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sveta [45]
4 years ago
8

Nematodes and arthropods both _____. _____ Select one: a. develop an anus from the blastopore (pore) formed in the gastrula stag

e b. are suspension feeders c. grow by shedding their exoskeleton d. are lophotrochozoans e. have ciliated larvae
Biology
1 answer:
Zina [86]4 years ago
3 0

Answer:d

Explanation:nematodes are round worms.they live in sea ,land or freshwater habitat.they have an hydrostatic skeleton for movement. They possess a flexible and non-cellular cuticle.They are known for shedding their cuticle. This process is necessary for their growth.an example of nematode is the hookworm.

Arthropods are the most diverse phylum in the animal kingdom.they have jointed appendages and an exoskeleton containing chitin.they may be segmented into head and truck, head, thorax and abdomen or cephalothorax and abdomen.they tend to shed of their exodkeleton during the process of metamorphosis . examples of arthropods include ticks, cockroaches

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What is the significance of a recombinant plasmid?
Ber [7]

Often a plasmid is used in recombinant cloning technology to clone newly isolated genes. It is also very common to use a recombinant plasmid to express large amounts of a known gene to obtain RNA or protein from it. Such recombinant gene expression has been indispensable for the biotechnology industry.

3 0
4 years ago
The gene D controls wing shape in flies and has two alleles: D is wild-type and dominant, and d is recessive and causes flies to
Juliette [100K]

Answer:

7 % progeny will show wild type phenotype

Explanation:

Parent 1: Normal wings and small eyes : DDee

Parent 2 : Downward wings and normal eyes : ddEE

DDee X ddEE = DdEe ( All have normal wings and normal eyes )

When a F1 individual is test crossed:

DdEe X ddee =

De/de = Parental

dE/de = Parental

DE/de = Recombinant

de/de =  Recombinant

Recombination frequency between the two genes is 14% hence DE/de and de/de will each have 7% frequency. Since DE/de ( DdEe ) will give wild type phenotype, it means that 7% progeny will have wild type phenotype.

7 0
4 years ago
Identify the niche of the deer
Andreyy89
Hello there ^^ 
 Deer<span> live in mixed forests habitats, on wooded farmlands and even in suburban areas of established cities. In winter they take to coniferous forests for shelter. </span>Deer <span>are a prey species, providing food for coyotes, bobcats, cougars, wolves and occasionally humans.</span>
8 0
3 years ago
01:53:26 The main factors that determine the amount of runoff in an area include the shape of the land, how people use the land,
zysi [14]

Answer:

a

Explanation:

since runoff can be caused by little rainfall but in abundance of vegetation then it may decrease since they stop or slow down it's flow but runoff can not be affected by rocks since the velocity may even wear it

3 0
3 years ago
an enzymatic weight-gain supplement claims to help users digest all carbohydrates in fruits and vegetables. what key enzyme woul
FrozenT [24]

An enzymatic weight-gain supplement claims to help users digest all carbohydrates in fruits and vegetables. Cellulase enzyme is present.

<h3>What is cellulase ?</h3>

Cellulase (systematic name 4—D-glucan 4-glucanohydrolase) is any of a number of enzymes that catalyse cellulolysis, the breakdown of cellulose and some related polysaccharides, and is primarily produced by fungi, bacteria, and protozoans.

Endohydrolysis of (14)-D-glucosidic linkages in lichenin, cereal -D-glucan, and cellulose

The term is also applied to any naturally occurring combination or complex of numerous such enzymes that break down cellulosic material sequentially or cooperatively.

Cellulases convert the cellulose molecule into shorter polysaccharides and oligosaccharides, as well as monosaccharides (or "simple sugars") like -glucose. Because it makes a key plant component usable for food and use in chemical reactions, cellulose breakdown has significant economic significance. The 1,4-D-glycosidic bonds in cellulose, hemicellulose, lichenin, and cereal -D-glucans are hydrolyzed in this particular process. Compared to the breakdown of other polysaccharides like starch, the breakdown of cellulose is particularly challenging because the molecules of cellulose bind tightly to one another.

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brainly.com/question/6335573

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1 year ago
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