Most familiar non-vascular plants that contain simple conducting cells are

1 answer:

5 0

The most familiar non-vascular plants that contain simple conducting cells are Mosses. Most non vascular are bryophytes and are small in size, they lack vascular tissues and also lack true leaves, seeds, and flowers. Instead of roots, the have hair-like rhizoids that functions to anchor them to the ground and to absorb water and mineral salts from the soil. They are three types, mosses, hornworts and liverworts.

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Which of these will diffuse across a plasma membrane? select one:

Alina [70]

<span>d. neither of these will cross a plasma membrane.

Glucose cannot diffuse across a plasma membrane as it is polar. Since the question doesn't specify the type of diffusion, simple diffusion is assumed.

If you count facilitated diffusion, then A is the answer.</span>

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2 years ago

Which statements are accurate about earthquakes that occur during the formation of a chain of islands and seamounts by a hotspot

Westkost [7]

Answer:

The following are accurate about earthquakes which occur during the formation of a chain of Islands and seamounts by hotspots:

- Earthquakes occur along fault lines within volcanoes formed by the hotspot.

- Earthquakes occur along fault lines during plate movements.

- Earthquakes occur when Earth’s crust bends under the weight of islands formed by the hotspot.

Explanation:

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2 years ago

In 1958, Meselson and Stahl conducted an experiment to determine which of the three proposed methods of DNA replication was corr

Katen [24]

<h2>Meselson and Stahl conducted an experiment to determine the correct proposed methods of DNA replication was semi-conservative. the three proposed models for DNA replication are semi-conservative, conservative, and dispersive.</h2>

Explanation:

In Semi-conservative replication model, the two strands of DNA uncoil from each other. It perform with the original strand and a new strand.

In Conservative replication model, DNA replication didn't open at all, but the parent strands remains undamaged by creating a new and separate molecule that consists of two new strands.

In Dispersive replication model, DNA replication results in two DNA molecules that consists of both parental and daughter DNA.

He demonstrated that semi-conservative DNA replication is an universal mechanism allocated by all organisms on Earth.

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What is the process where organisms that are better suited to their environment reproduce and pass on their genes more successfu

maxonik [38]

Answer:

Natural selection

Explanation:

Natural populations have variations. Organisms of a population have various genetic traits. Some of these genetic variations make the organisms better suited to the prevailing environmental conditions. These organisms are more likely to produce more progeny. Over generations, the frequency of the beneficial genetic traits increases in the population due to the higher reproductive success of the organisms with these genetic traits.

This process of differential fitness of organisms of a population where the organisms with adaptive genetic traits have survival and reproductive benefits is called natural selection.

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3 years ago

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Which description best explains Watson and Crick's DNA model? DNA is a single–stranded molecule that has nitrogenous bases towar

inysia [295]

<span>The discoverers of DNA were not James D Watson and Francis Crick. They are the first scientist to formulate an accurate description of the DNA’s (deoxyribonucleic acid) complex , double-helical structure. They discovered that base pairing nucleotides must be; adenine and thymine; and cytosine and guanine. These base pairs are held together by a hydrogen bond, atype of chemical reaction that s easy to break and easy to reform. The statement is “DNA is a double helix made of two strands linked together with hydrogen bonds.”</span>

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2 years ago