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3 years ago

Which of the following statements is true about moss and fern reproduction?

Biology

1 answer:

DiKsa [7]3 years ago

4 0

The answer is; Both mosses and ferns have a dominant gametophyte generation.

The gametophyte is the phase in the life cycle of the plant where it is in the haploid phase and produces gametes. This phase also develops from a haploid spore. When the gametophyte produces spores, the gametes, in ferns and moss require water (because the spores have flagella to swim). The gametes meet and fuse to form a zygote that develops into the sporophyte phase of the plants. In higher plants, the sporophyte is the dominant phase.

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True or False. The complement system consists of several proteins that circulate in the blood and have the ability to enhance bo

nirvana33 [79]

Answer: False

Explanation: The COMPLEMENT SYSTEM consists of proteins synthesized in the liver. They are activated by inespecific harmful substance (antigen) and begins a cascade of proteins that finally forms an attack complex against bacteria.

The COMPLEMENT is part of the INNATE IMMUNITY, because it is an inherent response, something all humans born with, and it is part of the first defense barrier against any antigen. Part of the innate immunity are too: natural killer cells, neutrophils, monocytes, dendritic cells and macrophages.

On the other hand, the ADAPTATIVE IMMUNITY, is the response that the body develops after being exposed to an antigen before. It is like something that the body recognizes, and then "learns" how to act against it. Part of the adaptative immunity are: lymphocyte T and B, and the antibodies (substances called Immunoglobulins). The immunoglobulins (Ig) are glycoproteins present in the blood.

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3 years ago

Question 6 Which statement BEST describes the relationship between photosynthesis and cellular respiration? A Both processes rel

mixer [17]

Answer:

c. The products of one process are the reactants of the other process

Explanation:

CARBOHYDRATE and oxygen is the product of photosynthesis while it is reactant in respiration.

Similarly, Carbon dioxide is the reactant of photosynthesis while it is product of respiration.

3 0

3 years ago

Lamarcks idea of "acquired traits" Proposed that

Yuri [45]

<span>acquired traits are passed down from parent to offspring.</span>

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3 years ago

In the complete oxidation of glucose, six CO2 molecules are formed per glucose molecule. The number of CO2 molecules released by

Serga [27]

Answer:

0, 2, 4

Explanation:

The process of cellular respiration takes place in for phases which oxidizes the glucose molecule to the provide energy molecule called ATP.

Along with ATP, the process releases the metabolic water and carbon dioxide gas. In the oxidation of one glucose molecules, about 6 molecules of CO₂ are released. These CO₂ molecules are produced in the following manner:

1. Glycolysis: CO₂ gas is not produced during this reaction but only ATP and NADH are produced.

2. Pyruvate decarboxylation: the process converts the pyruvate produced by glycolysis to Acetyl-CoA. Formation of 1 Acetyl-CoA produces 1 CO₂ and since 2 Acetyl-CoA is produced therefore produces 2 CO₂ molecules.

3. Citric acid cycle: The cycle converts 2 Acetyl-CoA and produces 4 CO₂ in two cycles converting each Acetyl-CoA.

Thus, 0, 2, 4 is correct.

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3 years ago

How has globalization impacted world culture

Mnenie [13.5K]

Answer:Globalization, or the integration of societies and people through trade, technology, and enhanced labor markets, has had many positive effects on the world. Because of globalization, you can purchase cheaper goods, communicate with individuals from all over the world, and work in just about any country.

Explanation:

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3 years ago

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