A byproduct of photosynthesis is oxygen. Scientists believe that phytoplankton contribute between 50 to 85 percent of the oxygen in Earth's atmosphere. In the lab, scientists can determine how much oxygen is produced by a single phytoplankton cell.
NEED ASAP 80 POINTS FOR WHOEVER IS RIGHT
All the following are important considerations when planting turfgrass EXCEPT
A.
climate.
B.
its appearance.
C.
the nutrition it provides livestock.
D.
whether or not a lot of people will be walking on it.
Answer: C. the nutrition it provides livestock
Explanation: Turf grass doesn't need nutrition to provide livestock. Hope this helped!
Thomas drew a picture of a one-celled organism. He then labeled his drawing as shown in the illustration below.
Which of the following labeled cell parts best identifies the location of genes?
Group of answer choices
Flagellum
DNA
Cytoplasm
Cell Membrane
Answer:DNA
Explanation:
Katie is camping with her family. She forgot her gloves. Now her hands are cold.
How can Katie keep her hands warm?
OA
Katie can stick her hands in cold water.
ОВ.
Katie can hold a flashlight in her hands.
OC.
Katie can rub her hands together.
OD. Katie cannot make her hands warm.
Answer:
Katie can rub her hands together
Explanation:
The friction of her hands rubbing together will create heat.
A scientist wants to determine whether a mutant phenotype is due to the loss of gene C or gene D, which are both deleted in a mutant fly with abnormal eyes. Mutant flies with that have a transgenic gene C have wild-type eyes, whereas mutant flies that have a transgenic gene D have abnormal eyes. What can be concluded from these results
Answer:
a transgenic copy of the gene C is sufficient to restore normal eye development
Explanation:
In genetics, there are diverse approaches to determining a gene's function. For example, it is possible to use a complementation test to determine loss-of-function recessive mutations when it is unknown if such mutations fall in the same or in different genes. Similarly to the generation of loss-of-function phenotypes, it is possible to insert a gene and thus produce a gain-of-function mutation that restores normal gene function (i.e., to restore the wild phenotype). Moreover, transgenic organisms refer to genetic engineering techniques by which any foreign or modified gene is inserted in the genome of an organism, which can also be used to study gene function. In this case, the restoration of the normal phenotype (wild-type eyes) is associated with the expression of the transgenic gene C, thereby evidencing that the gene C is required for normal eye development. In the last years, transgenic models have shed light on developmental pathways and on gene function.
The photo shows the seeds of one dandelion. The seeds are very light and can travel on the wind far away from the dandelion plant.
Which three factors might keep some of the dandelion seeds from becoming plants that produce their own seeds?
A. Lack of adequate soil and water.
B. Animals that eat plants.
C. The distance a seed travels.
D. Other plants that block sunlight.
Answer:
C. The distance a seed travels.
Answer:
The answer is A,C,D
Explanation:
Dandelions need soil, and water but can not have too much of it or else they wilt. The seeds can help more dandelions grow after being blown away. Plants also block the sunlight for the dandelions.
What hormones stimulate the cycle of egg or sperm production?
Answer: The main reproductive hormones are estrogen and testosterone. Once a girl enters puberty, estrogen matures the eggs in the ovaries. These are then released at regular intervals during the menstrual cycle. Testosterone stimulates the production of sperm in men.
Explanation:
state three features of myriapods that can be used to distinguish them from other arthropods
Answer:
Mandibles (lower jaw) and maxillae (upper jaw)
Two body sections (head and trunk)
One pair of antennae on the head
Explanation:
hope this helps! have a great day / night
Although Myriapods share many characteristics with other arthropods, they distinguish for having an elongated and multisegmented body, one or two pairs of legs per segment, two antennae, and rolling-up ability
----------------------------------------
As the name refers to, Myriapods have many feet. They characterize because their bodies are very elongated and divided into multiple segments. From each of the rings, emerge one or two pairs of legs.
As every arthropod, their bodies are segmented and covered by a cuticle for protection and to avoid dehydration.
Their heads carry two antennae, ocellus, and a mouth with prominent buccal appendixes. Some of them might be poisonous.
