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valkas [14]
3 years ago
14

Rutherford propose that atoms have positive nuclei. Which statement correctly describes the nucleus of an atom?

Biology
1 answer:
Marianna [84]3 years ago
5 0

Answer:

Option (2).

Explanation:

Rutherford explains the model of atoms. According to him, protons and neutrons are present inside the nucleus and electrons revolve around the nucleus in a orbit.

The nucleus is made of proton and neutron. Most of the atom mass is located inside the nucleus. The alpha particles are deflected back from the center of the atoms that contains positively charged protons.

Thus, the correct answer is option (2).

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Which statement regarding the hypothalamus is FALSE?
Margarita [4]

Answer:

All the options are correct regarding hypothalamus.

Explanation:

The hypothalamus is the part of the forebrain. The diencephalon is divisible into 2 parts - thalamus and hypothalamus. It regulates various functions of the body.

This is the thermoregulatory center of the body. It gives the signal to sweat during a hot environment and shiver in winter. This maintains the water balance in the body by stimulating the secretion of ADH hormone in the kidney.

Hypothalamus also has regulated anterior pituitary hormone secretion. Thus it controls the endocrine secretion of pituitary glands.

This plays an important role in hunger and thirst. The feeding habits like the licking of lips, swallowing, and salivating by seeing delicious foods is due to hypothalamic activities.

The behavioral activities of individuals influenced by the hypothalamus.  It is worked along with the limbic system of the brain. The behavioral activities include fear, punishment and sexual desire.

6 0
3 years ago
A person's "VO2 max" is the maximum:_______.
givi [52]

Answer: Option D.

Rate of oxygen consumption.

Explanation:

Volume of oxygen used or Vo2 Max is the maximum ability of a person to consume oxygen and the ability of the heart, lungs and blood to transport the oxygen to other tissues and utilize it to produce ATP or energy during intense exercise.

7 0
3 years ago
Why do animals become adapted to their environments?
marin [14]

Answer:

For survival

Explanation:

All organisms need to adapt to their habitat to be able to survive. This means adapting to be able to survive the climatic conditions of the ecosystem, predators, and other species that compete for the same food and space.

Hope this helps:)

3 0
2 years ago
Which of the following statements about the compound HCI is true?
sukhopar [10]
Answer.
The answers is A; The physical and chemical properties of HCl are different from those of H2 and Cl2.

Explanation; 
Hydrogen chloride is a gas, which is a molecule made up of a hydrogen and a chlorine atom bonded by a single bond. 
The chemical and physical properties of HCl differs from those of hydrogen and chlorine. For example; they have different molecular weight; HCl is colorless, while chlorine is greenish yellow and hydrogen is colorless
8 0
3 years ago
Read 2 more answers
"Exhaled air containing __________ bubbles into water and reacts with water to produce carbonic acid. This will cause the soluti
Lera25 [3.4K]

Answer: Exhaled air containing Carbon dioxide bubbles react with water to form carbonic acid . The solution turn acidic and turn from green to yellow.

Explanation:

Exhaled carbondioxide bubbles reacts with water to form carbonic acid, the solution will turn acidic. Carbonic acid is a weak acid that decrease pH. An indicator of it shows that the solution turns from green to yellow.

Co2+ H2O= H2Co3.

The solution then dissociate to give H ion and hydrogen carbonates ion.

4 0
3 years ago
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