In the hershey-chase experiment, what was labeled by growing bacteriophage in 32p-containing medium?

1 answer:

8 0

Hershey and Chase Experiment
Why are radioactive isotopes a valuable tool in molecular biology? Molecular biology mostly takes place on a scale too small to be directly observed by researchers. While cells, organelles, and even macromolecules can be visualized with high-powered microscopes, the molecular processes that drive biology cannot be seen and need to be inferred from experiments. Radioactive isotopes are versions of elements such as carbon, nitrogen, or phosphorus that unstable and release neutrons to become more stable isotopes. The radioactive signal given off by the emission of neutrons allows scientists to detect the isotopes even when they cannot be seen. Adding isotopes to biological systems allows scientists to trace both molecular pathways and the locations at which these pathways occur.

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Why do people with ADHD/ADD have to take pills to stay focus??? How do those pills work and is there another solution besides ta

ExtremeBDS [4]

Answer:

Explanation:

ADHD pills make you focus more, be less hyper and pay attention to things more.Some side effects are suppression of appetite, moodiness and headaches. Solutions besides taking pills are paying attention, getting restful sleep, improving nutrition.

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3 years ago

How are tissues distributed in a plant root?

Pepsi [2]

Answer:

Explanation:

A root has an outside layer, the epidermis, and a central cylinder of a vascular tissue. Between these two tissues lies a large area of ground tissue.

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3 years ago

The antibody-containing portion of blood fluid is known as ____. macrophage

Vlad [161]

The answer is the blood plasma.
Antibodies are specialized proteins that travel through the blood stream and are found in bodily fluids. They are used by the immune system to identify and defend against foreign intruders to the body. Blood plasma contains proteins, salts and minerals, it serves a variety of functions including maintaining a satisfactory blood pressure and volume to supplying critical proteins for blood clotting and immunity.

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4 years ago

Worms move using an hydrostatic skeleton. How do worms move?

Nadusha1986 [10]

Answer:

The correct answer is B. Worms move through changes in body structure caused by contraction of muscles compressing their watery fluid.

Explanation:

The hydroskeleton consists of a fluid-filled cavity, surrounded by muscles. The fluid pressure and the action of the muscles that border it, serve to change the body's shape and produce a movement such as digging or swimming. The successive contraction of various metamers, which are provided with bundles of circular and longitudinal muscle fibers, stretching and thickening parts of the body, allow it to move horizontally. Hydrostatic skeletons have a role in the locomotion of annelids, nematodes and other invertebrates. The hydroskeleton has similarities with the hydrostatic muscles.

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4 years ago

A jellyfish is a type of cnidarian, a squid is a type of mollusk, and a dolphin is a type of vertebrate. Which two characteristi

bulgar [2K]

Jellyfish do not have a central nervous system.

Squids which belongs to Cephalopoda (class of Mollusca) have the most complex nervous system of the invertebrates. They have well-developed senses and large brains. So, they are considered as the most intelligent of the invertebrates.

Dolphins, on the other hand, are regarded as one the most intelligent animal.

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3 years ago