A controlled experiment is one thata. proceeds slowly enough that a scientist can make careful records of the result.
b. tests experimental and control groups in parallel.
c. is repeated many times to make sure the results are accurate.
d. keeps all variables constant.

Answers

Answer 1

Answer:

The correct answer is B. Tests experimental and control groups in parallel

Explanation:

In science, a controlled experiment is a type of experiment in which scientist intervene or manipulate variables. This often implies scientists use a control group in which the variable is constant and an experimental group that has a different treatment or changes in the variable studied. This allows scientists to evaluate the effect of the variable by comparing the results of both groups and thus confirm or discard a hypothesis. Therefore, a controlled experiment can be defined as on that "tests experimental and control groups in parallel".

Answer 2

Answer:

Final answer:

A controlled experiment is one that tests experimental and control groups in parallel, with all other variables kept constant. This enables the scientist to observe the impact of a single variable.

Explanation:

A controlled experiment is one that can be defined as an experimental set up in which the scientist keeps all variables constant, except for the one being studied. The correct option here would be option 'b'. Such an experiment tests experimental and control groups in parallel.

This methodology allows the researcher to observe the effect of one variable on the study subject while ensuring that all other conditions remain the same. For example, if you were to experiment with plant growth, you might keep factors like sunlight, water, and type of soil constant while changing the type of fertilizer used.

Learn more about Controlled Experiment here:

brainly.com/question/37677936

#SPJ6

Related Questions

To determine whether the mutations in the seven strains leading to the wingless phenotype are in the same gene, your lab sets up complementation tests. You obtain the following results (" " indicates that complementation was observed; "-" indicates that no complementation was observed).
You are given a sample of unknown cells to examine. Analysis of their nuclei reveals that each cell contains 23 chromosomes. What types of cells might these be?a. Ovab. skin cellsc. liver cellsd. white blood cells
Minos, king of Crete, had made war upon Athens. He had come with a great fleet of ships and an army, and had burned the merchant vessels in the harbor, and had overrun all the country and the coast even to Megara, which lies to the west. He had laid waste the fields and gardens round about Athens, had pitched his camp close to the walls, and had sent word to the Athenian rulers that on the morrow he would march into their city with fire and sword and would slay all their young men and would pull down all their houses, even to the Temple of Athena, which stood on the great hill above the town. Then Aegeus, the king of Athens, with the twelve elders who were his helpers, went out to see King Minos and to treat with him.–“The Cruel Tribute,”James BaldwinWhich detail from the passage creates the most suspense for the reader?“Minos, king of Crete, had made war upon Athens.”“He had laid waste the fields and gardens round about Athens.”“Then Aegeus, the king of Athens . . . went out to see King Minos and to treat with him.”
3. Choose the odd one out from each group and give reasons(a) liver, salivary gland, starch, gall bladder (b) stomach, liver, pancreas, salivary gland
Help me please , easy 10 points ... just look at the picture & answer the question.

The discovery, characterization, and the application of the CRISPR/CAS system has revolutionized the study of genetics and genetic engineering. Please select all correct answers regarding its mechanism of action and application. Multiple correct answers are possible, and partial credit will be given.A. CRISPR sequences in bacteria resemble those from bacteriophage and plamid DNA.
B. For reverse genetics studies, CRISPR/CAS can be used to replace wildtype alleles with mutant alleles which can knockout the function of the target genes.
C. CRISPR is a DNA sequence in the bacterial chromosome.
D. The guide RNA directs CAS to specific DNA sequences.
E. The CRISPR/CAS system was discovered in bacteria, and its natural function is the equivalent of an immune system in bacteria for "remembering" viral infections and for attacking viral DNA in future infections.

Answers

Answer:

A. CRISPR sequences in bacteria resemble those from bacteriophage and plasmid DNA. (The CRISPR sequences are derived from previously invading bacteriophages and pladmids.)

B. For reverse genetic studies, CRISPR /CAS can be used to replace wild type alleles with mutant alleles which can knock out the function of target genes. (CAS 9 introduces double strand break (DSB) in the target sequence which is then repaired by non homologous end joining (NHEJ). NHEJ causes deletion, insertion or frame shift mutation leading to knock out of the target genes.)

