

no need to thank me

Answer:

its called a chemical change

Answer:

primary

Explanation:

Answer

tertiary consumer I think

Explanation:

Water, a necessary reactant in photosynthesis, is contained in the leaves themselves. ... Carbon dioxide (CO2) is able to enter the leaf through the stomata, or the holes in the leaf.

Answer:

the answer is C

Answer:

All living things have DNA: the chemical instructions on how to make a living thing, from humans to strawberries. Many people assume that because DNA is so small, we can't see it without powerful microscopes. But in fact, DNA can be easily seen with the naked eye when collected from thousands of cells.

Explanation:

Answer:

Due to its formation in the supernova nucleosynthesis.

Explanation:

The higher abundance of lighter elements in the universe than heavier elements occurs due to its formation in the supernova nucleosynthesis. The lighter elements such as hydrogen and helium are present in abundant amount and formed in supernova nucleosynthesis as compared to other heavier elements which are formed through other events. The lighter elements occupy less volume and space as compared to heavier elements which is also a reason for their abundance.

Answer: D. The Krebs cycle

Explanation:

If oxygen is available, glycolysis is followed by two processes in the mitochondria -- the Krebs cycle and oxidative phosphorylation, respectively -- that further increase ATP yield.

When oxygen is present, glycolysis is followed by

Answer:

D. the Krebs cycle

Answer:

As mitosis ends, each developing daughter cell receives one set of chromosomes. The nuclear membranes return as the cell divides through the process of cytokinesis. In this way, mitosis ensures genetic continuity across generations of cells.

Answer:

espanhis plis plisplisplisplis

Answer:

The answer is A.Primary succession

Explanation:

Primary succession is an ecological succession that begins in essentially lifeless areas, such as regions in which there is no soil or where the soil is incapable of sustaining life (because of recent lava flows, newly formed sand dunes, or rocks left from a retreating glacier).

Answer:

a. primary succesion

Explanation:

Answer:

I think it's mutation

Explanation:

Answer:

its 50%

Explanation:

I think I hoped I helped

Good luck you can do it!

Answer:

dont know raadi solve your self

Answer: Sickle cell disease affects millions of people around the globe and is the 4th leading cause of death in children in many developing countries like Africa. It causes health problems like anemia, swelling, bacterial infections Sickle cells that block blood flow to organs deprive the affected organs of blood and oxygen. In sickle cell anemia, blood is also chronically low in oxygen. This lack of oxygen can damage nerves and organs, including your kidneys, liver, and spleen. The sickle cell mutation is relevant to malaria because infection of a red blood cell with the malaria parasite leads to hypoxia. People develop sickle-cell disease, a condition in which the red blood cells are abnormally shaped if they inherit two faulty copies of the gene for the oxygen-carrying protein hemoglobin. The faulty gene persists because even carrying one copy of it confers some resistance to malaria. Sickle cell disease is more common in Hispanic-Americans from Central and South America. People of Middle Eastern, Asian, Indian, and the Mediterranean. Most of the different air pollutants are closely intercorrelated, and increasing overall levels seem to correlate with increased hospital attendance, although higher concentrations of atmospheric carbon monoxide may offer some benefit for patients with sickle cell disease.

Explanation: Some of it is in my own words but make sure to read it over and paraphrase. good luck!! :)

The morphology of red blood cells is affected by a genetic condition called sickle cell anemia. People with sickle cell anemia have red blood cells shaped like a sickle or crescent moon, instead of having the typical angled disc form.

The morphology of red blood cells is affected by a genetic condition called sickle cell anemia. People with sickle cell anemia have red blood cells shaped like a sickle or crescent moon, instead of having the typical angled disc form. Red blood cells with this abnormal form can become rigid and sticky, resulting in a number of problems including discomfort, anemia and organ damage.

People of sub-Saharan African descent, as well as those in many areas of the Middle East and India, are most likely to have sickle cell anemia. It is believed that an estimated 300,000 newborns are born with sickle cell anemia each year, with the majority of these incidences occurring in Africa.

It is interesting to note that sickle cell anemia is known to offer some protection against malaria, a condition caused by a parasitic infection spread by mosquitoes. People who have one copy of the sickle cell gene are less likely to get severe malaria than people who don't have it, and people who have two copies of the gene (sickle cell anemia) are also less likely to get malaria.

Therefore, the morphology of red blood cells is affected by a genetic condition called sickle cell anemia.

Learn more about sickle cell anemia, here:

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Answer:B. They are divided

Explanation:

Answer:

Nucleotides

Explanation:

DNA structure

DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code

Answer:

C

Explanation:

Answer:

C.Noncoding DNA

Explanation:

''Noncoding DNA does not provide instructions for making proteins. Scientists once thought noncoding DNA was “junk,” with no known purpose. However, it is becoming clear that at least some of it is integral to the function of cells, particularly the control of gene activity.

-MedlinePlus Geneticsmedlineplus.gov › genetics › understanding ›basics ›

''It is important to note that DNA damage, in and of itself, does not necessarily lead ... type of point mutation, called a nonsense mutation, converts a codon encoding an ... Because codons are triplets of nucleotides, insertions or deletions in groups of ... Beneficial mutations generally code for new versions of proteins that help...''

– Chemistrywou.edu › courses › online-chemistry-textbooks › chap.

''Non-coding DNA sequences do not code for amino acids. Most non-coding DNA lies between genes on the chromosome and has no known function. Other non-coding DNA, called introns, is found within genes. Some non-coding DNA plays a role in the regulation of gene expression.''

- Institutewww.genome.gov › genetics-glossary › Non-Coding-DNA

Answer:

The First one is correct!! ♥️

Answer:

A crossing over introduces variety by producing different combinations of alleles

Answer:

I think that it is E if it is not I am sorry

Explanation:

Answer:Ruby Bridges, one of four African American girls to integrate the New Orleans public school system in 1960, came to symbolize the innocence and bravery of the children involved in the effort. Ruby Bridges rose to national prominence during the New Orleans School Crisis of 1960.

Explanation:

Explanation:

photosynthesis

mutualism

decomposers

chemotrophs

photosynthesis:

Photosynthetic bacteria use the energy of the sun to make their own food. In the presence of sunlight, carbon dioxide and water are turned into glucose and oxygen. The glucose is then turned into usable energy

mutualism:

Some bacteria depend on other organisms for survival. For example, some bacteria live in the roots of legumes, such as pea plants. The bacteria turn nitrogen-containing molecules into nitrogen that the plant can use.

decomposers:

Bacteria known as decomposers break down wastes and dead organisms into smaller molecules. These bacteria use the organic substrates they break down to get their energy, carbon, and nutrients they need for survival.

Answer:

Avascular tissues are tissues that are devoid of any blood supply by arteries,veins or capillaries these such type of tissues will ten d to be present right to a next highly vascular tissue through which it can revive nutrients and circulation.

I hope this might help u

Answer:

C

Explanation: Because to grow plants need the basic stuff like water and sunlight but in the desert you have a great amount of sunlight but you have much water.  

Answer:

Mass = 2000kg

Explanation:

Mass = [tex]\frac{Force}{acceleration }[/tex]

= [tex]\frac{6000}{2}[/tex]

= 2000kg

Answer:

the sleep-wake cycle. the body temp. cycle. the cycles in which a number of hormones are secreted. Infradian rhythms have a period of more than 24 hours. The menstrual cycle in women and the hibernation cycle in bears are two good examples.

Answer:

c

Explanation: