Answer: true
Explanation:
What do you understand by membrane potential?
Answer: It is the difference in the electrical potential across a membrane
Explanation:
please anyone help me
Answer:
mutualism
hope it's right :)
Who discovered that the planets revolved around the sun?
Copernicus
Lippershey
Gutenberg
da Vinci
Explanation:
it is COPERNICUS option A
Answer:
A
Explanation:
"ucture and properties of Matter
Question 1 of 20
Which statement describes the difference between covalent bonds and Van
der Waals forces?
O A. Covalent bonds form from the attraction of positive ions and
freely moving electrons, while Van der Waals forces cause an
attraction between nonpolar molecules.
B. Covalent bonds form when there is an attraction between
nonpolar molecules, while Van der Waals forces cause two atoms
to share valence electrons.
C. Covalent bonds occur when two atoms share valence electrons,
while Van der Waals forces cause an attraction between positive
Answer:
Covalent bonds form when two atoms share valence electrons,
while Van der Waals forces cause an attraction between nonpolar
molecules
Explanation:
A covalent bond is said to be formed when two atoms of the same or different elements share electrons. In an ordinary covalent bond, each bonding atom contributes one valence electron while in a dative covalent bond only one of the bonding atoms provides the shared pair of electrons.
Van Der Waals forces is the major intermolecular interaction between non polar compounds. Van Der Waals forces " are caused by correlations in the fluctuating polarizations of nearby particles"(Wikipedia).
Answer:
Covalent bonds form when two atoms share valence electrons, while Van der Waals forces cause an attraction between nonpolar molecules.
Explanation:
Apex.
The chemical subunits called ________________ acids are joined together to form proteins.
What is the function of the seed (fertilized egg)?
Q#21 on pic
Answer: Seeds serve several functions for the plants that produce them. Key among these functions are nourishment of the embryo, dispersal to a new location, and dormancy during unfavorable conditions.
Explanation: i hope this answers your question nd have a nice day or night
Which of the following is not one of Mendel's Laws?
a) Law of Conservation of Mass
b) Law of Segregation
c) Law of Dominance
d) Law of Independent Assortment
Answer:
A
Explanation:
Law of conservation of mass was discovered by Lavoisier
Law of Conservation of Mass is not one of Mendel's Laws. Therefore, the correct option is A.
What are Mendel's Laws?Gregor Mendel's research with pea plants in the 19th century led him to reveal three fundamental laws of inheritance, known as Mendel's laws. There are three laws:
1. Law of Segregation: Each individual has two alleles for each trait, and this law indicates that these alleles separate (separate) during the development of gametes, or reproductive cells. This indicates that only one allele per trait is present in each gamete.
2. According to the law of independent assortment, the inheritance of one trait is independent of the inheritance of another. In other words, the segregation of alleles for one trait is independent of the segregation of alleles for the other trait.
3. The law of dominance states that when two different alleles are present in an individual, the dominant allele will dominate the recessive allele in terms of expression. Only when both alleles are recessive will the recessive allele be expressed.
Therefore, the correct option is A.
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The outer planets are also called the rock planets.
True
False
Answer:
false it is called gas giants or Jovian planets
Which of the following is not a function of stems?
Group of answer choices
anchorage
structural support
photosynthesis
water transport
The pie chart shows us the annual diet of a typical black bear. The percentages are based on the approximate weight of the foods
eaten. How much more fish do bears eat compared to rodents?
A)
2x
B)
3x
10X
D)
30X
Answer:
B) 3X
Explanation:
3X Bears eat 3X more fish than rodents. Bears eat 5% rodents and 15% fish. That is a 1:3 ratio of rodents to fish or 3X more fish.
Which of the following is NOT part of the definition of intelligence?
A) Ability to adapt
B) Ability to think and reason clearly
C) Ability to be creative
D) To act purposefully
probably d) but im not 100% sure
HURRY DUE TODAY
Which of the following are specialized stem structures?
Group of answer choices
pistils, stamens, anthers
xylem, phloem, ray cells
corms, tubers, bulbs, stolons, rhizomes
epidermis, mesophyll, palisade layers
Answer:
d
Explanation:
Which tree above shows a different evolutionary history from the others? Explain your answer.[ ]
Answer:
the second one is the right answer
The second evolutionary tree (2) is showing a different evolutionary history from the other trees.
