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3 years ago

Why are bacteria a necessary part of the nitrogen cycle?

2 answers:

5 0

Why is it important?

- Because when bacteria converts ammonia into nitrate and nitrite, producers need them to make proteins and then consumers eat the producers and reuse the nitrogen to make their own proteins.

WITCHER [35]3 years ago

4 0

Answer: The answer is... (A) Other living things cannot use atmospheric nitrogen

Explanation:

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A _____ is a section of a chromosome that codes for a trait. The specific combination of alleles an organism has is called its _

Lesechka [4]

Answer:

A gene is a section of a chromosome that codes for trait.The specific combination of alleles an organism has is called its genotype which affects the organisms features.

Explanation:

7 0

3 years ago

An 18,000-watt radio station transmits at 680 kHz. Determine the number of joules transmitted per second.

valina [46]

A watt IS by definition a J/s so and so an 18000 W station will use 18000 J/s so it is C

8 0

3 years ago

Read 2 more answers

1. A molecule of gas ___ phosphate groups attached to it. When the cell needs energy, it converts ATP into ___. When the cell is

masya89 [10]

Answer:

three

ADP

ATP

Explanation:

8 0

3 years ago

Use the key to identify each species. Write the letter of each species (A to G) in the correct

sveticcg [70]

Dichotomous keys are useful to identify organisms according to their morphological traits. The given key provides enough macroscopic morphological traits to identify these Arachnida species.

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A dichotomous key is a significantly useful tool to classify organisms. The key provides an easy and fast way for identification by describing different morphological traits, leading you to the correct taxonomic classification.

The key provides morphological descriptions about different taxonomic groups in an easy way to identify these traits in your individual.

The term dichotomous refers to how information is provided. You will always have two options (a and b, or 1 and 2), and you will have to choose one of them according to the characteristics of your organism.

In the exposed example, as the key provides morphological traits, we will separate the organisms into two groups:

the group that has the trait
the group that does not have it.

By recognizing each trait in each of the individuals, we will get to identify the species.

(a) Abdomen with a tail --------------------------- The only option is E

(b) Abdomen without a tail ---------------------- All the others A, B, C, D, F, G

2 ---Only for group A, B, C, D, F, G---

(a) Legs much longer than abdomen and cephalothorax ----------A and G

(b) Legs not much longer than abdomen and cephalothorax----- B, C, D, F

3 ---Only for group A, G---

(a) Hairs on the legs -----------------------------------The only option is A

(b) No hairs on the legs ------------------------------ G

4 ---Only for group B, C, D, F---

(a) Cephalothorax or abdomen segmented ----------------The only option is D

(b) Cephalothorax or abdomen not segmented ----------- B, C, F

5 ---Only for group B, C, F---

(a) Abdomen and cephalothorax of the same size --------The only option is F

(b) Abdomen and cephalothorax of different size -------B, C

6 ---Only for group B, C---

(a) Body covered with long hair ----------------------------------The only option is C

(b) Body not covered with hair ------------------------------------B

A → Tegenaria domestica

B → Ixodes hexagonus

C → Tyroglyphus longior

D → Chelifer tuberculatus

E → Abaliella dicranotarsalis

F → Poecilotheria regalis

G → Odielus spinosus

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4 0

2 years ago

This biological level of organization is represented by all three steps of the gene expression products. ____________

Licemer1 [7]

Answer:

The biological level of organization represented by all of the three steps of gene expression products is the central dogma of molecular biology.

Explanation:

DNA is divided up into functional units called genes. Each of them provides instructions for a functional product, that is, a molecule nedeed to perform a job in the cell. In many cases, the functional product of a gene is a protein.

The functional products of most known genes are polypeptides. Genes that specify polypeptides are called protein-coding genes.

Not all genes specify polypeptides. Instead, some provide instructions to build functional RNA molecules, such as transfer RNAs and ribosomal RNAs that play roles in translation.

The construction of polypeptide involves two major steps: transcription and translation. During the transcription, the DNA sequence of gene is copied to make an RNA molecule and in translation the sequence of mRNA is decoded to specify the amino acid sequence of the polypeptide.

6 0

3 years ago