Answer:
Helper T cells are arguably the most important cells in adaptive immunity, as they are required for almost all adaptive immune responses. They not only help activate B cells to secrete antibodies and macrophages to destroy ingested microbes, but they also help activate cytotoxic T cells to kill infected target cells. As dramatically demonstrated in AIDS patients, without helper T cells we cannot defend ourselves even against many microbes that are normally harmless.
Explanation:
Which type of molecule would be released from a cell in the process of exocytosis?
Answer:
waste or secretory proteins will be released from the cell
Explanation:
Answer:
membrane proteins, and lipids and soluble proteins are secreted
24. Which process in humans does not use energy released from respiration?
A cell division
B. diffusion of oxygen
C. muscle contraction
D. protein synthesis
Answer:
Muscle contraction
Explanation:
Because it will be very hard for the respiration to release through human energy
Light travels in the form of waves. The diagram below shows the path of a light wave moving
from medium A to medium B. Which of the following occurs when the light wave enters
medium B?
(1 Point)
The light wave stops moving,
The light wave's speed changes.
The light wave does not change.
O The light wave changes to a sound wave.
Answer:
The light wave's speed changes.
Explanation:
A skunk living in the northern part of the United States is exposed to extreme cold and food shortages during the long winter months. Based on the climate, what do you predict the skunk's innate response to these environmental factors will be?
Increase cellular respiration and ATP production
Estivate with a period of dormancy until the warmer weather arrives
Migrate to regions of warmer weather
Slow down its metabolic rate and lower its body temperature
Answer:
Slow down its metabolic rate and lower its body temperature
Explanation:
Skunks do not hibernate or migrate. Instead, they conserve as much energy as possible.
In a population of giraffes, some of them have longer necks than others
Answer:
This is due to evolution
Explanation:
The giraffes with longer necks can reach food more easily than the short neck giraffes so as to reach food in higher trees.
Which property of a mineral is expressed using the Mohs scale?
luster
hardness
0 0 0 0
monetary value
streak
Answer:
hardness
Explanation:
Mohs hardness, rough measure of the resistance of a smooth surface to scratching or abrasion, expressed in terms of a scale devised (1812) by the German mineralogist Friedrich Mohs. The Mohs hardness of a mineral is determined by observing whether its surface is scratched by a substance of known or defined hardness.
According to the left
brain/right brain theory, if
you are "right brained", in
which activity are you MOST
likely to excel?
A. Facts
B. Math
C. Logic
D. Music
Helppp asappp
when one animal leaves its home and another animal uses it
Answer:
I don't get your question
Which of these activities requires the use of a material resource?
heating a home
manufacturing steel
climbing a tall mountain
generating an electric current
Answer:
I think its manufacuting steel Have a great day
Explanation:
Manufacturing steel is an activity which requires the use of material resources. Thus, the correct option is B.
What are Material resources?Material resources are the materials which are found in the natural world that have many practical use and value for humans. Material resources include wood, glass, metals, edible plants, and plastics. Renewable material resources, like glass, are the resources which can be re-created easily.
Steel is manufactured from iron ore, which contains iron, oxygen and other minerals that occurs in nature. The raw materials for the manufacturing of steel are mined and then transformed into steel using two different processes such as the blast furnace, basic oxygen furnace route, and the electric arc furnace route.
Therefore, the correct option is B.
Learn more about Material resources here:
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Which phase of meiosis separates homologous chromosomes?
Answer:
C.
Explanation:
Try putting C.
hope this helped
Why does estrogen most likely need to increase blood flow in a pregnant woman's body?
so blood can be better filtered
so she can be warmer
O so she can feel calmer
O so blood can reach the fetus
Answer:
So blood can reach the fetus
Explanation:
The blood can reach the fetus so that's why estrogen most likely need to increase blood flow in a pregnant woman's body
What is the function of estrogen?Estrogen refers to a group of hormones produced in the ovaries. The increase in estrogen during pregnancy enables the uterus and placenta to improve vascularization (the formation of blood vessels) transfer nutrients which support the developing baby.
In females, estrogen helps develop and maintain both the reproductive system and female characteristics, such as breasts and pubic hair.
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hey could someone help me with this immediately! i’ll mark brainiest if u don’t guess or leave a link!!
Answer:
the fourth one. hope this helps:)
Explanation:
Answer:
Plant 4
Explanation:
Joshua had been giving his plants 1/2 cup two times a week. This is the control group, because it remains unchanged.
question 6 Pls answer its 20 point
Answer: G1 brainliest??
Explanation:
ver a long period of time, flower shapes and color variation have changed as a direct response to attract more pollinators, such as bees and hummingbirds. This is an example of --
Predation
Competition
Parasitism
Commensalism
Answer:
This is an example of parasitism
Ver a long period of time, flower shapes and color variation have changed as a direct response to attract more pollinators, such as bees and hummingbirds. This is an example of Predation. Thus, option A is correct.
What are predators?A predator is a creature that eats all or a portion of the body of its victim, which may be alive or recently deceased. Predators are distinguished from decomposers, such as fungus and bacteria, which break down the remaining remnants of dead species, by the phrase "living or recently killed."
