Answer:
1. helicase enzyme
2. Eukaryotic DNA is much larger and replication at multiple origins helps reduce the time required for whole genomes to replicate.
Explanation:
1. During DNA replication helicase enzyme is the enzyme that unwinds 2 DNA strands. Hydrogen bonds present between two strands of the DNA helical which are broken by the helicase enzyme and separate both the strands. Unwinding is essential here as it initiates the replication process.
2. There are multiple origin sites in the eukaryotic DNA due to the larger amount of material to be replicated. To reduces the replication time of the entire genome requires multiple origins of replication.
what is the velocity of a wave haveing a frequency of 25hz and a wavelength of 10 m
It should be 250mm/s
What is the function of the type of muscle that is pictured below?
Answer:
correct, its contraction and relaxation of the heart
Explanation:
by the help of pacemaker cells, contractions of our hearts are in control
Answer:
contraction and relaxation of the heart
Explanation:
c or contraction and relaxation of the heart
Identify the stages of the cell cycle using the drop-down menus. Label A-E
Picture attached
Answer:
A - G1 phase
B - G2 phase
C - S phase
D - Mitosis
E - Interphase
Explanation:
Interphase is all the parts of the cell cycle excluding mitosis, and encompasses G1, S, and G2 phases. Cells spend most of their lives in interphase
G1 is the first gap phase, where the cell is growing and making checks in preparation for mitosis. During S phase (the synthesis phase), the DNA is replicated. This is so a full copy of the DNA can be passed on to the daughter cells.
During the G2 phase, the final checks are made before the cell undergoes mitosis, which is where the cell divides.
Answer:
A. G1 phase
B. S phase
C. G2 phase
D. Mitosis
E. Interphase
Hope this helps!
Whole grains, like oats, barley, and wheat, are good sources of the B-complex vitamins. These foods are also considered very good sources of energy. Why would whole grains be good sources of energy?
A.
They are rich in fats, which are broken down and stored in the body through processes that require B-complex vitamins.
B.
They are rich in complex carbohydrates which provide energy, and their B-complex vitamins are important for transporting these carbohydrates to cells that need energy.
C.
They are rich in fats, which can only be transported to energy-producing cells with the help of B-complex vitamins.
D.
They are rich in complex carbohydrates which can be broken down for energy, and their B-complex vitamins are involved in metabolic processes that release this energy.
Answer:
the correct answer is B,
Explanation:
they are rich in complex carbohydrates which provide energy and their B complex vitamins are important for transporting these carbohydrates to cells that need energy
What direct effect do histamines have on capillaries?.
Answer: They allow capillary walls to open and become leaky. They decrease the diameter of capillaries. They prevent phagocytes from sticking to the walls of capillaries. They allow capillary walls to open and become leaky.
Explanation:
What type of biological molecule is an exonuclease.
Answer:
Enzyme (protein)
Explanation:
Exonucleases are enzymes that catalyze the removal of nucleotides in either the 5-prime to 3-prime or the 3-prime to 5-prime direction from the ends of single-stranded and/or double-stranded DNA. Removal of nucleotides is achieved by cleavage of phosphodiester bonds via hydrolysis.
Fish have a close de circulatory system.
What does this mean?
A. The blood is not contained in tubes or pumped by a
heart.
B. They have arteries and veins that contain and carry the
blood.
C. They do not require oxygen to survive.
D. They are warm-blooded.
Answer:
B
Explanation:
A closed circulatory system means that the blood is carried through specialized pathways or tubes to other parts of the body. In the case of fish this is their veins and arteries.
What does the word autotroph mean? Self food Self nourishment Other nourishment
PLZZ HELP!!
What types of cells perform photosynthesis
Answer:
Photosynthetic cells are quite diverse and include cells found in green plants, phytoplankton, and cyanobacteria. During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen.
Explanation:
i hope this helps :)
Green plants, phytoplankton, and cyanobacteria all have cells that can synthesize oxygen.
