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Korolek [52]
3 years ago
7

The presence of which of the following characteristics differentiates prokaryotic and eukaryotic cells?

Biology
1 answer:
ipn [44]3 years ago
8 0

Answer:

The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not.

Prokaryotic Cell

Unicellular

Lysosomes and Peroxisomes absent

Microtubules absent

Endoplasmic reticulum absent

eukaryotic Cell

Multicellular

Lysosomes and Peroxisomes present

Microtubules present

Endoplasmic reticulum present

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Anestetic [448]
Yes, They make rapid chirps if it's warmer
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3 years ago
2. Which of the genotypes listed above would provide the strongest evidence that the alleles for blood type are co-dominant? Ple
Ket [755]

Answer:

AB

Explanation:

Blood group is discovered by famous scientist Karl Landsteiner in the year 1990. Co-dominance is the expression of the two alleles in the heterozygotes. In AB type, the two different alleles are present and they are expressed.

However in ABO type, it is govern by three allele namely A, B and O type. If only the antigen A is present, it is called A blood type. When only B antigen is present it is called B blood type and when both A and B are present, it is called AB blood type. And if neither of the antigen are present, it is called the O blood type.

The allele O is of recessive to both the blood type A and B. So a person with O blood type have two copies of O allele. But however A and B blood type are dominant of O, a person with A blood type may have one of the two genotypes --  AO or AA. Similarly, with blood type B, the genotypes are BO or BB.

3 0
3 years ago
When using a compound light microscope the most common reason for staining a specimen being observed is to?
sweet-ann [11.9K]
Yes they are both being observed
5 0
3 years ago
Please help me!!!! 40 points
Andreas93 [3]

Answer:

A. aneuploidy; trisomic

Explanation:

Aneuploidy means having more numbers of chromosomes than usual while polyploidy means having an abnormal number of chromosome sets. Down syndrome is a trisomy on chromosome 21 meaning there are 3 chromosomes for chromosome set 21.

7 0
2 years ago
Read 2 more answers
Which of the following is an example of a negative feedback loop? Select one: a. Uterine contractions to expel a fetus during la
PtichkaEL [24]

Answer:

d

Explanation:

<em>The correct answer would be increasing heart rate to compensate for low cardiac output.</em>

The negative feedback loop is the mechanism that is utilized in the maintenance of homeostasis. They work by opposing the processes that bring about a deviation away from setpoints, that is, the normal range of operation of physiological processes in the body.

<u>For example, when the heart rate goes below the setpoint, the negative feedback loop swings into action through the sensor, the control center, and the effector to return the heart rate to the normal operating range.</u>

Correct option: d

6 0
3 years ago
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