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Schach [20]
2 years ago
8

What is the source of the carbon dioxide that is used in photosynthesis?

Biology
2 answers:
Fofino [41]2 years ago
6 0

Answer:

C) the atmosphere

Explanation:

just took the quiz

nikitadnepr [17]2 years ago
4 0
Sunlight is the source of Carbon Dioxide
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3. There is a gene that affects pea pod color and has two alleles: G = yellow and g = green. There is another gene that affects
Lena [83]

A. Mendel in his experiments used two true breeding plants that only express one particular trait. He would chose plants with different versions of the trait and cross pollinate them. So, in this case, Mendel’ s P generation would be:

P: GGWW  x  ggww

B. The possible gametes produced by these first or original parent plants (GGWW and  ggww genotypes of the parents) are:

GW and gw. When an organism makes gametes, each gamete receives just one copy of the gene, which is selected randomly (Mendel’s law of segregation).

C. If the gametes GW and gw are joined, the genotype in the offspring would be GgWw. This is dihybrid organism because it is heterozygous (have two different allelss, one recessive, one dominant) at two different genetic loci, G and W. The offspring represents the F1 generation.

D. If the individuals with the genotype GgWw are crossed with the individuals with the same genotype (GgWw), the possible gametes are GW, Gw, gW, gw. The possible genotypes for the F2 generation are:  GGWW, GGWw, GgWW, GgWw, GGww, Ggww, ggWW, ggWw and ggww. There are nine different genorypes. The genotypic ratio is 1:2:2:1:4:1:2:2:1.

E. F2 generation of offspring of this dihybrid cross has a 9:3:3:1 phenotype ratio. Mendel did similar experiment with his plants and conluded that the pairs of traits in the parental generation (P generation) sorted independently from one another, from one generation to the next.

4 0
3 years ago
Water at about 4°C (39°F) is more dense than water at 0°C (32°F). Why would the living organisms in the lake die if the water at
9966 [12]
The water would freeze across the surface of the lake, blocking the dissolving of oxygen and nutrients. <span>Water is actually less dense when frozen, which is why ice cubes and ice bergs all float. This is also why you can ice skate on a lake if the ice gets thick enough on the surface. Many organisms that live in freezing lakes have special adaptations which help them survive.</span>
4 0
3 years ago
Read 2 more answers
What is the thin layer of endothelial tissue that lines the inner surface of the heart and the valves called
serious [3.7K]

Answer:

Endocardium

Explanation:

The endocardium makes the innermost lining of the wall of the heart. It is present over the thin layer of connective tissue. The function of the endocardium is to provide a smooth lining for the chambers of the heart. The valves present in the heart also have endocardium. The dense connective tissue of the heart valves is covered by endocardium.

The presence of the smooth endocardium made up of endothelium reduces the surface friction as blood passes through the heart. The endocardium of heart chambers is continuous with the endothelial lining of the large blood vessels that are attached to the heart.

8 0
3 years ago
The relationship between the bacterium Xenorhabdus nematophila and its nematode host, Steinernema carpocapsae, is classified as
Cloud [144]

Answer:

The correct answer will be-cooperate

Explanation:

Nematodes or ringworms interact with the bacteria in one of three ways: mutualism, parasitism and symbiosis.

The interaction between nematode <em>Steinernema carpocapsae</em> and bacteria  <em>Xenorhabdus nematophila</em> prove to be a symbiotic relationship as both the organisms benefit each other.

The interaction between these two organisms is also known as cooperation because both the species can live without each other also. It is during the infective juvenile stage, the bacteria start living in the intestine of the nematode and benefiting the nematode. Both bacteria and nematode help each other killing the host and then utilizing the cadaver of the host.

Thus, cooperate is the correct answer.

6 0
3 years ago
In a healthy person, after a carbohydrate-rich meal, the production of the hormone ________ will increase, causing the uptake of
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 The answers are insulin?glucose. After a meal, the digestion of carbohydrates in the intestines release sugars , which are absorbed into the blood. If food contained high levels of simple sugars then blood sugars level rises quickly. Insulin is a hormone which is released by the pancrease in response to rising blood sugar levels. Insulin causes sugars to be stored in the liver in the form of glycogen and this in turn lowers your blood sugar level. 
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3 years ago
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