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snow_lady [41]
3 years ago
11

What part of the brain controls breathing and heart rate?

Biology
1 answer:
Novosadov [1.4K]3 years ago
5 0

Answer:

B. Brain stem

Explanation:

The brain stem controls basic body functions such as breathing, swallowing, heart rate, blood pressure, consciousness, and whether one is awake or sleepy.

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Define the components of blood and briefly describe their role.
Grace [21]
Tha main components in blood are the plasma, red blood cells, white blood cells, and blood platelets.

Plasma is like the main component that makes up most of the blood. It has a light yellow color and it carries many substances including nutrients, waste, hormones and more.

Red blood cells are the reason why blood is red in color. They have a hemoglobin inside them which can help carry oxygen for the tissues and organs. In order to maximize the oxygen carrying capacity, they don't have a nucleus.

White blood cells can be divided into phagocytes and lymphocytes. Their main function is to protect us from diseases. Phahocytes and engulf and digest bacteria, while lymphocytes can produce antibodies.

Blood platelets can cause blood clotting which can stop us from bleeding forever. They're not cells, but just fragments of cells. They also don't have nucleus since they're not complete cells.
8 0
3 years ago
A plant's life cycle alternates between ____ and ____ generations.
Semenov [28]
" Gametophyte, Secondary. "
6 0
3 years ago
Hunger is best described as__________.
Andrews [41]

Answer:

A) a physiological desire to consume food is the correct answer.

Explanation:

  • Hunger is a feeling that the person needs food to eat.
  • Hunger makes the body weak and vulnerable to infections because the body does not get adequate food to fight against the infections and due to hunger people suffer from malnutrition and if children remain hungry they often have abnormal in their growth.
  • hunger is caused because of poverty, job instability, food shortages, poor infrastructure, nutritional quality.
  • Symptoms of hunger are:
  • Feeling of growling and emptiness in the stomach.
  • Dizziness
  • Gurgling in stomach
  • not able to concentration
  • headache
  • irritability
  • nausea

8 0
3 years ago
Read 2 more answers
In horses, the gene for black coat color is dominant over the gene for brown coat color. The gene for long manes is dominant ove
Gwar [14]

Answer:

3/16

Explanation:

Given,

Black coat color is dominant over brown coat color.

Long mane is dominant over short mane.

BBLL X bbll =

F1: BbLl = Entire progeny has black color and long mane

BbLl progeny will produce BL, Bl, bL and bl gametes. When they interbreed, the resultant F2 progeny will be in 9:3:3:1 dihybrid ratio. Hence in F2,

BBLL : BbLL : bbLl : bbll = 9 : 3 : 3 : 1

3/16 progeny will have bbLl genotype hence 3/16 progeny will have brown, long mane.

4 0
3 years ago
Once nutrients have been broken down through the process of cellular respiration, which of the following must also happen in ord
irina [24]
I think the answer is B:the cell must remove waste
Explain: it’s definitely not option 1, it’s an animal cell. The last one I doubt as well. So it is down to B and C.
3 0
2 years ago
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