A dendrite conducts nerve impulses ______ the cell body.

1 answer:

5 0

A dendrite conducts nerve impulses towards the cell body. A dendrite is something like a small branch of a tree in our nervous system. It goes from a nerve cell and conducts an impulse from other cells towards cell body. This is basically how all electrical impulses are transmitted and the easy way to examine this is by touching something since it can easily be proven with the sense of touch.

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DNA extraction is a useful technique for scientists because it can be used _____. A. to see the nuclei of cells B. to absorb vir

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DNA comprises the genetic makeup of every organism. It carries genetic information that is used by the organs in the body to determine what functions to carry out.

DNA cannot be used to see the nuclei of cells or absorb viruses. A person's personality cannot be determined from DNA.

The answer is D. to determine if people are related, as DNA between two people can be compared for similarities of code between the two.

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DNA replication is Group of answer choices conservative. a one-step process. semi-conservative. not carried out by enzymes. not

Alex787 [66]

Answer:

The correct answer is: semi-conservative.

Explanation:

DNA replication is an important process in which the DNA is duplicated before cell division so each daughter cell can have a copy of genetic material.

DNA replication is semi-conservative because one strand of DNA is new and the other one is the old strand. To replicate itself, the DNA double helix is opened, and then each strand serves as a model for the new strands.

DNA replication is not a one-step process, as it takes several complicated steps in which lots on enzymes participate (like DNA polymerase and DNA helicase).

DNA replication is also carried by prokaryotic cells, though it's a much simpler process.

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3 years ago

if you pour 50 ml of orange juice from a pitcher into a glass a. the shape and the volume of the orange juice change. b. the sha

Mrac [35]

Answer is C; volume stays the same (always) but the shape will change (to take of the space of the container).

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Choose the correct sequence of the prokaryotic operon. A) gene, operator, promoter B) promoter, operator, gene C) operator, prom

Harrizon [31]

Answer:

The correct answer is option B, that is, promoter, operator, gene.

Explanation:

In a prokaryote, just in front of the operator, the promoter is located, and just in front of the structural genes, the operator is located. All these in combination give rise to an operon.

Any gene, which codes for an enzyme or a structural protein is termed as a structural gene, in the lac operon, a structural gene codes for three distinct kinds of enzymes. A short sequence of DNA is situated just in front of the structural gene, which is known as the operator. An operator functions as a switch for transcription, that is, it monitors whether the process of transcription will take place or not.

Just in front of an operator, a sequence of a promoter is present, and for the transcription and translation of all the structural genes, the RNA polymerase needs to combine first with the promoter. In case, if no transcription is to take place, then the operator allows the repressor to bind with it and prevent the attachment of RNA polymerase with the promoter. Hence, the correct sequence of a prokaryotic operon is a promoter, operator, and gene.

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True or False Questions: 1. When a cell is put into an isotonic solution, individual water molecules cannot move back and forth

lord [1]

1.) It is True that when a cell is put into an isotonic solution, individual water molecules cannot move back and forth across the cell membrane.
2) It is False that a when a cell is put into a hypertonic solution, there is a net movement of water molecules across the cell membrane into the cell.
3) It is True that when a cell is out into a hypotonic solution, there is net movement.
4) It is False that the movement of any solvent across a semi-permeable membrane is called osmosis.

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