All categories

2 years ago

The cells in a certain part of a plant form tubes. What is the most likely

Biology

2 answers:

zmey [24]2 years ago

5 0

These tubes are xylem and phloem which help in the transportation of water and nutrients as well as the transport of food so C

Elena L [17]2 years ago

4 0

C. So it can travel from one part to another

You might be interested in

Genes contain intruction for assembling what

pochemuha

Answer:

amino acids into proteins

Explanation:

Most genes contain instructions for assembling amino acids into proteins,which the proteins are also helping ribosomes.

5 0

3 years ago

. Your lab technician was to determine the ash content of buttermilk by conventional dry ashing. The technician weighed 5 g of l

expeople1 [14]

Answer:

Ashing process is done to evaluate the ash content present in petroleum or other proucts, so that they can be used for certain applications

The two major types of ashing process that includes dry ashing and wet ashing and can be performed using microwave systems or conventional means.

a. errors made in the preceding method while determining the ash content of buttermilk by conventional dry ashing are as following:

Buttermilk should not immediatly put into muffle immediatley, it should be boiled first to avoid splatter.
Temperature should be between 500 to 600 degree celcius at high temperature teh ash content can be loss.
The sample should be ashed for 12-18 hrs , more than this can damage the required ash content.
platinum tip should be used in place of stainless steel because platinum has a lower concomitant tip impedance than stainless stell, so less reactive to ash.
The ash should put in dessicator and not allow to kept in open because ash can react with the humidity in teh atmosphere.

b. The result that occur due to above errors such as the temperature, time, tongs and leaving ash in open will manipulate the final ash content and its application can be harmful for humans and for other purpose if it will be used.

5 0

3 years ago

During which stage of a cell's cycle do the replicated chromosomes thicken and become visible?

trasher [3.6K]

Answer:

Prophase

The replicated chromosomes thicken and become visible as separate chromosomes during prophase stage of mitosis. :)

6 0

3 years ago

Read 2 more answers

4- Jamie does an experiment. She charges a pencil by rubbing it with a piece

lyudmila [28]

Answer:

More info given below.

Explanation:

This attraction occurs as a result of static charge. You see an atom is referred to as the smallest particle of a substance; and when an atom gains or looses electrons it becomes unstable creating a difference in potential. However in this case rubbing induces friction which induces heat. This heat excites the atom to loose electrons creating a negative charge on the silk and a converse positive charge on the pencil.

3 0

3 years ago

The anterior portion of the body of most annelids, such as the earthworm, is adapted for sensing the environment.

Diano4ka-milaya [45]

Answer:

The answer is False. Although sensitive cells are more abundant in the anterior portion of the annelid´s body, in general, they are arranged in all the segments.

Explanation:

Annelids, such as the earthworm, have a variety of sensory cells:

Mechanoreceptors, disposed of in groups in each segment of their body.

Photoreceptors: Light-sensitive cells. Although they are located in the whole body, they are abundant in anterior and posterior segments, concentrated in the intern and dorsal part of the epidermis.

Humidity receptors are the most sensitive cells and are located in the first segments of the earthworm body

Chemoreceptors: sensorial cells cumulus forming a prominent tubercle with prolongations that extends through the cuticle. These tubercles form three rings in each segment but are especially abundant in the anterior part of the body.

The tegument is very rich in free nervous terminations, which functions might be tactile.

6 0

3 years ago