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3 years ago

The effect that toxins have on a body depends on which of the following?

2 answers:

4 0

The answer is All of these for mutagens cause changes (mutations) in the genetic material of cells. Teratogens cause irreversible, deleterious structural malformations in fetuses. Carcinogens cause cancerous tumors with a characteristically crablike appearance.

zlopas [31]3 years ago

3 0

The right answer is D.

The 3 are effects that the toxin can have on an organism.

A mutagenic toxin is capable of producing mutations in living organisms (eg 5-bromo-uracil).

A cancerogenic toxin is able to cause or promote cancer in an individual who consumes it (example: benzene).

A teratogenic toxin can produce congenital malformations, ie when a pregnant woman consumes this toxin, the new born may have a malformation at birth (example: thalidomide).

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Seeds contain dense aggregates of starch. what role does water play in how the seeds use the stored starch?

jenyasd209 [6]

Water is needed to break the hydrogen bonds in the starch aggregates, allowing ready access to stored energy.

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3 years ago

Number________ is the chloroplast. The chloroplast helps the plant obtain food by__________.Number _____________ is the central

stepan [7]

Answer:

Number 3 is the chloroplast. The chloroplast helps the plant obtain food by photosynthesis. Number 1 is the central vacuole. The central vacuole helps a plant maintain its structure by turgor pressure.

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2 years ago

Continuous rotation of the CT x-ray tube and detector array, with simultaneous movement of the CT couch, has been accomplished t

Andrei [34K]

Answer:

The options

A. Additional cables

B. Slip rings

C. Multiple rows of detectors

D. Electron beam CT.

The CORRECT ANSWER IS B.

B. Slip rings

Explanation:

During the 1990s, the use of slip ring technology promoted consecutive rotation of the x-ray tube (via removal of cables) and concurrent couch locomotion.

The Sixth-generation CT scanning is referred to as helical (or spiral) CT—allowing procurement of volume multislice scanning.

Today's helical multislice scanners, makes use of thousands of detectors (around 60+ rows), can derive continuous data procurement of 128 "slices" per tube rotation and can undergo 3D multiplanar reformation (MPR).

Fifth-generation CT employs electron beam; as the ultra high-speed CT is employed majorly for cardiac imaging.

3 0

3 years ago

When light is pulled into an object, this is ____?

timama [110]

Answer:

absorption

Explanation:

3 0

2 years ago

A biochemist isolates and purifies various molecules needed for DNA replication. When she adds these molecules to DNA, replicati

olga55 [171]

Answer:

DNA ligase

Explanation:

The biochemist must have left out DNA ligase enzyme.

The DNA ligase enzyme is able to catalyze the formation of phosphodiester bonds and as such, capable of joining strands of DNA together to form a single strand.

The numerous DNA segments of a few nucleotides long observed by the biochemist must have been the replicated product of the lagging DNA strand. The lagging strand is replicated discontinuously in short strands because the DNA polymerase enzyme can only elongate primers in 5' to 3' direction. The short segments are known as Okazaki segments and are usually joined together to form a whole strand by the DNA ligase enzyme.

Hence, the missing component is the DNA ligase.

3 0

3 years ago