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
lions [1.4K]
2 years ago
13

Distinguish between manipulative experiments and natural experiments.

Biology
1 answer:
GuDViN [60]2 years ago
6 0
Manipulative experiments alter levels of a predictor variable (or factor), and then measures how one or more variables respond to these alterations. ... Natural experiments-An observational study in which we take advantage of natural variation that is present in the variable of interest.
You might be interested in
A contracting skeletal muscle fiber typically shortens as all of its ______ shorten in length.
Genrish500 [490]

Answer:

 sarcomeres

Explanation: A contracting skeletal muscle fiber typically shortens as all of its sarcomeres do this.... Thick and thin protein filaments in sarcomeres interact to cause.... True or false, thick and thin filaments maintain their same length whether the muscle is relaxed or contracted?

8 0
2 years ago
N the early 1900's a scientist hypothesized a link between DNA and the production of proteins in the cytoplasm. However, the fac
Dovator [93]

The plasma membrane or the cell membrane is the one that protects the cytoplasm of a cell. It is mostly composed of lipids and proteins. It has a phospholipid bilayer that controls the entering and exiting of molecules in the cell and at the same time, provides protection for the cell or plasma membrane. It has polar head and a nonpolar tail. Proteins embedded within the phospholipid bilayer have the same function of the plasma membrane that includes selective transport. The phospholipid bilayer consists mainly of the lipid molecules.

7 0
3 years ago
Which is NOT a kingdom?
algol13

Answer:

E all of these are kingdoms

Explanation:

they just are? I dunno how to "explain" a yes or no thing.

7 0
2 years ago
What effect does exercise have on cellular respiration?
vovikov84 [41]

Answer:

it's C

Explanation:

keneeenenjeejweness

7 0
2 years ago
Why would tissue from the fetal stage of human development be used to look at mitosis?
WITCHER [35]
Mitosis is the process of cell division, where one parent cell divides to produce two genetically identical daughter cells. This process is vital in growth and tissue repair. 
The reason that tissue from the fetal stage is helpful in studying mitosis is because mitosis is continuously and rapidly occurring in this phase of life in humans. The high rate of mitosis is due to the need for the fetus to grow rapidly and develop the necessary parts for it to be born.
8 0
3 years ago
Other questions:
  • The nurse is caring for an older adult client who has a hemoglobin of 9.6 g/dl and a hematocrit of 34%. to determine where the b
    6·1 answer
  • How is protein synthesis different from DNA replication?
    11·1 answer
  • What is the three cells found in the dermis​
    9·2 answers
  • Can you think of a real-life example of how man-made pollution affected a real ecosystem, its abiotics (e.g. temperature, water
    15·2 answers
  • Dallon's theory states that atoms are the smallest possible parts of elements. In a chemical reaction ,atoms will
    5·2 answers
  • Help asap giving branlist!!!!!
    11·1 answer
  • what would have happened if we had cut both the jellyfish glo gene and puc18 plasmid with the EcoR1 restriction enzymes
    15·1 answer
  • DNA and RNA are examples of what?<br> A. Nucleic Acids<br><br> B. Lipids<br><br> C. Carbohydrates
    6·2 answers
  • 1. What are the characteristics of fiber? (Select all that apply.)
    12·1 answer
  • Https://onmuga.com/drawitout/8XO4EJ
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!