Answers
Answer:
Explanation:
6. He was investigating a mold growing in Staphylococcus culture dishes, that may have been killing bacteria.
7. He hypothesized that the mold was producing a chemical that killed the bacteria.
8. He tested the hypothesis by growing the mold in a broth then transferring it into a bacteria culture.
9. After putting mold into a culture with bacteria in it, the bacteria then died.
10. Antibiotics
Related Questions
True or False:
Cold fronts often bring stormy weather.
Answers
Answer:
true, Since the other person said false here's Evidence:
Many fronts cause weather events such as rain, thunderstorms, gusty winds, and tornadoes. At a cold front, there may be dramatic thunderstorms. At a warm front, there may be low stratus clouds. Usually, the skies clear once the front has passed.
The organisms that are usually fossilized
by replacement are what?
Answers
Answer:
when the original shell or bone dissolves away and is replaced by a different mineral; when this occurs with permineralization, it is called petrification. In compression, the most common form of fossilization of leaves and ferns, a dark imprint of the fossil remains.
Explanation:
2 examples of density. plz
Answers
include iron, lead, or platinum.
Humans breathe through bronchi.
Which structure do insects have for breathing?
tracheae
O lungs
O skin
O gills
Pls help
Answers
Answer:
tracheae
instead of lungs, insects breathe with a network of tiny tubes called tracheae
tracheae
they breathe through openings in their body called spiracles
Can someone tell me if I explained this right?
I'll give brainliest :}
Background info: Potato cells are placed in different levels of NaCl.
Answers
An experiment is carried out to determine how different PH values of soil will affect the growth of tomato plants. In this experiment, the dependent variable could be the
A) height of the tomato plants
B) pH of the soil
C) specific variety of tomato plants used
D) pH of enzymes is tomato leaf cells
Answers
Answer:
A. Height of tomato plants
Explanation:
The dependent variable in an experiment is the variable that the experimenter measures or the variable that responds to changes made to the independent variable. The dependent variable is dependent on the independent variable.
In this experiment conducted to determine how different PH values of soil will affect the growth of tomato plants, the growth of the plants is measured by their height. Hence, the dependent variable is the HEIGHT OF THE PLANTS.
HELP???????????????????????????????
Answers
Answer:
B.) why do some materials rust more quickly than others
i need help asap!! I will reward brainliest!
When focusing a specimen it neccessary to focus on the lowest magnification first before switching to higher magnification. why do you think this is important?
Answers
Explanation:
the lower power will focus betterthan the high magnification
What is the structure for each macromolecule (what does each one look like?)
Answers
Answer:
Within cells, small organic molecules are joined together to form larger molecules. These large macromolecules may consist of thousands of covalently bonded atoms and weigh more than 100,000 daltons. The four major classes of macromolecules are carbohydrates, lipids, proteins, and nucleic acids.
The measure of the mass of an atom is called ________.
Question 1 options:
isotope
proton
energy
atomic mass
Answers
Answer:
D
Explanation:
Which of the following is the most important in preventing the spread of
microorganisms in a food establishment?
effective handwashing
wearing gloves when handling food
removing all jewelry
wearing a hair net
Answers
Answer:
effective handwashing
Explanation:
What is the volume of a cube with a length of 3cm an a height of 4cm an a width of 10cm
Answers
Answer:
120 cm
Explanation:
volume is length x width x height so 3 x 4 is 12 and 12 x 10 is 120cm
Answer:
120 cm^3
Explanation:
V= width x length x height
3 x 4 x 10 = 120
and when you multiply centimeters,
cm x cm = cm^2
cm x cm x cm = cm^3
Hope this helps :)
living things are made up of very complicated molecules. why is carbon important for forming these complicated molecules
Answers
Answer:
it forms very strong bonds
Explanation:
Answer:
It forms very strong bonds
Explanation:
case studies assignment grade 11
Answers
2 The main parts of a working clothes dryer are shown in the diagram below.
Drum
Heating duct
and element
Motor
Answers
Answer:
...