Thus, Photosynthetic cells are highly diverse. Cells create sugar molecules and oxygen during the process of photosynthesis by using carbon dioxide and energy from the sun.
Chloroplasts, specialized cells present in plant cells, are principally responsible for photosynthesis.
The cells of the leaves of plants, notably the specialized structures known as mesophyll cells, are where photosynthesis mostly takes place within plant cells. Numerous chloroplasts, where photosynthesis occurs, are present in the mesophyll cells.
Thus, Green plants, phytoplankton, and cyanobacteria all have cells that can synthesize oxygen.
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Which of these is an example of an independent
variable and its effect on a dependent variable?
A. age and race
B. burgers and hotdogs
C. the Sun and the temperature outside
D. cooking at home and ordering takeout
The independent variable is the one that causes a response in the dependent variable. Option C. the Sun and the temperature outside
What is an independent variable?Refers to all the variables in an experiment that provoke a response in another variable.
An independent variable is the one that changes or is controlled and modified in the experiment to analyze how another variable responds to it. It changes to analyze its effects on the dependent variable.
What is a dependent variable?Refers to the variable, which response depends on any change in the independent variable.
It represents a quantity of something whose value depends on how the independent variable is modified. The change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable.
In the exposed example, the correct option is C. the Sun and the temperature outside.
The Sun ⇒ Independent variable ⇒ According to how its proximity fluctuates it provoke a temperature change.Temperature ⇒ Dependent variable ⇒ It depends on the Sun
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A short, thick beak is best for birds whose food consists of thick seeds Question 4 options: True False.
Answer:
true
Explanation:
i think it will be easier to pick seed when the beak is short and thick
5. What is the ratio of carbon:hydrogen:oxygen
atoms?
Answer:
1:2:1
Explanation:
what are the subgroups of the phylum chordata
They are divided into three subphyla, Vertebrata, Tunicata or Urochordata, and Cephalochordata.
Answer:
Vertebrata, cephalochordata, and urochordata.
Explanation:
Vertebrata includes mammals, reptiles, birds, fish, and amphibians.
Cephalochordata includes lancelets.
Urochordata includes salps and sea squirts.
Which statements accurately describe tropical rain forests? Check all that apply.
They are found near the equator.
They have a cold, dry climate.
The temperature does not vary much.
They contain little variety of plants and animals.
The animals often depend on camouflage to survive.
Answer:
1, 3, 5
Explanation:
hope this helps :)
Recall that the Sun, like Earth, can be divided into layers called zones. Nuclear fusion occu
in this layer, or zone, of the Sun.
The answer choices
The convection zone
The photosphere
The radiative zone
The core
Answer: The sun glows because of nuclear fusion that takes place in its core. What do nuclear reactions on the sun produce? Nuclear reaction inside the Sun is fusing of Hydrogen to Helium and release out.
Explanation: (I think this your answer) Good Luck
Source: https://www.
Enzymes secreted by cells in the leaves of the Venus flytrap can digest
A.
proteins into amino acids
B.
sugars into starches
C.
amino acids into fats
D.
proteins into sugars
The enzymes that are in cells in the leaves of the Venus flytrap can digest proteins into amino acids.
What are enzymes?Enzymes are proteins which perform various functions in the body. These enzymes are very helpful in metabolic activities such as the digestion of food.
In this case, the enzymes that are in cells in the leaves of the Venus flytrap can digest proteins into amino acids.
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Biodiversity is key for the stability of ecosystems Explain why biodiversity is so important in an ecosystem.
Answer:
Variety of life is also called biodiversity The number of species of plants, animals, and microorganisms, the enormous diversity of genes in these species, the different ecosystems on the planet, such as deserts, rainforests and coral reefs are all part of a biodiversity.
why is it important
Declining biodiversity is a concern for many reasons.