We can confidently classify a lion as a predator if we witness it devouring a zebra. However, the zebra is included in the wide definition as well! Prey for a predator can include both plants and fungi as well as living things.
Additionally, a predator is not required to kill its victim. Instead, it can just remove a part of the prey's body and leave it alive, like a grazing cow or a bloodsucking mosquito. Herbivory is the term for a predator-prey situation in which an animal or insect eats a plant; herbi- stands for plant, and -vory implies eating.
Therefore the correct option is B.
Read more about predators, here
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Which of the following is the complementary mRNA sequence of:
ATG CCTACC GAC?
Answer:
UAC GGAUGG CUG
Explanation:
A=U ; G=C
Pls help! What field studies all organisms that have existed, where they came from, and how they are related?
what is the scientific name of wise
What is an organism that has similar characteristics and
can reproduce?
Gene flow
Mutation
Species
Organism
Explanation:
species are the group of organisms which are compatibly reproduce
As ecological succession progresses forward in time,
A) there is very little effect on the diversity of plant and animal life.
B) the diversity of plant and animal life increases.
C) the diversity of plant and animal life decreases.
D) none of the above
The answer is not A
Answer:
B the diversity of plant and animal life increases.
Explanation:
Succession will always increase biodiversity
Only plant cells, not animal cells, have chloroplasts. What important process takes place in the chloroplast?
Chloroplasts allow plants to capture the energy of the Sun in energy molecules. This gives energy and nutrients to the plant.
Match the description to the form of water that is described.
Molecules are
attracted to each
other, but not
ordered
?
Water vapor
Molecules are
not stuck
together
?
Liquid water
Molecules are
joined in an
ordered
structure.
?
Ice
Answer:
Molecules are attracted to each other, but not ordered: liquid water
ater vapor
Molecules are not stuck together: water vapor
Liquid water Molecules are joined in an ordered structure: ice
Explanation:
Apex for 9th grade answers
Match the description to the form of water that is described.
Molecules are not stuck together: Water vapor.
Molecules are attracted to each other, but not ordered: Liquid Water.
Molecules are joined in an ordered structure: Ice.
27. Which of the following will likely form at a convergent plate boundary?
A) sea floor spreading
B) rift valleys
C) mid ocean ridge
D) mountains
Answer:
d
Explanation:
Select the correct answer.
In a car accident investigation, forensic Investigators could not locate the antemortem dental record of the victim for comparative study.
What should they do to Increase the probability of locating the antemortem record?
A. perform comparative dental identification
B. perform dental profiling of the victim
C. look for other evidence
D. scan the global databases
Reset Next
Answer:
the answer is b
Explanation:
Horticulture 20 points
What describes how commodity check-off organizations operate?
Answer: its a
Explanation:
hey could someone help me with this immediately!! i will mark u brainiest if u don’t guess or leave a link!!!
Answer:
Chemical energy changes into thermal energy and light energy
Answer:
chemical energy changes into thermal energy and light energy
In which type of plant tissue does photosynthesis take place?
(A) dermal
(B) vascular
(C) nervous
(D) ground
Answer:
(B) vascular
Explanation: I think its b but if im wrong plz dont get mad at me.
NEED HELP ASAPPPP!!! PLEASEE
Answer:
1. The meaning of a diploid chromosome is a chromosome that has two complete pairs (sets) of chromosomes (from each parent).
2. Muscle cells, bone cells, blood cells, skin cells, and nerve cells are all diploid. (most cells are minus reproductive ones).
3. Haploid chromosomes are chromosomes that only has only a single set of chromosomes that don't have pairs.
4. Reproductive cells are haploid
7. A dog would have 39 pairs of chromosomes (hence the total 78 chromosomes).
8. A dog's reproductive cell would have half of the diploid cell because it is haploid so it would have 39 chromosomes.
10.The only haploid cell out of the 5 options is the ovum/sperm cell because they are the only reproductive cells (and reproductive cells are always haploid unless they combine to make a pair and form a zygote)
Hope this helps! :D
Also sorry I didn't know 5 or 6
How oxygen moves through an ecosystem
Answer:
Plants and animals use oxygen to respire and return it to the air and water as carbon dioxide (CO2). CO2 is then taken up by algae and terrestrial green plants and converted into carbohydrates during the process of photosynthesis, oxygen being a by-product.
Explanation:
Hope this helps
:)
is the involuntary movement of the muscles that move food through the digestive system
Answer:
Preistalisis
Explanation:
Peristalsis, involuntary movements of the longitudinal and circular muscles, primarily in the digestive tract but occasionally in other hollow tubes of the body, that occur in progressive wavelike contractions. Peristaltic waves occur in the esophagus, stomach, and intestines.
please help if you can
The first part of the plant to emerge from a sprouting seed is the root. If the see is planted upside down, the root will first grow upward. Then it will turn and grow downward. What kind of response is this?
A.Gravitropism
B . Hydrotropism
C. Phototropism
D. Thigmotropism