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e-lub [12.9K]
3 years ago
13

Ayuden ahora porfa ❤️❤️❤️

Biology
1 answer:
Ostrovityanka [42]3 years ago
6 0

Answer:

creo que es la D

Explanation:

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1. Which of the following is NOT an essential characteristic required of an organism to be classified in the phylum Chordata?
Andre45 [30]

Answer:

1c. Pharyngeal pouches

2d. Reduce water concentration

3b. A diploid (2N) adult organism

4c. Duck

5a. a chimpanzee figuring out how to use a new tool to obtain a hidden food source

6a. salamander

7c. Annelids and mollusks

8b. cell wall and chloroplasts

9c. seeds

10d. Protection and immunity

6 0
3 years ago
As the electrons pass through the electron transport chain between Photosystem I and II, they use their energy to pump _________
skelet666 [1.2K]

Answer:

protons /H+

thylakoid membrane of the chloroplast

acid.

Explanation:

This is chemiosmosis. And the ultimate aim is to synthesis ATPs. Proton Motive Force generated from the electron transport chain continuously pump protons(H+) from the stroma into the thylakoid membrane of the chloroplast,

The build up of  protons/H+ generated electrochemical gradients between this  space and the stroma.

Therefore proton/H+ diffused down the gradient into the stroma. The energy generated from the downwards diffusion is used by the ATPase synthase to synthesize ATPs from ADP and inorganic phosphate (Pi), to be used in Calvin Cycle for CHO, productions.

The protons/H+ pumped by PMF and  concentrated in the thylakoid memebrane is obtained from the  split of Hydrogen atoms  to electrons(e-) and H+. since pH is negative Log of [H+], therefore the space will be acidic from large concentration of H+/protons.

5 0
3 years ago
An experimenter is interested in studying the relationship between hunger and aggression. She decides that she will measure aggr
Alika [10]
<h2>Operational </h2>

Explanation:

The operational definition is the description of a specific process, or set of validation tests, accessible to more persons than the definer (i.e., said to be publicly accessible), where it can be repeatedly measured or tested

Operational definitions are also used to define system states or (nonspecific) physical objects by the description of a specific process of preparation which can be repeated

For example in the given example experimenter is using the case of hitting a punching bag to measure the level of aggression in someone

3 0
3 years ago
What non infectious disease caused by​
Anarel [89]

Answer:

A disease that is not contagious is called a noninfectious disease. These diseases are not caused by pathogens. Instead, they are likely to have causes such as lifestyle factors, environmental toxins, or gene mutations. Common types of noninfectious diseases include cancer, diabetes, and immune system diseases.

zain...insta...are youyou naina..

5 0
3 years ago
If anyone is willing to help me, I will greatly appreciate it. I can’t afford to fail… I need to graduate so I can achieve my go
Valentin [98]

Answer:

1) you're going to have to flip the coins (or fake numbers) for the experimental trials.

2) for the theoretical, there is 1/2 chance for heads or tails with each toss, so you'd expect that out of 10 tosses, 5 heads, 5 tails. out of 100 tosses- 50 heads, 50 tails.

When tossing 2 coins- 1/2×1/2 = 1/4 (25%) chance that 2 heads, 2 tails, or 1 heads & 1 tails. Deviation value comes from after you done your flipping and recorded your data. So if on 100 flips you actually got 50 and 50 (rarely us that exact ;), the deviation from the expected of 50/50 would be 0.00. If however you flipped 100 heads or 100 tails (impossible), then the deviation value would be 1.00.

|(100-50)| ÷ 50 = 50÷50 = 1.00

So usually you may have data like: 47/53 or something a little off than 50/50, making deviation |(47-50)| ÷ 50 = 3÷50 = 0.06.

Now the number of flips is important for the outcome! So if a coin toss if 10 times had 4 heads, 6 tails, the deviation value would be:

|(4-5)| ÷ 5 = 1÷5 = 0.20

So increasing the # flips DECREASES the deviation value!!

Whether it's from 10 to 100, or from 100 to 200. Look at my example of how the 10-flip deviation of 0.20 decreased to 0.06 with 100-flip

5 0
2 years ago
Read 2 more answers
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