1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
IgorLugansk [536]
3 years ago
8

What are immortal cell lines and why are they important for cell research? (APEX diversity in science ws)

Biology
1 answer:
Step2247 [10]3 years ago
3 0
Immortal cell lines are a powerful tool for the biological investigator to research the biochemistry and cell biology of multicellular organisms, which plays an important role in the study of the biology of cell growth, differentiation, and senescence.
You might be interested in
I don't what it wants me to answer, if you understand it please help​
Over [174]

Hello!

An initial observation is the first thing a scientist notices about a topic before conducting the experiment. We can see that it is the first thing in the paragraph in this case, that dandelions grow as unwanted weeds in many lawns.

The hypothesis is the guess about the result of an experiment made before the experiment is conducted. In this case, it is that a weed killer (Killimal) would kill all the dandelions while leaving the grass healthy. This is not specifically a guess made by the scientist, but more like a prediction he wanted to verify.

An independent variable is the variable being changed in the experiment by the scientist. Here, it is whether Killimal was sprayed or not.

The dependent variable is the variable being measured, and the one being affected by the independent variable. His observation would be whether the grass and dandelions would be killed. This is because the weed killer would be directly affecting whether or not these would be killed.

The control variables are ones which are kept the same in the experiment as to not interfere with the final results. In this case, it would be the density of dandelions, the amount of sunlight, and the amount the plants were watered. These were kept exactly the same, as they could've affected the dependent variable if changed.

The control group was the one that is not impacted by the independent variable. The control group makes sure that it actually is the independent variable affecting the dependent, and it isn't some outside unknown variable. This would be the plot without the Killimal.

The experimental group is the one being experimented on from the independent variable. This would be the plot with the Killimal.

Hope this helps!

8 0
3 years ago
Which of the following is a layer of the solid Earth?
stich3 [128]
A. Converting Mantle
3 0
3 years ago
Read 2 more answers
What do you think would happen if a genetic mutation caused a person's digestive tract to have stratified columnar epithelium in
Eddi Din [679]

Answer:

Absorption and secretion would be impossible within the digestive tract.

Explanation:

Epithelium is one of the tissues found in humans. It is classified as either simple or stratified depending on the number of cell layers. Simple epithelial tissues have one layer of cells while stratified have many layers of cells. Based on the shape, epithelial tissues can either be squamous, columnar or cuboidal.

Due to the single-layer of the simple epithelial tissues, they line the walls of secretory or absorptive organs e.g organs of digestive tract. The stratified epithelium is majorly for protective function due to the number of cell layers it possess and not a good type of epithelium for locations where absorption and secretion of substances is common e.g digestive tract.

Hence, if a genetic mutation causes a person's digestive tract to have stratified columnar epithelium instead of simple columnar epithelium, ABSORPTION AND SECRETION of chemical substances, which is a key feature of organs (stomach, intestine) that make up digestive tracts, will be impossible.

8 0
3 years ago
Which process is an important part of chemical weathering through oxidation?
Aliun [14]

Answer:

The process that is an important part of chemical weathering through oxidation is oxygen giving up electrons to other elements

5 0
3 years ago
Locomotion in Metazoa is usually due to the contraction of what? a. Skeleton b. Muscle c. Skin d. Nerves
Ede4ka [16]

Answer: b. Muscles

A metazoa is a division of animal kingdom that includes all animals expect protozoa and sponges. Metazoa division includes multicelluar animals, which exhibit highly differentiated cells. They have muscular and nerve system and well coordinated tissues and organs. Locomotion requires a coordination activity of muscular, skeletal and neural system. It is mainly achieved by contraction and relaxation of muscles that occurs due to specialized muscle proteins named as actin and myosin which receives signals from nerves.

Hence, locomotion in metazoa is due to contraction of muscles.

7 0
3 years ago
Other questions:
  • Why are scientists most likely working on developing cleaner-burning fuel for cars?
    7·2 answers
  • Disturbances inside Earth’s core cause earthquakes. The starting point of the disturbance is called the epicenter. Why does the
    14·1 answer
  • Please answer any you can!
    6·1 answer
  • Hyperpolarization means that the ________. membrane potential becomes slightly more negative than the resting potential membrane
    6·2 answers
  • 1. Imagine that there had been a rocket big
    11·1 answer
  • What kind of atom tends to lose one electron?
    6·1 answer
  • A major distinction between prokaryotes and eukaryotes is the presence of membrane-bound organelles in eukaryotes.
    10·1 answer
  • What is the function of cellulose in plants
    14·2 answers
  • ...............................
    9·1 answer
  • Question 1 (4 points)
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!