Is Down Syndrome more common in a certain group of people?
How common is it?

Answers

Answer 1

Answer: I do not think it's more common in a certain group. It's one of the most common genetic birth defects. It's estimated that 1 in 700 babies are born with down syndrome (this is about 6,000). There are over 400,000 people in the US with Down syndrome.

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PLEASE HELP!!!!!!!!What are the two stages of photosynthesis represented by B and C in the diagram shown?

Answers

if I had to guess, I would say both are light reactions.

B is representing photosystem 1, while C is representing photosystem 2

I could probably give a more confident answer if there were some labels or a key to describe the symbols given in the diagram. Hope this helps!

Final answer:

The two stages of photosynthesis represented by B and C are the light-dependent reactions and the Calvin cycle. In the light-dependent reactions, light energy is used to produce ATP and NADPH. These energy carriers are then used in the Calvin cycle to convert CO₂ into glucose.

Explanation:

The two stages of photosynthesis represented by B and C in the diagram are the light-dependent reactions and the Calvin cycle.

In the light-dependent reactions, chlorophyll absorbs light energy and uses it to produce ATP and NADPH. These energy-carrying molecules are then used in the Calvin cycle, which takes place in the stroma. In the Calvin cycle, carbon dioxide is converted into glucose using the energy stored in ATP and NADPH.

Learn more about photosynthesis here:

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Which metal works best to displace hydrogens from acid? A. Mercury
B. Lead
C. Gold
D. Iron

Answers

The correct answer is Iron. That is because it's higher than hydrogen in the reactivity series, and all other that are there can do it too. This includes things like things like Zinc too. Things that are positioned lower can't do this, which includes the ones you mentioned and others.

the correct answer is D

In a strike-slip fault, the rocks on either side of the fault slip past each other sideways with littlea.
noise.
b.
shaking.
c.
up-or-down motion.
d.
movement.

Answers

The answer is C. In strike-slip faults, the two crusts on either side of the fault move along each other , horizontally. They are also referred to as lateral or wrench faults. And are caused by horizontal compression. An example of a strike-slip fault is the San Andreas fault.

I think the answer is letter c the up-or-down motion. A strike-slip fault moves sideways, giving opposite direction and parallel horizontal movements. The force that the land experiences can make the rocks slide up and down. This is caused by the movement of the earth's tectonic plates.

To avoid being digested by their host, endoparasites have a thick protective covering called thea. cell wall.
c. protoplasm.
b. cilia.
d. tegument.

Answers

The answer is A.) cell wall

Kepler correctly proposed that the planets orbited the sun in _____ orbits. a. circular c. linear b. elliptical d. spherical Please select the best answer from the choices provided

Answers

Answer:

Elliptical. Hope this helps!

Which list of details describes the viviparous mode of reproduction?A. internal fertilization, development of an embryo within the female body, and the developing embryo deriving nourishment from its mother
B. external fertilization and the development of offspring outside the mother's body
C. internal fertilization and the development of an embryo within the female body without nourishment from the mother

Answers

The answer is A. internal fertilization, development of an embryo within the female body, and the developing embryo deriving nourishment from its mother

There are three different modes of reproduction:
- Ovoparity - internal fertilization, but development of offspring outside the mother's body (in eggs: ovo
- Viviparity - internal fertilization, development of an embryo within the female body, and the developing embryo deriving nourishment from its mother
- Ovoviviparity - internal fertilization, development of an egg which remains in the mother's body before the hatch and lacks nourishment from its mother.

Other Questions

Which of the following statements is true? Acquired mutations are passed down from parent to offspring. Mutations are the most fundamental way to add new genes to a gene pool. Hereditary mutations are caused by external factors, such as radiation. Only somatic mutations are important to evolution because they can be inherited.

Why is RNA necessary to act as messenger?

If an alien astronomer in a distant galaxy looks at all the galaxies it can see, it will observe that Select one: a. other galaxies are moving away from it. b. half of the galaxies are moving away and half of them are moving toward it. c. other galaxies are stationary. d. other galaxies are moving toward it. Clear my choice

The most abundant elements in the body are hydrogen, oxygen, carbon, and _____. calcium sulfur nitrogen boron