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zheka24 [161]
3 years ago
12

Which two of these characteristics are examples of endoskeletons?

Biology
2 answers:
Sunny_sXe [5.5K]3 years ago
4 0
I believe it is C) calcium-rich plates echinoderms and B) bones in mammals like vertebral 
tensa zangetsu [6.8K]3 years ago
3 0

Answer:  

Option B and option C are correct.

Explanation:

Endoskeleton - An internal support structure or skeleton is on the inside of a body, composed of calcium or mineralized tissue.

B. Bones in mammals - are endoskeleton, it supports the body in its shape.

C. Calcium-rich plates in echinoderms are acts like exoskeletons but most of the cases a thin tissue surround skeleton so it is an endoskeleton.

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<span>B) Earth revolving around the sun and the sun's light being reflected off the moon because the moon orbits earth and earth orbits the sun so the sun lights the moon

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3 0
3 years ago
Faking your experimental results is called _____.
guajiro [1.7K]
Scientific misconduct
6 0
3 years ago
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The intracellular calcium ion concentration of ventricular muscle cells averages 10-4 mmol/L during diastole. The calcium ion co
Wewaii [24]

Answer: The correct answer is option D

SECONDARY ACTIVE COUNTER-TRANSPORT

Explanation: Secondary active transport is a type of transport that involves molecules across the cell membrane utilizing or making use of energy in other forms than Adenosine Triphosphate (ATP).

The energy that is being made use of comes from the electrochemical gradient created by pumping ions out of the cell. This can be either via antiport or symport.

Antiport or Counter-transport means that 2 different molecules or ions are being transported at the same time but opposite directions. One of the species is allowed to flow from high concentration to a lower concentration (often Sodium) while the other species is transported simultaneously to the other side.

Example is Na+-H+ counter-transport, the example and advantage of this transporter is clearly seen in the proximal tubules of the kidneys. The mechanism for concentrating H+ is not nearly as powerful as Primary active transport, however it can transport extremely large numbers and thus making it a key in H+ homeostasis in the body.

4 0
3 years ago
Read 2 more answers
When Europeans arrived, the white and red pine that grew near the jack pine plains, were logged and then all the pine acreage wa
kari74 [83]

Answer:

Deforestation negatively impacts the <u>carbon cycle</u> as <u>trees</u> play an important role in <u>balancing the amount of carbon in the atmosphere</u>.

Explanation:

Deforestation is one of the most damaging activities to the environment due to different reasons but mainly because it releases important amounts of carbon dioxide to the atmosphere due to the logging and burning of forests and also leads to the reduction of fauna populations because of habitat destruction.

In this case, cutting white and red pines and then setting a pine acreage on fire disrupts the carbon cycle because:

a) [As stated above] <u>Trees play an important role in balancing the amount of carbon dioxide (CO2) in the atmosphere</u><u> as there is less photosynthesis carried out by plants - important part of the carbon cycle.</u>

b) <u>When </u><u>trees (wood) are burned, the carbon that was formerly stored is released into the atmosphere as CO2,</u> leading to another disruption in the carbon cycle.

5 0
3 years ago
How many chromosomes would a cell have after mitosis if it has 24 chromosomes during interphase?
Volgvan

If a cell has 24 chromosomes during interphase then after mitosis or mitotic division it will have 24 chromosomes.

Interphase is the resting phase between successive mitotic divisions of a cell, or between the first and second divisions of meiosis.

Mitosis or mitotic division is a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.

If a cell has 24 chromosomes during interphase then the daughter cell resulting from mitotic division or mitosis will have 24 chromosomes.

To know more about chromosomes:

brainly.com/question/1208885

6 0
1 year ago
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