1)A larger number of plant species means a greater variety of crops
2)Greater species diversity ensures natural sustainability for all life forms
3)Healthy ecosystems can better withstand and recover from a variety of disasters.
4) Provides biological resources such as Food , Medicinal resources and pharmaceutical drugs , Wood products , Ornamental plants , Breeding stocks, population reservoirs , Future resources , Diversity in genes, species and ecosystems
5) Ecosystem services as Protection of water resources and soil , Nutrient storage, Pollution breakdown
Explanation:
Biodiversity is important in ecosystems because it prevents the extinction of species, allows organisms to adapt to changes in the environment, and provides a wide range of materials and foods for survival. The number of species of plants, animals, and microorganisms, the enormous diversity of genes.
Small organs associated with lymphatic vessels are termed.
Answer:
lymph nodes
Explanation:
cuz small organs associated with lymphatic vessel are termed called lymph nodes
How can our lack of ecological understanding harm us?.
Answer:
Lack of understanding ecology has led to degradation of land and environment which is home to other species thus leading to extinction and endangerment of species because of lack of knowledge e.g. dinosaurs ,mammoth, white shark ,black rhinos , sperm whales etc.
Also Know, why is it important for humans to study the ecosystem? The study of ecosystem is important for Environmental Conservation, Resource Allocation, reduce pollution and destruction of ozone layer. It provides information about the benefits of environment and judicious use of Earth's resources in ways that make the environment healthy for future generations.
Lack of ecological understanding will result in natural resource degradation including things like soil erosion, deforestation, wildlife extinction, energy shortages, damage to marine ecosystems, and depletion of mineral resources.
What is ecological understanding?A subfield of research called ecology includes the areas of human science, population, neighborhood, ecosystem, and biosphere.
Ecology refers to the study of organisms, the environment, and the interactions between organisms and their surroundings.
The main objective of an ecologist is to increase their understanding of the life processes, habitats, interactions, and biodiversity of species.
Therefore, Lack of ecological knowledge can lead to natural resource degradation, which encompasses issues like soil erosion, deforestation.
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Which characteristic do viruses share with living things?.
PLEASE HELP ASAP!
1.
2.
3.
4.
5.
6.
Answer:
hi your answer is number 2
Examine the evolutionary diagram below. What does the diagram imply about the peafowl and field mouse?
Answer:
Where is the diagram? Just show it to me and I will solve the question for you with an explanation. Okay? Have a great day! :)
Explanation:
During aerobic respiration, NADH delivers electrons to ______, and then ______ captures electrons at the end and joins with hydrogen to form water.
During aerobic respiration, NADH delivers electrons to electron transport chain, and then oxygen captures electrons at the end and joins with hydrogen to form water
24. The independent variable on a graph is
What is the independent variable of a graph
Answer:
The independent variable belongs on the x-axis (horizontal line) of the graphand the dependent variable belongs on the y-axis (vertical line). The x and y axes cross at a point referred to as the origin, where the coordinates are (0,0).
Explanation:
please mark as brainlist answers
which of the following is not part of the integumentary system
Answer:
hypodermis is not part of the integumentary system.
Explanation:
because The integumentary system consists of the epidermis and the dermis.
what is a simple system?
Which one of the following statements about restriction endonuclease is true
all restriction endonucleases cut DNA at random sites
all restriction endonucleases cut DNA at specific sites
all restriction endonucleases join DNA segments at specific sites
all restriction endonucleases join DNA at random sites
Answer:
the correct answer is c
Explanation:
What do we call a lake created behind a dam to store water?
A. kettle lake
B. modified lake
C. reservoir
D. drainage basin
Answer:
C. Reservoir
a reservoir is a manmade lake that was created for storing water.
Explanation:
A way to measure the economy's performance is to measure categories of national
A) exports.
B) imports.
C) income.
D) resources.
Explain How a multicellular organism is a collection of differentiated cells.
Answer:
the picture is just your answer
Explanation:
read what's on the picture to get your answer