Explanation:i dont understand whats the question???
Please help me out
Match these examples
Tissue
Organ
Organ system
With these examples
Bone Marrow
Bones
Skeletal system
human body
Answers
Answer:
organ system -skeletal system,bone marrow is a tissue while bones are organ
(Physical science! Help!)
Answers
Answer:
b
Explanation:
If a female lion runs a distance of 469.2 meters while chasing an antelope, how many millimeters did she run?
Answers
Answer:
the lion ran 469200 millimeters
Explanation:
469.2 x 100 = 469200
Who am I? I have a tail. I eat other animals. I have no hair on my body.
Answers
Answer:
A snake?
Explanation:
Answer:
A Lizard?
Explanation:
It has a tail, has no hair on the body and eats other animals.
If a hurricane was to hit Jacksonville during which Moon phase would
we most likely experience the most damage? Describe the factors that
are involved in order to develop an answer.
Answers
Answer:
I think so
Explanation:
waxing crescent
What does a food chain show the flow of between living things?
water
carbondioxide
oxygen
energy
Answers
Answer:
energy
Explanation:
cuz i did science
How did the development of a waxy cuticle help plants adapt to life on land?
O A. The cuticle minimized water loss from leaves.
B. The cuticle absorbed nutrients from the soil.
C. The cuticle increased photosynthesis.
O D. The cuticle protected reproductive structures.
SUBMIT
Answers
Answer:
a
Explanation:
The cuticle in the plants minimizes the water loss or transpiration from leaves. The correct option is A.
What is transpiration?Transpiration is the process by which water vapor is lost via the stomata of plants. When the weather is very hot, the plant's loss of water vapor cools it down, and moisture from the stem and roots moves upwards or is 'pulled' into the leaves.
The evaporation of extra water from stomata in plant leaves is known as transpiration. It is necessary for some upward movement of water in plants. It aids in the regulation of plant temperature.
To transpire, water vapor must diffuse through this motionless layer from the stomata to the atmosphere, where it will be removed by moving air. The cuticle present in the waxy leaves prevent excess transpiration.
Thus, the correct option is A.
For more details regarding transpiration, visit:
https://brainly.com/question/13891305
#SPJ5
Which statement best describes the effect on water transport across the cell membrane if the aquaporin in the figure ceases to function?
Answers
Answer:
Water molecules will still be able to move across the cell membrane but at a slower rate.
Explanation:
D isn’t a sensible answer because Aquaporin is a protein with a role to regulate water transport. In its absence, of course there will be defects. And A is impossible due to the existence of active transport. (I also looked it up) (:
Answer:
Water molecules will still be able to move across the cell membrane but at a slower rate.
Explanation:
The aquaporin facilitates water passage, but water can still move across the membrane by osmosis. (osmosis requires no channel protein, but aquaporin makes diffusion faster).
Is it possible for two parents that both have a recessive trait to pass off the dominant trait to their offspring???
Answers
which organisms does the Barracuda use for energy
a.Cleaner Wrasse
b.Lemon Shark
c.Algae
d.Parrotfish
Answers
Answer: I believe it's parrot fish
Explanation:I think it's because they aren't bigger than the barracuda i've never heard of them eating algae and Cleaner Wrasse just help the barracuda by cleaning their teeth and mouth area
Complete the Concept Map to compare the locations and remodeling functions of osteoblasts and osteoclasts, and explain how hormones and physical stress regulate bone remodeling.
Answers
Answer:
The correct answer is attached as an image.
Explanation:
Bone remodeling occurs by the remodeling units osteoblast which is bone deposition and osteoclast which is Bone resorption.
Bone deposition is the process that involves the deposition of minerals in bone tissues which takes place due to the process of osteoblast mainly. the bone deposition is possible in three ways when
- there is an increase in blood calcium.
- there is an increase in mechanical stress.
- decrease in parathyroid hormone
Osteoclast cause the degrade of bone tissue by releasing calcium ion from bone tissue which required opposite conditions than osteoblast that are -
- there is a decrease in blood calcium.