What is an evolutionary tree?An evolutionary tree is a diagram/graphic used in biology to show evolutionary relationships between taxa.
The taxa located at the tree can be different species, genera, orders, etc.An evolutionary tree is monophyletic when all descendants originated from the same ancestor.In conclusion, the second evolutionary tree is showing a different evolutionary history from the other trees.
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HIV is a
Multiple Choice
double-stranded DNA virus.
single-stranded RNA virus.
single-stranded DNA virus.
double-stranded RNA virus.
prion
Answer:
single strand RNA virus
Explanation:
HIV has pair of single strand of RNA
boild water is it convection radiation cunduction or convection
Answer: I think it’s Convection.
Answer:
Convection
Explanation:
Convection occurs in fluid, which means liquid or gas.
It is not Conduction as conduction occurs in solid through direct contact.
It is not Radiation because radiation is heat transferring through waves.
How would altering the ph of an ecosystem affect the organisms that live there? Relate to enzyme function.
In your response include why slight changes in pH are significant to living things.
Answer:
pH: Each enzyme has an optimum pH range. Changing the pH outside of this range will slow enzyme activity. Extreme pH values can cause enzymes to denature. Enzyme concentration: Increasing enzyme concentration will speed up the reaction, as long as there is substrate available to bind to.
Hope this helps and if this is wrong sorry!!!
Identify In the Krebs cycle, what is pyruvate converted to?
Answer:
Breakdown of Pyruvate
After glycolysis, pyruvate is converted into acetyl CoA in order to enter the citric acid cycle.
Explanation:
A population of prairie dogs shares a habitat with a population of bison. The
bison migrate to another area. How will the prairie dog population size
change?
A. It will decrease to zero.
B. It will remain approximately the same.
C. It will increase.
D. It will decrease slightly.
Which describes gyres in the northern hemisphere?
Answer:
In the Northern Hemisphere, the gyres rotate to the right (clockwise), while in the Southern Hemisphere the gyres rotate to the left (counterclockwise). There are five major gyres in the oceans; the North Atlantic, South Atlantic, North Pacific, South Pacific, and Indian (Figure 9.1.
Explanation:
GIVING 35 PTS AFTER U ANSWER IT MUST BE CORRECT A stalled front (not moving) that may bring many days of clouds and precipitation is a(n)____________.
Question 1 options:
cold front
warm front
occluded front
stationary front
Question 2 (1 point)
Saved
An air mass, shown in the image above, that forms over parts of Mexico, Texas, and Arizona will be a _______.
Question 2 options:
continental polar air mass
continental tropical air mass
maritime polar air mass
maritime tropical air mass
Question 3 (1 point)
Saved
Prevailing westerlies are global winds responsible for most weather in our region of the United States moving from west to east.
Question 3 options:
True
False
Question 4 (1 point)
What causes a land breeze at the beach?
Question 4 options:
At night, cooler air over land replaces rising warmer air over water.
At night cooler air over water replaces rising warmer air over land.
During the day, cooler air over land forces warmer air over water to rise.
Question 5 (1 point)
Based on the weather map above, which statement is true based on the weather map?
Question 5 options:
A warm front is moving toward South Carolina.
A warm front just passed through South Carolina.
It is currently raining in South Carolina.
The next few days in South Carolina should be colder.
Question 6 (1 point)
Saved
Which type of local wind is illustrated in the image above?
Question 6 options:
Global wind
warm wind
land breeze
sea breeze
it is a stationary front because the stationary fron does not move from one place.
The "splitting apart" of cells is called :
options:
cell fissions
cell division
Answer:
all
Cell division is the process by which a parent cell divides into two or more daughter cells :3
hope this helps :)
cell division.......
Which of the following does not influence demography?
fertility rates
growth rates
archaeology finds
factors that increase death rates
What is NOT a function of the reticular formation?
a. sleep b. breathing c. memory d. pain transmission
Answer:
c. memory
Explanation:
Memory is not a function of the reticular formation. Sleeping, breathing, and pain transmission all are the functions of reticular formation. Thus, the correct option is C.
What is reticular formation?
Reticular formation is a part of the pons region of brain which controls the sleep-wake cycle and also filters stimuli to separate out relevant background stimuli from irrelevant ones.
Reticular formation is one of the phylogenetically earliest parts of the brain and it is crucial for controlling some fundamental processes such as sleeping, breathing, and pain transmission.