They can be slow when moving, but they are well-adapted to move through leaves and other organic material. But because they move slowly, they need a protection strategy to avoid predation. This strategy is rolling. They can roll up, and remaining like a boll, until the predator leaves.
---------------------------
Related link: https://brainly.com/question/19582822?referrer=searchResults
You burn a log on a fire. You use the fire to warm yourself and to light up the
room to read a book. Which energy transformation is taking place?
A. Chemical energy is transformed to nuclear energy and thermal
energy
B. Chemical energy is transformed to light energy and thermal
energy
C. Thermal energy is transformed to light energy and chemical
energy
D. Nuclear energy is transformed to potential energy and thermal
energy.
Answer:
b) is the the answer
Explanation:
hope it helps
Which sequence list matter from smallest to largest
A:molecule-atom-tissue-organ system
B: atom-molecule-tissue-organ
C:atom-molecule-organ system-tissue
D:atom-organ-molecule-organ system
Answer:
B
Explanation:
Atoms are smaller than molecules, then the tissue comes before the organ
The machine that removes small plants from plug trays and transplants them
directly to pots is called which of the following?
a. automated seeder
b. automated pot filler
c. automated transplanter
d. automated plugger
Answer:
anwser is
C. automatic transplanterhope it helpedPlease help I’ll mark you as brainliest if correct!
Answer:
it looks like it protects the stuff inside so C
What farming practices have depleted grasslands in North America?
Answer:
Cultivation of crops and tillage practices.
Explanation:
Farming of crops and tillage practices on the grasslands depleted grassland that are present across North America because the lands are converted and used for the production of food crops in order to fulfill the feed the existing population. More and more land is converted from grassland to the cultivation of crops that leads to lower area for the grazing of animals which results in decrease population of animals such as sheep, goat and cow etc which depends n these grazing regions for food.
Fill in the blanks
8.______ _______is the "Father" of modern genetics, who used _______
to understand important concepts of genetics and heredity.
9. A mutation is a change in the ________ of an organism that can cause ______ but sometimes can be _______ to an organism.
11. If the gene pairs are identical, a person is called _______.
12. If the gene pairs are different, a person is called _______.
Answer:
DNA and chemistry which is passed through blood
pls help asap!!————————-
Answer:
Your answer should be A
6.The development of antibiotic-resistant M. leprae is inevitable. Researchers are trying to develop antibiotics that would inhibit the biosynthesis of mycolic acids. Would this type of antibiotic be useful to treat M. leprae infections
Answer:
explanation below
Explanation:
Leprosy, known as Hansen’s disease, is a chronic infection that is caused by Mycobacterium leprae. This disease damages peripheral nerves and effect areas like skin, yes, muscles and noses. Antibiotics are used to treat the infection between 6 – 12 months. When infected people refuse to follow the treatment schedules given to them by the medical experts, there is usually the development of more antibiotic-resistant M. leprae.
M. leprae, just like tuberculosis, cell walls contain fatty molecules known as mycolic acids, which make the bacteria less susceptible to antibiotics.
Researchers have made remarkable progress in developing drugs such as ethionamide, isoxyl, thiolactomycin, and triclosan that are known to inhibit mycolic acid biosynthesis.
The development of these drugs are part of the tuberculosis drug discovery efforts (in the last one decade) which has been successfully applied to therapeutic targets in the unique mycobacterial wall.
Since morphology and cell wall of M. leprae does not differ remarkably from that of M. tuberculosis, antibiotic developed to inhibit the biosynthesis of mycolic acids would help to treat leprosy
Order the steps in the process of fertilization.
Answer:
The stages of fertilization can be divided into four processes:
1) sperm preparation,
2) sperm-egg recognition and binding,
3) sperm-egg fusion and
4) fusion of sperm and egg pronuclei and activation of the zygote.
Which of the following functions in multicellular organisms is similar to the function of DNA in unicellular organisms?
A.
Inheritance of traits
B.
Cell respiration
C.
Cell digestion
D.