- there is a decrease in mechanical stress.
- increase in parathyroid hormone
A decrease in blood Ca++ concentration causes the parathyroid gland to release PTH, PTH results in osteoclasts to degrade bone tissue which releases Ca++ into the blood. A high level of Ca++, calcitonin results in calcium deposition into the bone.
5
LittleJJBarea
10/27/2020
Biology
High School
answered
Complete the Concept Map to compare the locations and remodeling functions of osteoblasts and osteoclasts, and explain how hormones and physical stress regulate bone remodeling.
Bone remodeling involves osteoblasts which is enhances bone deposition and osteoclasts which enhance bone resorption.
What is bone remodelling?Bone remodeling involves the processes by which the bone tissue is remodelled by the action of the osteoblasts which is enhances bone deposition and osteoclasts which enhance bone resorption.
Bone deposition is the process by which bone tissues ate mineralized by means of the osteoblast.
Bone deposition occurs through three possible ways:
increase in blood calcium.increase in mechanical stress, and decrease in parathyroid hormoneOsteoclast are involved in the degradation of bone tissue producing opposing effects to that of the osteoblast as follows:
decrease in blood calcium.decrease in mechanical stress, andincrease in parathyroid hormoneThe parathyroid gland releases PTH in response to low bllod calcium.
PTH induces osteoclasts to degrade bone tissue which releases calcium ions into the blood.
The increase in blood level of calcium ions induces calcitonin to increase calcium deposition in the bones.
Learn more about bone remodelling at: https://brainly.com/question/2114568
Which homeostatic process moves particles against a concentration gradient?
dynamic equilibrium
passive transport
osmosis
active transport
Answers
Answer:
Active Transport
Explanation:
Active transport is the movement of dissolved molecules into or out of a cell through the cell membrane, from a region of lower concentration to a region of higher concentration. The particles move against the concentration gradient , using energy released during respiration.
Whoever is reading this is really luck because i know all the answers to this quiz, the answers are:
B- osmosis
B- 12
D- active transport
B- during a negative feedback loop
C- 1000x
C- nucleic acids.
A, B, C, D, F, G- in saliva , in mucus , on a door handle , on a water fountain
C- Which cereal contains the most sugar?
C, D, E- Spindle fibers disappear, Nuclear membranes form, Cytoplasm starts to divide.
B- urine
C- cnidarians, mollusks, annelids, arthropods, echinoderms, chordates
A- The contractions would increase.
A- Interphase
B- the cell membrane
C- Its sex cells are haploid and a result of meiosis.
A- mitochondria
A- scanning electron microscope and scanning tunneling microscope.
B- velocity
A- a reflex
C- sublimation and melting
D- B-cells and T-cells
D- scanning tunneling microscope
C- pseudoscience
D- Leonna has a solid, Xiao has a liquid, Blake made a mistake, and Amir has a gas.
C- X: mostly unicellular, nucleus, make or consume food
Y: mostly multicellular, nucleus, eat dead or decaying organisms
Sorry to everyone who didn't get 100% with all of these answers- these are the answers to the Cumulative Exam Review on edge! -Cvest
What is the function of the cell wall?
Site of ribosome production
Site of protein production
Supports and protects plant cells
Site of ATP production
Answers
PLS I NEED THIS ASAP
Which would result a farmer in producing more food at a lower cost?
planting wheat that is resistant to weed killer
breeding pear trees that grow sweeter fruits
growing rice that only grows in warm climates
producing vegetable oil that has added vitamin A
Answers
Answer:
A.
Explanation:
sorry this is late.. proof below btw ;c
Answer:
A
Explanation:
i did the quiz
Which list correctly aligns the levels of organisms from the least to the most complex?
A. cell → tissue → organ → system
B. system → tissue → organ → cell
C. organ → system → tissue → cell
D. tissue → organ → cell → system
Answers
Cells are the simplest unit and systems are made up of organs that are made from tissues that are made from cells.