BIOLOGY HIGH SCHOOL

Which is a biotic factor that affects the size of a population in a specific ecosystem?a. average temperature of the ecosystem
b. type of soil in the ecosystem
c. number and kinds of predators in the ecosystem
d. concentration of oxygen in the ecosystem

Answers

Answer 1
Answer:

A biotic factor that affects the size of a population in a specific ecosystem is: c. number and kinds of predators in the ecosystem.

An ecosystem can be defined as a biological community that comprises all living organisms (biotic factors) and the physical environment (abiotic factors) with which they interact.

Basically, some of the essential services that are provided by an ecosystem for the sustenance of life include;

  • Nutrient cycling
  • Water purification
  • Plant pollination

A biotic factor refers to the living organisms that are existing within an ecosystem and their effect on the population living within it. Thus, the number and kinds of predators living in an ecosystem is a biotic factor that would affect the size of its population.

In conclusion, all the other answer options are abiotic factors.

Read more: brainly.com/question/10988516
Answer 2
Answer: The answer is C. Numbers and kinds of predators in the ecosystem because biotic means living organisms and it's the population that can effect the ecosystem, so the ecosystem can be effected by the number of predators (living organisms) in the ecosystem.

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The enamel of your teeth is the inside coating.


TrueFalse

Answers

False, it is the very hard, protective outside layer of your teeth

Answer:

The answer is false.

Explanation:

Enamel is the outside coating.

Jerome also had blood work done to confirm the MI. The presence of troponin, or cardiac enzymes such as CK-MB, are a positive indicator of an MI. Why is their presence at higher levels in the blood indicative of an MI?a. They are by-products of aerobic metabolism and if they are present in higher amounts in the blood it shows that the myocardium is working harder.
b. They are substrates for aerobic metabolism and if increased in the blood show that the cardiac muscle is not functioning normally.
c. These proteins are normally found inside cardiac muscle cells and if present in the blood indicate damage to the cells.
d. They are by-products of anaerobic metabolism (glycolysis) and if increased indicate that the heart is not receiving oxygen.

Answers

Answer:

c.These proteins are normally found inside cardiac muscle cells and if present in the blood indicate damage to the cells.

Explanation:

  • When there is a decreased blood flow to the heart or if a particular part of the heart stops working then this is known as myocardial infarction (MI) and due to this the heart muscle gets damaged.
  • There are several biomarkers that are used to evaluate the functioning of the heart and these are known as cardiac markers, an example of this is Ck-MB which is an isoform of creatine kinase.
  • The CK-MB isoform is found in the cytosol of the heart muscle cells and it plays a role in causing the movement of high energy phosphates in and out of the mitochondria.
  • If there is a damage to the heart muscle cells which usually occurs following a myocardial infarction CK-MB levels elevates in the blood for a short period of time and this indicates MI.

Which statement is an accurate summary of meiosis?A. A cell is copied.
B.A gamete becomes a zygote.
C.A gamete makes a copy of itself.
D.A cell divides into gametes.

Answers

An accurate summary of meiosis is D. A CELL DIVIDES INTO GAMETES.

Meiosis is a special type of cell division wherein only have of the DNA copies are made. Meiosis divides cells two times. First cell division is Meiosis I and second cell division is Meiosis II. 

In Meiosis I, homologous chromosome pairs are segregated into two new daughter cells. In Meiosis II, the two new daughter cells produced in Meiosis I are again divided producing four daughter cells.
 
These four daughter cells become gametes when they mature. Some types of gametes are sperm, ova, pollen, or spores. They contribute to sexual production when facilitated together with fertilization.

Answer:

A cell divides into gametes.

Explanation:

took quiz

Three genes in fruit flies affect a particular trait, and one dominant allele of each gene is necessary to get a wild-type phenotype. a. What phenotypic ratios would you predict among the progeny if you crossed triply heterozygous flies? b. You cross a particular wild-type male in succession with three tester strains. In the cross with one tester strain (AA bb cc), only 1/4 of the progeny are wild type. In the crosses involving the other two tester strains (aa BB cc and aa bb CO, half of the progeny are wild type. What is the genotype of the wild-type male?

Answers

a. When crossing triply heterozygous flies (Aa Bb Cc), where each gene has one dominant allele and one recessive allele, the phenotypic ratios among the progeny would be 1:1. b. The genotype of the wild-type male can be deduced based on the phenotypic ratios observed in the crosses with the tester strains.

a. If you crossed triply heterozygous flies (Aa Bb Cc), where each gene has one dominant allele and one recessive allele, you can use the product rule to predict the phenotypic ratios among the progeny.

For each gene, the possible gametes are A and a, B and b, C and c. When you cross the triply heterozygous flies, you can determine the possible genotypes of the offspring:

Genotypes:

AA BB CC (wild type)

AA BB Cc (wild type)

AA Bb CC (wild type)

AA Bb Cc (wild type)

Aa BB CC (wild type)

Aa BB Cc (wild type)

Aa Bb CC (wild type)

Aa Bb Cc (wild type)

The phenotypic ratios can be determined by counting the number of wild-type (dominant phenotype) offspring and dividing it by the total number of offspring:

Wild-type progeny (AA BB CC, AA BB Cc, AA Bb CC, AA Bb Cc, Aa BB CC, Aa BB Cc, Aa Bb CC, Aa Bb Cc) = 8

Total number of progeny = 8 (since each possible genotype occurs once)

Phenotypic ratio: 8 wild-type : 8 total = 1:1

b. To determine the genotype of the wild-type male, we can deduce it based on the phenotypic ratios observed in the crosses with the tester strains.

In the cross with the tester strain AA bb cc, only 1/4 of the progeny are wild type. This means that the male being tested (wild-type male) must be heterozygous for the B and C genes (Aa Bb Cc) since the wild-type phenotype requires one dominant allele for each of the three genes.

In the crosses involving the other two tester strains (aa BB cc and aa bb CO), half of the progeny are wild type. This indicates that the wild-type male is homozygous for the A gene (AA Bb Cc) since the wild-type phenotype requires two dominant alleles for the A gene.

So, the genotype of the wild-type male is Aa BB Cc.

To learn more about  progeny

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Answer:

the genotype depends more on if its a boy or girl

Explanation:

Which part of the immune system is produced in the bone marrow and circulates through the blood to destroy germs?A.
red blood cells

B.
white blood cells

C.
lymphocytes

D.
fibrin

Answers

the answer is white blood cells

Answer:

B. the correct answer

Explanation:

Binary fission in a sentence

Answers

A division by fission followed by Endogenous spore formation, characteristics of the Schizosaccharomycetes.

The parasites multiply in two ways (a) by Binary Fission, and (b) by multiple division or segmentation .


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