The reticular formation is an essential process for the numerous activities of the brainstem. It is located strategically amid the significant nuclei in the brain cells and the nerve fibers that traverse it. The reticular formation looks like an intricate web network.
Therefore, the correct option is C.
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HURRY DUE TODAY
The term for male and female reproductive structures found in separate flowers on the same plant is,
Group of answer choices
hermaphroditic
imperfect
monoecious
dioecious
Answer:
dioecious
Explanation:
The androecium is the sum of all the male reproductive organs, and the gynoecium is the sum of the female reproductive organs. If all four whorls are present, the flower is described as complete.
Match the sensory characteristic with how it is coded by the nervous system. - Sensory modality - Location of the stimulus - Intensity of the stimulus - Duration of stimulus A. Which sensory neurons are activated B. Receptive fields C. Frequency of action potentials D. Duration of action potential train (i.e., continued firing of action potentials in sensory neurons) E. Size of action potential F. Duration of a single action potential
Answer:
a) Which sensory neurons are activated
b) Receptive fields
c) Frequency of the action potentials and size of action potential
d) Duration of action potential train and Duration of a single action potential
Explanation:
Sensory modality : The sensory modality is Which sensory neurons are activatedLocation of the stimulus : The location of the stimulus is in the Receptive fieldsIntensity of the stimulus : The Intensity of the stimulus represents the frequency of the action potentials and size of action potential Duration of stimulus : The duration of the stimulus is Duration of action potential train and Duration of a single action potentialMany tree frog populations are threatened due to habitat loss. In an effort to promote conservation, tree frogs may be bred in captivity. A zoo acquired male and female tree frogs from two different populations. In the zoo, the tree frogs were able to successfully mate within their own population, but breeding attempts between the two populations were unsuccessful. Based on this information, which statement correctly describes the relationship between the two populations of tree frogs?
this is for biology test pleasee someone help
Answer: Same Genus but different species
Explanation: took the test and came back
The statement which correctly describes the relationship between the two populations of tree frogs is same genus but different species.
What are the characteristics of genus?A genus is a class or group of something. In biology, it's a taxonomic group covering more than one species. This is a term used by biologists to classify more than one species under a larger umbrella.
A species is defined as a group of organisms made up of similar individuals capable of interbreeding or exchanging genes. Genus: A genus is a taxonomic classification that includes closely related species.
Genus is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family.
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Which statements about the phylogenetic tree are true? select all that apply?
Answer: The question is not complete, here is the completed part gotten from other website.
Mammals and turtles are more closely related than are lungfishes and sharks. Hagfishes, lungfishes, and frogs have lobed fins.
Lancelets and coelacanths are more closely related than are chimaeras and coelacanths.
Organism (a) is a common ancestor of all chordates.
Descendants of organism (d) have limbs with digits. birds and ray-finned fishes have a notochord and jaws.
rays and frogs have vertebrae. organism (c) is a common ancestor of lampreys and lungfishes?
The correct options are;
Mammals and turtles are more closely related than are lungfishes and sharks.
Descendants of organism (d) have legs.
Rays and frogs have a vertebral column.
-Birds and ray-finned fishes have a notochord and jaws
Explanation:
This is because phylogenetic tree is a branching diagram that entails different evolutionary relationships that occur between organisms or biological species having common decent or ancestors and showing similar and differences in their genetic characteristics or traits. It shows how species evolved from their ancestors.
Which of the following describes the benefits of thinning a stand as a means of limiting disease?
O It gives weaker trees a better chance.
O It allows healthy trees to become stronger.
O The removed trees can be used for lumber.
O Most pests will not travel form one tree to another.
Mark this and return
Next
Submit
Answer:
I think it is it gives weaker trees a better chance
Explanation:
process by which organisms with favorable variations survive and produce more offspring than well-adapted organisms
A. evolution
B. Natural Selection
C. Speciation
Answer:
B. Natural Selection
Explanation:
Any animal with the favorable qualities to survive is naturally able to produce more offspring than others. This is theory was first theorized by Charles Darwin with his Finch birds.
(P.S I don't know if thats the right kind of bird, but point is that it was a bird :D)
Hope this helps :)
Can someone help me fill them in that would be really helpful
Answer:
a - flower
b - ovule
c - fruit
d - embryo
e - seed
f - seedling
Explanation: