Why might a tapeworm have an expanded reproductive system compared to a planarian?

Answers

Answer 1

Answer: Tapeworms are hermaphroditic, like the Planaria. The difference between them is that Tapeworms can reproduce sexually, either through self-fertilization or cross-fertilization with another tapeworm, or asexually, by breaking off proglottid segments at the end of the trunk. While the
Planaria are sexual and asexual only. Sexual planaria possess both testicles and ovaries. One of their gametes will combine with the gamete of another planarian. Each planarian transports its excretion to the other planarian, giving and receiving sperm. Eggs develop inside the body and are shed in capsules. Weeks later, the eggs hatch and grow into adults

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Scientists were conducting a multiyear study on the effectiveness of a new drug for long-term memory loss. Theygave some of the test subjects the new drug to find out if it improves their long-term memoryWhich is a possible limitation of this study?O Test subjects may want to participate in additional experiments.O Test subjects may find that the drug is not effective.O Test subjects may get bored and want to quit early.O Test subjects may have full-time jobs.
How many carbon dioxide molecules are produced during the seller respiration of glucose molecules?
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The cell theory states that all living cells come from pre-existing cells. If that's true then, how did the first cell originate?1 not enough information is given2 Nature created the first cell.3 The first cell originated spontaneously.4 This postulate of cell theory is false.
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The female plant structure consisting of the stigma, style, and ovary is calleda. a stamen.
b. a sepal.
c. a pistil.
d. a carpel.

Answers

i pretty sure its the carpel yeah thats it the carpel

I just learned this a few weeks ago. I believe it's A-stamen or C-pistil. I'm leaning towards A though...hope I helped.

Determine the density of the rock using correct significant digits. The mass of the rock is 25.69 g

Answers

The right answer for the question that is being asked and shown above is that:

The density of a certain object can be solved using two parameters: The mass and the volume.
Density = mass / volume.
So, from the given question, we are lacking on what the volume is.

How has technology benefited energy production brainlya.
It has provided for the use of alternate energy sources that have reduced impact on the environment.
b.
It has allowed for the use of energy sources that are renewable.
c.
It has allowed for the improvement of existing methods of producing energy.
d.
All of the above

Answers

d.
All of the above

One of the best example of environmental technology that we are currently using is the solar light energy. IT took its electricity in a sun and accumulate those energies into a solar technology. Then after that it can already light the whole house or makes your appliances working without using the current electricity provided by the electric Companies. Second is the water filter technology. IT collects water from the rain then filter it and can be use in doing the household chores like laundry, washing plates, etc.

Answer:

the answer is d

Explanation:

Which criteria are responsible for deciding whether a heterogeneous mixture is a colloid or a suspension?

Answers

The main difference between a colloid and a suspension mixture is the size of the solute particles. Colloids have solute particles that are around 10-1000 angstroms big. They are considered to be intermediate in size because they are bigger than solutes in homogeneous mixtures, but are smaller than suspension mixtures. Colloids tend to form cloudy, yet uniform solutions. The cloudiness of the mixture is caused by the solute particles suspended or floating in the solvent.

Suspension mixtures have solute particles that are greater than 10,000 angstroms. The particles are so big that they can no longer be evenly distributed, so they settle at the bottom of the solution. In suspension mixtures, there is a visible line between the different components of the mixture.

What do all forms of active transport have in common?

Answers

The forms of active transport that should be in common is by using the ATP.

Forms of active transport:

The plasma membrane should be selected also capable for controlling the movement of the substance via the passive transport where it does not use the energy and the active transport means when it needs the chemical energy in the form of ATP.

The interior of the cells should be highly concentrated glucose that shows an high energy storage molecule.

learn more about cell here: brainly.com/question/16968985

Answer:

-Using ATP

Explanation:

Cells use various mechanisms to move substances across their plasma membranes. Plasma membranes are selectively-permeable and capable of controlling all movement of substances through:

passive transport, which does not use energy;
and active transport which requires chemical energy in the form of ATP.

Active transport involves the movement of substances out of cells against their gradients. For instance, glucose is transported across the membrane with specialized carrier proteins embedded within the membrane, and active transport; the cell's interior is highly concentrated- glucose is a high energy storage molecule required by many metabolic processes and required in high amounts.

Describe what a limiting factor is and describe how each factor impacts the rate of photosynthesis.

Answers

A limiting factor is anything that constrains a population's size and slows or stops it from growing. these factors are mostly biotic . For example, Food or mates. Even competing for resources. Factors for the rate of photosynthesis range. The rate of oxygen output, carbon dioxide uptake, carbohydrate (glucose/sugar) production, temperature is also a limiting factor because At low temperatures, the rate of photosynthesis is limited by the number of molecular collisions between enzymes and substrates. At high temperatures, enzymes are denatured. As well as light intensity because without the sun it’s not even possible

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