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Diano4ka-milaya [45]
3 years ago
5

What are 3 things that should be kept constant in a experiment?​

Biology
2 answers:
Alina [70]3 years ago
6 0

Answer:

Controlled or Constant variable

Explanation:

It does not change. For example, in an experiment to test the effect of different lights on plants, other factors that affect plant growth and health, such as soil quality and watering, would need to remain constant.

weqwewe [10]3 years ago
3 0

Answer:

There must be an independent variable, which changes throughout the course of an experiment; a dependent variable, which is observed and measured; and a controlled variable, also known as the "constant" variable, which must remain consistent and unchanging throughout the experiment.

Explanation:

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State the trophic level of each of the following: cow: ______________________ grass: _____________________ man: ________________
Viktor [21]

Answer:

The cow is a Primary Consumer since it feeds off the Grass.

The grass is a Producer since it's an autotroph (Can make its food through Photo synthesies. )

The Mushroom is a decomposer since it's a fungus.

And lastly, the man would be a Tertiary consumer since most of us are omnivores.

4 0
2 years ago
What process increases genetic variation
Gnoma [55]

Answer:

Crossing Over

7 0
3 years ago
Proteins on the surface of vesicles determine where the vesicles go. Which cell organelle provides the instructions for these pr
yanalaym [24]

Answer:

D. Nucleus.

Explanation:

A cell can be defined as the structural, fundamental, biological and functional unit of life. Cells are found in all living organisms because they are the basic unit of life. A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.

Some examples of cell organelles found in all living organisms such as trees, birds, and bacteria include; nucleus, cytoplasm, cell membrane, golgi apparatus, mitochondria, lysosomes, ribosomes, chromosomes, endoplasmic reticulum, vesicles, etc.

Proteins on the surface of vesicles determine where the vesicles go.

The nucleus is the cell organelle which provides the instructions for these proteins. It controls all the activities taking place in the cell and the synthesis of proteins.

6 0
3 years ago
Which of the following describes the embryonic period
dangina [55]

There should be options for this question. I manged to find them elsewhere. They are:

A) the period during which tremendous growth occurs and the organs continue to develop and become  functional

B) the period during which the umbilical cord develops

C) the period during which the major organs and structures of the organism first develop

D) the period during which the zygote moves down to the uterus and begins to implant in the lining

The correct answer is C. The embryonic period is the period during which the major organs and structures of the organism first develop. The embryonic period lasts from implantation of the egg in the uterus until about 8 weeks from the time of conception. It is the second major stage of prenatal development, prior to embryonic is the germinal stage and lastly is the fetal stage.

8 0
3 years ago
All living things need to transport molecules from one place to another within the body in order to carry out necessary life fun
mojhsa [17]

Answer: Water as a universal solvent

Explanation:

Water is a universal solvent because of its property of dissolving a large number of molecules of different kind.  The water at the biological level forms the major body weight of the organisms. It helps in supporting the cell metabolism and function. It is the main component of the liquid component of blood that is plasma. The water dissolved in it various vitamins, minerals, fibers, and other components of the food and helps in digestion of food in the body. Thus in human and animal body water plays an important role in circulation and digestion process.

3 0
3 years ago
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