Protein synthesis
A. Inheritance of traits
Both single and multi-celled organisms embrace a functional unit of life, known as “Cells”. Both of them consist of plasma membrane and cytoplasm. They carry similar features by containing DNA and ribosomes for the gene expression. All known forms of life store their genetic information using DNA, and with a few exceptions the code is universal.Both have basic unit of life (cell). Which means they both ingest food ,respire, and get rid of waste.Multicellular organisms are bigger than unicellular organisms. Unicellular has a single cell but multicellular have more than one cell.Thus, option A is correct.
Learn more:
brainly.com/question/13695548
Phenylketonuria causes a severe cognitive disability due to the inability to metabolize phenylalanine. It is an autosomal recessive disorder. About one in 12,000 newborns in Massachusetts are afflicted with the disease, skewed higher than the general US population due to more Irish-Americans. Assuming the gene is in Hardy-Weinberg equilibrium, the frequency of the carriers (heterozygotes) in Massachusetts would be calculated to be...
Answer:
The frequency of the carriers (heterozygotes) in Massachusetts is 0.018
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
1. What is the difference between climate and weather? * look at pic for answers
What Phylum do Sea Cucumbers belong to?
A Cnidaria
B Echinodermata
C Mollusca
D Arthropoda
Answer:
The answre is B Echinodermata
Explanation:
Sea cucumber, (class Holothuroidea), any of 1,200 species of marine invertebrates that constitute a class within the phylum Echinodermata.
Answer:
Echinodermata
Explanation:
Soooo... anyone have an essay on the impact of climate change on the oceans they’d like to share?? :)
I need ideas!!!
Answer:
Here's a paragraph that you can add !
Explanation:
When greenhouse gases capture more solar radiation, the oceans consume more heat, resulting in higher sea surface temperatures and increasing sea level. Changes in water temperatures and tides caused by climate change will cause changes in global climate patterns.
Please help I have a time limit
A specific location in America has closed down several fossil fuel units and set up
geothermal plants. In your own words, explain how this would affect the
environment of the location.
Answer:
it would have a big affect because The environment around the area in Africa will be mined, drilled, or condemned. The area will be used as a resource reserve. The land around will either be damaged or conserved for further mining or sample taking.Waste water may be discharged at temperatures high enough so that utilization of the waste heat becomes both practical and imperative.
Explanation:
-
Please and thank you!
Answer:
A gene mutation
Explanation:
DNA nucleotide sequence is unique
Explain why atp is important in biochemical reactions
Answer:
ATP releases energy (ATP + H2O --> ADP + P + energy) and in order for things like active transport to happen ATP is required.
Which options describe traits that are shared by all animals?
CHOSE ALL THAT APPLY!
Animal cells function in similar ways.
Animals all have the same body shape.
Animals have body systems that serve similar functions.
Animals digest their food.
Answer:
A, C, D
Explanation:
I really need help please somebody...
Answer:
first choice: 25%
Explanation:
when crossing Aa x aa, there is a 25% chance that the outcome will be Aa, giving the resulting cattle offspring horns. Hope this helps!
1. Explique con dos razones cómo podría afectarnos el resultado de una medición realizada incorrectamente.
PORFA AYUDENME ES SOMBRE LOS INSTRUMENTOS DE MEDICION
Answer:
i would but dont know spanish
Explanation:
What is the name of the cycle that develops during these changes?
what are these changes?
is it the growth or?
two models of sells are shown below. Why would model b be better for moving nutrients in and out of the cell?
Answer:
The correct answer is - C. It has a larger ratio of surface area to volume.
Explanation:
In cell B, the ratio of surface area to volume is larger in comparison to cell A. The surface area to volume ratio can be understood as it is the size of surface area that the volume of a particular substance can move in or out of the cell, in a unit of time.
Thus the larger the ratio of surface area to volume faster the diffusion rate of nutrients will be as the surface area is a square measurement and volume is cubed so the surface area increases faster than volume.
The disk-shaped region around the sun that contains the orbit of each planet is
called the
circumpolar curve
ecliptic plane
coordinate grid
celestial sphere
Answer:
The answer is ecliptic plane
Explanation:
I got it right on the test