1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lyudmila [28]
3 years ago
9

An enzyme is a special type of protein molecule. Intestinal cells produce digestive enzymes that break down food. These enzymes

are not produced by blood cells. Which statement best explains why?
A)The genes for the digestive enzymes are expressed in both intestinal cells and blood cells.

B)The genes for the digestive enzymes are not present in the blood cells.

C)The genes for digestive enzymes are present in the intestinal cells, but are not expressed.

D)The genes for digestive enzymes are not present in the intestinal cells.

E)The genes for digestive enzymes are present in the blood cells, but are not expressed
Biology
1 answer:
snow_lady [41]3 years ago
3 0
The best explanation for this question is B (for mammals) (it could be E if you replace the blood cell with another nucleated cell, or if the blood cell is nucleated like in birds).

The erythrocyte (also called red blood cell) is part of the figured elements of the blood. In mammals, it is an anucleate cell (devoid of nucleus). Its cytoplasm is rich in hemoglobin, which transports oxygen (O2), but is very poor in organelles that exist only in trace amounts.


You might be interested in
Which of the following is not associated with Wilson disease?
fredd [130]

Answer: Pancreatitis

Explanation:

Pancreatitis may start suddenly and last for days, or it can occur over many years. It has many causes, including gallstones and chronic, heavy alcohol use.

Symptoms include upper abdominal pain, nausea, and vomiting.

Treatment usually requires hospitalization. Once they stabilize the patient, doctors treat the underlying cause.

3 0
3 years ago
how do primitive heterotrophs produce energy? a. aerobic respiration b. chemical fermentation c. photosynthesis
goldfiish [28.3K]
The answer is A Aerobic respiration  
7 0
3 years ago
Read 2 more answers
Cell membranes perform all the following functions except—
vodka [1.7K]
Cell membranes do not make nutrients (or energy) for the cells. This is the function of the mitochondria by the electron transport chain, tricarboxylic acid cycle, and beta oxidation. The cell membrane is responsible in holding the cytoplasmic components of the cells. The cell membrane is also involved in substance regulation by acting as a semi-permeable membrane for simple diffusion as well as the site where carrier proteins are embedded for facilitated diffusion (not ATP requiring) and active transport (ATP requiring). The cell membrane is also involved in cell to cell recognition because receptors are also embedded in the cell membrane. 
3 0
4 years ago
What is the name of the binding site of RNA polymerase in eukaryotes?
gulaghasi [49]
J. Promoter

Explanation: A transcription factor and its associated transcription mediator complex must be attached to a DNA binding site called a promoter region before RNAP can initiate the DNA unwinding at that position.
4 0
3 years ago
Read 2 more answers
A fourth type of restriction enzyme is identified that cleaves at precise locations like a type II enzyme, but it also occasiona
Mkey [24]

Answer:

No, in molecular cloning cutting mistakes can lead to in correct ligation

C) No, because cutting mistakes could lead to incorrect cloning.

Explanation:

in molecular cloning, if you want to insert a specific gene of interest in to specific vector, the selection of enzyme and strategy before that is very important.  The restriction enzyme should be selected which restrict at the desired location in the cloning sites. Any mistake in these selection or undesirable mutation mistakes can lead to in correct or unsuccessful cloning results.  

6 0
3 years ago
Other questions:
  • The gland located at the base of the brain is the _____ gland.​
    15·1 answer
  • What is the human digestion
    13·1 answer
  • Malthus studied limited resources and the impact of limited resources on human populations. How did these ideas contribute to Da
    6·2 answers
  • If forces acting on an object are unbalanced which factor may result from an unbalanced force
    7·2 answers
  • Which of the following is true of microbes?A. Ninety-nine percent of all microbes are pathogenic.B. Gene expression in bacteria
    11·2 answers
  • In a beach ecosystem, what can limit growth of organisms?
    11·1 answer
  • What do the circled arrows in the image indicate? A. CO2 absorbed by the atmosphere
    11·1 answer
  • HELPP ASAP WILL MARK BRAINLEST!!!!
    12·1 answer
  • In peas, both male and female sex cells -blank- are in the same flower​
    5·1 answer
  • Fossils of organisms that are different than today's organisms and are found in deeper rock layers indicates that
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!