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Alja [10]
3 years ago
15

How many variables are changed in a controlled experiment

Biology
1 answer:
Snowcat [4.5K]3 years ago
8 0

Answer:

One

Explanation:

In a controlled experiment only one variable is changed at a time, while the others are kept the same/controlled so changes can be observed and a causation can be determined.

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what do some of your cells do to keep facilitated diffussion operating while transferring glucose into the cell?
Shkiper50 [21]
Glucose is a six-carbon sugar that is directly metabolized by cells to provide energy. The cells along your small intestine absorb glucose along with other nutrients from the food you eat. A glucose molecule is too large to pass through a cell membrane via simple diffusion. Instead, cells assist glucose diffusion through facilitated diffusion and two types of active transport
8 0
4 years ago
Read 2 more answers
What are the most likely percentages for offspring of two red/white-feathers parents?
weeeeeb [17]

Answer:

The question lacks options, the options are:

parents?

A.100% red/white-feather chickens.

B.50% white-feather chickens and 50% red/white-feather chickens.

C.33% white-feather chickens, 33% red-feather chickens, and 33% red/white-feather chickens.

D.25% white-feather chickens, 25% red-feather chickens, and 50% red/white-feather chickens

The Correct answer is D

Explanation:

According to the question, the hybrid chicken has a mixture of red and white feather phenotypes expressed at the same time. This tells us that the red and white alleles are CODOMINANT in the chicken i.e. none is dominant or recessive over the other.

Let's assume that (R) allele is the red feather colour while (r) allele is for white feather colour. Therefore, the red/white feathered chicken will have a Rr genotype. In a cross between two red/white feathered chicken (Rr), the following offsprings will be produced RR, Rr, Rr and rr

RR- Homozygous red feather d chicken (1/4 × 100=25%)

Rr- Hybrid Red/White feathered chicken (2/4 × 100=50%)

rr- Homozygous white feathered chicken (1/4 × 100=25%)

8 0
3 years ago
Which of the following shows the correctly transcribed mRNA for the DNA strand below?
max2010maxim [7]

Explanation:

your answer would be GAC.

4 0
3 years ago
1. What process happens in the mitochondria?
slamgirl [31]

Answer: The process is called oxidative phosphorylation and it happens inside mitochondria.

Explanation:

5 0
3 years ago
What is the difference between osmosis and diffusion
Sedbober [7]
One big difference between osmosis and diffusion is that both solvent and solute particles are free to move indiffusion, but when we talk aboutosmosis, only the solvent molecules (water molecules) cross the membrane. ... When people discussosmosis in biology, it always refers to the movement of waters
8 0
4 years ago
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