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3 years ago

How do you change the objective lenses?

Biology

2 answers:

irakobra [83]3 years ago

8 0

Answer:

When focusing on a slide, ALWAYS start with either the 4X or 10X objective. Once you have the object in focus, then switch to the next higher power objective. Re-focus on the image and then switch to the next highest power.

Explanation:

Marta_Voda [28]3 years ago

4 0

Answer:

<em>When focusing on a slide, ALWAYS start with either the 4X or 10X objective. Once you have the object in focus, then switch to the next higher power objective. Re-focus on the image and then switch to the next highest power.</em>

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Which three structures are found in both prokaryotic and eukaryotic cells?

Lana71 [14]

Answer:

Both prokaryotic and eukaryotic cells have structures in common. All cells have a plasma membrane, ribosomes, cytoplasm, and DNA. The plasma membrane, or cell membrane, is the phospholipid layer that surrounds the cell and protects it from the outside environment.

Explanation:

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3 years ago

Red flowered snapdragons are crossed with white flowered, producing all pink snapdragons in the F1. What would you expect if you

Minchanka [31]

Answer:

It probably get pink because it has 1/2 chance it has 1/4 change of being white and 1/4 chance of being red

Explanation:

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3 years ago

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What is gene flow and what is an example ?

Natali [406]

In population genetics, gene flow (also known as gene migration or allele flow) is the transfer of genetic variation from one population to another. ... In some cases migration may also result in the addition of novel genetic variants to the gene pool of a species or population.

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3 years ago

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If a pea plant that is herterozygous for rounds, yellow peas is crossed with a pea plant that is homozygous for round peas but h

Keith_Richards [23]

Answer: There re two different types of phenotypes in the offsprings that is Round yellow and Round green.

Explanation-

As per the Mendelian inheritance, Round shape and yellow color of pea are dominant over wrinkled shape and green color of pea.

According to the question, genotypes of parents are- RrYy ( heterzygous for round and yellow) and RRYy ( homozygous for round and heterozygous for yellow).

The first parent can produce four different gametes that is RY, Ry, rY, ry whereas the second parent will produce only two types of gametes that is RY and Ry.

When they are crossed, they will produce two different phenotypes in the offsprings.

Refer punnett square.

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3 years ago

“the contraction and relaxation of skeletal muscles moves bones” is this related to A.circulatory B.respiratory C.Muscular

Karolina [17]

Answer:

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