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Mrac [35]
3 years ago
13

How many and what type of chromosomes would be expected in a karyotype of a human male? A. 22 pairs of autosomal chromosomes and

2 Y chromosomes B. 23 pairs of autosomal chromosomes and 2 Y chromosomes C. 22 pairs of autosomal chromosomes, 1 X chromosomes, and 1 Y chromosomes D. 23 pairs of autosomal chromosomes, 1 X chromosomes, and 1 Y chromosome
Biology
2 answers:
KIM [24]3 years ago
7 0
The answer to this is D. You would expect 23 pairs of autosomal chromosomes with 1 X chromosome and 1 Y chromosome in a karyotype of a human male. 
jok3333 [9.3K]3 years ago
4 0

The correct answer is actually

C. 22 pairs of autosomal, 1 X chromosome, and 1 Y chromosome

I hope this helps!

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A carbon atom has 6 electrons however, its valency is 4. This is because the carbon atom ________.
Ulleksa [173]
The answer is letter d. it has only 2 electrons in its first shell and 4 in the second shell. Basing from the electronic configuration of the carbon atom, the "s" orbital of carbon atom is completely filled leaving now the "p" orbitals partially filled. Thus in this case, carbon atom has four (4) valence electrons. 
6 0
3 years ago
Help me, please with this :)
WARRIOR [948]

Answer:

Please find the answer to the blank spaces in each statement of the attached image in CAPS.

1. All energy comes from the SUN

2. Plants, algae and some bacteria capture energy by PHOTOSYNTHESIS in their CHLOROPLAST.

3. Plants, animals, fungi, protists, and most bacteria release energy by RESPIRATION in their MITOCHONDRIA.

Note:

- Photosynthesis requires CARBON DIOXIDE (CO2) and WATER (H20) to make GLUCOSE (C6H12O6) and OXYGEN (02)

- Respiration requires GLUCOSE (C6H12O6) and OXYGEN (02) to make CARBON DIOXIDE (CO2) and WATER

Explanation:

The image in this diagram is depicting how energy flows from the ultimate source, which is the SUN to other living organisms. Plants, algae and some bacteria have the ability to capture energy from the SUN using pigments in their CHLOROPLAST in a process called PHOTOSYNTHESIS, which they use to synthesize their food. The process of photosynthesis requires CARBON DIOXIDE (CO2) and WATER (H20) to make GLUCOSE (C6H12O6) and OXYGEN (02) gas.

However, on the contrary, virtually all living organisms including: Plants, animals, fungi, protists, and most bacteria etc. release energy via an organelle called MITOCHONDRIA in a process called RESPIRATION. The process of respiration requires GLUCOSE (C6H12O6) and OXYGEN (02) to make CARBON DIOXIDE (CO2) and WATER.

6 0
2 years ago
22. What part of its life cycle is our sun in?
Artyom0805 [142]

Answer:

The Sun, like most stars in the Universe, is on the main sequence stage of its life, during which nuclear fusion reactions in its core fuse hydrogen into helium. Every second, 600 million tons of matter are converted into neutrinos, solar radiation, and roughly 4 x 1027 Watts of energy

Explanation:

8 0
3 years ago
Kara was tested for diabetes. her fasting plasma glucose test showed a level of 120 mg/dl. this indicates that
Leno4ka [110]
A single test won't put the definitive diagnosis of diabetes. This diagnosis is put on 3 conseccutive measurements and they all have to be more that 125.
4 0
3 years ago
Which of the following statement(s) is/are true regarding the adrenal glands' relationship with the autonomic nervous system?
Studentka2010 [4]

Answer:

The true statements regarding the adrenal glands' relationship with the autonomic nervous system are:

a. The adrenal cortex is an extension of the parasympathetic nervous system.

c. The adrenal glands are strictly nerve tissue.

d. The parasympathetic division stimulates the adrenal cortex to secrete glucocorticoids.

e. The adrenal medulla is penetrated by the fibers of the sympathetic nervous system.

Explanation:

The  levels of the central nervous system which play important roles in influencing the autonomic nervous system include cerebral cortex, hypothalamus, brain stem, and spinal cord.  Usually, epinephrine (adrenaline) and norepinephrine are released into the blood stem when stress or a threat occurs.  This alert serves as a warning signal and defense system.  The purpose is to maintain homeostasis.

4 0
3 years ago
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