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Evgen [1.6K]
3 years ago
13

When conducting an experiment, which of the following is generally true? Performing a larger number of experimental trials makes

the results more dependable. It is unsafe to perform a large number of experimental trials. The number of trials performed does not affect the validity of the results. Performing a smaller number of experimental trials makes the results more dependable.
Biology
1 answer:
Helen [10]3 years ago
4 0
"Performing a larger number of experimental trials makes the results more <span> dependable" is correct. This allows for more time to determine if there are other variables affecting the results. </span>
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Water molecules stick to other materials due to its polar natue. This property is called And Explain?
ioda

This property is called adhesion.  Hydrogen bonds hold water molecules closely together which causes water to have high surface tension.

6 0
3 years ago
Chloe is developing a model of photosynthesis. The first part of the model is shown below. Which would be the MOST useful next s
BartSMP [9]

Answer:

Photosynthesis is an endergonic process because it needs the participation of the sun's radiant energy to start the chain of reactions that lead to the formation of the organic compounds stored in the body.

The overall reaction of photosynthesis is:

(CH2O) is an abbreviated way of representing starch or other carbohydrates by an empirical formula. Starch is the product of the most abundant photosynthesis. Photosynthesis is affected by different environmental factors, such as light intensity and quality, air humidity, temperature, availability of water, mineral nutrients and carbon dioxide. The photosynthesis of a single sheet is based on more than fifty individual reactions, each dependent on environmental variables (Cogua, 2011).

On the ability of the specified plants to compensate for environmental effects, it depends on their performance and survival in a given environment. The rate of photosynthesis may vary in the next variable variations of adaptive responses to changing levels of CO2, including from direct responses to CO2 itself to indirect responses due to changes in temperature and water regime that may affect the future ( Cogua, 2011).

The cellular organelles where photosynthesis occurs are chloroplasts. Their location is illustrated in Figure 1.1 the size and shape of the chloroplasts varies; they originate from structures known as protoplastidia (young chloroplasts), dividing as the embryo develops. Chloroplasts are surrounded by a double set of controlling membranes of the outward and inward transit of the molecules. Internally they consist of a jelly-like material rich in enzymes called stroma. It is here that the reaction of conversion of carbon dioxide into carbohydrates occurs. Chloroplasts have laminar membranes and in the form of flattened closed sacs, such as vesicles, called thylakoids. The thylakoids form piles called grana, which are connected to each other by other thylakoids in a more elongated manner. In the thylakoidal membranes are chlorophylls and other pigments that participate in the absorption of light, enzymes for the transport of electrons and the coupling factor for the formation of ATP. The main pigments present in the thylakoid membranes are chlorophyll a and chlorophyll b. in turn there are other pigments called carotenes and xanthophylls (Salisbury and Ross, 1994).

5 0
3 years ago
All of the following are examples of negative human impact on the environment EXCEPT...
saveliy_v [14]

Answer:

reducing waste

Explanation:

reducing the amount of waste in the environment is a good thing!

5 0
3 years ago
What anchoring structure do mosses have instead of roots
Rainbow [258]

Answer:

The correct answer is- Rhizoids

Explanation:

Mosses are the small plants that don't bear flowers, stems, and roots and they grow in clumps. As they do not have root they developed root-like structures to anchor in the soil called rhizoids. They show a similar structure with the root hairs of higher land plants and also perform similar functions.

As mosses do not contain any stem and roots for transporting water therefore they usually grow in moist conditions where water is plenty and dry very quickly when surface water is removed.  

Therefore rhizoids are the anchoring structures that mosses have instead of roots.

6 0
4 years ago
The papillary muscles contract after the other ventricular muscles so that they can take up the slack on the chordae tendineae b
sashaice [31]

Answer:

False

Explanation:

The papillary muscles of both right and left ventricles began to contract shortly before the other ventricular muscles (systole) so that they can take up the slack on the chordae tendineae as the full force of ventricular contractions sends blood against the atrioventricular (AV) valve flaps.

They prevent the backward flow of blood to atria from ventricles. So if they contract after the ventricle systole they would not be able to perform their job.

8 0
3 years ago
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