Trees in the rainforest store __________, which is released into the atmosphere when the trees are cut down and which may contribute to climate change.A.
oxygen
B.
carbon dioxide
C.
helium
D.
hydrogen

choanocytes - spelling might be off on that... it means collared cells from Latin roots.

Answer:

Choanocytes

Explanation:

Choanocytes are membranous flagellate cells lining the spongiocelium (central body cavity of Porifera kingdom animals) and other internal vibrating chambers of sponges.

The movement of its flagellacreates the water stream that brings nutrients and gases. The nutrients are filtered by the choanocyte, which is not a solid structure, but rather a set of small erect rods separated by spaces.

Any organic particle or plant microorganism trapped in the choanocyte is routed down toward the cell body and endocyted, with intracellular digestion occurring in digestive vacuoles.

Answer:

C. subject to biological magnification.  

Explanation:

DDT is an insecticide that exhibits slow metabolism and excretion. The slow breakdown of DDT causes it to accumulate in fat tissues of organisms. Biological magnification refers to the process of increased concentration of toxic chemicals in the tissues of living beings of higher tropic levels. The accumulated higher concentration of DDT poses harmful effects on the health of top consumers.

Answer:  Then the longer it is, the more it protects against degradation. Proteins that are needed over a long period of time come from a long tailed mRNA.

Explanation:

Messenger RNA (mRNA) is the ribonucleic acid that transfers the genetic code from the DNA of the cell nucleus to a ribosome in the cytoplasm. It determines the order in which the amino acids in a protein will bind and acts as a template or pattern for the synthesis of that protein.

Messenger RNA is synthesized in the cell nucleus in eukaryotes from the process called DNA transcription. In most cases, once this messenger RNA has been synthesized, it must be matured (RNA maturation). This involves the removal of intercalary sequences called non-coding introns from the protein to be synthesized. Then, the addition of a structure called CAP to the 5' end, which is a modified guanine nucleotide needed for the normal process of DNA transplantation and maintaining its stability. This is critical for proper recognition and access of the ribosome.  Also, polyadenylation which is the addition of the sequence called Poly-A to the 3' end. The Poly-A sequence is made up of several adenine molecules and is located at about 20-30 bp towards the tail (AAPAA sequence) or polyadenylation signal, which protects the end of the mRNA. The polyadenylation helps to increase the period of the message, so that the transcription lasts longer in the cell and therefore more protein is translated and produced.

This mature messenger RNA is transferred to the cell's cytoplasm, in the case of eukaryotes, through pores in the nuclear membrane.  The messenger RNA in the cytoplasm is coupled to the ribosomes, which are the machinery in charge of protein synthesis.  However, after a certain amount of time the mRNA is degraded into its component nucleotides, usually with the help of ribonucleases. So, an mRNA with a short tail will have a shorter lifespan.

Then, proteins that are needed over a long period of time come from a long tailed mRNA. And proteins that are briefly nedded come from a short tailed mRNA. This is because, as explained, the Poly-A tail serves to protect the mRNA molecule from degradation. So, then the longer it is, the more it protects against degradation.

Answer:

the type of molecule-destroying enzyme he used

Explanation:

Frederick Griffith and Oswald Avery were scientific researchers who discovered DNA. Frederick Griffith began the research and Oswald Avery continued his research in 1944 when they made the discovery of DNA. When Avery repeated Griffith's research the experimental variable in Avery's experiment was the type of molecule-destroying enzyme he used.

The arc length of circle is 6.81. thus option C is correct.

How is the radius used to compute arc length?

The arc length formula for a circle is times the radius of a circle. When is in radian, the arc length formula in radians is arc length = r. Arc Length = (/180) r, where r is the angle in degrees and L is the length of an arc.

The following equation is used to compute the arc length:

Where r is the radius and C is the central angle, arc length = 2r (C/360).

2(6) (65/360) arc length

The length of the arc is 6.81 inches.

As a result, option C is the proper response.

Learn more about circle here:

brainly.com/question/16403495

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