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
Lemur [1.5K]
3 years ago
13

The d-value of a bacterial culture heated to 100°c is the time it takes to kill ________% of the population.

Biology
1 answer:
ira [324]3 years ago
7 0

The d-value of a bacterial culture heated to 100°c is the time it takes to kill 90% of the population.

D-value or decimal reduction dose is a term used in microbiology and it refers to decimal reduction time. It can be defined as the time (or dose) required at a given condition (e.g. temperature), to kill 90% of the exposed bacteria.


You might be interested in
Opsins are proteins that are found in the light-sensing cells in the human eye. Different opsin proteins are sensitive to differ
Zepler [3.9K]

Answer:

Women who carry one copy of the mutated gene still have normal color vision because they have another copy, which is not mutated, in the other X chromosome that will be the dominant one. As a result, the women are carriers of the mutated gene but not color blind.

Explanation:

Colorblindness is a sex-linked mutation. A woman has two X chromosomes, while a man has one X chromosome and one Y chromosome. The mutated gene that causes color blindness is on the X chromosome, and it is OPN1LW. So if a woman has one mutated OPN1LW in one of her two X chromosomes, the OPN1LW gene in the other X chromosome will be the dominant one stopping the woman from being colorblind.

In the case of men, as they only have one X chromosome, if there is a mutation on the OPN1LW in the X chromosome, the men will be colorblind because there is no extra copy of the gene, as it is in women.

6 0
3 years ago
Which is the best example of a hypothesis leading to new experimental
Serjik [45]

try it first then do it over again until it works

3 0
3 years ago
Which of the following scenarios is most likely to occur if the climate continues on its current trajectory? a. Continental glac
pychu [463]

Answer:

b. Cities like New York, New Orleans, and Miami will be flooded by ocean water.

Explanation:

The theory says global warming will cause the temperature of the planetary atmosphere to rise. The hotter environment will make ice masses of Greenland, and the poles to melt completely and make coastal cities like New York, New Orleans, and Miami flooded by the ocean.

6 0
3 years ago
7. What is a benefit of selective breeding in agriculture?
8_murik_8 [283]

Answer:

im my opinion... the answer is A

7 0
3 years ago
Which box depicts the tissue level of organization?
Effectus [21]
<span>Levels of OrganizationIn unicellular (single-celled) organisms, the single cell performs all life functions. It functions independently. However, multicellular (many celled) organisms have various levels of organization within them. Individual cells may perform specific functions and also work together for the good of the entire organism. The cells become dependent on one another.Multicellular organisms have the following 5 levels of organization ranging from simplest to most complex:<span><span>LEVEL 1 - Cells<span><span>Are the basic unit of structure and function in living things.
</span>May serve a specific function within the organismExamples- blood cells, nerve cells, bone cells, etc.</span></span><span>LEVEL 2 - Tissues<span>Made up of cells that are similar in structure and function and which work together to perform a specific activity
Examples - blood, nervous, bone, etc. Humans have 4 basic tissues: connective, epithelial, muscle, and nerve.</span></span><span>LEVEL 3 - OrgansMade up of tissues that work together to perform a specific activityExamples - heart, brain, skin, etc.</span><span>LEVEL4 - Organ Systems 
<span>Groups of two or more tissues that work together to perform a specific function for the organism.
Examples - circulatory system, nervous system, skeletal system, etc. 
The Human body has 11 organ systems - circulatory, digestive, endocrine, excretory (urinary), immune(lymphatic), integumentary, muscular, nervous, reproductive, respiratory, and skeletal.</span></span><span>
LEVEL 5 - Organisms 
<span>
Entire living things that can carry out all basic life processes. Meaning they can take in materials, release energy from food, release wastes, grow, respond to the environment, and reproduce.
<span>Usually made up of organ systems, but an organism may be made up of only one cell such as bacteria or protist.
</span>Examples - bacteria, amoeba, mushroom, sunflower, human</span></span></span></span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • Describe how pangaea and continental drift are related
    9·1 answer
  • What's the capstone project? <br><br>is it important? ​
    15·1 answer
  • William is observing a single-celled organism under a microscope and notices that it has a nucleus and is covered in small, hair
    5·1 answer
  • A LOT OF POINTS!!!! ONLY A FEW QUESTIONS!! FAN AND MEDAL!!
    13·1 answer
  • Which of mendel's laws or principles states that gametes carry one allele for each trait?
    9·1 answer
  • Migration is _______.
    15·2 answers
  • Define the term porosity
    11·2 answers
  • Which of the following statements about the primary wall is FALSE?
    9·2 answers
  • 13 Our
    8·1 answer
  • Help me guys please<br><br><br><br><br><br>without 1​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!