C. CRISPR is a bacterial sequence in the bacterial chromosome. ( The sequences are derived from bacteriophages that had infected the bacteria defore.)

D. The guide RNA guides CAS to specific DNA sequences. ( The guide RNA directs CAS nuclease to the target sequences for editing.)

E. The CRISPR/CAS system was discovered in bacteria, and it's natural function is the equivalent of an immune system in bacteria for remembering viral infections and for attacking viral DNA in future infections. (The CRISPR/CAS system provides acquired immunity to bacteria.)

Explanation:

see answer

You are an aspiring botanist and decide to study some orchid genetics. Knowing that the pink color phenotype is an incompletely dominant phenotype, you decide to study it further. You discover that when you cross two pink orchids, you only ever obtain a phenotypic ratio of 1/3 white orchids to 2/3 pink orchids. How might you explain this phenomenon

Answers

A)The dominant color allele produces a lethal phenotype when one copy is present. B)The recessive color allele produces a lethal phenotype when two copies are present. C)The dominant color allele produces a lethal phenotype when two copies are present. D)The recessive color allele produces a lethal phenotype when one copy is present

Answer:

C)The dominant color allele produces a lethal phenotype when two copies are present.

Explanation:

Let's suppose that allele R gives a pink phenotype in the heterozygous condition while the allele r gives white phenotype in the homozygous genotypes. So, the genotype of the pink orchids would be Rr. A cross between two Rr plants obtain progeny in following genotype ratio:

1/4 RR: 1/2 Rr: 1/4 rr

Here, the R allele is lethal in homozygous genotypes and the progeny ratio become=

1/3 white: 2/3 pink

One example of a stored-value card is a(n) *A. Credit Card
B. Debit Card
C. Gift Card
D. Identification Card

Answers

Answer:

credit card

Explanation:

Answer:

$\boxed{Gift\:Card}$

Explanation:

They are commonly used as transit cards for example gift cards and cafeteria cards.

Hope it helps!<3

Which particles do plants absorb to obtain energy

Answers

Answer:The molecules of chlorophyll contained in the chloroplasts absorb energy in the form of light from the sun. Some plants need more sunlight than others, but all need at least a little. Instead of taking in oxygen and breathing out carbon dioxide like animals do, plants take in carbon dioxide from the atmosphere......thank you.have a great day

In the anabolic pathway for proteins, how is excessive protein stored?

Answers

In the anabolic pathway for proteins, excessive protein is stored in the form of fat. The main purpose of the anabolic pathways is to synthesize molecules and this requires energy. I hope that this is the answer that you were looking for and the answer has actually come to your desired help.

compare and contrast the process of replication between the alien sample and eukaryotic life found on earth

Answers

Answer:

The answer is "Mode of replication".

Explanation:

The answer is the model for reproduction because it is the genetic reproduction implements a diffraction model, which replaces some old bases with other small colonies for each strand of the fetus, opposed to a semiconservative model of reproduction in eukaryotic cells, wherein one chromosome is completely new and one is old.

Final answer:

Replication in both eukaryotic life and an alien sample would involve the duplication of genetic information, but the specifics could vary. For instance, while eukaryotes use DNA and replication is bi-directional, the alien sample might use RNA and replication could be uni-directional. These are, however, speculative based on our understanding of life on Earth.

Explanation:

In both the eukaryotic life found on Earth and in the hypothetical alien sample, processes of replication would involve the duplication of DNA, which serves as the basis for passing genetic information from one generation to the next. In eukaryotes, this process is accomplished via DNA replication, a bi-directional process in which the DNA helix is unwound and each strand is used as a template for the synthesis of a new complementary strand.

In contrast, we can speculate that the alien sample might have biochemical differences that influence its DNA replication process. The alien sample, for instance, could utilize RNA instead of DNA as the main carrier of genetic information. Its replication process might also proceed in a uni-directional manner, which is contrary to the bi-directional process in eukaryotes. Nevertheless, these differences are more conjectural since we don't have a specific example of extraterrestrial life to examine.