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horrorfan [7]
4 years ago
13

Plant cells _______.

Biology
1 answer:
DerKrebs [107]4 years ago
7 0

Answer:. have chloroplasts and a cell wall

Explanation:All living organisms are made up of cells.some organism are made up of one cell (Unicellular) and other organism are made up of many cells(multicellular).

Cells are made up of organelles and the organelles present in a cell differ in animals cells and plant cells.

A feature that animals cells have which plant cell do not have is the presence of centrioles.

Features that plant cell have which animals cells do not have are the presence of chloroplast ,vacuole and cell walls.

Animals do not produce their food but plants do.Green Plants produce their food through chloroplast,which contains chlorophyll.

Plants has cells walls which is rigid and made up of cellulose,lignin and pectin.this rigid structure of the cell wall contributes to the rigidity of plants stems and roots.

Option A is incorrect because plant and animal cells have mitochondria.

Option B is incorrect because plants cells have both plasma membrane and cell walls.the cell wall surrounds the plasma membrane.

Option C is incorrect because plants contains Golgi apparatus and vacuole

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The segments of DNA that we call genes usually code for proteins. The region of
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Are fermentation reactions intracellular or extracellular? Explain.
kenny6666 [7]

Answer: Yes.

Explanation:

Fermentation is a general term denoting anaerobic degradation of glucose or other organic nutrients in various products to obtain energy in the form of ATP. Fermentation occurs when, after glycolysis, the Krebs cycle is not performed, because the organism does not have it or because this pathway is blocked, such as during hypoxia (lack of oxygen). Fermentation is a process used by bacteria to obtain energy, does not use oxygen and occurs in the cytoplasm of cells, ie an intracellular process, and each step is catalyzed with the help of different enzymes.

Some industries use this process in the production of some products, known to all of us, such as:

1. yogurt is produced by the famous lactic fermentation, where bacteria called lactobacilli to produce lactic acid.

2. bread and beer are produced by alcoholic fermentation, where the fermentation is carried out by fungi (facultative anaerobic), which ultimately produce alcohol;

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4 0
3 years ago
NEED HELP QUICK!!
blsea [12.9K]

Explanation:

  1. In mechanical digestion, the teeth grind food and break it in to smaller parts.
  2. Churning and the enzyme pepsin break down protein in the stomach.
  3. The pancreas releases the enzymes trypsin and chymotrypsin.
  4. Trypsin and chymotrypsin act on the proteins to break them down in the duodenum.
  5. Amino acids are absorbed by the capillaries in the jejunum.
  6. Amino acids enter the bloodstream and are circulated throughout the body.

Further Explanation:

Food is chemically and mechanically broken down into into smaller particles. This begins in the mouth, where food is mechanically crushed by the teeth, and mixed with saliva to allow water based enzymes like lingual lipase to work;- it's then transported to the stomach via the esophagus. Next in the stomach the enzyme gastric lipase acts on lipids, breaking them up into their components.

In the stomach, the enzyme pepsin breaks proteins, like those found in salmon, into smaller peptides by splitting the peptide bonds holding the proteins together. In the stomach, the enzyme pepsin breaks proteins, into smaller peptides by splitting the peptide bonds holding the proteins together.

The duodenum processes these newly-formed peptide chains or polypeptides, into smaller ones, through the enzyme action of elastase, trypsin and chymotrypsin; these are produced in the pancreas. Peptidases convert these fragments into amino acids for absorption into the bloodstream via the small intestines.

After digestion, the process of absorption occurs within villi of the small intestine; this occurs within the jejenum. Villi are small finger-like projections from epithelial cells of the small intestine; due to the projections, they have increased surface areas for absorption. Absorption involves several processes such as:

  • endocytosis
  • passive diffusion
  • facilitated diffusion
  • active transport
  • secondary active transport (co transport)

The nutrients are then taken up into the bloodstream via capillaries, and circulated through the body

Learn more about digestion at brainly.com/question/12328001

Learn more about Fats and calories at brainly.com/question/10071175

Learn more about ATP formation at brainly.com/question/7442284

#LearnWithBrainly

6 0
3 years ago
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