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Alina [70]
3 years ago
15

A fundamental concept of ecology is that living

Biology
1 answer:
alisha [4.7K]3 years ago
6 0

Answer:

(4) interact with other living organisms and interact with the physical environment.

Explanation:

Ecology is a branch of biology in which we study about relationship that is present between living organisms with their environment. Alexander von Humboldt is the first person who study the relationship between organisms and environment. He is also called father of ecology due to its contributions to this field. Ecology consist of 5 levels i. e. organism, population, community, ecosystem, and biosphere.

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Neither

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Nitrogen is neither a cation nor an anion because it is an atom and atoms are electrically nuetral.

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Describe the relationship between the concentration of in the blood and the
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sciencebiologybiology questions and answersConcentration Of NAD+ (umol/L) 4 8 12 16 20 Concentration Of Lactic Acid (mmol/L) OHHHHHHHHHHHHHHHHHHHH...

Question: Concentration Of NAD+ (umol/L) 4 8 12 16 20 Concentration Of Lactic Acid (mmol/L) OHHHHHHHHHHHHHHHHHHHH 4 8 12 16 20 Time (weeks) Figure 2. The Concentration Of NAD* (top) And Lactic Acid (bottom) In The Blood Of A Representative Treated Individual (a) Describe The Pattern Of Inheritance That Is Most Likely Associated With A Mutation In The MT-ND5 Gene. ...

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Concentration of NAD+ (umol/L) 4 8 12 16 20 Concentration of Lactic Acid (mmol/L) OHHHHHHHHHHHHHHHHHHHH 4 8 12 16 20 Time (we

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Concentration of NAD+ (umol/L) 4 8 12 16 20 Concentration of Lactic Acid (mmol/L) OHHHHHHHHHHHHHHHHHHHH 4 8 12 16 20 Time (weeks) Figure 2. The concentration of NAD* (top) and lactic acid (bottom) in the blood of a representative treated individual (a) Describe the pattern of inheritance that is most likely associated with a mutation in the MT-ND5 gene. Explain why individuals are not typically heterozygous with respect to mitochondrial genes. (b) Identify a dependent variable measured in the researcher's experiment. Identify one control that the researcher could use to improve the validity of the experiment. Justify the researcher analyzing blood samples at many intermediate time points instead of at only the beginning and the end of the 20-week period. (c) Describe the relationship between the concentration of NAD in the blood and the concentration of lactic acid in the blood during the first 5 weeks of treatment with the vitamin. Based on Figure 2, calculate the average rate of change in blood NAD concentrations from week 5 to week 17. (d) The researcher performed a follow-up experiment to measure the rate of oxygen consumption by muscle and brain cells. Predict the effect of the MT-ND5 mutation on the rate of oxygen consumption in muscleand brain cells. Justify your prediction. The researcher had hypothesized that the addition of the vitamin that is similar in structure to NADH would increase the activity of the mutated NADH dehydrogenase enzyme in individuals

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3 years ago
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Indicate whether each of the following descriptions better applies to a centromere (C), a telomere (T), or an origin of replicat
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Answer:

T T C O C T

Explanation:

Each eukaryotic chromosome usually has repeated telomere sequences ranging from 2 to as many as 2000.

There is normally just one specialized DNA sequence called the centromere per eukaryotic chromosomal DNA molecule.

The origin of replication is the site where DNA duplication starts in S phase.

The centromere attaches the chromosome to the mitotic spindle via the kinetochore structure.

Teleomere contains repeateted sequences at the ends of the chromosomes.

3 0
3 years ago
2. Describe how the lac operon functions, and explain how it permits E.
MAXImum [283]

Answer:

The lac operon is an operon, or group of genes with a single promoter (transcribed as a single mRNA). The genes in the operon encode proteins that allow the bacteria to use lactose as an energy source. coli normally metabolise glucose, but if glucose is not available in a new environment, the lac operon can allow E. coli to metabolise lactose, the sugar found in milk using the structural genes beta-galactosidase and lactose permease. The lac operon of E. coli contains genes involved in lactose metabolism. ... It normally blocks transcription of the operon, but stops acting as a repressor when lactose is present. The lac repressor senses lactose indirectly, through its isomer allolactose.

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TRUE! you didn't know that?

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