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Umnica [9.8K]
3 years ago
6

Which of the following statements is true for a eukaryotic cell?

Biology
1 answer:
xeze [42]3 years ago
8 0
Possesses the characteristic of compartmentalization  of organelles,wherein the organelles are bound by membranes 
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Monosaccharides are generally defined by what to hydrogen to oxygen ratios?
Thepotemich [5.8K]
I believe it is a 2:1 ratio of hydrogen to oxygen, because the way i learned was that carbon hydrogen and oxygen have a ratio of 1:2:1, respectively.
6 0
3 years ago
Explain how natural forces and human effects affect the observed global temperature (black line) in graph 2. Is solar radiation
Anon25 [30]

Answer:

Natural forces don’t have a strong effect on recent global temperatures. The natural forces line begins to drop around 1950 and does not track with the observed temperature line. On the other hand, the human effects line rises upward with the observed temperatures, so it’s a stronger effect. Solar radiation falls into the category of natural forces.

Explanation: This is the exact answer so I recommend changing it up a little bit. :)

6 0
2 years ago
Read 2 more answers
How does nerve impulses travel from one neuron to another?
olga2289 [7]

Answer:

(d) Electrical-->Chemical-->Electrical

Explanation:

A nerve impulse is the transmission of an electrical change along the neuron's membrane from the point at which it is stimulated (synapse). The normal direction of impulse in the body is from the cell body to the axon. This nerve impulse, or action potential, is a sudden and rapid change in the transmembrane potential difference.

Normally, the membrane of the neuron is polarized at rest, which means that the ionic constitution of the medium internal to the membrane is different from the external medium, which generates different electrical charges in one medium and the other, so this difference, ie , the potential during rest is negative (-70 mV). The action potential thus consists of a rapid reduction of membrane negativity to 0mV and inversion of this potential to about + 30mV, followed by a rapid return to values slightly more negative than the resting potential of -70mV.

Nervous impulse or action potential, therefore, is a phenomenon of an electrochemical nature and occurs due to changes in the permeability of the neuron membrane. These permeability modifications allow ions to pass across the membrane. Since ions are electrically charged particles, changes also occur in the electric field generated by these charges.

Thus, we can say that the correct answer to this question is: Electrical -> Chemistry -> Electrical

8 0
3 years ago
While analyzing a karyotype, geneticists identify a missing chromosome. Which term describes this chromosomal abnormality?
Alinara [238K]

Answer:

Aneuploidy

Explanation:

Aneuploidy is the presence of abnormal normal of chromosomes in a cell. Example: The chromosomes number 45 or 47 chromosomes which is not common in case of human beings.

The normal number of chromosomes in human beings is 46. This results in different syndromes which can cause deformities in the body of the individual.

It leads to miscarriage in most of the cases the survival is very less.

5 0
3 years ago
Read 2 more answers
Marc checked in to the urgent care with symptoms of fever, sore throat and fatigue. His strep test turned out to be positive. St
nikitadnepr [17]

ANSWER:

Cytokines, Chemokines, Leukocytes, Neutrophils, Macrophages, and Dendritic cells are all involved

EXPLANATION:

On the incidence of Streptococcus, the immune system activates a complex response that relies basically on the instatement and activation of macrophages, neutrophils, and dendritic cells.

These activities will only occur on the activation of innate immune responses through workout between pattern recognition receptors (PRRs) with streptococcus derived pathogen-associated molecular patterns (PAMPs).

Moreso, cytokines and chemokines (well known are IL-1β and CXCL1 respectively) produced by macrophages and dendritic cells on exposure to Streptococcus, elicits neutrophil.

Neutrophils then produces antimicrobial proteins, reactive oxygen species (ROS) and sometimes neutrophil extracellular traps (NETs), all these for the bacterial infection control.

5 0
2 years ago
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