You are examining the phylogenic relationship of a newly discovered plant species (Species 2). You amplify the RUBISCO barcode and sequence the DNA. After entering your sequence into BOLD the following comparison comes up.Species 1. ATGCAAATTTGGGCATCCGAATGGTTGCAASpecies 2. ATGCAAATTTTTTGGGCATCCGAATGGCAAWhat DNA modifications have occurred in Species 2 that makes it different from Species 1? Check all that apply.a. Inversionb. Duplicationc. Deletion

Answer:

The correct option is: c. a doorknob contaminated with the cold virus

Explanation:

Fomites are the inanimate objects or substances that can get contaminated with the pathogens and are capable of transferring the pathogens to the new hosts.

Sterilization of the possible fomites should be done in order to prevent cross-infection.

Examples of fomites are hair, towels, clothes, door knobs, cups, switches, handrails, remote controls, pens, syringes, bedding, etc.

Answer: Option E

Explanation:

Most of all poriferans/ sponges are suspension or filter feeders. Suspension feeders are organisms that each food materials which are suspended in their environment ie sea water, while filter feeders filter their food source from water by drawing water containing bacteria and organic matter in through their ostia(pores). Substrate feeders at organism that live in or on their food source.

Members of the poriferans do hava an ectoderm (epidermis) and an endoderm including a non-cellular late that is present in between the two layers.

No, they do not belong to the phylum cnidaria but porifera. Cnidarians including hydra, sex anemones, jellyfish etc and these have features that different from that of the sponges e.g the presence of nematocysts in cnidarians

Sponges can reproduce both sexually and asexually. Sexually by releasing larva fertilized in the sponge into water where they float around for some days and then proceed to adhere to a solid surface and begin their growth into adults. Asexually by budding

They are multicellular, lack tissues, are animals, lack organs and are asymmetrical. These are th distinguish features of poriferans

Answer: Option E.

Explanation:

Phylum porifera are group of organisms that live in aquatic habitats both marine and freshwater. They are diploblastic I.e they have two germ layers. They are assymetrical . They have round or vase-like or sac- like shape. They are multicellular and have bodies full of pores. They lack tissues and organs. Sponges are members of the phylum porifera.

Answer:

The correct answer is option - B.

Explanation:

Clams are the bivalve mollusks that are classified as a consumer or the filter feeder as they internalize the particles and the suspended nutrients and matter in the water to carry out energy and nutrients for them.

These are known as a consumer due to their bivalve body and get its specific structure which is using gills to filter the food or nutrients particle. This makes the clams unique as some other bivalves organisms.

Thus, the correct answer is option - B.

The strongest evidence that classifies clams as consumers is that they gain energy and nutrients by filtering particles from the water.

WHAT ARE CONSUMERS:

• Consumers are a group of organisms that are incapable of synthesizing their own food, hence, they depend on other organisms for source of energy by feeding on them.

• A consumer can be a primary consumer, secondary consumer or tertiary consumer. Primary consumers feed on producers directly while secondary consumers feed on primary consumers and so on.

• Therefore, an organism is classified as a consumer on the basis of its mode of nutrition.

• Hence, the strongest evidence that classifies clams as consumers is that they gain energy and nutrients by filtering particles from the water.

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Answer:

It is an example of enzyme activation through the pH of the environment surrounding the enzyme.

This phenomenon is called proenzyme, proenzymes are inactive enzymes that, due to chemical changes in the environment that vary, are activated or not depending on these.

Explanation:

Proenzymes, generally the best known or named, are found in the digestive system, where the sequential digestion of food is essential, with an order, and the enzymes must be controlled or activated at certain moments of digestion.

Proenzymes can be activated by the presence of chemicals, pH acids and even pH alkalinity, the change of the medium is what gives the enzyme permission to start with its reaction effect.

Usually this happens with enzymes that must be controlled, and that their activity must be in certain periods so as not to generate pathologies or even destroy a tissue of the organism.

Living things are divided into five kingdoms: animal, plant, fungi, protist and monera. Living things are divided into five kingdoms: animal, plant, fungi, protist and monera.

The Hawaiian Islands were formed by a hot spot occurring in the middle of the Pacific Plate. While the hot spot itself is fixed, the plate is moving. So, as the plate moved over the hot spot, the string of islands that make up the Hawaiian Island chain were formed.

What is hotspot?

"In geology, hotspots (or hot spots) are volcanic locales thought to be fed by underlying mantle that is anomalously hot compared with the surrounding mantle".

What is Pacific plate ?

"The Pacific Plate is an oceanic tectonic plate that lies beneath the Pacific Ocean. At 103 million km2 (40 million sq mi), it is the largest tectonic plate".

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Answer:

Explanation:

The Hawaiian Emperor seamount chain is a well-known example of a large seamount and island chain created by hot-spot volcanism. ... The Hawaiian Islands were formed by such a hot spot occurring in the middle of the Pacific Plate.